#ip detection

The trend of data driving a better customer journey will continue for the foreseeable future. Therefore, more and more teams are prioritizing data accuracy when choosing third-party data partners.

Without a reliable data foundation, IP insights are unlikely to truly improve customer experience. Therefore, before adding value to the sales funnel, the first step is to ensure: is the IP data being used accurate enough?

One of the key characteristics of IP data is its dynamism—the attribution, purpose, and network characteristics of IP addresses frequently change. This means that IP data service providers need to regularly update and clean their databases. Understanding the frequency of data updates is a crucial consideration before choosing a provider.

IPing maintains a consistent pace of data updates, prioritizing data accuracy to help users build reliable application scenarios.

What sales intelligence can be gleaned from IP data?

While IP addresses themselves don't reveal an individual user's precise identity or specific address, they can provide a variety of valuable characteristics for the sales funnel.

High-Value Customer Profiles

IP data can help identify which companies are visiting your website. This type of business profiling information allows sales and marketing teams to reach potential customers earlier, making it particularly suitable for customer-based marketing strategies.

Purchase Intent Assessment

IP data can also be used to enrich purchase intent information—helping to determine which stage of the buying cycle a customer is in and what actions they are likely to take next.

For example, when a potential customer visits your pricing page, it's helpful to understand the following before investing sales and marketing resources:

What company does this visitor belong to?/Does this company fit the characteristics of a high-value customer?/Does this visitor show a high purchase intent?

In other words, you can leverage previously anonymized website traffic data to evaluate the ROI of following up on this lead.

Audience Insights

IP address data can also help companies more accurately target high-value leads. IPing's geolocation data can reveal the geographical locations or regional characteristics where customers frequently appear. When a website visitor's location or characteristics match other high-value customers, marketing and sales teams can begin reaching these leads at an earlier stage of the customer journey.

How to Apply IP Data at Each Stage of the Sales Funnel

The sales funnel can be divided into multiple stages. The following will focus on four key stages: Awareness, Consideration, Decision, and Loyalty.

Awareness Stage

IP data can help improve brand awareness by tailoring content for visitors unfamiliar with your products or services.

Using IPing's IP-to-business data, you can segment traffic. For example, if you identify a visitor as coming from a large ISP, and your target audience is an ad tech company, you can show them introductory or tutorial videos tailored to the ad tech industry. You can also use customized content to obtain visitors' email addresses for more direct communication with your sales team later.

Consideration Stage

Unfamiliar languages or currencies often quickly impact customer experience. One way to overcome this is to use geolocation data to select the appropriate language, price, currency, and shipping policy for each website visitor.

IP data can also be used to display relevant content based on IP-to-business information. For example, if a visitor's company domain points to a high-value customer, you can use this information to customize the content they see on your website.

Decision-Making Phase

When customers are weighing their options, there are several ways to leverage IP data to optimize the conversion experience. Similar to other stages of the funnel, IP information can help companies customize content. During the decision-making phase, customers may prefer to see success stories from other clients, as well as tools or resources to help users navigate the process smoothly.

If your marketing team is creating content for clients in the decision-making phase, IP address data can help them more easily find the case studies and tools they need, thereby driving conversions.

Loyalty Phase

Conversion rates for selling to existing customers are generally higher than for selling to new customers. Furthermore, acquiring new customers can cost several times more than retaining existing ones. This data suggests that brands can consider leveraging IP data to improve customer loyalty.

When customers visit a website, IPing's carrier identification data can help determine the network service they are using. If they are existing customers, website content can be personalized to enhance brand loyalty; if they are users of other carriers, comparative information can be displayed to highlight the advantages of your service.

Every year from November to December, global cross-border e-commerce platforms experience their peak transaction season. Order volumes surge significantly during promotional periods such as Black Friday, Cyber Monday, and the Christmas season. Simultaneously, platforms often implement stricter risk control measures during peak seasons.

While order volumes increase, the frequency of fraudulent transactions, account sharing, and abuse of automated tools may also rise. Against this backdrop, IP stability, as an assessment dimension of account access security, has a real impact on the account status and business continuity of cross-border sellers.

Why Platforms Focus on IP Stability During Peak Seasons

The automated risk control systems of cross-border e-commerce platforms continuously monitor account login IP information. When the system detects the following situations with an account login IP, it may mark it as an object requiring attention:

* The login region is inconsistent with historical records

* The network type used is abnormal

* The IP address changes frequently within a short period of time

These abnormal patterns themselves do not directly equate to malicious behavior, but they have a certain statistical correlation with risks such as account theft and violations. Therefore, platforms tend to conduct stricter reviews of such access behavior during peak seasons.

Common Scenarios Prone to Triggering Risk Control Alerts

In actual operation, the following scenarios may trigger platform risk warnings due to insufficient IP stability:

* Logging into an account using a public shared network

* Relying on a proxy service with low stability

* Frequently switching between office Wi-Fi, mobile data networks, and public hotspots

These behaviors will cause changes in the IP address, which may be identified by the risk control system as potential unauthorized access.

Furthermore, the source type of the IP address is also an influencing factor. Residential IPs are generally considered more trustworthy because they are closer to a real personal network environment. Data center IPs or proxy IPs of unclear origin, often associated with batch operations, may have a certain impact on the account's risk score.

Once a risk control alert is triggered, sellers may face the following situations: increased login verification processes, temporary restrictions on some account functions, temporary freezing of funds, or, in some cases, account suspension.

Impact of IP Stability on Consumers

IP stability not only affects sellers but also the shopping experience of cross-border consumers. Consumers may encounter payment issues when their IP address falls under the following categories: 1. The IP address's network segment has a history of fraudulent transactions. 2. The IP's geographical location is significantly inconsistent with the billing or shipping address.

In these cases, consumers may face payment verification failures, checkout delays, or receive security warnings from the platform.

Currently, most cross-border e-commerce platforms' fraud detection systems compare the user's IP address's regional information with transaction-related data as a reference dimension for transaction risk assessment.

Suggestions for reducing IP-related risks:

Whether you are a cross-border seller or a consumer, to ensure account security and smooth transactions during peak seasons, you can take the following steps:

Use professional tools such as iping.cc to check the IP address's attribute information.

Understand whether your current IP has any known risks.

Confirm that the IP's geographical location is largely consistent with your own location.

IP geolocation is becoming a common tool for enterprises to optimize operations and improve customer experience. By identifying the approximate geographical location of users, companies can gain support in areas such as content personalization, marketing strategy optimization, regional compliance, fraud detection, and data analysis.

How IP Geolocation Works

Each networked device is assigned a unique IP address. When a device accesses a website through an Internet Service Provider (ISP), it shares this IP address with the website. IP geolocation service providers determine location based on WHOIS information, routing information, and other relevant data. Furthermore, Geofeed, provided by ISPs and network operators, can provide more granular geographical location information by mapping IP ranges.

However, relying solely on these methods has limitations: WHOIS location data is voluntarily provided by Autonomous Systems (ASNs) and lacks unified oversight, sometimes resulting in inaccuracies; Geofeed may also contain outdated or incorrect entries; self-reported IP data may also be inaccurate or intentionally manipulated. For example, some hosting service providers may, for commercial or logistical reasons, label their server locations in WHOIS records as being closer to a specific area than they actually are.

The Core Value of IP Geolocation

Understanding the location of IP addresses visiting your company can help you improve customer experience, make data-driven marketing investment decisions, detect fraud, and comply with regional regulations.

Targeted Marketing and Personalized Experiences

Companies leverage geo-market segmentation to ensure content and advertising reach higher-value potential customers, creating a more relevant user experience. This approach helps increase user engagement by targeting specific regions or demographics with personalized marketing campaigns.

For example, an outdoor gear retailer can promote winter gear in the Northern Hemisphere while promoting summer gear in the Southern Hemisphere, providing a more customized access experience. By aligning marketing efforts with local needs and preferences, businesses can strengthen customer relationships and increase brand loyalty.

Improved ROI for Ad Technology

By utilizing IP geolocation, businesses can optimize marketing efforts more effectively. Focusing on high-potential users reduces invalid exposure, helping to make ad spend have a more noticeable impact. Furthermore, leveraging IP data with rich contextual insights, businesses can filter low-value or fraudulent traffic and focus on reaching genuine users more likely to convert.

This targeted strategy not only narrows the focus to consumers more interested in a product or service but also continuously delivers a personalized experience throughout the purchase process, thereby improving marketing effectiveness and ROI.

Enhanced User Experience

From discovering new products through geo-targeted advertising to viewing prices in local currency and completing a purchase with customized shipping estimates based on postal codes—IP geolocation helps create a seamless user experience.

Features such as localized content delivery, pricing, and currency optimization have become commonplace, and users have certain expectations. Each step of the personalized journey not only enhances convenience but also helps build trust and satisfaction. By meeting these expectations, businesses can improve conversion rates and brand reputation in an increasingly competitive market.

The Ability to Deliver Localized Content

IP geolocation enables businesses to deliver highly localized content. By identifying a user's approximate geographic location, businesses can tailor websites to display region-specific details, such as localized products, events, and advertisements. This approach helps users see content that matches their local interests and needs.

Businesses can also enhance the user journey by providing location-based recommendations and pre-filling geographic location details in forms. Focusing on localized content helps businesses simplify navigation and improve user satisfaction.

Pricing and Currency Optimization: Optimizing pricing and currency through IP geolocation provides businesses with a way to improve user experience. By detecting user location, companies can automatically display prices in the correct local currency, reducing manual conversions during the purchase process.

Beyond currency, businesses can adjust pricing based on local economic conditions, making products more competitive in different markets. For example, adjusting prices to reflect regional purchasing power ensures products remain attractive in different regions. Furthermore, businesses can use IP geolocation to run localized sales or promotional campaigns, offering regional discounts.

Improved Website Analytics

 Using IP geolocation allows businesses to better understand where their traffic comes from, enhancing website analytics and helping to identify user patterns. With more accurate location data, companies can improve targeting, content localization, and marketing strategies, making more informed decisions based on real user location data, ultimately improving user engagement and experience.

Regulatory Compliance

IP geolocation plays a practical role in ensuring compliance with legal and regulatory requirements, especially when dealing with data, financial transactions, or restricted content. By identifying users' geographic locations, businesses can better meet compliance requirements, such as ensuring GDPR compliance for EU users, CCPA compliance for California users, and restricting content according to regional censorship laws or licensing agreements.

IP geolocation also helps restrict access to financial services according to regional regulations, prevent specific activities in restricted areas, and enforce policies such as sales tax based on user location. This ability to enforce region-specific policies helps strengthen data privacy and security and reduce legal risks.

Considerations for Choosing an IP Geolocation Service

IP address information can reveal a user's approximate location but does not provide precise street-level coordinates. This balance in location detail allows businesses to monitor suspicious activity and provide region-specific content without unduly compromising user privacy.

Because IP geolocation data carries multiple values and potential risks, choosing a service provider that offers up-to-date and accurate information is crucial. The value of a location-based targeted marketing campaign or access control is closely related to its accuracy.

In today's data-driven business environment, the proper use of various tools is crucial for improving operational efficiency, protecting corporate assets, and providing a superior customer experience. Among these tools, IP lookup tools have garnered attention due to their ability to provide detailed information about IP addresses. This article will introduce five key application scenarios of IP lookup tools from an enterprise operations perspective, showcasing their functional features and practical value.

I. Enhancing Website Security with Real-Time IP Data

For enterprises reliant on online transactions and interactions, website security is an area requiring continuous attention. By integrating IP lookup tools, enterprises can monitor access traffic in real time and identify potential risks. This can detect IP addresses frequently associated with malicious activity. This information helps enterprises take timely countermeasures, such as temporarily restricting suspicious IPs or adding additional verification steps for users from high-risk areas.

II. Preventing Fraud in E-commerce Transactions

E-commerce platforms are among the areas where fraud is most prevalent. With the help of IP lookup tools, enterprises can make a preliminary judgment on the legitimacy of transactions based on users' IP addresses. When the geographical location of the IP address is significantly inconsistent with the delivery address provided by the user, the system can issue a warning. IP lookup tools can also help identify high-risk IPs associated with known fraudulent activities, thus reducing losses from refund requests and  orders to some extent.

III. Customizing Customer Experience Based on Geolocation Data

Understanding the geographical location of website visitors helps businesses provide more targeted services. By analyzing IP addresses, businesses can adjust content display, pricing strategies, or promotional activities based on the visitor's region. This can include offering exclusive discounts for specific regions or showcasing products popular in a particular area. This approach can improve user engagement and conversion rates to some extent.

IV. Preventing Account Takeover and Automated Script Attacks

Currently, attacks driven by automated scripts are becoming increasingly diverse, capable of large-scale credential stuffing attacks and  account registrations. Using IP lookup tools, businesses can identify abnormal access patterns, such as multiple accounts logging in from the same IP address within a short period, or login attempts from regions outside the business's operational scope. By identifying these anomalies, businesses can deploy corresponding protective measures or enable multi-factor authentication and other verification methods for suspicious login behavior.

V. Optimizing Marketing Campaigns and Targeted Advertising

IP lookup tools also have application value in the field of digital marketing. They can help businesses understand the geographical distribution and network environment of their target audience, thereby optimizing marketing strategies. By leveraging IP geolocation data, businesses can more effectively target advertising, segment email marketing campaigns based on regional preferences, and evaluate the effectiveness of localized marketing campaigns. These practices help improve the ROI of marketing spending and optimize resource allocation.

IP lookup tools have a wide range of applications. From security protection, transaction risk control, and customer experience optimization to preventing automated attacks and improving marketing efficiency, they provide businesses with actionable data support. A high-quality IP lookup tool should provide fast and accurate IP data to help businesses maintain competitiveness in a data-driven business environment.

Recommended IP Lookup Tool: IPing

In today's rapidly changing cybersecurity environment, protecting website security no longer relies solely on firewalls and encryption technologies. IP geolocation, as an effective auxiliary tool, helps website administrators analyze access sources, identify potential threats, and take appropriate protective measures while adhering to privacy principles.

Geographic Location-Based Access Control

Through IP geolocation data, websites can understand the origin of visitors' IP addresses. If a large amount of suspicious traffic originates from regions outside the company's business scope or from areas with high cybercrime activity, access to these regions can be restricted, or stricter rules can be set for user behavior from these regions. For multinational companies, avoiding unnecessary interaction with IP addresses from high-risk regions is a relatively effective risk control measure.

Dynamic IP Access Control

Beyond basic traffic blocking, IP geolocation can support more flexible security policies. Differentiated control can be implemented for access to sensitive areas of a website based on the visitor's geographical location. When a user attempts to log in to the system from an unfamiliar or high-risk region, access sensitive information, or perform critical operations, the system can automatically trigger additional security verification steps, such as multi-factor authentication or CAPTCHA verification. This approach helps prevent unauthorized actions even when attackers have obtained user credentials.

IP Risk Assessment-Based Fraud Detection

IP geolocation helps identify potential fraudulent activities and reduces the risk of account takeover. By comparing a user's IP address with known high-risk areas, accounts exhibiting abnormal behavior, such as logins from infrequently occurring geographical locations, can be flagged. Combined with IP risk assessment tools, enterprises can receive real-time alerts for suspicious IPs and take appropriate measures, such as requiring users to complete additional authentication or temporarily locking accounts for manual review.

Geographic Location-Based Mitigation of Large-Scale DDoS Attacks

Distributed Denial-of-Service (DDoS) attacks are a common form of cyberattack. Attackers send a large number of requests to a target website, consuming server resources and preventing legitimate users from accessing it. IP geolocation technology can identify and restrict large-scale abnormal traffic from specific geographical areas, thereby mitigating the pressure on servers and ensuring normal access for legitimate traffic. This selective traffic management helps maintain the availability of core business operations during attacks.

 Supporting Compliance Management and Regional Data Privacy Protection

Different regions have different regulatory requirements for data privacy. For example, the EU's GDPR sets forth clear requirements for the collection, processing, and cross-border transfer of personal data. IP geolocation can help businesses identify the location of visitors, thereby enabling more accurate implementation of appropriate data protection strategies. When a website collects data from users in a specific jurisdiction, geolocation information can help ensure that the data is accessed or processed only within the scope required by local laws, reducing compliance risks.

In summary, IP geolocation is a technological means to enhance website security capabilities. From suspicious traffic identification and dynamic access control to fraud detection, DDoS attack mitigation, and compliance management, security strategies combined with IP geolocation can provide more comprehensive protection for websites on multiple levels.

Recommended IP lookup tool: IPING

In today's increasingly digital world, ensuring the security of online transactions, communications, and interactions is paramount. Risk identification has become a critical aspect of cybersecurity, especially for those working in high-risk industries such as finance, e-commerce, and digital marketing.

By combining IP data with email intelligence, businesses can build a more comprehensive risk identification strategy, thereby improving both security and operational efficiency.

The Role of IP Data in Risk Identification

IP addresses provide information about a user's geographic location, device type, network service provider, and even some behavioral patterns. For businesses, understanding a visitor's IP address helps identify potential fraudulent activities, detect the use of proxy or network forwarding services, and pinpoint users who may pose a high risk.

When a high-value transaction originates from an area with high cybercrime activity, or when the IP address shows signs of being masked by proxy services, businesses can flag the transaction for further investigation. Furthermore, IP data can be used to monitor anomalous behavior, such as login attempts from unknown or suspicious locations, helping businesses take appropriate action before unauthorized access occurs. By understanding the origin of traffic and whether it matches expected patterns, businesses can detect anomalies earlier and mitigate potential risks.

Email Intelligence: An Effective Complement to Risk Assessment

IP data provides geographical and technical dimensions of user access, while email intelligence adds an extra dimension to risk identification by analyzing the characteristics of email addresses themselves. Email intelligence tools typically assess factors such as whether the email address originates from a temporary domain, whether it has been reported as a source of spam, or whether it is associated with past fraudulent activities. This information is particularly important when handling sensitive data or interacting with potential customers.

Combining IP data with email intelligence allows businesses not only to assess the likelihood of fraud but also to gain a deeper understanding of user authenticity and credibility. For example, the likelihood of fraud increases significantly when a risky IP address appears alongside an address from a temporary domain. This dual-assessment approach, compared to relying on a single data source, helps to more effectively identify and prevent risks.

Practical Applications: Fraud Prevention and Enhanced User Verification

The combination of IP data and email intelligence has practical value in fraud prevention and user verification. For online retailers and financial institutions, combining these two types of data helps identify and prevent fraudulent activities from causing actual losses. For example, if a purchase is made using an email address from a high-risk domain, and the IP address indicates the use of a proxy service, the system can flag the transaction as requiring further review, thus preventing potential financial losses.

Furthermore, this data combination is also applicable to identity verification scenarios. Businesses can cross-reference IP and email data to determine if the same user is attempting to create multiple accounts using suspicious credentials or accessing services from different locations.

The Double-Edged Sword Effect of Proxy IPs

In today's highly interconnected digital world, proxy IP technology is ubiquitous. On the one hand, it's an important tool for protecting user privacy, overcoming geographical restrictions, and conducting legitimate web scraping; on the other hand, malicious attackers are adept at using proxy IPs to hide their true identities, launch click fraud, credential stuffing attacks, data scraping, and even cybercrime. Therefore, for any enterprise that relies on IP addresses as trust anchors, efficiently and accurately identifying proxy IPs has become an indispensable part of its security system.

IPing is an advanced IP address lookup tool designed specifically to solve this problem. It not only provides basic IP location information, but its core capability lies in quickly determining whether an IP belongs to a proxy server through multi-dimensional data analysis. This article will systematically introduce how to use IPing to build your proxy detection capabilities.

Why is Proxy Detection Crucial?

In security operations, the value of proxy detection lies not only in identification but also in prevention. Specifically, its importance is reflected in the following three aspects:

Preventing Fraud: Whether it's malicious refunds on e-commerce platforms, ad click fraud, or credit card theft in financial transactions, attackers often use proxy IPs to hide their real geographical location and identity. Real-time detection of proxy IPs can intercept suspicious requests before transactions are completed.

Protecting Data Assets: Many web crawlers use proxy pools to rotate IPs, circumventing frequency restrictions. Proxy detection can effectively distinguish between real users and automated tools, protecting core content and APIs from abuse.

Meeting Compliance Audits: Many industries require recording the true source of user access. Failure to identify and record proxy usage may lead to compliance risks.

How does IPing achieve accurate proxy detection?

IPing's core capability does not come from a single data source, but is based on a composite detection engine that integrates real-time network measurement, historical behavior analysis, and a global intelligence database.

Core Detection Dimensions

IP Geographic Location and Network Characteristics: By analyzing the physical location of IPs (accurate to the city level), their ASN (Autonomous System Number), and routing path characteristics, IPing can identify typical hosting centers, cloud service provider exits, or proxy service providers.

Real-time Risk Signals: IPing maintains a dynamically updated proxy IP database, covering publicly available Socks5, HTTP proxies, and some residential proxy networks. When a user initiates a query, the system compares multiple risk indicators within milliseconds.

Device and Behavioral Profiling: For advanced threats, IPing also analyzes deeper characteristics such as the number of devices associated with the IP and protocol behavior patterns, thereby discovering proxy nodes hidden beneath the surface of "normal" networks.

Key Features at a Glance:

Real-time IP Query: Enter a single IP address and receive proxy status, type, and risk level within seconds.

Suitable for: Manual investigations, immediate risk control decisions.

Detailed Information Display: Provides a complete IP profile, including geographic location, carrier, IP type (residential/commercial/hosted), and proxy tags.

Suitable for: In-depth source tracing, security analysis reports.

Batch Query: Supports uploading or entering multiple IP addresses at once, returning batch detection results.

Suitable for: Log analysis, threat hunting, large-scale black market cleanup.

Integrate IPing into Your Security System:

Integrating IPing's proxy detection capabilities into your existing security system is highly flexible, meeting both manual emergency response needs and supporting automated, high-concurrency business risk control.

Method 1: Direct Web Query Tool:

You can directly access IPing's web query page, enter a suspicious IP address, and quickly obtain visualized results. This method is suitable for incident investigations or temporary verification.

Method 2: Automated Integration via API:

For business scenarios requiring real-time or batch detection, IPing provides standard API interfaces. You can seamlessly embed IP lookup and risk assessment functionality into your risk control engine, SIEM platform, or automation scripts simply by calling the following sample API.

Key information returned by the API includes, but is not limited to:

Geographic Location: Country, City, Latitude and Longitude

Network Affiliation: ASN, ISP Name

Risk Score: Overall Risk Level

Proxy Status: Whether it is a proxy, Proxy Type

In this way, you can dynamically assess the IP risk of each request at key nodes such as user registration, login, transactions, and content access, thereby building a proactive, real-time defense system.

In today's API-driven, web crawler-driven, and automated traffic environment, proxy IP identification has become an essential component of enterprise security infrastructure. IPing, with its powerful real-time data query capabilities, multi-dimensional network feature analysis, and convenient API integration, provides organizations of all types with an accurate, efficient, and easy-to-implement proxy detection solution.

In the digital age, ensuring the authenticity of IP addresses is fundamental to maintaining network security and the credibility of online transactions.

What is IP Purity?

IP purity measures whether an IP address is genuine, unaltered, or unhidden. A "clean" IP address means it hasn't been masked by proxy servers, VPNs, or other anonymization methods. In today's complex and ever-changing network environment, IP purity is directly related to:

Verifying the authenticity of online transactions

Identifying and blocking fraudulent activities

The reliability and security of network communications

Why IP Purity is Important

1. Preventing Fraudulent Activities

Fraudulent activities often rely on IP address spoofing. Malicious users use network forwarding or proxy servers to hide their real IP addresses, thereby increasing the success rate of fraud. E-commerce platforms and digital service providers can effectively identify abnormal traffic and intercept suspicious requests before transactions are completed by monitoring IP purity.

2. Ensuring Data Accuracy

Digital marketers rely on IP data to analyze user behavior. Inauthentic or spoofed IP addresses can distort data statistics, leading to inaccurate marketing effectiveness assessments. Maintaining a high level of IP purity helps obtain clean and reliable analytical data, supporting sound business decisions.

3. Strengthening Network Security

Network security professionals rely on IP purity to identify potential threats and prevent data breaches. IPs hidden through proxies or network forwarding are often a significant indicator of security risks. IP lookup tools can be used to determine if an IP is "clean" and assess its potential risk level.

How to Test IP Purity?

The most direct way to test IP purity is to use a professional IP lookup tool to examine the target IP address. Several solutions exist on the market, among which iping.cc provides a clear and usable set of detection capabilities:

Visual Display: Displays the purity value (risk level) and risk type of the tested IP.

Spoofing Detection: Determines whether the IP is being spoofed by a proxy.

Source Information: Provides detailed source information for the IP, helping enterprises maintain accurate access records.

By regularly performing IP verification, enterprises can ensure that only trusted, clean IP addresses can access critical systems or sensitive information, thereby maintaining network and transaction security.

In a network security system, IP purity is a fundamental indicator that cannot be ignored.