Choose an IP Detection Site for IP Lookup, DNS Leak & WebRTC Self-Checks

If you want to know whether your current network environment is exposed, the simplest way is to find a reliable IP lookup website to perform a basic check.

Many people only focus on "What is my IP address?" during their first check. Seeing that the country and city display normally, they assume their network environment is completely fine.

In reality, the IP address is only one dimension. Information such as DNS resolution, WebRTC, browser fingerprinting, and browser core engine can also impact the final assessment of your network environment.

Today, let's talk about how to choose an IP lookup website and what key information you should focus on during a one-stop self-check of your IP address, DNS leaks, and WebRTC.

1. What exactly can an IP lookup website check?

When a device connects to the internet, outbound communication usually uses a public IP address. Through an IP lookup, you can view the IP used by your current network exit point, along with basic information such as the corresponding country, region, city, and ISP.

It should be noted that IP geolocation is not a precise positioning result. Differences exist in data sources and update intervals across databases, so minor discrepancies at the city level do not necessarily indicate a network anomaly.

A more reasonable approach is to evaluate the IP address, region, ISP, and ASN together. IP geolocation checking verifies whether the region and ISP generally match. In addition to displaying the IP address itself, many IP lookup websites
also provide IP geolocation detection.

Typically, you can view: Country/Region; City; ISP (Internet Service Provider); ASN; Organization; Network Type; and Proxy or Data Center attributes. Among these, the ISP and ASN deserve special attention.

2. What is IP purity? Why shouldn't you rely solely on blacklists?

IP purity is a concept that frequently appears in network environment testing, but it is not a fixed metric standardized across all platforms.

Determining whether an IP is "clean" cannot depend solely on whether it appears on a specific blacklist.

For example, an IP with no obvious blacklist records might still receive a high risk score on certain testing platforms, which is not necessarily contradictory. The risk score may also incorporate proxy attributes, historical data, network type, and other risk signals.

Therefore, when performing an IP purity check, it is better to evaluate multiple indicators comprehensively rather than jumping to conclusions based on a single result.

3. Looking at IP alone isn't enough: DNS leak testing and WebRTC testing

After completing an IP lookup, there are two frequently overlooked items: DNS leak testing and WebRTC testing. These two items cover different check parameters than the public IP.

IP testing mainly focuses on the current network exit point and IP attributes, while DNS and WebRTC help determine whether additional network address information is exposed by your browser or device.

Therefore, if you want a relatively complete self-check of your network environment, it is recommended to test these two items as well. DNS leak testing primarily examines:

•  Which DNS servers are currently being used

•  The ISP associated with the DNS servers

•  The region where the DNS servers are located

•  Whether the DNS information matches the current IP

•  Whether there are DNS requests that conflict with your expected network environment

DNS testing reveals the DNS resolution path and server information, whereas IP testing reveals the public exit address. They belong to different dimensions, but combining them helps determine whether your network environment is consistent.

4. WebRTC testing: Check if your browser is exposing extra addresses

WebRTC is a real-time communication technology built into modern browsers, used by video calls, voice communications, and certain web features.

Therefore, WebRTC testing mainly verifies which network addresses your browser can currently obtain and checks whether these addresses differ from your current public IP. Common scenarios include:

When you see addresses like 10.x.x.x or 192.168.x.x, there is no need to panic about a real public IP leak immediately, as these are typically private local addresses.

What really warrants attention is whether an unexpected public address appears that does not match your current network environment.

If this happens, you can further inspect browser versions, network configurations, proxy settings, and WebRTC behavior.

5. How to check IP, DNS, WebRTC, and browser environment together?

If you prefer not to open multiple testing pages separately, you can choose a tool that offers all-in-one detection. During an actual test, you can follow this sequence:

Step 1: Check IP

First, verify the public IP, Country/Region, City, ISP, ASN, and Network Type.

Step 2: Review IP Risk

Check the risk score, proxy attributes, blacklists, and historical records.

Step 3: Check DNS

Confirm whether the DNS server, provider, and region match your current network setup.

Step 4: Check WebRTC

See if the browser obtains additional local or public IP addresses.

Step 5: Check Browser Fingerprint

Verify parameters like browser type, OS, language, time zone, screen resolution, etc.

Step 6: Review Browser Core Engine

Confirm the core browser engine and version currently in use, and compare it against other browser environment details.

By following these steps, you can cover all main dimensions: network egress, DNS resolution, browser address details, and device environment.

6. Key factors when choosing an IP lookup website

There are many IP testing tools online, but more features aren't always better. If you simply want to query your public IP, a basic IP tool is sufficient.

However, if you need a thorough inspection of your network environment, focus on the following criteria:

If two platforms display differing results, it doesn't necessarily mean one is wrong. For critical network checks, cross-referencing multiple tools is best.

Summary

A comprehensive inspection workflow when choosing an IP lookup tool should follow: IP Address → IP Geolocation → ISP/ASN → IP Type → Risk Records → DNS → WebRTC → Browser Fingerprint → Browser Core Engine.

Tools like ToDetect, which support multi-item testing, allow you to review all this information in one place. The real value lies not in a single test metric, but in comparing different signals together to verify whether they remain consistent.

The same principle applies to static residential IPs: static doesn't guarantee low risk, and residential doesn't mean completely clean. Inspecting all details first to identify where issues lie is far more reliable than relying blindly on a single "IP Normal" or "IP Abnormal" verdict.