Suspicious that a proxy IP isn’t working, DNS/WebRTC is leaking, or want to confirm the exit IP’s location — use public IP/leak detection sites to self-check. This article explains the detection fields so you can correctly separate exit IP, network ownership, GeoIP, IP type, DNS, and WebRTC — they answer different questions and shouldn’t be conflated. It’s a general field-reading guide, not a recommendation for any specific detection site.
1. Before Testing: Which Question Are You Answering?
Before opening a detection site, know which category you care about:
- What IP am I exiting from? → IP Address
- Who owns this IP? → ASN / Organization / PTR
- Where is this IP? → Country / Region / City / Timezone
- What type is this IP? → Type (plus ASN/Organization)
- Is my local network exposed? → DNS / WebRTC
Detecting IP, network ownership, geolocation, and leaks are different goals with different criteria — define the question first, then read the relevant fields.
2. Core Field Quick-Reference
| Field | What to look at | Notes |
|---|---|---|
| IP Address | Actual exit IP | First confirm the proxy is active |
| ASN | Network ownership | Not equal to IP type |
| Organization | Owning organization / network operator | Aids resource-attribute judgment |
| Type | Database label for IP type | Different databases define it differently |
| Country | Country-level attribution | Cross-verify across databases |
| Region / City | Region / city | May differ between databases |
| PTR / Hostname | Reverse DNS | Auxiliary only — cannot alone determine IP type |
| DNS | Whether DNS bypasses the proxy | Focus: does it expose the local network |
| WebRTC | Any extra local/public addresses | Judge within the current browser/proxy context |
3. Reading IP & Location Fields
Core fields on an IP lookup page:
- IP Address: current exit IP — matches the IP you switched to = proxy active; shows your original local IP = proxy not active
- ASN / Organization: the network an IP belongs to (AS number, carrier name) — for network ownership, not IP type
- Country / Region / City: IP location (city-level differences explained in why proxy IP geolocation is often inaccurate)
- PTR / Hostname: the IP’s reverse-resolved hostname (data center IPs sometimes use hosted-by patterns) — PTR is reverse DNS info, only an aid for network ownership/host naming; it cannot alone determine whether an IP is residential, ISP, or data center
- Timezone: timezone — does it match the claimed location
The Type field deserves special attention: Type is the detection database’s classification label for an IP — different databases use different standards and update cycles. The same IP may show different labels in different databases, so combine ASN, Organization, Type, and the actual resource type — don’t treat a single Type as a definitive conclusion.
4. DNS Leak Detection
A DNS leak means: the browser routes through the proxy, but DNS queries still go through the local network or local ISP (bypassing the proxy to use local DNS), exposing your real network environment. How to detect:
- Look at the DNS field on a detection site to see where queries actually go
- On dnsleaktest.com click Extended Test — it lists the DNS servers that actually responded
Judgment key: whether DNS leaks is not about whether the DNS server’s country matches the proxy IP — it’s about whether DNS queries still pass through your local network or local ISP instead of the proxy’s DNS. DNS servers can be third-party public DNS, proxy-provider DNS, or other remote DNS — their location not matching the proxy exit IP is not itself a leak.
If DNS is confirmed to go local: based on the actual capability of your proxy tool or browser, enable remote DNS / proxy-side resolution so queries don’t bypass the proxy to use local DNS (capabilities differ per tool; don’t assume any protocol automatically prevents leaks).
5. WebRTC Leak
WebRTC is the browser’s real-time communication interface and can, in some cases, expose addresses that shouldn’t be exposed. How to detect:
- Open browserleaks.com/webrtc and check Local IP / Public IP
- Look for local network addresses that shouldn’t be exposed, or public addresses unrelated to the current proxy environment
Judgment key: don’t treat “Public IP isn’t the proxy IP” as automatically a leak — first see whether an abnormal address appears; if so, further determine whether WebRTC is bypassing the proxy. Different browsers, versions, and WebRTC policies affect results — judge within your current browser/proxy context.
6. Browser-Environment Extension Checks
These fields describe browser-environment information, not IP attributes — don’t mix them into the IP fields:
- User-Agent: the client type a browser declares to websites — confirm the current browser request looks as expected
- Timezone / Language / Screen, etc.: browser timezone, language, screen parameters — see DNS/WebRTC leak troubleshooting for consistency checks
If your business demands higher browser-environment consistency, check timezone, language, WebRTC, and other browser parameters item by item — no detection site can prove an environment is “fully clean”; confirm each field instead.
7. Troubleshooting Flow for Anomalous Results
Walk through the layers in order (don’t skip):
① Has the exit IP changed?
No → check proxy config (see proxy error troubleshooting)
↓
② Do country / network ownership match expectations?
Abnormal → check IP selection and GeoIP differences (cross-verify databases)
↓
③ Is DNS going through the local network?
Yes → check remote DNS / proxy-side resolution config
↓
④ Does WebRTC expose an extra address?
Yes → check the browser's WebRTC config
↓
⑤ Do Type / ASN match expectations?
Mismatch → cross-verify with other databases; don't conclude on one databaseCore order for “is the proxy really working”: first confirm the actual exit IP has switched to the expected address → then cross-check ASN, Organization, Country, and Type to judge network ownership and region. Many proxy services don’t provide ASN, Type, or Hostname info — don’t require those fields to “all match.”
8. FAQ
Q: The detection site shows a country different from the actual location — what to do?
A: Cross-check with IPinfo and 1-2 other databases. If multiple mainstream databases point to the target country at the country level, country-level attribution can usually be considered consistent; if results clearly conflict, further judge by ASN, Organization, and the actual business platform. City-level differences are common and shouldn’t be over-weighted (see why proxy IP geolocation is often inaccurate).
Q: The detection shows “Type: hosting / datacenter” — is the proxy broken?
A: Not necessarily. Type is just the detection database’s classification label — a proxy using data center IPs showing hosting/datacenter is expected; even isp/business doesn’t mean the proxy is faulty. Judge by combining ASN, Organization, and the actual resource type.
Q: How to fix WebRTC leaks?
A: First confirm an abnormal address truly appears (results differ by browser/version/WebRTC policy). Regular browsers may not fully fix it — use an anti-detect browser with WebRTC leak prevention (steps in the DNS/WebRTC leak troubleshooting). In basic setups, first confirm the proxy is active and the IP field is right.
Q: How to confirm the proxy is “really” working?
A: First check whether the actual exit IP has switched to the expected address, then check whether the IP’s network ownership (ASN/Organization/Country) matches expectations, and finally check DNS/WebRTC for local-network exposure. Don’t require ASN/Type/Hostname to all match the proxy provider’s values (many providers don’t offer these fields).
Q: What if my IP is on a blacklist?
A: Blacklist status is only a reference signal — different databases have different scopes and update speeds; don’t decide to change IP based on one blacklist result alone. Whether it actually affects your business depends on the target platform/site’s real behavior.
Q: Does visiting a detection site affect my account?
A: Visiting an IP detection website alone generally doesn’t affect an account because of the detection action itself. What matters: if your actual business account environment frequently switches network exits between regions, that may create extra environment changes. After a full check, try to keep the business network environment stable.
9. Summary
The general approach to proxy IP detection:
Check whether the IP switched → see who owns the IP → see where the IP is → check DNS/WebRTCNo single field is a complete conclusion — checking only the IP misses DNS/WebRTC leaks and network-ownership mismatches; checking only Type or PTR can’t conclude either. Cross-verifying multiple databases is more reliable than a single detection site. Detection is only a tool — after locating the issue, decide whether to fix proxy config, change the exit, or adjust browser environment.
If your proxy is Static Datacenter IP or Static Residential ISP (available at IPNut, fixed exits with region options), combined with the DNS/WebRTC leak troubleshooting browser checks, you can usually achieve stable, consistent exits. This article only states what the products actually provide (fixed exits, protocol support, region resources) and makes no promises about specific detection results.
