Official region support
--No API result yet.
Check if your network is ready to sign up for and access Claude AI.
One-click checks for IP location, proxy status, DNS, WebRTC, language, timezone, and browser fingerprint consistency. Combined with Nstbrowser real browser fingerprints and ISP proxies, it helps create a more stable environment for Claude registration and access.
Public IP and region intelligence
Claude and Anthropic reachability
DNS and WebRTC leak checks
Browser environment security score
Claude Check Overview
Claude exit IP
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Current IPv4 exit
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Cloudflare exit
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Claude AI exit
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Region
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City
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ASN
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IP attributes
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Official region
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Results come from the test API and live browser collection. No sample data is shown when data is unavailable.
Evidence and Recommendations
Timezone
--No API result yet.
Language
--No API result yet.
Network
--No API result yet.
DNS
UnknownNo API result yet.
WebRTC
--No API result yet.
Risk and Security Tags
VPN--Unknown
Proxy--Unknown
Tor--Unknown
Hosting / data center--Unknown
Abuse record--Unknown
Browser Environment Summary
Timezone----
Language----
Operating system--Collected
Browser--Collected
Cookie----
Canvas fingerprint
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WebGL fingerprint
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Claude availability check
--- claude.ai
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- Cloudflare
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- Service status
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DNS leak check
Unknown- Status
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- DNS exit
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- Provider
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WebRTC UDP leak check
--- Public candidates
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- First public IP
- --
- Suggestion
- Keep WebRTC aligned with the proxy exit
Build a stable Claude access environment with Nstbrowser
Claude registration and access depend not only on whether an IP is available, but also on network source, DNS, WebRTC, browser fingerprint, language, and timezone consistency. Nstbrowser creates isolated browser profiles for each Claude account and combines real Chromium fingerprints with high-quality ISP proxies to make the environment closer to real user access.
How Nstbrowser helps Claude users
Real browser fingerprints
Use a real Chromium environment with configurable Canvas, WebGL, Audio, fonts, language, timezone, User-Agent, and hardware parameters.
ISP proxy network
Compared with regular data center proxies, ISP proxies are closer to real broadband attributes and provide more stable regional identity for Claude, ChatGPT, and SaaS access.
Account environment isolation
Each browser profile has independent cookies, cache, local storage, and fingerprint settings to avoid environment mixing between Claude accounts.
Long-term stable access
A fixed region, fixed ISP proxy, stable fingerprint, and consistent language and timezone reduce repeated verification, abnormal logins, and access failures.
Recommended Claude Environment Configuration
IP type
ISP / residential proxy
Prioritize stable regions, low-risk ASN, and long-lived proxy exits.
Region
Claude supported region
Keep registration, login, and daily access in the same country or city whenever possible.
Timezone
Match the IP region
For example, use Asia/Tokyo for a Japan exit.
Language
Match the target region
Keep browser language consistent with common languages in the target region.
DNS
Avoid region leaks
DNS resolvers should not expose a region different from the target exit.
WebRTC
Use the proxy exit
Prevent the real network from leaking through public WebRTC candidates.
Browser fingerprint
Keep it stable
Use a consistent fingerprint environment for the same account over time.
Account environment
One account per profile
Use a separate browser profile for each Claude account.
Complete Claude Environment Checks in 3 Steps
Open the check page
Open this page in your fingerprint browser to identify the current exit IP, network attributes, official region support, and browser environment.
Review risk items
Focus on whether DNS, WebRTC, timezone, language, and fingerprint settings match the IP region.
Optimize and recheck
Create an isolated Nstbrowser profile, bind an ISP proxy, adjust fingerprint settings, and run the check again.
Optimize Claude Access Based on the Result
Normal
Continue access
The IP is in a Claude supported region, DNS, WebRTC, language, and timezone are aligned, and the browser environment is stable.
Attention
Optimization recommended
Language, timezone, or DNS may not fully match the IP region. Sync browser language, system timezone, and proxy settings in Nstbrowser.
High risk
Replace environment
The IP may be VPN, hosting, data center, or unsupported, with DNS or WebRTC leak risks. Use a supported-region ISP proxy.
FAQ
It can detect the current IP location, ASN information, proxy characteristics, and Claude’s officially supported regions. It also checks for DNS leaks, WebRTC leaks, and verifies browser language, timezone, and fingerprint consistency.
Most regular proxies use data center IPs, which are more likely to be detected as automated or abnormal traffic. This may result in frequent verification, login failures, or even account restrictions. High-quality ISP proxies can significantly improve connection stability and success rates.
Nstbrowser provides isolated browser fingerprint environments, supporting independent cookies, language, and timezone settings. Combined with residential ISP proxies, it enables multi-account isolation and a more stable browsing environment.
Nstbrowser can greatly improve environment consistency and simulate more natural user behavior. However, it still requires valid region-supported IPs and proper account usage behavior, and cannot guarantee 100% accessibility.