Diagnostic Toolbox
Inspect network paths, public IP intelligence, and local device signals separately. Queries run only when you click Start.
Claude Environment Check
Combine observable IP, IPv4/IPv6, domain routing, browser and local environment signals, distinguishing anomalies, missing data and scope limits.
Network Exits and Dual Stack · Domain Routing and IP Intelligence · Browser and Device EnvironmentPublic IP Lookup
Check the current browser HTTP reference exit IP, country geolocation, ISP, ASN, and 24-hour network stability.
Public IPv4 / IPv6 · Geolocation & ASN · Browser History ComparisonIPv6 & Dual-Stack Check
Independently probe IPv4 and IPv6 HTTP exits and cross-check regions, network types, proxy flags, and route origins.
Separate Family Probes · Dual-Stack Region Check · Same-Family WebRTC CheckClaude Domain Split Routing
Probe trace exits across Claude web, API, auth, and reference domains to detect same-family split-routing differences.
10 Fixed Domain Probes · Web / API / Auth · 3 Proxy Rule FormatsIP Type & Proxy Reputation
Look up the IP ASN, network organisation and cloud ranges, with optional VPN, proxy and Tor intelligence.
Offline ASN & Cloud Ranges · VPN / Proxy / Tor · Source Status & TimestampASN, BGP & RPKI Routing
Verify BGP prefix, origin ASN, WHOIS registration country (Native vs. Announced IP), announced scale, and RPKI ROA validation.
Prefix & Origin ASN · Native vs. Announced Country · RPKI ROA ValidationDNS Blocklists (DNSBL)
Check per-list hit, not-listed, pending, failed, and rate-limited statuses via RIPE DNS Blocklists.
Per-Blocklist Status · Background Refresh · Failures Never Count as CleanPassive Ports & Services
Read passive open ports, hostnames, tags, and associated CVEs from Shodan InternetDB without active port scanning.
Passive Service Records · Associated Hostnames · Metadata-Linked CVEsReverse DNS (PTR)
Perform reverse DNS (PTR) lookups for your public IPv4 or IPv6 address and display reverse hostnames or explicit NXDOMAIN status.
IPv4 / IPv6 PTR · DNS Status Explanation · Distinct from DNS Leak TestDNS Leak & Resolver Exit Check
Use random domains to identify this browser’s recursive DNS resolvers, check mainland-China services and split resolution, and show incomplete records.
Actual Recursive DNS · Random A / AAAA Probes · Resolver Location & Split ResolutionWebRTC Public IP Check
Observe public ICE/STUN candidates exposed by the browser and compare them against same-family HTTP reference exits.
Dual STUN Node Probe · Same-Family Comparison · Reflexive vs. Host CandidatesBrowser Fingerprint & Capabilities
Inspect the browser fingerprint hash (Canvas, WebGL, Audio, CJK and vendor fonts, and UA-CH consistency), comparing fingerprints and test IPs from the last three checks.
Composite Hash & Stability · CJK Fonts & Consistency · Last 3 Snapshots DiffCross-origin blocks, rate limits, pending results and missing permissions are shown separately. Native system checks require the local version. Random-domain DNS leak checks are supported; TLS fingerprints and internal account records remain outside the diagnostic scope.
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