Claude Environment Diagnostics
Having trouble connecting to Claude, or checking your setup? Review your network and browser, identify issues, and follow the next steps.
No Claude sign-in required · See issues and recommended next stepsIssue index, highlighted findings and next steps
Start Here for Your First Check
Review your current environment and prioritise issues.
Start Full Check ↗02 / CONNECTIONSTrouble Connecting to Claude?
Compare connections and exits across services.
Check Connections ↗03 / IP NETWORKUnderstand Your Current IP
Review network organisations, cloud ranges and proxy labels.
Check IP Type ↗Explore Specific Checks
Know where to look? Choose a tool for detailed results.
Claude Environment Check
Review your current network and browser, with prioritised findings.
Network Exits and Dual Stack · Domain Routing and IP Intelligence · Browser and Device EnvironmentPublic IP Lookup
Identify the network exit and region used by this browser.
Public IPv4 / IPv6 · Geolocation & ASN · Browser History ComparisonIPv6 & Dual-Stack Check
Check the alternate network protocol for overlooked exit differences.
Separate Family Probes · Dual-Stack Region Check · Same-Family WebRTC CheckClaude Domain Split Routing
Compare connections to Claude services and locate routing differences.
10 Fixed Domain Probes · Web / API / Auth · 3 Proxy Rule FormatsIP Type & Proxy Reputation
Understand the network provider and exit type, with clear labels for unknown data.
Offline ASN & Cloud Ranges · VPN / Proxy / Tor · Source Status & TimestampASN, BGP & RPKI Routing
Check network attribution and routing origin for issues to raise with the operator.
Prefix & Origin ASN · Native vs. Announced Country · RPKI ROA ValidationPractical Guides: Read by Topic
Structured chapters from network routing to account restrictions and appeals.
Restriction Causes & Policies
Distinguish official account restrictions, usage limits, and network failures before interpreting diagnostic signals.
4 chapters →Network & Egress
Inspect IP intelligence, domain split-routing, IPv6, Public DNS, and WebRTC separately.
5 chapters →Device, Language & Sessions
Understand browser-visible device fingerprints, locale signals, and helper permission boundaries.
4 chapters →Claude Code Topics
Terminals, browsers, remote SSH hosts, and proxy rules each follow independent network paths.
4 chapters →Account & Usage Security
Protect login credentials, choose proper access methods, and recognize usage limit notices.
4 chapters →Billing, Payments & Refunds
Handle billing, subscription cancellations, and refund requests through your original payment channel.
4 chapters →Restrictions & Appeals
Preserve verifiable facts and timeline evidence when submitting appeals through official portals.
4 chapters →Availability & Alternatives
Verify regional eligibility, evaluate alternative workflows, and manage cross-platform AI accounts safely.
4 chapters →Popular Reading Paths
Claude Not Working: Distinguish Bans, Rate Limits, and Connection Errors
Separate account suspensions, usage caps, organization holds, and network failures so you do not treat every error as a ban.
Read Chapter ↗Network & EgressTroubleshooting Split Routing Across Claude Web, API, and Auth Domains
Use per-domain trace probes to spot same-family exit discrepancies and understand how probes differ from live traffic.
Read Chapter ↗Network & EgressDoes IPv6 Cause Bans? Starting from Dual-Stack Exit Checks
Inspect IPv4 and IPv6 independently without treating the IPv6 protocol or failed probes as an automatic risk.
Read Chapter ↗Restrictions & AppealsStep-by-Step Triage After Receiving a Claude Account Restriction Notice
Preserve the original notice, identify whether it affects a personal or organization account, and use the official appeal portal.
Read Chapter ↗