How do I use CheckCC?
Open the page and click "Check Claude environment now". You don't need to log in to Claude or install anything. The check runs in your browser and, within a few seconds, shows a 0–100 environment risk score, which signals matched, and how much of the check could be evaluated. To add the IP country, WebRTC egress, and Claude endpoint reachability, turn on the network layer in the check settings and run it again.
Is the result Anthropic's official decision?
No. CheckCC is an open-source heuristic tool. It estimates regional conflicts only from signals the browser can read, doesn't call any Anthropic API, and can't see your account's real status. A high score doesn't mean your account will be restricted, and a low score doesn't mean it's safe: the platform also weighs things the tool can't see, such as sign-in behavior and payment details.
Why do timezone and browser language affect the risk signals?
Timezone and language are the most visible regional clues a browser exposes. The system timezone, preferred browser language, and Intl locale usually point to the same region; if they clearly disagree with the country of your exit IP, that is a regional-conflict signal. CheckCC groups these signals so each group counts once, at its largest weight, instead of adding up the same evidence twice.
Why can a Claude account be restricted?
Common reasons include accessing or signing up from a country or region Anthropic doesn't support, using a payment method from a different region, switching network exits frequently, and violating the usage policy. Anthropic's list of supported regions and its usage policy are the authority here; CheckCC only covers the part of your environment that a browser can observe.
How does Claude's risk system evaluate an environment?
Anthropic doesn't publish its rules. Systems like this usually weigh several signals together, such as IP location, payment details, browser environment, and account behavior, rather than a single IP address. CheckCC can only check whether your browser environment is consistent, to help you spot obvious conflicts. It can't reproduce or predict the platform's decision.
Can a restricted account be recovered?
You can appeal through Anthropic's official support channels and provide the account details they ask for. Before appealing, CheckCC can show whether your current environment has obvious conflicts, so you can describe the situation accurately. Anthropic makes the decision; CheckCC can't lift a restriction or predict whether an appeal will succeed.
Will I get a refund after an account restriction?
That depends on your subscription status, payment channel, and Anthropic's policy at the time, so ask through official support. Subscriptions bought through the App Store or Google Play follow that store's refund process. CheckCC doesn't handle payments and can't see your subscription.
What should I check before creating a Claude account?
Make sure your country or region is on Anthropic's supported list, and use a phone number and payment method that match your own details. Before signing up, CheckCC can show whether your browser's timezone, language, and exit agree. Don't fake your timezone, language, or location to get around regional restrictions; doing so can itself violate the usage policy.
What should I check before applying for the Claude API?
The API is also only available in supported countries and regions, and billing details need to match the organization's location. CheckCC's network layer shows the country of your current exit IP and whether api.anthropic.com is reachable. Reachability only means the network gets through, not that the account or region is eligible.
Does Claude Code relate to account environment risk?
Claude Code uses the same Claude account or API quota, so the same regional requirements apply to the account and organization. CheckCC checks your browser, but Claude Code runs in a terminal, and its network exit can differ; for example, a system proxy may apply to some programs and not others. In that case the browser result doesn't describe Claude Code's exit.
Does CheckCC collect my data?
By default the check reads environment signals only inside your browser. Nothing is uploaded, and your Claude account, cookies, and chats are never read. With the network layer on, your browser contacts a third-party IP lookup service, a STUN server, and Anthropic endpoints directly, and those services see your public IP; this site's server doesn't receive, forward, or store the results. The code is open source, so you can review it or host it yourself.