Claude ban causes
Every documented reason a Claude account is banned, and the IP and environment causes Anthropic does not document, each with its source.
Claude and IP Risk: Datacenter, VPN, Residential and ISP IPs Compared
Anthropic does not publish how it treats IP types. What you can check is how databases label an address and whether anyone else shares it.
Four kinds of IP, as databases label them
| Item | What databases usually show | Who else uses it | Stability for one account |
|---|---|---|---|
| Datacenter | Announced by a hosting or cloud company; the hosting flag is set | Other customers of the same host or cloud | Stable if you rent the machine, but the label is the least trusted |
| VPN exit | Proxy or VPN flags where the provider is known | Many subscribers at the same time | The exit changes with the server and session you pick |
| Rotating residential | A consumer access network; the address changes between sessions | Other customers of the pool over time | Changes by design, which is the wrong fit for a signed-in account |
| Static ISP | A network announced by an access provider; usually no hosting flag, but check | One customer when the lease is dedicated | Fixed for the whole lease |
These are the labels databases tend to attach, not how any platform treats the address. Databases disagree, and a label is an opinion about one address at one moment.
What the labels mean, as the providers define them
ip-api.com defines hosting as “Hosting, colocated or data center”, proxy as “Proxy, VPN or Tor exit address”, mobile as a cellular connection, and as the AS number and organization, empty for blocks not announced in BGP. IPinfo gives each network (ASN) a type: ISP, Hosting, Education, Government or Business. Its privacy data flags an address as associated with a VPN, a proxy, Tor, a relay service or a hosting or cloud provider.
Two cautions from IPinfo’s own documentation. Its type names are listed without definitions, so “ISP” and “Business” are the provider’s call. And its extended data says a classification may rest on activity from neighboring addresses rather than direct observation. A label therefore describes a network and its neighborhood as much as one address.
Native and broadcast ranges
In the proxy trade a native IP is one whose registered country, announcing network (ASN) and actual location agree, while a broadcast IP is a range registered in one country but announced or used in another. It is trade slang, not a standard, and providers define it differently; our native IP guide shows how to check the three data points yourself. Native describes consistency, not whether an address is residential or in a datacenter.
Our own numbers show why the difference matters when you buy. We looked up one sample address in each of 203 candidate /24 ranges on 28 October 2026 and recorded ip-api’s hosting and proxy flags.
Our check of 203 candidate ranges (28 October 2026)
| Item | /24 ranges checked | Flagged hosting | Flagged proxy |
|---|---|---|---|
| Native, all networks | 176 | 21 (12%) | 3 (2%) |
| Broadcast | 27 | 8 (30%) | 0 |
| Native, announced by NTT America (AS2914) | 66 | 4 (6%) | 0 |
| Native, all other networks | 110 | 17 (15%) | 3 (3%) |
One sample address per range, one database (ip-api.com), 28 October 2026. Other databases may label the same range differently and labels change over time. This is a sample of the ranges we were offered, not a statistic of the internet. Ranges that were flagged are left out of our AI-subscription tiers, and no range or address is published.
One account, one IP: what a shared address costs
Reputation attaches to neighborhoods, not only to single addresses. Scamalytics says its score is built from fraud reports and “applied across the surrounding IP neighbourhood”, including addresses in the same subnet, ASN and hosting block. An address you share with strangers is judged partly on what they do, and a whole range can sit under one rating.
On Anthropic’s side the Usage Policy bars coordinating malicious activity across multiple accounts and creating multiple accounts to avoid detection, and the Consumer Terms bar sharing an account. If you hold more than one account for a legitimate reason, giving each its own address keeps them from being linked by network. That last step is our reasoning, not an Anthropic statement.
In practice: lease a dedicated address that belongs to you alone for the term, put one account on it, and give each teammate their own address and their own account. On Claude Enterprise an IP allowlist is a list of ranges the administrator sends to Anthropic, so the addresses your team connects from have to stay on that list.
Switching: how often is too often?
There is no published number. Anthropic’s help center says nothing about changing IP addresses, and the articles we read that blame “frequent switching” never say what frequent means.
What we can say follows from how addresses are rated. Every new address brings a different reputation and location, so an account that appears from several countries in a day shows a contradiction that a stable account does not. This is our reasoning, labelled as such. The habit that follows: choose one supported country, keep one address for the whole lease, renew it rather than replacing it (a renewal normally keeps the same IP), and do not try other nodes on the logged-in account.
If an address stops working, ask for a replacement once, in the same country, and leave the account alone while you do. Also make sure every Claude app on the machine — the browser, the desktop app, Claude Code — uses the same exit; the Claude proxy setup guide shows how, and the environment guide covers leaks that would show your real address.
Claude IP risk FAQ
Is a residential IP safer than a datacenter IP for Claude?
Anthropic does not say. Databases label datacenter addresses as hosting, but no Anthropic page says Claude treats them differently, so we do not claim one is safer. What we recommend is a stable address that is yours alone.
What is an ASN?
An autonomous system number identifies the network that announces an address. Its organization name tells you whether the network is an access provider, a business or a hosting company.
You sell native ranges, so why do 12% of them carry a hosting flag?
The flag is one database’s opinion of one sample address in a range. We leave out ranges that were flagged and tell you to check your own address with several tools; see the purity check guide.
Is a shared IP always a problem?
Not always, but you cannot see what the other users do, and some reputation scores spread across a subnet. A dedicated address removes that unknown.
Does a good score on a checker mean Claude will accept my IP?
No. Checker scores are third-party opinions, not platform rules.
Related guides
The Claude account-stability guides, the Claude ban and appeal guide and the Claude proxy setup.
Claude account environment
Match time zone, browser language and payment details to your IP’s country: what sites can read, how to check it, and where Anthropic is explicit.
Claude account checklist
Twelve checks before and after you subscribe to Claude, each linked to the section that explains it.
IP purity check
How to read ping0.cc, Scamalytics, ipinfo, IPPure and BrowserLeaks results: which fields have a published meaning and a 5-minute routine.
Choose an AI-subscription ISP
The Claude, GPT / Grok and Gemini tiers compared: subscriptions, networks, regions, price per IP for 30 days and the first-IP half price.
Claude account bans
Why Anthropic bans Claude accounts, how to appeal and export your chats, what happens to a Pro or Max plan, and what a proxy can and can’t change.
Claude proxy
Claude proxy on a static ISP IP: Claude Code over HTTP (no SOCKS), one IP per person, an address you can allowlist — and Anthropic's region rules.
View options and pricingReference links
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- ip-api.com: JSON API documentation (response fields)
Official documentation · Confirmed on:
Read on 29 October 2026. Field definitions: mobile — “Mobile (cellular) connection”; proxy — “Proxy, VPN or Tor exit address”; hosting — “Hosting, colocated or data center”; isp — “ISP name”; org — “Organization name”; as — “AS number and organization, separated by space (RIR). Empty for IP blocks not being announced in BGP tables.”
- IPinfo: ASN database developer resource
Official documentation · Confirmed on:
Read on 29 October 2026: the ASN type field takes the values ISP, Hosting, Education, Government or Business. The page lists the categories but does not define each one beyond its name.
- IPinfo: Privacy Detection API data
Official documentation · Confirmed on:
Read on 29 October 2026. Standard fields: vpn — associated with a VPN service; proxy — associated with a proxy service; tor — a Tor exit node; relay — associated with a relay service; hosting — associated with a hosting or cloud provider; service — name of the service. The Extended API adds confidence, coverage and signal fields, and its inferred field notes that a classification may rest on activity from neighbouring addresses rather than direct observation. The Core API returns only is_anonymous and is_hosting.
- Proxy302 check of 203 candidate /24 ranges (28 October 2026)
Product observation · Confirmed on:
Our own tally. The 203 /24 ranges are the candidates for our static ISP stock offered by upstream suppliers, 176 marked native and 27 marked broadcast, from 15 networks (three ranges had no announcing network on record). On 28 October 2026 one sample address in each range was looked up in ip-api.com and its hosting and proxy flags were recorded. Counts: native 176 ranges, 21 hosting, 3 proxy; broadcast 27 ranges, 8 hosting, 0 proxy; native ranges announced by NTT America (AS2914) 66, 4 hosting, 0 proxy; other native ranges 110, 17 hosting, 3 proxy. Ranges flagged hosting or proxy are left out of the AI-subscription tiers. No range or address is published.
One address per range and one database only; other databases may label the same range differently, and flags change over time. This is a sample of what we were offered, not a statistic of the internet.
- Scamalytics: products (how the IP risk score is defined)
Official documentation · Confirmed on:
Read on 29 October 2026: the score is built from fraud feedback gathered from a global network of operators who report confirmed fraudulent activity; a score of 70 means approximately 7 out of 10 users seen from that IP address have been linked to fraudulent activity, and 0 means no known fraud risk; this intelligence is applied across the surrounding IP neighbourhood, including addresses within the same subnet, ASN and hosting block. Bands: 0–19 low, 20–59 medium, 60–89 high, 90–100 very high; Scamalytics calls the thresholds a starting point.
- Anthropic: Usage Policy
Official documentation · Confirmed on:
Read on 29 October 2026, account and platform integrity section: no using a different account, such as a newly created one, to continue after a ban, and no giving access to a person who was banned; no coordinating malicious activity across multiple accounts or creating multiple accounts to avoid detection; no automation in account creation; no stolen, fraudulent or unauthorized payment methods; no reselling, proxying or otherwise providing access to Claude through unauthorized means.
The version on the site shows an effective date of 12 November 2026.
- Anthropic: Consumer Terms of Service (effective 8 October 2025)
Official documentation · Confirmed on:
Read on 29 October 2026: section 2 — you may not share your account login information, Anthropic API key or account credentials with anyone else, and may not make your account available to anyone else; you must be at least 18 or the minimum age to consent in your location, whichever is higher. Section 12 — if access is terminated for a violation of the Terms, a subscriber is not entitled to a refund.
- Claude Help Center: Restrict access to Claude with IP allowlisting
Official documentation · Confirmed on:
Read on 29 October 2026: IP allowlisting is available on Enterprise plans only; requests from IP addresses not on the allowlist are blocked and users see an access-denied message; administrators compile the CIDR ranges to allow and send them to Anthropic, and omitting a required range can lock users out.
- Claude Help Center: Safeguards warnings and appeals
Official documentation · Confirmed on:
Read on 29 October 2026. Ban reasons listed: repeated violations of the Usage Policy, account creation from an unsupported location, Terms of Service violations. Users are warned when Anthropic believes their prompts break the policy; for API customers the warnings are tied to thresholds across the whole API account. The appeal form opens only after you log in at claude.ai with the banned account; banned Free, Pro and Max users can still export their data (possibly restricted, depending on the violation) or delete the account. The article does not mention VPNs or IP addresses and says response times are longer than normal.
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