In 2026, Claude account bans have become increasingly severe. Through analyzing numerous cases, we found that "three-code mismatch" is one of the main causes of bans.
What is "Three-Code Mismatch"?
"Three-code mismatch" refers to inconsistencies in:
- Location code - Geographic location from IP
- Device fingerprint - OS, browser, hardware config
- Behavioral characteristics - Usage patterns
8 Practical Strategies
1
Unify Device Fingerprint
Use CC-Gateway to unify all device identity fingerprints.
2
Match Proxy IP with Fingerprint
Ensure proxy IP matches device fingerprint.
3
Prevent WebRTC Leaks
Block WebRTC connections at network layer.
4
Unify Working Directory Format
Rewrite to macOS style paths.
Summary
The key to anti-ban is not avoiding proxies, but keeping all information consistent.