Claude Code Ultimate Anti-Ban Guide (July 2026)

After having 6 Claude Code accounts banned by Anthropic, I finally had enough. I decided to avoid all Chinese elements and set up a full "US-style" kit: US VPS + US phone number + US Apple Pay. I registered a new Claude Code account that has been active for six months and has safely survived several ban waves.

Anthropic has been active again lately, with many users on the timeline reporting bans as a new wave hits.

https://x.com/app_sail/status/2071975700824011104

Meanwhile, a popular post on Reddit revealed that an author decompiled Claude Code and found detection code. I have organized a complete solution based on this, which should be the most comprehensive anti-ban strategy available.

Conclusion: A Checklist

Let's break it down step by step.

Step 1: Change Mac and iPhone Timezone to Taipei

Timezone Masking

The detection logic found through reverse engineering runs three layers of checks on your machine:

Layer 1: Read Timezone. If it is Asia/Shanghai or Asia/Urumqi, it triggers additional logic targeting the China region. Anthropic is quite persistent here, so this must be avoided.

Layer 2: Check Proxy URL. It compares your system proxy URL against a list of 147 entries, including domains from Chinese AI companies like Baidu, Alibaba, Ant, ByteDance, Moonshot, MiniMax, and Stepfun.

Layer 3: AI Lab Keyword Scan. It scans the hostname for specific keywords.

Timezone is the first gate. If you hit it, you are already in the risk control queue, and no amount of US IP or payment info will help. This is why it's the first step: lowest cost (a few clicks), highest reward (cutting the source of the signal chain).

How the results are sent out

The sneakiest part is how the results are transmitted. They don't send an independent request; instead, they encode the combination of the three checks into two invisible details in the system prompt:

• The date changes from 2026-06-30 to 2026/06/30
• The English apostrophe ' is replaced by one of three visually identical but different Unicode characters (U+2019 / U+02BC / U+02B9)

The server parses this and immediately knows your profile: China + using proxy + proxy pointing to a specific AI Lab.

Once this signal is hit, the account isn't banned immediately but enters a risk queue. This is why some people are banned after months while others last only days; it's a cumulative score reaching a threshold.

Solution: Change system timezone to Asia/Taipei

It is also in the UTC+8 zone, so the time matches Beijing exactly, and your calendar remains normal, but Taipei is not in the detection list.

Some ask about Singapore. Theoretically, it works, but I prefer to avoid it for two reasons:

1. Singapore has too many proxies. Many domestic sellers of Claude/OpenAI accounts use Singapore timezones. Anthropic is likely to add Asia/Singapore to the detection list next.
2. Taipei is officially supported. Claude officially serves Taiwan, so Asia/Taipei is a legitimate timezone within their service area, making it less likely to be targeted.

How to change on Mac:

1. System Settings → General → Date & Time
2. Turn off "Set time zone automatically"
3. Click "Set..." and search for Taipei
4. Important: Go to "Privacy & Security → Location Services → System Services" and turn off "Setting Time Zone"—otherwise, Apple will revert it to Shanghai based on Wi-Fi location.

Verify in terminal:
``bash
$ readlink /etc/localtime
/var/db/timezone/zoneinfo/Asia/Taipei

$ node -e "console.log(Intl.DateTimeFormat().resolvedOptions().timeZone)"
Asia/Taipei
``

The Node command is the exact API Claude Code uses internally. Returning Asia/Taipei means the mask is working.

How to change on iPhone:

1. Settings → General → Date & Time
2. Turn off "Set Automatically"
3. Select "Taipei"
4. Equally important: Settings → Privacy & Security → Location Services → System Services, turn off "Setting Time Zone"

This prevents iCloud from syncing the Shanghai timezone back to your Mac.

Step 2: US VPS

After the timezone, handle the second layer: IP exit. A US exit IP makes you look like a US user.

I use Hostinger https://www.hostinger.com?REFERRALCODE=AppSail with a US data center node. Hostinger is an established provider, and its hostname is a clean hostinger.com, unrelated to the 147 Chinese AI domains. A 4GB or 8GB RAM machine is sufficient for:

• Providing a clean US IP exit
• Self-hosting a Hysteria2 proxy node
• Deploying OpenClaw

Avoid Alibaba/Tencent Cloud

Even if they offer US nodes, the combination of "US Exit + Alibaba/Tencent Domain" is a strong signal to Anthropic that a user is bypassing the firewall.

Correct Choice:

• Independent hostnames: Hostinger, CloudCone, Vultr, Linode.
• IP type is secondary: Residential IPs are better, but a clean data center IP from a non-flagged domain works fine.
• If using major clouds, stick to AWS / GCP / Azure US regions.
• Absolutely avoid: Any provider with alibaba, aliyun, tencent, qcloud, huawei, volces, or bytedance in the name.

Configure Proxy (TUN Mode + Clean Residue)

This is where most people fail. You need to hide the proxy from the OS level.

• System Proxy Mode: Modifies macOS network settings to 127.0.0.1:7890. Claude Code sees this immediately via scutil --proxy.
• TUN Mode: Creates a virtual network card (utun0) at the kernel level. The system proxy settings remain empty, making Claude Code think it is directly connected to the US internet.

Also, manually clear historical proxy residues in ~/.zshrc, ~/.npmrc, and especially ANTHROPIC_BASE_URL in your environment variables, as these are common leaks.

Step 3: US Phone Number

Domestic numbers won't work. I recommend RedPocket. It is more cost-effective than Ultra PayGo or Tello for long-term use, providing a real US mobile network identity.

https://x.com/app_sail/status/2037437653071835440

Step 4: US Apple Pay or US PayPal

Payment info is another risk dimension. Use a US Apple ID bound to a US card or PayPal.

I previously used SafePal, but since it's no longer available for new domestic applications, consider:

1. Mercury Bank (for those with US companies)
2. Capital One (requires ITIN)
3. HSBC US

US PayPal can also bind to Hong Kong cards or mainland China Visa/Mastercards. Bind PayPal to your US Apple ID for seamless payment.

Final Thoughts

With this US-style setup, my account has lasted six months. The most frustrating part isn't Anthropic's desire to prevent distillation, but their method: hiding obfuscated detection code and using invisible Unicode characters to flag users without transparency. For individual users, the only solution is to keep your local environment clean of any identifiable Chinese signals.