Missing Chinese ad/tracker domains — 33 unblocked domains including HTTPDNS bypass infrastructure

[twilll]

Prerequisites

• The problem occurs only when using AdGuard DNS or DNS filtering with AdGuard DNS filter, it is not caused by other ad blockers;
• You're using an up-to-date version of AdGuard DNS filter;
• Browser version is up-to-date;
• If a website or an app is broken, disabling AdGuard DNS filter resolves the issue.

What DNS server do you use?

AdGuard public DNS

Version

No response

What DNS upstream(s) do you use in AdGuard apps or AdGuard Home?

No response

What DNS filters do you have enabled?

I am using AdGuard DNS or DNS filtering with AdGuard DNS filter

What browser or app do you use?

Other app

Which device type do you use?

Other device

What type of problem have you encountered?

Missed ads

Where did you encounter the problem?

No response

Add your comment and screenshots

I tested AdGuard DNS (dns.adguard-dns.com) against a comprehensive list of Chinese advertising infrastructure domains.
33 domains are confirmed unblocked, spanning ad SDKs, ad CDNs, ad exchanges, and — critically — HTTPDNS bypass infrastructure that Chinese apps use to circumvent DNS-based ad blocking entirely.

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Category 1: HTTPDNS Bypass Domains (HIGH PRIORITY)

Chinese apps use HTTPDNS to resolve ad server IPs when regular DNS is blocked. Blocking these domains prevents this evasion technique.

Domain	SDK / Vendor	Purpose
httpdns.volcengineapi.com	ByteDance / Pangle	Pangle ad SDK HTTPDNS bypass
dns.weixin.qq.com	Tencent / WeChat	WeChat HTTPDNS bypass
httpdns.baidu.com	Baidu / Baichuan	Baidu ad HTTPDNS bypass
httpdns.baidubce.com	Baidu Cloud	Baidu Cloud HTTPDNS bypass
httpdns.n.netease.com	NetEase	NetEase ad HTTPDNS bypass
httpdns.meituan.com	Meituan	Meituan ad HTTPDNS bypass
httpdns.huaweicloud.com	Huawei Cloud	Huawei ad HTTPDNS bypass
httpdns.browser.miui.com	Xiaomi / MIUI	Xiaomi browser HTTPDNS bypass
dns.weibo.cn	Weibo / Sina	Weibo ad HTTPDNS bypass
dns.jd.com	JD.com	JD.com ad HTTPDNS bypass
httpdns.music.163.com	NetEase Cloud Music	NetEase Cloud Music HTTPDNS bypass

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Category 2: Pangle / ByteDance Ad SDK Core Domains

Confirmed from Pangle official documentation.

Domain	Purpose
i.snssdk.com	Ad request entry point
is.snssdk.com	SDK initialization
pangolin.snssdk.com	Ad serving control
extlog.snssdk.com	Ad event logging
pangle.cn	Pangle China site

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Category 3: Pangle / ByteDance Ad CDN Domains

These serve video ad creatives and images.

Domain	Purpose
sf6-ttcdn-tos.pstatp.com	Pangle ad creative CDN
lf3-cdn-tos.bytegoofy.com	Pangle video ad CDN

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Category 4: Tencent / GDT (广点通/优量汇) Ad Domains

Domain	Purpose
qzs.gdtimg.com	GDT ad creative CDN
tangram.qq.com	Tencent ad delivery platform
x.adnet.qq.com	Tencent ad network

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Category 5: Alibaba / Alimama Ad Exchange

Domain	Purpose
tanx.com	Alimama ad exchange (root)
a.tanx.com	Ad serving endpoint
cdn.tanx.com	Ad creative CDN
acs.m.taobao.com	Mobile Taobao ad service
adashx.m.taobao.com	Taobao ad tracking

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Category 6: DCloud / uni-app Ad SDK

Used by thousands of Chinese mini-apps built on the uni-app framework.

Domain	Purpose
uniad.dcloud.net.cn	uni-ad advertising platform
dcloud.io	DCloud ad integration

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Category 7: Other Ad SDKs

Domain	Vendor
sigmob.com	Sigmob ad SDK
admobile.top	Ad SDK / mediation
ad.xiaohongshu.com	Xiaohongshu (Little Red Book) ads

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Verification Method

All domains were tested using:

adb shell ping -c 1 -W 1 <domain> 2>/dev/null | grep "from"

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