youdao.com
Observed Jul 18, 2026, 12:47 UTC (21h ago). Every field below was attested with an Ed25519 signature at scan time.
Up right now
Runs onCHINA UNICOM China169 Backbone
Secured byDigiCert
Registered withAlibaba Cloud Computing (Beijing) Co., Ltd.
tranco_10k
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat youdao.com actually stands on - every host below is a signed observation
youdao.com
A / AAAA
220.197.31.37
CHINA UNICOM China169 Backboneserves the site
NS
rem2.yodao.netrem1.yodao.netrem3.yodao.net
yodao.netanswers its DNS
MX
hzmx01.mxmail.netease.comhzmx02.mxmail.netease.com
netease.comreceives its email
TLS
*.youdao.com
DigiCertissued its certificate
DNS Records
A 1
220.197.31.37
MX 2
10hzmx01.mxmail.netease.com20hzmx02.mxmail.netease.com
TXT 1
v=spf1 include:spf.163.com ip4:61.135.221.0/24 ip4:123.58.182.192/26 ip4:220.181.8.0/24 -all
NS 3
rem2.yodao.netrem1.yodao.netrem3.yodao.net
SOA 1
rem1.yodao.net maintain.rd.netease.com
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
*.youdao.com |
C=US, O=DigiCert, Inc., CN=GeoTrust G2 TLS CN RSA4096 SHA256 2022 CA1 | Sat, 31 Oct 2026 23:59:59 +0000 |
GeoTrust G2 TLS CN RSA4096 SHA256 2022 CA1 |
C=US, O=DigiCert Inc, 2.5.4.11=www.digicert.com, CN=DigiCert Global Root G2 | Tue, 14 Dec 2032 23:59:59 +0000 |
DigiCert Global Root G2 |
C=US, O=DigiCert Inc, 2.5.4.11=www.digicert.com, CN=DigiCert Global Root CA | Sun, 09 Nov 2031 23:59:59 +0000 |
Subdomains (0)
None observed.
The proof
Signed at scan time. Check the math yourself. Every line above is part of one signed observation. Re-hash it and check the Ed25519 signature in your own browser; nothing leaves your machine.
Verify this receiptPut the receipt on your own site. A live badge showing what DomainDrift observes and signs for youdao.com. It updates itself. It attests a signed observation - not that the site is safe.
<a href="https://domaindrift.io/t/youdao.com">
<img src="https://domaindrift.io/badge/youdao.com.svg"
width="300" height="64" alt="DomainDrift signed observations for youdao.com">
</a>
Ed25519 Receipt
- Receipt ID
a645160a-0baa-4c3f-a688-e9bf09a4f1c0- Output Hash
70f4e7e97fad0eaff5495a2340d95edf8fb6e08de227ea7c64f505a13d06b58c- Signature
ed25519:bf107c3f4902588a41033c5a7f9bc4f6659efc816915ea7b8fb7952dab47aa8122efd6bff5451949822b864024eab5748c3482a87578cdadc57f41052a978700- Public Key
ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8- Parent
(genesis)- Plane
- fast