sdu.edu.cn

Observed Jul 24, 2026, 03:16 UTC (7h ago). Every field below was attested with an Ed25519 signature at scan time. Catalog observation, re-checked on rotation — watch it for 5-minute checks.

Verify this receipt yourself + Watch this domain

Up right now

Runs onChina Education and Research Network Center

Secured byGlobalSign

4 subdomains · tranco_20k

Every line above is a signed observation. Check the math at the bottom of the page.

INFRASTRUCTURE MAPwhat sdu.edu.cn actually stands on - every host below is a signed observation

sdu.edu.cn

A / AAAA

211.86.56.247202.194.15.6202.194.14.6

China Education and Research Network Centerserves the site

sdunetnms.sdu.edu.cnsdunetsv3.sdu.edu.cnsdunetsv2.sdu.edu.cn

edu.cnanswers its DNS

sdu.edu.cnmx-sdu-edu-cn.icoremail.net

edu.cn + icoremail.netreceives its email

TLS

*.sdu.edu.cn

GlobalSign nv-saissued its certificate

DNS Records

A 3

211.86.56.247
202.194.15.6
202.194.14.6

MX 2

10sdu.edu.cn
5mx-sdu-edu-cn.icoremail.net

TXT 3

adobe-idp-site-verification=cef8bf80d248a94fa8b062412bf40df7a25445b49d5aac2d1eb7a642700bc455
_yxei1p4rs4wrzu1xkjc21adqzpy1kve
v=spf1 ip4:202.194.15.6 ip4:202.194.14.6 ip4:211.86.56.247 include:spf.icoremail.net -all

NS 3

sdunetnms.sdu.edu.cn
sdunetsv3.sdu.edu.cn
sdunetsv2.sdu.edu.cn

SOA 1

ns.sdu.edu.cn mail.sdu.edu.cn

TLS Certificates (3)

Common Name	Issuer	Expires
`*.sdu.edu.cn`	C=BE, O=GlobalSign nv-sa, CN=GlobalSign GCC R3 DV TLS CA 2020	Tue, 13 Apr 2027 06:27:07 +0000
`GlobalSign GCC R3 DV TLS CA 2020`	2.5.4.11=GlobalSign Root CA - R3, O=GlobalSign, CN=GlobalSign	Sun, 18 Mar 2029 00:00:00 +0000
`GlobalSign`	C=BE, O=GlobalSign nv-sa, 2.5.4.11=Root CA, CN=GlobalSign Root CA	Fri, 28 Jan 2028 12:00:00 +0000

Subdomains (4)

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 receipt

Put the receipt on your own site. A live badge showing what DomainDrift observes and signs for sdu.edu.cn. It updates itself. It attests a signed observation - not that the site is safe.

<a href="https://domaindrift.io/t/sdu.edu.cn">
  <img src="https://domaindrift.io/badge/sdu.edu.cn.svg"
       width="300" height="64" alt="DomainDrift signed observations for sdu.edu.cn">
</a>

Ed25519 Receipt

Receipt ID: rcpt_a4a5c53df84aadb1
Output Hash: 0fd5fb970158b24d3005d093131d2911bbbf32b87a7bd0fabf5a7e11f7b74d87
Signature: ed25519:dd63b2de095667cbd011974a56d579115826f54da4a78efb6bb942cb1e0ccb7bd2f9d7dc692750e7b855ac124ba4636cb18c56bdfb1efc214aa2bfefa242ce07
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

Verify this in your browser

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