ustc.ac.uk

Observed Jul 26, 2026, 08:56 UTC (7d 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

Secured byLet's Encrypt

1 subdomain · majestic

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

INFRASTRUCTURE MAPwhat ustc.ac.uk actually stands on - every host below is a signed observation

ustc.ac.uk

A / AAAA

138.251.7.32

unattributedserves the site

ns2.st-and.ac.ukns1.st-and.ac.uk

st-and.ac.ukanswers its DNS

mx05.st-andrews.ac.ukmx04.st-andrews.ac.ukmx01.st-andrews.ac.ukmx02.st-andrews.ac.uk+1 more

st-andrews.ac.ukreceives its email

TLS

www.ustc.ac.uk

Let's Encryptissued its certificate

DNS Records

A 1

138.251.7.32

MX 5

5mx05.st-andrews.ac.uk
5mx04.st-andrews.ac.uk
5mx01.st-andrews.ac.uk
5mx02.st-andrews.ac.uk
5mx03.st-andrews.ac.uk

TXT 1

QuoVadis=ff7853c2-e377-4ee1-9061-9b92db63ebb2

NS 2

ns2.st-and.ac.uk
ns1.st-and.ac.uk

SOA 1

ns0.st-and.ac.uk dns-admin.st-andrews.ac.uk

TLS Certificates (5)

Common Name	Issuer	Expires
`www.ustc.ac.uk`	C=US, O=Let's Encrypt, CN=YE1	Sat, 29 Aug 2026 08:45:15 +0000
`www.ustc.ac.uk`	C=US, O=Let's Encrypt, CN=YE1	Sat, 29 Aug 2026 08:45:15 +0000
`YE1`	C=US, O=ISRG, CN=Root YE	Sat, 02 Sep 2028 23:59:59 +0000
`Root YE`	C=US, O=Internet Security Research Group, CN=ISRG Root X2	Thu, 02 Sep 2032 23:59:59 +0000
`ISRG Root X2`	C=US, O=Internet Security Research Group, CN=ISRG Root X1	Thu, 02 Sep 2032 23:59:59 +0000

Subdomains (1)

www.ustc.ac.uk

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 ustc.ac.uk. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_39790eda8d8e6e75
Output Hash: 19da7162b7781c1a965b5bec9f50d789e04d7d8029e1e66fc10365a2b17e1d4d
Signature: ed25519:bff84ac968831e1bb349cf0e7ddab8de561860c4e13233c9ab47c0f90619f2901253283e5d678fe43d72627f18f32354ca7457273e1b7ea40cb2e2cc1f1b3800
Public Key: ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9
Parent: (genesis)
Plane: fast

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