shef.ac.uk

Observed 2026-07-13T02:53:03.651Z (15h ago). Every field below was attested with an Ed25519 signature at scan time.

Up right now

Runs onCloudflare

Email byGoogle Workspace

Also usesGoogle Search Console

15 subdomains · tranco_20k

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

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

shef.ac.uk

A / AAAA

143.167.2.102

Cloudflareserves the site

ns4.ja.netacheron.shef.ac.ukhippo.shef.ac.uk

ja.net + shef.ac.ukanswers its DNS

aspmx.l.google.comalt2.aspmx.l.google.comalt3.aspmx.l.google.comalt4.aspmx.l.google.com+1 more

Google Workspacereceives its email

HTTPS probe

redirect Redirecting (3xx) 301 → https://www.sheffield.ac.uk/

HTTP status301

Servercloudflare

TLS protocolHTTP/2

TLS issuernot observed

Behind Cloudflareyes

Response time1192 ms

DNS resolutionNOERROR

Redirect chain

https://www.sheffield.ac.uk/

Every field above is part of the same signed observation as the records below. Blank means not observed, never "none".

DNS Records

A 1

143.167.2.102

MX 5

1aspmx.l.google.com
5alt2.aspmx.l.google.com
10alt3.aspmx.l.google.com
10alt4.aspmx.l.google.com
5alt1.aspmx.l.google.com

TXT 8

google-site-verification=isKsdLEuDlo36yj5mOEE565z5MSZ3ZToeKOK5ovSB0U
QuoVadis=b6b1f5bd-5729-453c-9950-107c31ff576a
v=spf1 ip4:143.167.0.0/16 ip4:95.172.88.0/22 ip4:130.88.36.5 ip4:80.93.168.194 ip4:85.92.81.226 ip4:146.177.26.90/31 ip4:146.177.26.108/31 ip4:81.17.56.1 ip4:94.23.120.168 ip4:149.56.182.220 ip4:35.242.247.107 ip4:34.107.8.58 ip4:212.227.126.128/25 ip4:82.165.159.0/26 ip4:212.227.15.0/25 ip4:212.227.17.0/27 ip4:217.72.192.64/26 ip4:74.121.48.4 ip4:31.221.91.141 ip4:212.54.136.59 ip4:31.221.72.237 ip4:35.177.177.249 ip4:35.178.89.45 ip4:50.56.130.220/30 ip4:207.97.204.96/29 ip4:146.20.14.104/30 ip4:164.177.132.168/30 ip4:35.234.108.85/32 ip4:34.90.200.156/32 ip4:35.204.47.209/32 include:_spf.google.com include:wpm.flywire.com include:spf.mailanyone.net include:spf.mandrillapp.com include:shops.shopify.com -all
google-site-verification=xecQmyR2UQAd3OiZbAW_FJHFJPwg8p8uX30nW4o6zOY
fastly-domain-delegation-nswth4upxeqnqveipseg-00624106-2026-03-04
apple-domain-verification=aQwUN0OnGdXEaFv7
v=DMARC1; p=reject; sp=quarantine; rua=mailto:dmarc-rua@dmarc.service.gov.uk,mailto:re+fgkd33bleer@dmarc.postmarkapp.com;
v=STSv1; id=202510182308Z;

NS 3

ns4.ja.net
acheron.shef.ac.uk
hippo.shef.ac.uk

SOA 1

hippo.shef.ac.uk hostmaster.shef.ac.uk

CAA 9

issue amazon.com
issue digicert.com
issuewild sectigo.com
iodef mailto:soc@sheffield.ac.uk
issue letsencrypt.org
issue godaddy.com
issue sectigo.com
issue pki.goog
issuewild letsencrypt.org

TLS Certificates (0)

None.

Subdomains (15)

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

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

Ed25519 Receipt

Receipt ID: 2670e102-1639-4024-9ed2-7c6ce3b7305f
Output Hash: fffa05ff0096c4fdf3917374c4f7923c7910fe1ff7bc88ac884e45ae8ab4d5d7
Signature: ed25519:7586baf4108b395c0ed5fd2a4cd82613caf7f9721b17e3bd5128e11444e2ffe710ff0d0fe7d35022904ec36729182400c6dee3a918a5e3b68b5a03fa01fad406
Public Key: ed25519:d610d74ef18f683e5beb859d241d5e67dff0c122e8928b06bec1c2476f4ba27b
Parent: (genesis)
Plane: fast

Verify this in your browser

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