open.edu

Observed Jul 21, 2026, 19:38 UTC (11h 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

Guarded by a firewall

Runs onCloudflare

Email byMicrosoft 365

Secured bySectigo

Also usesGoogle Search Console

2 subdomains · push_legacy

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

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

open.edu

A / AAAA

137.108.200.104

Cloudflareserves the site

dns3.easydns.orgdns2.easydns.netdns1.easydns.comnse-2.open.ac.uk+2 more

easydns.org + easydns.net + moreanswers its DNS

open-edu.mail.protection.outlook.com

Microsoft 365receives its email

TLS

open.edu

Sectigo Limitedissued its certificate

DNS Records

A 1

137.108.200.104

MX 1

10open-edu.mail.protection.outlook.com

TXT 5

v=spf1 include:spf.protection.outlook.com ip4:137.108.232.47 ip4:137.108.232.48 ip4:137.108.170.8 ip4:137.108.170.38 ip4:137.108.170.40 ip4:137.108.185.44 -all
QuoVadis=9a987046-9ec6-40b4-a739-41ad71aa5c85
B6B0975F-29DA-4863-AD9B-4CE3671954ED
google-site-verification=KLQmkBsMNGjV3_nUmOkJw07lK3ZIXeFBPvilow84wXk
v=DMARC1;p=quarantine;sp=quarantine;pct=100;rua=mailto:dmarc@open.ac.uk,mailto:e1pWdXALyij@dmarc-rua.mailcheck.service.ncsc.gov.uk

NS 6

dns3.easydns.org
dns2.easydns.net
dns1.easydns.com
nse-2.open.ac.uk
nse-1.open.ac.uk
nse-0.open.ac.uk

SOA 1

nse-0.open.ac.uk hostmaster.open.ac.uk

TLS Certificates (4)

Common Name	Issuer	Expires
`open.edu`	C=GB, O=Sectigo Limited, CN=Sectigo Public Server Authentication CA OV R36	Thu, 07 Jan 2027 23:59:59 +0000
`Sectigo Public Server Authentication CA OV R36`	C=GB, O=Sectigo Limited, CN=Sectigo Public Server Authentication Root R46	Fri, 21 Mar 2036 23:59:59 +0000
`Sectigo Public Server Authentication Root R46`	C=US, ST=New Jersey, L=Jersey City, O=The USERTRUST Network, CN=USERTrust RSA Certification Authority	Mon, 18 Jan 2038 23:59:59 +0000
`USERTrust RSA Certification Authority`	C=US, ST=New Jersey, L=Jersey City, O=The USERTRUST Network, CN=USERTrust RSA Certification Authority	Mon, 18 Jan 2038 23:59:59 +0000

Subdomains (2)

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 open.edu. It updates itself. It attests a signed observation - not that the site is safe.

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

Ed25519 Receipt

Receipt ID: rcpt_5993c1326a573e20
Output Hash: 586698d45436660baf8857f8a9537876050ba0859c834309af1e1b3d373113fe
Signature: ed25519:397f52db0036077d3c75f81d6a44a00747c79edfc86f90269cbfda7c0086bbd97890f1b1c1c894b99532bc812c9c1566d0c500c83f0aec25c28ec1b5783dba00
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/open.edu