stem.org.uk

Observed Jul 21, 2026, 16:42 UTC (20h 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 byLet's Encrypt

Registered withSTEM Learning Limited t/a National STEM Learning Centre

Also usesAtlassianGoogle Search Console

tranco_100k

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

INFRASTRUCTURE MAPwhat stem.org.uk actually stands on - every host below is a signed observation

stem.org.uk

A / AAAA

216.150.1.1

Cloudflareserves the site

liv.ns.cloudflare.compranab.ns.cloudflare.com

cloudflare.comanswers its DNS

stem-org-uk.mail.protection.outlook.com

Microsoft 365receives its email

TLS

stem.org.uk

Let's Encryptissued its certificate

DNS Records

A 1

216.150.1.1

MX 1

0stem-org-uk.mail.protection.outlook.com

TXT 19

38brahjf4ub37man7uhf9t8h89
48on5io73kddtvb3aeqhgfuaoc
8573F420-F87A-4CF1-8099-B51AD04BB7F0
MS=ms85608630
QuoVadis=9786755d-0925-4401-a7ac-8c72ad09b119
Rgr3TfQvX0mnewP7ZLCW63sb7rs06/qWEOYnPlq3EiQ0b9MVR3rwq/9qIEh54boXghlOwulpQCl80KC72Zbn/A==
adobe-idp-site-verification=4c220610-0187-4b23-9b40-87a7a0c43c25
atlassian-domain-verification=7DCoitX466nfLtf0snalk/KGrgiCS4LXwMDAgRDHBSXIRPqKNNCYdaXCX6t8cAyg
bgg6vq223fq4vh9tbajs3hcn12
google-site-verification=-DrYnmDKZ0pXMbe97dfq5kQjit_n2pmiB12ui3xetXU

NS 2

liv.ns.cloudflare.com
pranab.ns.cloudflare.com

SOA 1

liv.ns.cloudflare.com dns.cloudflare.com

CAA 14

issue "amazon.com"
issue "amazonaws.com"
issue "amazontrust.com"
issue "awstrust.com"
issue "comodoca.com"
issue "digicert.com; cansignhttpexchanges=yes"
issue "letsencrypt.org"
issue "pki.goog; cansignhttpexchanges=yes"
issue "ssl.com"
issuewild "comodoca.com"

TLS Certificates (3)

Common Name	Issuer	Expires
`stem.org.uk`	C=US, O=Let's Encrypt, CN=YR1	Fri, 16 Oct 2026 23:59:12 +0000
`YR1`	C=US, O=ISRG, CN=Root YR	Sat, 02 Sep 2028 23:59:59 +0000
`Root YR`	C=US, O=Internet Security Research Group, CN=ISRG Root X1	Thu, 02 Sep 2032 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 receipt

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

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

Ed25519 Receipt

Receipt ID: rcpt_38cdff4d17817cc2
Output Hash: 464e642335a8f7d6c14bd43827f028fae4aee463b2e6851fee5972db1a30ef93
Signature: ed25519:1625a1b3ae55380b6dcf6326641f4b22eba2d0c014c8fe7a05c36e97131b7d7c8747acb475e204198d1523b9c6ace5276bf1ae9db08e412c114bcb22e18f080b
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

Verify this in your browser

Permalink: https://domaindrift.io/t/stem.org.uk