postoffice.co.uk

Observed Jul 22, 2026, 00:56 UTC (1d 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 onAkamai International B.V

Email byMimecast

Secured byLet's Encrypt

Registered withMarkmonitor Inc.

Also usesGoogle Search ConsoleAtlassian

IPv6 · 24 subdomains · tranco_40k

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

INFRASTRUCTURE MAPwhat postoffice.co.uk actually stands on - every host below is a signed observation

postoffice.co.uk

A / AAAA

23.221.227.21723.221.227.2272600:1408:c400:11::17cd:6b5b2600:1408:c400:11::17cd:6b4f

Akamai International B.Vserves the site

a2-64.akam.neta12-65.akam.neta1-59.akam.neta13-67.akam.net+2 more

akam.netanswers its DNS

eu-smtp-inbound-1.mimecast.comeu-smtp-inbound-2.mimecast.com

Mimecastreceives its email

TLS

www.postoffice.co.uk

Let's Encryptissued its certificate

DNS Records

A 2

23.221.227.217
23.221.227.227

AAAA 2

2600:1408:c400:11::17cd:6b5b
2600:1408:c400:11::17cd:6b4f

MX 2

5eu-smtp-inbound-1.mimecast.com
5eu-smtp-inbound-2.mimecast.com

TXT 22

asvdns_ce1be1d0-c649-4d4d-914a-4723a84ddfd0
google-site-verification=7tNagvYW7ZfVFtlh137vYtrFVa9zfTlB_zQXVra-4Jw
str7z0qd5sm76m407w3mzpktss2jh05z
0gtkfw2yg36xkx2z3hq5n8sdxf4shcb6
0b5681d4de644757be50cd0d4bb829c7
tc24pypwh8zrx9sm5x9dqrfj0y6sqpvj
blhhqlt51ll46bq7jthrgl3jg55m86tq
00d4l000000cs6guas
brevo-code:70df7540dafa8ea20f0eccbc493bb5ae
apple-domain-verification=u9ZMIVALbmhg6Nxh

NS 6

a2-64.akam.net
a12-65.akam.net
a1-59.akam.net
a13-67.akam.net
a24-64.akam.net
a5-64.akam.net

SOA 1

a1-59.akam.net hostmaster.postoffice.co.uk

TLS Certificates (3)

Common Name	Issuer	Expires
`www.postoffice.co.uk`	C=US, O=Let's Encrypt, CN=YR2	Mon, 12 Oct 2026 07:33:58 +0000
`YR2`	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 (24)

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

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

Ed25519 Receipt

Receipt ID: rcpt_dba3b69eb5bfe2e9
Output Hash: b7467c863a929239264c6ede83e856522325d70e3916e45d15831e5bbb28b8d9
Signature: ed25519:d89a891cbace97d37d793af425f6859d23f78d159b4b50770c0df75cc75deea0adaddc876f11c40c38955be570add143c760356c84e3412ff16e58e9976aa101
Public Key: ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8
Parent: (genesis)
Plane: fast

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