mattr.co.uk
Observed Aug 16, 2026, 13:42 UTC (8h 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.
Up right now
Secured byLet's Encrypt
Let's EncryptAlso usesAppleGoogle Search Console
Apple
Google Search ConsoleIPv6 · 1 subdomain · domcop
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat mattr.co.uk actually stands on - every host below is a signed observation
mattr.co.uk
A / AAAA
185.151.30.1982a07:7800::198
2a07serves the site
NS
ns2.stackdns.comns4.stackdns.comns3.stackdns.comns1.stackdns.com
stackdns.comanswers its DNS
MX
mx01.mail.icloud.commx02.mail.icloud.com
icloud.comreceives its email
TLS
*.testing.mattr.co.uk
Let's Encryptissued its certificate
DNS Records
A 1
185.151.30.198
AAAA 1
2a07:7800::198
MX 2
10mx01.mail.icloud.com10mx02.mail.icloud.com
TXT 5
v=spf1 include:icloud.com allapple-domain-verification=6EpO858RzdYvGcdigoogle-site-verification=6CPmpnQjMOJS_Zdyu8n_tUn-B8gJkW8zVXbBtwihggkgoogle-site-verification=4pSk8MPzcg9R9flcCfc0RaBRD61u2usGKfq5n615r7Iapple-domain=yZ6IoIk0ze723pIl
NS 4
ns2.stackdns.comns4.stackdns.comns3.stackdns.comns1.stackdns.com
SOA 1
ns1.stackdns.com hostmaster.stackdns.com
DMARC_RECORDS 1
v=DMARC1;p=reject;sp=none;adkim=r;aspf=r;pct=100;rf=afrf;ri=86400
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
*.testing.mattr.co.uk |
C=US, O=Let's Encrypt, CN=YR1 | Sat, 03 Oct 2026 00:08:39 +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 (1)
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; the only network request the check makes is for the published public keys.
Verify this receiptEd25519 Receipt
- Receipt ID
rcpt_4c65c0f94a727cf4- Output Hash
8ae6bea93ec0e90d15b06f4c8e95a2d73738d1aa4d959669d1c3efe7dbd30c91- Signature
ed25519:e8f939321eaefb41c1ce6e5b2c85ff71a9bcb9a0277ea9d5c8fd4b45c582bf300583d95ae5b9f53246387a6ac18e128f1d6423416037cd2e8892e81d4dee850f- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast