arnolfini.org.uk
Observed Jul 22, 2026, 23:19 UTC (2d 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
Email byMicrosoft 365
Secured byLet's Encrypt
1 subdomain · tranco
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat arnolfini.org.uk actually stands on - every host below is a signed observation
arnolfini.org.uk
A / AAAA
18.168.75.29
unattributedserves the site
NS
ns2.phase8.netns1.phase8.netns0.phase8.net
phase8.netanswers its DNS
MX
arnolfini-org-uk.mail.protection.outlook.com
Microsoft 365receives its email
TLS
arnolfini.org.uk
Let's Encryptissued its certificate
DNS Records
A 1
18.168.75.29
MX 1
0arnolfini-org-uk.mail.protection.outlook.com
TXT 3
v=spf1 mx ip4:62.249.236.154 ip4:80.194.73.158/32 ip4:109.233.50.4/32 ip4:178.78.121.30/32 ip4:81.31.122.186 ip4:195.40.87.147 ip4:195.40.87.146 ip4:46.65.172.227/29 ip4:205.201.128.0/20 ip4:80.176.142.209 ip4:5.133.20.0/24 ip4:198.2.128.0/18 ip4:209.102.220.0/22 ip4:216.32.146.0/23 ip4:31.3.236.165 include:spf.protection.outlook.com include:_spf.elasticemail.com -allMS=ms55262950v=DMARC1; p=quarantine; rua=mailto:hostmaster@arnolfini.org.uk
NS 3
ns2.phase8.netns1.phase8.netns0.phase8.net
SOA 1
ns0.phase8.net support.phase8.net
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
arnolfini.org.uk |
C=US, O=Let's Encrypt, CN=YR2 | Sat, 29 Aug 2026 12:57:52 +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 (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; nothing leaves your machine.
Verify this receiptEd25519 Receipt
- Receipt ID
rcpt_3248c50964325cd6- Output Hash
3277bc6657eb3ce8e6374e112ca38e3af91f658ece2ad64cc23c1c69599bc2b7- Signature
ed25519:51ea3ca9b201f70698dfff0be170b5a4a79ee8d0d6009cff848240b9d1e503c8f68ad16fe5be2f847f32a91d7323f4dfb79f23710db8f0590be70ba59af31d0f- Public Key
ed25519:178c3bd0f57d9d64b83cc4630753381e1a465005a2bbba3d032371f24af0bfd8- Parent
(genesis)- Plane
- fast