zuidas.nl
Observed Aug 2, 2026, 12:55 UTC (23h 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
IPv6 · tranco
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat zuidas.nl actually stands on - every host below is a signed observation
zuidas.nl
A / AAAA
54.228.204.1932a05:d018:38a:5b00:58e5:bb20:91d5:85c
2a05serves the site
NS
a1-140.akam.neta6-64.akam.neta5-65.akam.neta12-67.akam.net+2 more
akam.netanswers its DNS
MX
zuidas-nl.mail.protection.outlook.com
Microsoft 365receives its email
TLS
zuidas.nl
Let's Encryptissued its certificate
DNS Records
A 1
54.228.204.193
AAAA 1
2a05:d018:38a:5b00:58e5:bb20:91d5:85c
MX 1
10zuidas-nl.mail.protection.outlook.com
TXT 1
v=spf1 ip4:168.245.22.166 ip4:46.17.24.3 ip4:46.17.25.3 ip6:2a07:3500:1020:1117::140/123 include:spf.mandrillapp.com include:spf.mailinglijst.nl include:spf.protection.outlook.com include:secumail.email -all
NS 6
a1-140.akam.neta6-64.akam.neta5-65.akam.neta12-67.akam.neta26-65.akam.neta11-64.akam.net
SOA 1
a1-140.akam.net servicedesk.motiv.nl
DMARC_RECORDS 1
v=DMARC1; p=reject; sp=reject; rua=mailto:5m3havss@ag.eu.dmarcadvisor.com; rf=afrf;
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
zuidas.nl |
C=US, O=Let's Encrypt, CN=YR2 | Wed, 02 Sep 2026 01:40:55 +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 (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 receiptEd25519 Receipt
- Receipt ID
rcpt_6d9715af47ee50a6- Output Hash
37af90fb1eb14d7b0fbad87f4f1cfc2df2eab65e7d87416cc12b490f834834f5- Signature
ed25519:357bea7136d97188fd5e2dfd16bc5cbba13bc5cd212c959afb7c08531ad1e880ab6f114845d4c29752bc47ebcab3108b363e666c21f3797722c230fa0ad6fe05- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast