duwo.nl
Observed Jul 29, 2026, 03:22 UTC (9h 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
Runs onCloudflare
Email byMicrosoft 365
Secured byLet's Encrypt
tranco
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat duwo.nl actually stands on - every host below is a signed observation
duwo.nl
A / AAAA
20.113.80.42
Cloudflareserves the site
NS
ns1.kpn.netns11.kpn.net
kpn.netanswers its DNS
MX
duwo-nl.mail.protection.outlook.com
Microsoft 365receives its email
TLS
duwo.nl
Let's Encryptissued its certificate
DNS Records
A 1
20.113.80.42
MX 1
5duwo-nl.mail.protection.outlook.com
TXT 6
MS=ms35821962MS=ms71191792Sendinblue-code:694922d072db0e33f90173a609a58d45PyaJU5TXyusHzMm2Nk8fkOy0DKGJlfDSZd+KTJeccyPPkPK2sLZjLqXBYSl1XKpIZCrGWJjWvk3L1/MaCObvVQ==v=spf1 mx include:spf.topdesk.net include:spf.protection.outlook.com include:_spf.axxerion.com include:_spf.duwo.nl include:spf.sendinblue.com include:spf.afas.online include:_spf1.solvinity.com include:_spf2.solvinity.com include:relays.beveiligdmailen.nl -allv=DMARC1; p=quarantine; rua=mailto:dmarc@duwo.nl; ruf=mailto:dmarc@duwo.nl;
NS 2
ns1.kpn.netns11.kpn.net
SOA 1
ns1.kpn.net zonemaster.kpn.com
TLS Certificates (4)
| Common Name | Issuer | Expires |
|---|---|---|
duwo.nl |
C=US, O=Let's Encrypt, CN=YE1 | Wed, 14 Oct 2026 11:34:07 +0000 |
YE1 |
C=US, O=ISRG, CN=Root YE | Sat, 02 Sep 2028 23:59:59 +0000 |
Root YE |
C=US, O=Internet Security Research Group, CN=ISRG Root X2 | Thu, 02 Sep 2032 23:59:59 +0000 |
ISRG Root X2 |
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_6914150607d3701e- Output Hash
e1b2131dda0741ff407487b5f1eb1d1045715dab9fb644582f598b49eb48f8fc- Signature
ed25519:c20f16c1b00481b50926c57348b5449858312bb472795c31552fdd933dcd58875e5d5d309f43351140560b53abb1c4d10c053bf1daddd145f091cb4adf1b0204- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast