refdag.nl
Observed Jul 28, 2026, 00:43 UTC (15h 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
Also usesGoogle Search Console
tranco
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat refdag.nl actually stands on - every host below is a signed observation
refdag.nl
A / AAAA
188.166.135.27
unattributedserves the site
NS
ns0.transip.netns1.transip.nlns2.transip.eu
transip.net + transip.nl + moreanswers its DNS
MX
refdag-nl.mail.protection.outlook.com
Microsoft 365receives its email
TLS
refdag.nl
Let's Encryptissued its certificate
DNS Records
A 1
188.166.135.27
MX 1
5refdag-nl.mail.protection.outlook.com
TXT 13
MS=ms31846136v=spf1 include:_spf.erdee.nl ~allhibp-verify=dweb_hhnzzliwj12fskrcar79ztti9f7feeab5834b737452f2de21ad6a9e8 - KnowBe4apple-domain-verification=lp7JyPz8pMf89puHjamf-site-verification=1mt-5XGXLLtMVNig-WhDdQgoogle-site-verification=8Dep22CEFKlXZ3vQwKUWuqntuCmYJJAhAtULGBHoDsogoogle-site-verification=CKeKejtmaJH9K6aHC-gK_guFos0prTfX50Z9msKE3icgoogle-site-verification=OPrdeVKDdNANx_Jtw13lCkqs-P__twjGuicItPqFuAIgoogle-site-verification=yqjSEMV4G7_XK_v4PCl7t5oXBpoZjaVzMPPhiU9IHLQ
NS 3
ns0.transip.netns1.transip.nlns2.transip.eu
SOA 1
ns0.transip.net hostmaster.transip.nl
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
refdag.nl |
C=US, O=Let's Encrypt, CN=YR1 | Sun, 20 Sep 2026 05:36:39 +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 (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_b200a2b81d0e6a8b- Output Hash
0cce7240567b835fecd8e8fe4ae8959c77c54d7440f3834c985c61673aef85ec- Signature
ed25519:f029a2148ac47ae6eacb676db9bb2cfd45b85b33a69ca6a1b62bf76998f41aec513a0dfd7f71c620f4aa8004b3de3730170676b0340de4537387d6bd6e0f210d- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast