zylstra.org
Observed Jul 26, 2026, 10:08 UTC (7d 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
IPv6 · majestic
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat zylstra.org actually stands on - every host below is a signed observation
zylstra.org
A / AAAA
212.114.120.2212001:7b8:62b:1:0:d4ff:fe72:78dd
2001serves the site
NS
ns3.your-webhost.nlns4.your-webhost.nl
your-webhost.nlanswers its DNS
MX
mail.zylstra.orgmail.zylstra.org
zylstra.orgreceives its email
TLS
zylstra.org
Let's Encryptissued its certificate
DNS Records
A 1
212.114.120.221
AAAA 1
2001:7b8:62b:1:0:d4ff:fe72:78dd
MX 2
10mail.zylstra.org20mail.zylstra.org
TXT 2
v=spf1 ip4:212.114.120.221 ip6:2001:7b8:62b:1:0:d4ff:fe72:78dd a mx ~allv=DMARC1; p=reject; aspf=r; sp=none
NS 2
ns3.your-webhost.nlns4.your-webhost.nl
SOA 1
web401.your-webhost.nl registratie.your-webhost.nl
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
zylstra.org |
C=US, O=Let's Encrypt, CN=YR2 | Sat, 12 Sep 2026 00:08:40 +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_b32760157c2868de- Output Hash
84b886904629aba81bc118ed1e0e07966314991466fa471cca1aaf72d77714ed- Signature
ed25519:19d49b02564824c8d6007848140a148a96d47ea8124f583bde8d2ea4d29ac29529336190d769ef9df16c664bd196a4625ff7023b14c4c96f49bc78b67435e206- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast