zm.nu
Observed Jul 27, 2026, 09:17 UTC (6d 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
Also usesGoogle Search Console
2 subdomains · domcop
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat zm.nu actually stands on - every host below is a signed observation
zm.nu
A / AAAA
164.132.209.67
unattributedserves the site
NS
ns1.o2switch.netns2.o2switch.net
o2switch.netanswers its DNS
MX
mail.zm.nu
zm.nureceives its email
TLS
zm.nu
Let's Encryptissued its certificate
DNS Records
A 1
164.132.209.67
MX 1
0mail.zm.nu
TXT 3
google-site-verification=8sSMcYiKmGQhLyHuvzLNSN-jI9oMU2bncfKSo8SuMkQv=spf1 ip4:109.234.166.65 +a +mx +include:spf.jabatus.fr ~allv=DMARC1; p=none;
NS 2
ns1.o2switch.netns2.o2switch.net
SOA 1
ns1.o2switch.net sysadmin.o2switch.fr
SRV 1
cpanelemaildiscovery.cpanel.net:443 p0
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
zm.nu |
C=US, O=Let's Encrypt, CN=YR1 | Sun, 06 Sep 2026 14:41:01 +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 (2)
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_1a7b423da1d240b2- Output Hash
4201694f85d2c54e1c39369df34ea42fa1b4a3462bd1a2f8a99bb063878c902a- Signature
ed25519:4734f767b0ef7e193a46873baf19860a81577a4f41decd0d4fad39fc231bd7e9187707119beb7d066d4f981ade9c360a147efdcb383de310f5f58946bcf3a805- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast