jcz.dev
Observed Aug 16, 2026, 07:41 UTC (4h 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
Let's EncryptAlso usesHosted Email
1 subdomain · domcop
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat jcz.dev actually stands on - every host below is a signed observation
jcz.dev
A / AAAA
99.83.231.6175.2.60.5
unattributedserves the site
NS
dana.ns.cloudflare.comhugh.ns.cloudflare.com
cloudflare.comanswers its DNS
MX
aspmx1.migadu.comaspmx2.migadu.com
migadu.comreceives its email
TLS
jcz.dev
Let's Encryptissued its certificate
DNS Records
A 2
99.83.231.6175.2.60.5
MX 2
10aspmx1.migadu.com20aspmx2.migadu.com
TXT 2
hosted-email-verify=oznmtj6xv=spf1 include:spf.migadu.com -all
NS 2
dana.ns.cloudflare.comhugh.ns.cloudflare.com
SOA 1
dana.ns.cloudflare.com dns.cloudflare.com
DMARC_RECORDS 1
v=DMARC1; p=quarantine;
TLS Certificates (4)
| Common Name | Issuer | Expires |
|---|---|---|
jcz.dev |
C=US, O=Let's Encrypt, CN=YE1 | Wed, 07 Oct 2026 13:43:48 +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 (1)
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; the only network request the check makes is for the published public keys.
Verify this receiptEd25519 Receipt
- Receipt ID
rcpt_2a78b450810bab1a- Output Hash
ff1b4522cbc29066fbeb6806c9a01f22de523d211ac16e299a57d6d7f0ea3b07- Signature
ed25519:ab3971d95a4e8c18043386293122cabe44582e3770f314d6b02192705a803a93d56ea318c95b282ddc5e6845316d7a789250ab8718192a8b64ab780599e16400- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast