dupe.cz
Observed Jul 24, 2026, 20:04 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.
Guarded by a firewall
Runs onCloudflare
Email byZoho Mail
Secured byGoogle Trust Services
IPv6 · tranco_100k
Every line above is a signed observation. Check the math at the bottom of the page.
INFRASTRUCTURE MAPwhat dupe.cz actually stands on - every host below is a signed observation
dupe.cz
A / AAAA
172.67.74.213104.26.8.91104.26.9.912606:4700:20::ac43:4ad5+2 more
Cloudflareserves the site
NS
kay.ns.cloudflare.comken.ns.cloudflare.com
cloudflare.comanswers its DNS
MX
mx.zoho.eumx2.zoho.eumx3.zoho.eu
Zoho Mailreceives its email
TLS
dupe.cz
Google Trust Servicesissued its certificate
DNS Records
A 3
172.67.74.213104.26.8.91104.26.9.91
AAAA 3
2606:4700:20::ac43:4ad52606:4700:20::681a:85b2606:4700:20::681a:95b
MX 3
10mx.zoho.eu20mx2.zoho.eu50mx3.zoho.eu
TXT 2
v=spf1 mx a ip4:78.108.101.131 include:_spf.elasticemail.com include:spf.zoho.eu include:_spf.google.com ~allv=DMARC1;p=none;
NS 2
kay.ns.cloudflare.comken.ns.cloudflare.com
SOA 1
kay.ns.cloudflare.com dns.cloudflare.com
CAA 10
issue "comodoca.com"issue "digicert.com; cansignhttpexchanges=yes"issue "letsencrypt.org"issue "pki.goog; cansignhttpexchanges=yes"issue "ssl.com"issuewild "comodoca.com"issuewild "digicert.com; cansignhttpexchanges=yes"issuewild "letsencrypt.org"issuewild "pki.goog; cansignhttpexchanges=yes"issuewild "ssl.com"
TLS Certificates (3)
| Common Name | Issuer | Expires |
|---|---|---|
dupe.cz |
C=US, O=Google Trust Services, CN=WE1 | Tue, 29 Sep 2026 16:26:22 +0000 |
WE1 |
C=US, O=Google Trust Services LLC, CN=GTS Root R4 | Tue, 20 Feb 2029 14:00:00 +0000 |
GTS Root R4 |
C=BE, O=GlobalSign nv-sa, 2.5.4.11=Root CA, CN=GlobalSign Root CA | Fri, 28 Jan 2028 00:00:42 +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_84a0794636a26b33- Output Hash
d68c3297b88555f235e03872688921281aa03709bc34bf08cb92a4fc310203af- Signature
ed25519:45fb96cc1b1c1e3f64bef9adf12d28d95bdc75fcba5177ab5cb84c611120ab4353cf55fbfe65e3e6f99d7a3896d90d4269cd0620afb513c0735ea4da700d8d07- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast