yrno.sk
Observed Aug 2, 2026, 10:16 UTC (13h 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.
DomainDrift asked this domain for a TXT record at a name nobody registers, and got an answer back. A domain that answers a name that was never created is answering names in general, and that is wildcard DNS.
Wildcard DNS clusters around domain parking, dynamic DNS and catch-all hosting. It is also a real attack surface: if every invented hostname resolves, then a hostname an attacker invents resolves too, which is the ground state for subdomain takeover and for phishing hosted under a name that looks legitimate.
This is evidence of wildcard behaviour, not a proven fact. It rests on one control name: a domain could legitimately serve a TXT record at exactly that name for an unrelated reason, and a wildcard that answers address records but not TXT records would not be caught here at all. What this reading is and is not.
DNS Records
A 1
93.185.103.36
AAAA 1
2a00:1ed0:4b:1::3
TXT 1
google-site-verification=vdZDBI8M9Un6CBKsel-x5suv6bNirj3Ufs96hUOIH7Y
NS 3
ns.forpsi.czns.forpsi.itns.forpsi.net
SOA 1
ns.forpsi.net admin.forpsi.com
CAA 3
iodef "mailto:papousek@epstudio.cz"issue "letsencrypt.org"issuewild ""
MCP_RECORDS 1
google-site-verification=vdZDBI8M9Un6CBKsel-x5suv6bNirj3Ufs96hUOIH7Y
DMARC_RECORDS 1
google-site-verification=vdZDBI8M9Un6CBKsel-x5suv6bNirj3Ufs96hUOIH7Y
BIMI_RECORDS 1
google-site-verification=vdZDBI8M9Un6CBKsel-x5suv6bNirj3Ufs96hUOIH7Y
MTA_STS_RECORDS 1
google-site-verification=vdZDBI8M9Un6CBKsel-x5suv6bNirj3Ufs96hUOIH7Y
TLS Certificates (4)
| Common Name | Issuer | Expires |
|---|---|---|
web0.epstudio.cz |
C=US, O=Let's Encrypt, CN=YE2 | Thu, 22 Oct 2026 04:18:14 +0000 |
YE2 |
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 (2)
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_b735510de12e3722- Output Hash
4c21aaaf1d9d98edfbd66d64a1b041df5a742950e0a8229fc6c5897fabc8a9dd- Signature
ed25519:8e1bc7d86903e2410d1a1658e213f00da743ec7f0d1cc4aa03b2639bdc6c2269ac725d2e99e890cca6bf2b6a4532850b199c5150c4d45382260647a4797d5306- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast