leblanc.io
Observed Aug 6, 2026, 05:43 UTC (22h 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
51.75.144.174
AAAA 1
2001:41d0:700:1dae::
MX 3
1mx1.ovh.net5mx2.ovh.net100mxb.ovh.net
TXT 2
v=spf1 a mx include:mx.ovh.com -allkeybase-site-verification=wWZmxoHCXX_wF_ta2kl_ZQrD3UicYjgxuentQVyRxQQ
NS 2
ns106.ovh.netdns106.ovh.net
SOA 1
dns106.ovh.net tech.ovh.net
MCP_RECORDS 1
v=spf1 a ra=postmaster -all
DMARC_RECORDS 1
v=spf1 a ra=postmaster -all
BIMI_RECORDS 1
v=spf1 a ra=postmaster -all
MTA_STS_RECORDS 1
v=spf1 a ra=postmaster -all
TLS Certificates (4)
| Common Name | Issuer | Expires |
|---|---|---|
leblanc.io |
C=US, O=Let's Encrypt, CN=YE1 | Mon, 21 Sep 2026 18:51:58 +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 (0)
None observed.
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_44625b594eb79982- Output Hash
146ac69a287c12e9e5d06d85cf73c97e3d7efa7fbfae6c4984891d5c48552db5- Signature
ed25519:9dc8b5bea92c1152232993c0ee8771b628684eb134109dfbab1b5bbcbf996a6fcf7437f097282550f147b428262460bd985d05988ecf3cb180447c13d6078f0e- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast