linkedin.in
Observed Aug 16, 2026, 18:19 UTC (5h 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.
DigiCertDomainDrift 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
108.174.10.24
AAAA 1
2620:109:c002::6cae:a18
MX 2
10mail-c.linkedin.com10mail.linkedin.com
TXT 4
5wt3yb9yk378c3k623qn87zrq459cz44_i8acwcqnenmjs2pgrtguor1m8y3zsamll12ksx4bhvbpsh713ht0k150ldwttb9v=spf1 -all
NS 4
ns1-42.azure-dns.comns2-42.azure-dns.netns3-42.azure-dns.orgns4-42.azure-dns.info
SOA 1
ns1-42.azure-dns.com azuredns-hostmaster.microsoft.com
CAA 1
contactemail "caarecordaware@microsoft.com"
MCP_RECORDS 2
v=DKIM1; p=v=spf1 -all
DMARC_RECORDS 1
v=DMARC1; p=reject; rua=mailto:d@rua.agari.com,mailto:yfy3q-9359@rua.dmarc.emailanalyst.com; ruf=mailto:d@ruf.agari.com
BIMI_RECORDS 2
v=DKIM1; p=v=spf1 -all
MTA_STS_RECORDS 2
v=DKIM1; p=v=spf1 -all
TLS Certificates (2)
| Common Name | Issuer | Expires |
|---|---|---|
linkedin.at |
C=US, O=DigiCert Inc, CN=DigiCert Global G2 TLS RSA SHA256 2020 CA1 | Sun, 20 Sep 2026 23:59:59 +0000 |
DigiCert Global G2 TLS RSA SHA256 2020 CA1 |
C=US, O=DigiCert Inc, 2.5.4.11=www.digicert.com, CN=DigiCert Global Root G2 | Sat, 29 Mar 2031 23:59:59 +0000 |
Subdomains (1)
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_79f8895b71dd97fc- Output Hash
d729c530f877f97ba7d930ec715189c6cec5b5ee959eba295eed53d10fbe1107- Signature
ed25519:f3517ba1e783609a1025d6a9b3ac9b5eea4483878f0d1be989b6a2f1e2be4327ba3299cb0df096ccb010ce434f51d06cd72929845c248c31ecf0505e13f99d02- Public Key
ed25519:4859bb613d650e12dd7478cc307c73a8712fabc115a9dc59f65534ed3c09a8f9- Parent
(genesis)- Plane
- fast