SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
auth-dns.com
SSL/TLS Certificate
SSL/TLS Certificate for auth-dns.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- auth-dns.com
- Valid from
- Jul 16, 2026
- Valid until
- Oct 14, 2026 (74 days remaining)
- Public key
- EC 256-bit
- Serial
- 05A946471F2801A71D57EA4D9E41CF33B2A9
- SHA-256 fingerprint
- 4D:D7:65:04:27:6A:95:F5:00:BD:4F:DD:B6:D5:D4:B2:5D:2C:07:A1:F9:19:70:3E:96:CF:08:8C:66:D3:9F:A9
- Chain
- YE1 → Root YE → ISRG Root X2 → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
This certificate has been served since Jul 29, 2026.
Never get surprised by auth-dns.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch auth-dns.com continuously, notifying you the moment anything moves across all three signals:
Uptime
We visit the site from multiple regions worldwide and email you within minutes if it goes down, with a per-region breakdown so a real outage stands out from a regional blip.
DNS changes
We watch NS, MX, CAA, DNSSEC, CNAME and A/AAAA records, and identify the host, network, and ASN behind them, so a real migration or hijack stands out from routine noise.
TLS certificate
We warn you 30, 14, 7, and 1 days before it expires, and flag it if the issuing authority changes or the certificate is unexpectedly replaced.
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