SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
as-sec.com
SSL/TLS Certificate
SSL/TLS Certificate for as-sec.com
Valid- Issued by (CA)
- Google Trust Services
- Subject
- as-sec.com
- Valid from
- Oct 27, 2026
- Valid until
- Jan 25, 2027 (78 days remaining)
- Public key
- RSA 2048-bit
- Serial
- BC22A9C5C8BA9F310DC2AC2D84D73D41
- SHA-256 fingerprint
- 04:71:BB:85:F8:35:E0:2C:37:38:6D:25:CD:32:F3:C7:B8:C5:0A:1F:2E:04:2D:C2:02:C5:67:AD:38:84:A1:28
- Chain
- WR1 → GTS Root R1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
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This is today's certificate. Turn on monitoring and we'll watch as-sec.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, CNAME, TXT 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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