SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
SSL/TLS Certificate for as-k.me
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- *.as-k.me
- Valid from
- Apr 7, 2026
- Valid until
- Oct 18, 2026 (79 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 627A4F9D8E17E1074CE2BCE2EB7C157B
- SHA-256 fingerprint
- A1:D8:64:71:E1:6E:1F:C9:36:C4:BB:DF:9A:DD:08:C1:B0:FB:41:F3:6D:07:AA:A7:63:B3:C8:96:7B:02:2E:78
- Chain
- Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by as-k.me's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch as-k.me 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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