SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
bas-cis.com
SSL/TLS Certificate
SSL/TLS Certificate for bas-cis.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- bas-cis.com
- Valid from
- Sep 1, 2026
- Valid until
- Nov 30, 2026 (43 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 065A58A4D341806F0917AE2E9CBA98775E53
- SHA-256 fingerprint
- 66:28:DB:31:F9:BE:D1:3A:19:DB:35:EC:76:16:C4:4E:53:87:B0:B6:82:2E:C8:C8:0D:92:77:72:FC:01:2C:58
- Chain
- YR2 → Root YR → 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 Oct 2, 2026.
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This is today's certificate. Turn on monitoring and we'll watch bas-cis.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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