SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
lac-bac.gc.ca
SSL/TLS Certificate
SSL/TLS Certificate for lac-bac.gc.ca
Valid- Issued by (CA)
- Entrust Limited
- Subject
- *.library-archives.canada.ca
- Valid from
- May 20, 2026
- Valid until
- Dec 4, 2026 (117 days remaining)
- Public key
- RSA 2048-bit
- Serial
- B05A4994D006EBDB307BFA63CDB30B7F
- SHA-256 fingerprint
- B5:D4:34:B8:F7:A8:07:49:FE:13:CA:95:49:9D:9D:41:50:71:3E:71:97:2B:B1:F0:31:E2:A9:0F:A2:16:6D:19
- Chain
- Entrust OV TLS Issuing RSA CA 2 → Sectigo Public Server Authentication Root R46
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by lac-bac.gc.ca's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch lac-bac.gc.ca 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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