SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
extrn-sa.ca
SSL/TLS Certificate
SSL/TLS Certificate for extrn-sa.ca
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- extrn-sa.ca
- Valid from
- Jul 14, 2026
- Valid until
- Oct 12, 2026 (62 days remaining)
- Public key
- RSA 3072-bit
- Serial
- 054F00639F1F6966893E566D2968A13D7D24
- SHA-256 fingerprint
- B9:83:5A:12:83:51:DB:CC:1D:09:12:6B:F2:71:71:99:0D:79:27:80:CE:8C:4C:B7:9D:CF:B2:6F:61:96:61:41
- 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.
Never get surprised by extrn-sa.ca's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch extrn-sa.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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