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 o-connect.ca

Valid
Issued by (CA)
Let's Encrypt
Subject
o-connect.ca
Valid from
Jul 20, 2026
Valid until
Oct 18, 2026 (71 days remaining)
Public key
RSA 2048-bit
Serial
05113128FD5FD775219B6AAD9A5F01D0BF7F
SHA-256 fingerprint
46:69:BC:6D:CE:14:CE:10:58:02:53:67:B9:CC:75:C4:9C:29:38:B5:C6:54:8E:28:1E:61:AF:8D:39:3E:55:1C
Chain
YR1 → Root YR → ISRG Root X1
Subject Alternative Names (2)
o-connect.ca, www.o-connect.ca

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 Aug 7, 2026.

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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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