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 r-type.ca

Valid
Issued by (CA)
Let's Encrypt
Subject
r-type.ca
Valid from
Jun 1, 2026
Valid until
Aug 30, 2026 (30 days remaining)
Public key
RSA 2048-bit
Serial
06CB63A0A6BF6D5F70B76A64BE6762B834A7
SHA-256 fingerprint
DA:4B:5A:73:CF:1A:E7:A4:6B:8D:63:81:EC:DA:6A:5D:AE:EB:89:1E:B0:D7:96:8E:48:99:18:31:DD:C6:E9:1B
Chain
YR2 → Root YR → ISRG Root X1
Subject Alternative Names (4)
*.r-type.ca, *.r-type.us, r-type.ca, r-type.us

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 Jul 27, 2026.

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This is today's certificate. Turn on monitoring and we'll watch r-type.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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