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 janpetersoncdc.com

Valid
Issued by (CA)
Sectigo Limited
Subject
janpetersoncdc.com
Valid from
Mar 27, 2026
Valid until
Oct 11, 2026 (32 days remaining)
Public key
EC 384-bit
Serial
AAB0DFF31685015CF3CFB0F052BE255C
SHA-256 fingerprint
5A:A4:E7:85:95:A9:5F:A9:6F:DA:B8:14:03:D5:A8:EA:A3:5A:F3:7D:86:55:6E:31:0C:27:04:B4:0D:02:45:4A
Chain
Sectigo Public Server Authentication CA DV E36 → Sectigo Public Server Authentication Root E46
Subject Alternative Names (2)
janpetersoncdc.com, www.janpetersoncdc.com

Certificate Authority Authorization (CAA)

The serving CA (Sectigo Limited) is authorized by this domain's CAA records (sectigo.com).

This certificate has been served since Sep 1, 2026.

Never get surprised by janpetersoncdc.com's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch janpetersoncdc.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, 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.

Monitor this certificate free

Free for your first domain: uptime, DNS, and certificate together. No credit card.