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 itsch.edu.mx

Self-signed
Issued by (CA)
localhost
Subject
localhost
Valid from
Apr 24, 2022
Valid until
Apr 21, 2032 (2070 days remaining)
Public key
RSA 2048-bit
Serial
03D057E6CC4DF67C708472494E9B4564DA1F7ACF
SHA-256 fingerprint
00:B3:45:F6:37:C0:4D:99:85:BE:54:67:55:C4:90:20:A2:16:CD:F9:92:8E:91:9A:BF:BE:C8:C0:CE:2B:F8:8E
Chain
localhost
Subject Alternative Names (1)
localhost

Certificate Authority Authorization (CAA)

No CAA policy is published for this domain — any certificate authority may issue for it.

Never get surprised by itsch.edu.mx's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch itsch.edu.mx 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.