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 d-komaki.net

Valid
Issued by (CA)
GlobalSign nv-sa
Subject
www.d-komaki.net
Valid from
Oct 8, 2026
Valid until
Apr 25, 2027 (163 days remaining)
Public key
RSA 2048-bit
Serial
01022B6112E8C64072664D7885409F2C
SHA-256 fingerprint
96:2E:97:15:E4:4D:96:A8:A4:8D:33:56:5C:23:5C:32:3B:9B:6A:C2:DF:2E:18:48:12:43:4E:A3:73:78:5D:8E
Chain
GlobalSign Atlas R46 AlphaSSL CA 2026 Q3 → GlobalSign Root R46
Subject Alternative Names (2)
d-komaki.net, www.d-komaki.net

Certificate Authority Authorization (CAA)

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

Never get surprised by d-komaki.net's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch d-komaki.net continuously, notifying you the moment anything moves across all three signals:

Certificate monitor showing the issuer, expiry date, chain status, fingerprint, covered names, and a history of a rotation and an expiry warning

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, CNAME, TXT 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.