SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
pro-mensch.info
SSL/TLS Certificate
SSL/TLS Certificate for pro-mensch.info
Expired- Issued by (CA)
- Unspecified
- Subject
- php21.selfnet.at
- Valid from
- May 19, 2021
- Valid until
- May 24, 2022 (expired 1630 days ago)
- Public key
- RSA 2048-bit
- Serial
- 2889D78831CEB919
- SHA-256 fingerprint
- 26:DE:C2:E7:74:09:79:B4:0A:C1:29:1E:E7:8A:7A:C1:9B:E8:D0:B6:9D:73:2B:E0:E2:62:6D:2F:79:DD:C9:0E
- Chain
- php21.selfnet.at
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 Oct 3, 2026.
Never get surprised by pro-mensch.info's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch pro-mensch.info 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, 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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.