SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
pi-asp.de
SSL/TLS Certificate
SSL/TLS Certificate for pi-asp.de
Valid- Issued by (CA)
- Deutsche Telekom Security GmbH
- Subject
- *.pi-asp.de
- Valid from
- Jan 27, 2026
- Valid until
- Jan 31, 2027 (117 days remaining)
- Public key
- EC 384-bit
- Serial
- 28464F590BED46E0FAC48F98D5B2692F
- SHA-256 fingerprint
- 87:71:72:7D:22:D3:09:12:48:A2:32:E7:7D:41:7C:38:32:9B:CB:26:55:3C:E6:1B:2A:5B:BD:B9:FA:36:1A:C3
- Chain
- Telekom Security ServerID OV Class 2 CA → T-TeleSec GlobalRoot Class 2
Certificate Authority Authorization (CAA)
CAA restricts issuance to telesec.de; we couldn't map the serving CA (Deutsche Telekom Security GmbH) to one of these identifiers.
This certificate has been served since Jul 23, 2026.
Never get surprised by pi-asp.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch pi-asp.de 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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