SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
assv-gt.schule
SSL/TLS Certificate
SSL/TLS Certificate for assv-gt.schule
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- assv-gt.schule
- Valid from
- Jul 22, 2026
- Valid until
- Oct 20, 2026 (35 days remaining)
- Public key
- EC 256-bit
- Serial
- 057EC8376229F4DD69DC9FFE948A78ABC6CE
- SHA-256 fingerprint
- 17:AF:B6:D7:B7:10:AF:47:6E:D2:0D:DC:9A:46:A3:25:E6:84:A7:DD:05:3C:9E:7D:14:09:AA:AB:0F:0A:D0:1C
- Chain
- YE1 → Root YE → ISRG Root X2 → ISRG Root X1
Certificate Authority Authorization (CAA)
The serving CA (Let's Encrypt) is authorized by this domain's CAA records (letsencrypt.org).
Never get surprised by assv-gt.schule's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch assv-gt.schule 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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