SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
roost-architekt.ch
SSL/TLS Certificate
SSL/TLS Certificate for roost-architekt.ch
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- *.roost-architekt.ch
- Valid from
- Oct 16, 2026
- Valid until
- Jan 14, 2027 (59 days remaining)
- Public key
- EC 384-bit
- Serial
- 06C52E319483412EAC13D9E92A407DB11E62
- SHA-256 fingerprint
- 3C:2D:0D:AE:7C:F7:41:8A:39:DA:88:36:0D:94:57:25:5C:3D:C5:80:B3:DD:8A:AA:20:47:4D:02:81:B6:DE:04
- Chain
- YE1 → Root YE → ISRG Root X2 → ISRG Root X1
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 Sep 10, 2026.
Never get surprised by roost-architekt.ch's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch roost-architekt.ch 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.