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 1-psy.fr
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- *.1-psy.fr
- Valid from
- Oct 13, 2025
- Valid until
- Oct 27, 2026 (48 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 3E53DF3569662D7EA409105C52D69CCE
- SHA-256 fingerprint
- 3F:6C:27:D6:7D:70:C0:84:A1:0E:B7:ED:AE:E1:1A:E2:02:33:17:F1:6D:63:1C:40:4F:3B:4E:60:6D:45:12:37
- Chain
- Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by 1-psy.fr's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch 1-psy.fr 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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