SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
atp-berlin.de
SSL/TLS Certificate
SSL/TLS Certificate for atp-berlin.de
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- *.atp-berlin.de
- Valid from
- May 23, 2026
- Valid until
- Dec 3, 2026 (118 days remaining)
- Public key
- RSA 2048-bit
- Serial
- DD93C931A02646061AC73EC5BC1E1038
- SHA-256 fingerprint
- 5D:77:96:54:60:D0:64:AA:65:96:A3:C6:FF:CE:F1:F9:C4:DD:BC:E4:94:F1:DE:EB:2F:62:DA:9C:B0:24:B9:49
- 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 atp-berlin.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch atp-berlin.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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.