SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ec2-51-21-227-240.eu-north-1.compute.amazonaws.com
SSL/TLS Certificate
SSL/TLS Certificate for ec2-51-21-227-240.eu-north-1.compute.amazonaws.com
Untrusted chain- Issued by (CA)
- home.pl S.A.
- Subject
- zorstream.pl
- Valid from
- Mar 10, 2026
- Valid until
- Mar 20, 2027 (234 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 089943417B6170A8F9F98DED1B805DA1
- SHA-256 fingerprint
- ED:3A:D0:5D:EE:CC:88:CD:27:75:E1:B4:1E:6A:6B:A4:01:C6:73:5E:76:C8:CC:63:E3:41:A9:1B:27:32:85:56
- Chain
- —
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by ec2-51-21-227-240.eu-north-1.compute.amazonaws.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch ec2-51-21-227-240.eu-north-1.compute.amazonaws.com 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.