SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
premium-rootserver.net
SSL/TLS Certificate
SSL/TLS Certificate for premium-rootserver.net
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- premium-rootserver.net
- Valid from
- Jun 12, 2026
- Valid until
- Sep 10, 2026 (49 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 06435085F2B01E0615219C6DC03692DD18FB
- SHA-256 fingerprint
- 47:28:5D:FC:55:65:61:87:96:C7:DF:45:A7:F5:DA:37:30:73:DA:5D:1B:AB:91:8F:8A:0E:BE:96:BB:B3:CF:96
- Chain
- YR2 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by premium-rootserver.net's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch premium-rootserver.net 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.