SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
2-second.com
SSL/TLS Certificate
SSL/TLS Certificate for 2-second.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- 2-second.com
- Valid from
- May 18, 2026
- Valid until
- Aug 16, 2026 (24 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0517C5A48AE0FF084AD3AB7BC5300520BEB0
- SHA-256 fingerprint
- EC:41:DF:70:9A:36:C6:C0:B9:E8:A7:90:85:90:9A:DB:34:F6:21:0B:02:9A:4B:C2:55:A7:F0:AB:02:1E:DD:06
- Chain
- R12 → 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 2-second.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch 2-second.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.