SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
otto-dev.link
SSL/TLS Certificate
SSL/TLS Certificate for otto-dev.link
Valid- Issued by (CA)
- Amazon
- Subject
- otto-dev.link
- Valid from
- Nov 4, 2026
- Valid until
- May 20, 2027 (192 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 06F4C0E58F10DD5D57123215D2AD8391
- SHA-256 fingerprint
- B1:2F:7D:9A:29:F7:1F:18:E0:17:27:EB:AF:D9:B4:C2:92:24:EE:BC:D5:E7:4F:79:E3:45:CD:13:04:8F:64:21
- Chain
- Amazon RSA 2048 M04 → Amazon Root CA 1 → Starfield Services Root Certificate Authority - G2
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by otto-dev.link's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch otto-dev.link 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, CNAME, TXT 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.