SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
digi-key.io
SSL/TLS Certificate
SSL/TLS Certificate for digi-key.io
Hostname mismatch- Issued by (CA)
- Sectigo Limited
- Subject
- www.digikey.com
- Valid from
- Sep 23, 2026
- Valid until
- Apr 9, 2027 (175 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 906AF9AD78422128DAB0B3C13D7744C4
- SHA-256 fingerprint
- CA:F0:40:39:1F:3F:A5:E3:BA:60:65:B3:41:AF:0C:0E:B7:63:CB:5C:D0:98:DC:F0:1A:E8:70:78:04:F9:91:46
- Chain
- Sectigo Public Server Authentication CA EV 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.
We've observed 2 previous certificates for this host. This certificate has been served since Oct 7, 2026.
Never get surprised by digi-key.io's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch digi-key.io 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.