SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
msft-upgrade.com
SSL/TLS Certificate
SSL/TLS Certificate for msft-upgrade.com
Valid- Issued by (CA)
- Amazon
- Subject
- msft-upgrade.com
- Valid from
- Jul 18, 2026
- Valid until
- Jan 31, 2027 (136 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 06F13C0CE2899D29AD0F10FA5D4E7BF1
- SHA-256 fingerprint
- E6:EA:12:91:05:6C:B2:20:05:B1:62:B8:CE:67:7D:53:73:BB:EA:02:43:BA:E2:E4:07:76:90:78:13:E4:D7:DE
- Chain
- Amazon RSA 2048 M01 → 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 msft-upgrade.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch msft-upgrade.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.