SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
rnicrosoft-app-auth.com
SSL/TLS Certificate
SSL/TLS Certificate for rnicrosoft-app-auth.com
Valid- Issued by (CA)
- Amazon
- Subject
- rnicrosoft-app-auth.com
- Valid from
- Sep 23, 2026
- Valid until
- Apr 8, 2027 (189 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0B2B22B253629818A3352676680680B8
- SHA-256 fingerprint
- DB:EE:70:0A:D4:57:3D:4F:5A:0C:95:B5:BC:F1:79:82:91:B9:44:A4:08:EA:2B:44:07:77:E8:12:23:FC:2F:88
- 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.
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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.
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