SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
SSL/TLS Certificate for skype.de
Hostname mismatch- Issued by (CA)
- Microsoft Corporation
- Subject
- reroute443.microsoft.com
- Valid from
- Jul 27, 2026
- Valid until
- Nov 4, 2026 (87 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 4300A2B6368F2FF42BE86E0719000000A2B636
- SHA-256 fingerprint
- 90:65:77:93:0F:1F:1A:B5:A6:35:0F:0D:FC:E5:95:25:A3:5A:6C:89:E2:70:3A:B2:93:B4:CC:F3:91:78:8E:D1
- Chain
- Microsoft TLS G2 RSA CA OCSP 04 → Microsoft TLS RSA Root G2 → DigiCert Global Root G2
Certificate Authority Authorization (CAA)
CAA restricts issuance to d-trust.net, digicert.com, microsoft.com; we couldn't map the serving CA (Microsoft Corporation) to one of these identifiers.
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Uptime
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DNS changes
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TLS certificate
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