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 a-bo.se
Self-signed- Issued by (CA)
- a-bo.se
- Subject
- a-bo.se
- Valid from
- Apr 12, 2022
- Valid until
- Apr 12, 2023 (expired 1263 days ago)
- Public key
- RSA 2048-bit
- Serial
- 02244733A7
- SHA-256 fingerprint
- DB:19:F7:52:86:1D:6E:67:CC:36:33:1F:17:1B:87:E1:20:CB:8E:67:77:2F:10:7A:83:2A:27:9D:EE:FB:E4:BA
- Chain
- a-bo.se
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
This certificate has been served since Sep 23, 2026.
Never get surprised by a-bo.se's certificate expiring
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Uptime
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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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