SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
act-line.net
SSL/TLS Certificate
SSL/TLS Certificate for act-line.net
Self-signed- Issued by (CA)
- act-line.net
- Subject
- act-line.net
- Valid from
- Jan 16, 2020
- Valid until
- Jan 15, 2021 (expired 2060 days ago)
- Public key
- RSA 2048-bit
- Serial
- 0115B54A3F
- SHA-256 fingerprint
- F5:F4:3B:B6:B9:90:11:5C:E4:CD:38:B6:C6:B2:AE:55:21:51:51:B3:86:27:D9:FA:E2:29:9D:AE:19:A2:52:9A
- Chain
- act-line.net
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 Jul 27, 2026.
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This is today's certificate. Turn on monitoring and we'll watch act-line.net 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.
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