SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
a1flags.ca
SSL/TLS Certificate
SSL/TLS Certificate for a1flags.ca
Valid- Issued by (CA)
- Google Trust Services
- Subject
- a1flags.ca
- Valid from
- Sep 26, 2026
- Valid until
- Dec 25, 2026 (79 days remaining)
- Public key
- EC 256-bit
- Serial
- BD0EFBF6C0D9C6150E0C6E1A86A7EF33
- SHA-256 fingerprint
- FF:2D:34:11:2C:4C:22:90:A2:43:2D:7D:B0:85:92:C0:C1:0E:61:A2:02:17:40:CB:89:D5:48:52:DD:98:15:56
- Chain
- WE1 → GTS Root R4
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 30, 2026.
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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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