SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
square-r00t.net
SSL/TLS Certificate
SSL/TLS Certificate for square-r00t.net
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- square-r00t.net
- Valid from
- Aug 10, 2026
- Valid until
- Nov 8, 2026 (66 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 06920BC8B2F8E6260AEA1B82B1438722D09C
- SHA-256 fingerprint
- 69:01:9B:24:65:7D:10:0A:30:15:E4:D6:90:9F:70:22:CF:64:CC:FE:41:03:37:E9:D5:02:9C:9A:B0:86:57:C0
- Chain
- YR1 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
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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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