SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
nerdylizard.com
SSL/TLS Certificate
SSL/TLS Certificate for nerdylizard.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- nerdylizard.com
- Valid from
- Jul 24, 2026
- Valid until
- Oct 22, 2026 (42 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05386E8F7EF0B3E8DB6E8E8CF831BA9968B2
- SHA-256 fingerprint
- B4:72:32:24:A0:AA:B4:53:37:88:F0:46:58:C7:E7:47:6B:35:98:A4:D5:64:64:26:86:1A:97:C5:82:EE:F2:86
- 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.
This certificate has been served since Aug 26, 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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