SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
smart-nj.org
SSL/TLS Certificate
SSL/TLS Certificate for smart-nj.org
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- smart-nj.org
- Valid from
- Oct 25, 2026
- Valid until
- Jan 23, 2027 (72 days remaining)
- Public key
- EC 384-bit
- Serial
- 05E1161355A0201E7B622C6910FBB643B308
- SHA-256 fingerprint
- 08:3C:D1:EB:07:0B:CB:E1:7F:29:D5:EE:0B:CA:44:A6:27:60:61:4A:87:D8:4C:FB:8D:21:88:07:15:4D:AE:56
- Chain
- YE1 → Root YE → ISRG Root X2 → 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 Nov 8, 2026.
Never get surprised by smart-nj.org's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch smart-nj.org 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, CNAME, TXT 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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