SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
longbrook-db.com
SSL/TLS Certificate
SSL/TLS Certificate for longbrook-db.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- autoconfig.longbrook-db.com
- Valid from
- Sep 5, 2026
- Valid until
- Dec 4, 2026 (51 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05B9930B3146E572C00AE58459A5E7D2A9FC
- SHA-256 fingerprint
- D4:58:DF:83:4C:2E:59:72:05:62:DA:55:47:26:DE:82:CA:FC:00:FF:A7:87:A6:28:2C:43:22:AE:88:D6:08:7C
- Chain
- YR2 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
We've observed 1 previous certificate for this host. This certificate has been served since Oct 7, 2026.
Never get surprised by longbrook-db.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch longbrook-db.com 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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.