Pricing

$20.00 / 1,000 certificate checkeds

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SSL Certificate Expiry Checker — Live TLS Cert Status

Try for free

Check the live TLS certificate on any host: issuer, subject, valid dates, days until expiry, and whether it's expired or self-signed. For ops and IT teams catching cert expirations before they cause an outage, across as many hosts as they need checked.

Pricing

$20.00 / 1,000 certificate checkeds

Rating

0.0

(0)

Developer

Timothy Kelvin

Actor stats

Bookmarked

Total users

Monthly active users

21 days ago

Last modified

Input

{
  "hosts": ["google.com", "example.com:8443"]
}

Field	Type	Description
`hosts`	array of strings	Hostnames to check, without protocol. Add `:port` for a non-standard port (default `443`). One check is billed per host.

Output

One record per host:

{
  "host": "google.com",
  "port": 443,
  "reachable": true,
  "subjectCN": "*.google.com",
  "issuerCN": "WR2",
  "issuerO": "Google Trust Services",
  "validFrom": "2026-07-21T08:32:00.000Z",
  "validTo": "2026-10-13T08:31:59.000Z",
  "daysUntilExpiration": 61,
  "isExpired": false,
  "isSelfSigned": false,
  "trustedByNode": true,
  "trustError": null,
  "subjectAltNames": ["DNS:*.google.com", "DNS:google.com"],
  "fingerprint256": "AB:CD:...",
  "error": null
}

A host that can't be reached (wrong port, connection refused, DNS failure) returns "reachable": false with an error message instead — still billed once, since a completed check is the result either way.

How it works

Opens a direct TLS connection to each host and reads the certificate the server presents, the same handshake a browser performs. No proxy, no key, no scraping — just the TLS protocol itself.

Pricing note

Billed per host checked, not per field returned — one charge per host whether it's reachable or not.

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