Tools / Bulk SSL Certificate Expiry Checker & Monitor

Bulk SSL Certificate Expiry Checker & Monitor

Check SSL/TLS certificates for thousands of domains: days to expiry, issuer, SANs, hostname match, trust chain, TLS version and cipher. Input: hosts. Output (JSON/CSV): one row per item with host, port, status, daysRemaining, validTo, issuer, hostnameMatches, authorized, sans, protocol.

Run it on Apify Store →

Example input

{
 "hosts": [
  "apify.com",
  "example.com",
  "expired.badssl.com"
 ]
}

Example output

{
  "host": "apify.com",
  "port": 443,
  "reachable": true,
  "authorized": true,
  "authorizationError": null,
  "hostnameMatches": true,
  "subjectCN": "*.apify.com",
  "issuer": "Amazon",
  "issuerCN": "Amazon RSA 2048 M04",
  "validFrom": "2026-07-03T00:00:00.000Z",
  "validTo": "2027-01-16T23:59:59.000Z",
  "daysRemaining": 96,
  "expired": false,
  "expiringSoon": false,
  "sans": [
    "*.apify.com",
    "apifier.com",
    "*.apifier.com",
    "apify.com"
  ],
  "sanCount": 4,
  "serialNumber": "033947021329345FC779537CD9A338FD",
  "fingerprint256": "8B:70:D5:07:BC:74:55:22:2A:23:E0:08:36:D1:D8:1B:75:F1:0B:99:99:0F:E5:B8:AE:6E:9A:9C:08:F1:F9:8C"
}

Input reference

Field	Type	Notes
`hosts` required	array	Domains or URLs; host:port is accepted.
`port`	integer	Used when a host has no :port.
`warnDays`	integer	Certificates expiring within this many days get status EXPIRING_SOON.
`monitorMode`	boolean	Adds changes/changed fields (fingerprint, issuer, status, expiry). Schedule daily.
`onlyChanged`	boolean	Monitor mode only.
`stateStoreName`	string	Named key-value store for previous results.
`maxConcurrency`	integer	Parallel TLS handshakes.
`timeoutSecs`	integer	Per-host handshake timeout.

Pricing

Pay per result. See the Pricing tab. Plus Apify's small per-run start fee. Apify's free plan includes monthly credit to try it.

How to run

Open the Store page and click Try for free.
Fill in the input (or paste the example JSON in the JSON tab).
Click Start, then export results as CSV, Excel or JSON, or call it via the Apify API.
Optional: add a Schedule and a webhook/Slack/email integration for ongoing monitoring.

Open Bulk SSL Certificate Expiry Checker & Monitor on Apify →