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🔒 SSL Certificate Checker — Bulk Expiry Monitor & TLS Config Audit

Bulk-check SSL/TLS certificates for any domain at scale: expiry date, issuer, signature algorithm, key size, full certificate chain, SAN list, TLS-version + cipher-suite support, OCSP / CRL status, and HSTS / HTTP→HTTPS redirect detection. A pay-per-result alternative to Qualys SSL Labs (rate-limited), DigiCert CertCentral, SSLMate Cert Spotter, and Detectify — designed for security ops monitoring thousands of domains, MSPs running cert-expiry SLAs for clients, and dev teams hunting weak TLS configs in their attack surface.

Why SSL Certificate Checker Beats Qualys SSL Labs, DigiCert, SSLMate & Detectify

Most security teams pick this actor instead of Qualys SSL Labs because Qualys throttles bulk runs to a trickle — this actor is a drop-in alternative that handles 10,000 domains per run, cheaper than SSLMate Cert Spotter for monitoring-only use cases, and a viable replacement for DigiCert's expiry-check feature when you don't already have a DigiCert contract.

What You Get Per Domain

Each dataset item is a flat record:

• domain, resolved_host, port
• valid — boolean (cert presents + chain validates)
• expires_at, days_until_expiry
• issued_at
• issuer — {name, common_name, organization}
• subject — {common_name, organization, country}
• san[] — Subject Alternative Names
• chain[] — full intermediate + root chain
• signature_algorithm, key_algorithm, key_size
• fingerprint_sha1, fingerprint_sha256
• tls_versions_supported[] — TLS 1.0 / 1.1 / 1.2 / 1.3
• cipher_suites[] — full negotiated cipher list
• ocsp_status, crl_status
• hsts — {enabled, max_age, include_subdomains, preload}
• redirects_to_https — boolean
• is_self_signed, is_wildcard, is_lets_encrypt

Use Cases

• Security ops teams — monitor 5k+ corporate + acquired domains for cert expiry with weekly cron
• MSPs — run a daily cert-expiry sweep across every client's domain portfolio and Slack-alert on <14 days
• Penetration testers — find weak-cipher TLS endpoints in a target's external attack surface
• Compliance auditors — produce evidence reports for SOC 2 / ISO 27001 control AC-17 (TLS in transit)
• DevOps teams — flag misissued or non-Let's-Encrypt certs in environments that should be using LE
• CDN / hosting migration — verify post-migration cert deployment across hundreds of subdomains

Quick Start

from apify_client import ApifyClient
client = ApifyClient("YOUR_APIFY_TOKEN")
run = client.actor("nexgendata/ssl-certificate-checker").call(run_input={
"domains":["example.com","google.com","github.com"],
"checkTLSConfig":True,
"checkHSTS":True
})
for item in client.dataset(run["defaultDatasetId"]).iterate_items():
print(item["domain"], item["days_until_expiry"], item["issuer"]["name"])

Pricing

Pay-per-event:

• Actor Start: small fixed charge per run (memory-scaled)
• Per domain: $0.5 per 1,000 domains checked

No subscription, no minimum.

Related NexGenData Actors

FAQ

Does it check certs on non-443 ports? Yes — pass port: 8443 (or any) per domain.

Do you support SNI? Yes — Server Name Indication is sent on every connection.

Can I check internal / non-public hostnames? No — the actor connects from Apify cloud egress, so the host must be publicly reachable.

Output formats? JSON, CSV, Excel, and the Apify dataset API.

Is this legal? Yes. Reading a publicly served TLS handshake is the explicit purpose of TLS — there is no auth bypass involved.

About NexGenData

NexGenData publishes 260+ buyer-intent actors covering SEC filings, YC alumni, lead generation, competitive intelligence, stock fundamentals across 30+ exchanges, and more. All pay-per-result. Browse the full catalog at https://apify.com/nexgendata?fpr=2ayu9b

How NexGenData Pricing Works

Every NexGenData actor uses pay-per-event pricing — you only pay for results that actually land in your dataset. No monthly minimum, no seat fees, no surprise overage bills.

• Actor Start: a single-event charge each time you spin the actor up (scaled to memory size)
• Result / item: charged per item written to the default dataset
• No charge for retries, internal proxy rotation, or failed sub-requests — those are absorbed by the platform

Apify Platform Bonus

New to Apify? Sign up with the NexGenData referral link — you get free platform credits on signup (enough for several thousand free results) and you help fund the maintenance of this actor fleet.

Integration Surface

Every actor in the NexGenData catalog can be triggered from:

• Apify console — point-and-click run
• Apify API — REST + webhooks
• Apify Python / JS SDKs — programmatic batch
• Zapier, Make.com, n8n — official integrations
• MCP — many actors are exposed as MCP tools for Claude / ChatGPT / Cursor agents
• Schedules — built-in cron for daily / weekly / monthly runs
• Webhooks — POST results to any HTTPS endpoint on dataset write

Support

NexGenData maintains 260+ Apify actors and ships updates regularly. Bug reports via the Apify console issues tab get a response within 24 hours. Roadmap requests are welcome — high-demand features ship in the next version.

Home: thenextgennexus.com Full catalog: apify.com/nexgendata