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Certificate Transparency Monitor — New Certs by Domain

Under maintenance

Try for free

Search Certificate Transparency logs for newly issued SSL/TLS certificates on a domain and its subdomains. Spot unauthorized certs or newly launched subdomains — official CT log data, no proxy, no scanning.

Pricing

Pay per usage

Rating

0.0

(0)

Developer

Timothy Kelvin

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Bookmarked

Total users

Monthly active users

11 days ago

Last modified

Certificate Transparency Monitor — New Certs by Domain API through CLI

The Apify CLI is the official tool that allows you to use Certificate Transparency Monitor — New Certs by Domain locally, providing convenience functions and automatic retries on errors.

Install Apify CLI

Using installation script (macOS/Linux):

$curl -fsSL https://apify.com/install-cli.sh | bash

Using installation script (Windows):

$irm https://apify.com/install-cli.ps1 | iex

Using Homebrew:

$brew install apify-cli

Using npm:

$npm install -g apify-cli

Other API clients include:

Certificate Transparency Monitor — New Certs by Domain API in Python

Certificate Transparency Monitor — New Certs by Domain API in JavaScript

Certificate Transparency Monitor — New Certs by Domain OpenAPI definition

Certificate Transparency Monitor — New Certs by Domain API

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Certificate Transparency Scraper: Subdomain Discovery

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Certificate Transparency Log Firehose

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Streams newly-issued certificates from public CT logs (Google, Cloudflare, DigiCert, Sectigo, TrustAsia) with a keyword/pattern watch-list match — delta-since-last-run, not a one-domain lookup.

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🔍 Subdomain Finder & CT Log Scraper

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Map website architectures by extracting subdomains from public Certificate Transparency logs to find unlinked staging sites.

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SSL Certificate Monitor — Bulk Expiry & Chain Checker

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Monitor SSL/TLS certificates in bulk. Expiry dates, issuer, protocol version, key size, certificate chain, SAN list. Webhook alerts for expiring certs. 5 domains free.

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Subdomain Finder — Certificate Transparency (crt.sh)

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Discover subdomains of any domain from public Certificate Transparency logs (crt.sh). Attack-surface mapping and recon with first/last-seen dates. No key, no proxy.

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SSL Certificate & Subdomain Finder for Any Website

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Find all the subdomains of any website and check its SSL certificates. Paste a domain and get every subdomain seen in public certificate records, plus the certificate issuer, valid dates and days until expiry. Great for security checks and finding forgotten sites. No API key needed.