DNS lookup API: Intelligence & Security Analyzer

Gets the IP addresses & *Reverse DNS from an input url. *Reverse DNS is IP address to domain name mapping - the opposite of forward (normal) DNS which maps domain names to IP addresses.

DNS Lookup - Forward and Reverse (A, MX, TXT, DMARC, PTR)

xyzzy/dns-lookup

Quickly retrieve DNS records (A, AAAA, MX, CNAME, TXT, DMARC, NS, SOA) or perform reverse DNS lookups. Ideal for DNS audits, cybersecurity analysis, competitor intelligence, sales & marketing outreach, tech stack identification, domain monitoring, and DNS troubleshooting.

Website DNS Scraper - Mail provider / tech stack

saswave/website-dns-scraper

From a list of domain names, get infos about tech stack (hubspot, webflow, klaviyo ...) used and mail provider (google, outlook ...) + All the dns records (TXT, A, SOA ..) DNS based

IP WHOIS & Inspector

visita/ip-whois-inspector

A fast, all-in-one tool to perform WHOIS, Reverse DNS, Geolocation, and Port Scanning for a list of IP addresses. It finds the ISP, network owner, hostname, geographic location, and open ports for any public IPv4 or IPv6 address.

Subdomain Discovery Pro

obsequious_ontologist/subdomain-discovery-pro

Advanced subdomain enumeration and security intelligence platform. Discovers hidden subdomains, analyzes SSL/TLS configurations, scans for vulnerabilities, evaluates security headers, and identifies tech stacks. Provides actionable security insights for bug bounty hunting and penetration testing.

Domain Inspector

visita/domain-inspector

A powerful, all-in-one tool to perform DNS lookups, WHOIS queries, HTTP status checks, and SSL certificate validation for a list of domains. It can clean full URLs down to the bare domain (e.g., https://www.apify.com/store → apify.com) and run all checks in a single batch.

Domain Availability, Expiry, WHOIS, DNS, IP, ASN, 70+ TLD

datascoutapi/DomainDaddy

Checks domain availability and expiry dates, retrieves WHOIS & RDAP data, analyzes DNS records (A, MX, NS, TXT), provides IP geolocation and ASN details, calculates domain age, and supports batch processing. Supports 70+ TLDs, handles errors gracefully, and delivers clean, structured JSON output.

IP Address Information Scraper

ryancoffey/ip-address-information-scraper

IP Address Information Scraper

Subdomain Finder & Reverse IP

canadesk/subdomain-finder-reverse-ip

Enumerate Subdomains and Reverse IPs with RapidDNS, Anubis, AlienVault and crt.sh! It's fast and costs little.

VIN decoder API

njoylab/vin-decoder-api

Decode and validate VINs at scale. Extract WMI/manufacturer, country/region, model year, plant, and sequence. ISO 3779 check digit with configurable policy (auto/require/ignore). Accepts an array of VINs, outputs a structured dataset with validity views.