Resolve DNS records for a domain. Supports A, AAAA, MX, TXT, NS, SOA, CNAME, SRV record types.

Perform reverse DNS (PTR) lookup for an IP address. Returns associated hostnames.

Analyze email security posture: SPF, DMARC, DKIM records with risk assessment and recommendations. Checks common DKIM selectors (google, selector1, selector2, k1, etc.).

Recursively resolve SPF include chain. Shows all included domains, IP ranges, detected services (Google Workspace, Microsoft 365, SendGrid, etc.), and RFC 7208 lookup limit compliance.

Discover SRV records and common service CNAMEs for a domain. Probes for SIP, XMPP, Autodiscover, LDAP, Kerberos, CalDAV, CardDAV, and checks CNAMEs for autodiscover, lyncdiscover, OWA, ADFS, etc.

Check if a domain has wildcard DNS configured by resolving a random subdomain.

RDAP/WHOIS lookup for a domain. Returns registrar, registration/expiration dates, nameservers, and contact entities.

RDAP/WHOIS lookup for an IP address. Returns network name, CIDR range, country, and responsible entities.

Search Certificate Transparency logs via crt.sh. Returns unique subdomains and certificate details (issuer, validity, SANs).

Get Shodan host details for an IP: open ports, services, banners, vulns, OS, ASN, geolocation. Requires SHODAN_API_KEY.

Search Shodan for hosts matching a query (e.g. 'apache port:443 country:US'). Requires SHODAN_API_KEY.

Resolve hostnames to IPs using Shodan's DNS resolver. Requires SHODAN_API_KEY.

Search Shodan's exploit database for public exploits matching a query. Requires SHODAN_API_KEY.

VirusTotal domain analysis: reputation score, detection stats, categories, registrar, DNS records. Requires VT_API_KEY.

VirusTotal IP analysis: reputation, detection stats, country, ASN, network. Requires VT_API_KEY.

Enumerate subdomains for a domain via VirusTotal. Requires VT_API_KEY.

Submit a URL to VirusTotal for scanning and get analysis results (malicious/suspicious/harmless). Requires VT_API_KEY.

Enumerate subdomains for a domain via SecurityTrails. Returns FQDNs. Requires ST_API_KEY.

Get historical DNS records for a domain via SecurityTrails. Shows first/last seen dates, values, and organizations. Requires ST_API_KEY.

Enhanced WHOIS lookup via SecurityTrails with registrant/admin/technical contacts. Requires ST_API_KEY.

Search Censys for hosts matching a query. Returns IPs, services, ports, location, ASN. Requires CENSYS_API_ID + CENSYS_API_SECRET.

Get detailed Censys host information for a single IP: all services, certificates, OS, location, ASN. Requires CENSYS_API_ID + CENSYS_API_SECRET.

Search Censys certificate database. Returns certificate fingerprints, subjects, issuers, validity, and SANs. Requires CENSYS_API_ID + CENSYS_API_SECRET.

Geolocate an IP address: country, city, ISP, ASN, proxy/hosting/mobile detection. Uses ip-api.com (free, no API key).

Batch geolocate up to 100 IP addresses at once. Uses ip-api.com (free, no API key).

Look up ASN details and announced IPv4/IPv6 prefixes via BGPView. Returns ASN name, description, contacts, and all announced prefixes.

Look up BGP routing information for an IP address. Returns matching prefixes, ASNs, and RIR allocation.

Look up details for a specific IP prefix/CIDR. Returns announcing ASNs, name, country, and RIR.

Search Wayback Machine for archived URLs of a domain. Returns unique URLs with timestamps, status codes, and MIME types. Useful for finding old endpoints, hidden paths, and removed content.

Get Wayback Machine snapshot history for a specific URL. Returns timestamps, status codes, and direct archive links. Shows first/last seen dates.

Find subdomains and their IPs for a domain via HackerTarget. Free tier: 50 queries/day.

Reverse IP lookup via HackerTarget — find all domains hosted on an IP. Free tier: 50 queries/day.

Look up ASN information for an IP or ASN via HackerTarget. Free tier: 50 queries/day.

Discover Microsoft 365 tenant information for a domain. Returns tenant ID, region, and OpenID configuration endpoints.

Detect authentication type for a domain's Microsoft 365 tenant. Returns namespace type (Managed/Federated), federation brand name, and auth endpoints.

List all OSINT data sources, their availability, API key requirements, and tool counts. Use this to check which sources are configured.

Quick domain reconnaissance combining free sources: DNS (A/MX/NS/TXT), WHOIS, crt.sh subdomains, HackerTarget hosts, and email security analysis. No API keys required.