ARIN Whois / RDAP
WorkingFree
Official registry record of who holds an IP block in North America.
IP Addresses & Networks
9 OSINT tools and guides. Use them lawfully and ethically.
IP lookup (4)
bgp.he.net
WorkingFree
Hurricane Electric BGP toolkit: ASNs, prefixes and peering.
IPinfo
WorkingPaid
IP geolocation, ASN and company data.
RIPE Database
WorkingFree
Official registry for European/Middle East IP space.
Exposure & reputation (5)
Criminal IP
WorkingPaidLogin required
Search engine for internet-exposed hosts with IP risk scoring.
GreyNoise Visualizer
WorkingPaid
Shows whether an IP is a mass internet scanner or benign service.
Shodan
WorkingPaidLogin required
Search engine for internet-connected devices and open services.
AbuseIPDB
May be blockedPaid
Community reports of abusive IP addresses.
Censys Search
May be blockedPaidLogin required
Search of hosts and certificates seen in internet-wide scans.