IP Whois

Every IP address belongs to a registered network block, and Whois records reveal who owns it — the ISP or hosting provider, the allocated IP range (CIDR), the regional registry (ARIN, RIPE, APNIC, etc.), and often an approximate geographic location. This is useful for tracing suspicious traffic in your server logs, identifying whether a visitor is coming from a data center or residential connection, or researching abuse reports before deciding how to respond.

Identify Network Ownership, CIDR Blocks, and Abuse Contacts

Every public IP address is allocated within a registered network block managed by Regional Internet Registries (RIRs) like ARIN, RIPE, APNIC, LACNIC, or AFRINIC. An IP WHOIS lookup identifies the organization, hosting provider, or Internet Service Provider (ISP) that controls a given IPv4 or IPv6 address.

The IP Whois tool queries global registry databases in real time, exposing network ranges, Autonomous System Numbers (ASN), abuse reporting channels, and routing metadata.

Key Features

  • Network Block & CIDR Analysis: View the precise IP allocation range (e.g., 192.0.2.0/24) and assigned subnet boundaries.
  • ISP & Organization Lookup: Instantly identify whether an IP belongs to a residential provider, cloud host (AWS, DigitalOcean, Hetzner), or corporate network.
  • ASN & Routing Metadata: Extract Autonomous System Numbers (e.g., AS13335) and routing entity details to map network transit paths.
  • Abuse Contact Details: Locate designated email addresses and abuse handles to report automated attacks, spam, or malicious traffic.
  • Regional Registry Tracking: Determine which RIR maintains authority over the IP allocation block.

Common Use Cases

  • Server Log & Threat Analysis: Investigate suspicious connection attempts, DDoS vectors, or brute-force logins by tracing attacker IPs back to their source network.
  • Traffic Classification: Distinguish legitimate residential visitors from automated data center bots, VPNs, or cloud crawlers.
  • Security & Abuse Reporting: Collect official network owner details and contact handles to submit formal network abuse complaints.

Enter an IPv4 or IPv6 address above to run a global IP WHOIS query immediately.