IP Subnet Calculator

Name: IP Subnet Calculator
Author: Nahlawi Tools

Calculate network address, broadcast, host range, and subnet mask from CIDR notation

ℹ️ About IP Subnet Calculator

Look up geolocation and network information for any IPv4 or IPv6 address. See the approximate city, region, country, timezone, ISP, and ASN (Autonomous System Number) associated with the IP. Automatically detects your own public IP address and provides full details.

❓ Frequently Asked Questions

How accurate is IP geolocation?▸

IP geolocation is approximate. It is typically accurate to the city level (70-90% accuracy) but cannot pinpoint an exact location. VPNs and proxies may show incorrect locations.

What is an ASN?▸

An Autonomous System Number (ASN) identifies a network or group of networks under a single administrative entity (like an ISP or large organization). It is used in BGP routing to direct internet traffic.