IP Address Lookup

Analyze, validate, and convert IP addresses. Detect IPv4/IPv6, check public vs private, convert to binary and decimal.

Your Public IP Address

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IP Address Lookup

About IP Addresses

IPv4 vs IPv6

IPv4 addresses use 32 bits (e.g., 192.168.1.1), while IPv6 uses 128 bits (e.g., 2001:db8::1). IPv6 was created to address the exhaustion of IPv4 addresses.

Public vs Private IPs

Private IP ranges (10.x.x.x, 172.16-31.x.x, 192.168.x.x) are used within local networks. Public IPs are globally unique and routable on the internet.

IP Classes (IPv4)

Class A (1-126): Large networks. Class B (128-191): Medium networks. Class C (192-223): Small networks. Class D (224-239): Multicast. Class E (240-255): Reserved.

Reverse DNS Lookup

Reverse DNS (PTR record) maps an IP address back to a hostname. This is commonly used for email server verification and security auditing.