How does integer (uint32) IP representation work?

Every IPv4 address consists of four 8-bit octets (A.B.C.D). Combining these four octets into a single 32-bit unsigned integer using the formula (A * 256^3) + (B * 256^2) + (C * 256) + D yields the integer representation, commonly used for high-speed database lookups and routing tables.

What are RFC 1918 private address ranges?

RFC 1918 specifies three IPv4 address ranges reserved for private networks that are not routable on the public internet: 10.0.0.0/8 (10.0.0.0 to 10.255.255.255), 172.16.0.0/12 (172.16.0.0 to 172.31.255.255), and 192.168.0.0/16 (192.168.0.0 to 192.168.255.255).

IPv4 Address Representation Converter

Convert IPv4 addresses simultaneously into dotted decimal, 32-bit binary, hexadecimal, uint32 integer, and octal notations. Inspect network scopes (RFC 1918), reverse DNS ARPA pointers, and legacy IP classes. 100% private in-browser.

Dotted Decimal

192.168.1.1

Integer (uint32)

3232235777

Hexadecimal

0xC0A80101

Dotted Hex

C0.A8.01.01

32-Bit Binary

11000000.10101000.00000001.00000001

Octal

0300.0250.0001.0001

Reverse DNS ARPA Record (PTR)

1.1.168.192.in-addr.arpa

IPv4 Networking Architecture

Database Optimization

Storing IPv4 addresses as 4-byte INT UNSIGNED columns reduces disk space by 75% compared to VARCHAR(15) and makes range queries order-of-magnitude faster.

Reverse DNS PTR Records

ARPA pointers reverse octet order to query DNS hierarchy from top-level in-addr.arpa down to individual host PTR records for mail server SPF/DKIM verification.

Subnet Arithmetic

Understanding binary bit boundaries simplifies CIDR routing, variable length subnet masking (VLSM), and access control list (ACL) wildcard configuration.