IP address converter

Enter an IPv4 address in any notation — dotted-quad, 32-bit integer, hexadecimal or binary — and get every other representation back.

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Dotted quad8.8.8.8
Decimal (32-bit)134744072
Hexadecimal0x08080808
Binary00001000.00001000.00001000.00001000
Reverse DNS zone8.8.8.8.in-addr.arpa

When integer form matters

Storing addresses as 32-bit integers makes range containment a simple numeric comparison, which is why geolocation and reputation databases ship their tables that way. Attackers also use alternative notations — decimal or hexadecimal URLs — to slip past naive filters, so normalising every inbound address to one canonical form before you compare it is a small change that closes a real gap.