IPv4/IPv6 subnet calculator GestióIP
IP address management software


IPv4 IPv6
IP address
Prefix length   

IP address3731:54:65fe:2::a7/64
typeGLOBAL-UNICAST
network3731:54:65fe:2::
Prefix length64
network range
3731:0054:65fe:0002:0000:0000:0000:0000-
3731:0054:65fe:0002:ffff:ffff:ffff:ffff
total IP addresses18446744073709551616

IP address (full)3731:0054:65fe:0002:0000:0000:0000:00a7
integer ID73361969000969283948743196392239923367
hexadecimal ID0x3731005465fe000200000000000000a7
dotted decimal ID55.49.0.84.101.254.0.2.0.0.0.0.0.0.0.167
base 85 IDg7HprBBlw0lJY`gp#IAw
binary ID
00110111001100010000000001010100...
ip6.arpa Format7.a.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.0.0.e.f.5.6.4.5.0.0.1.3.7.3.ip6.arpa
MS ipv6.literal.net3731-54-65fe-2--a7.ipv6-literal.net


subnet-level I

IPv4/IPv6 subnet calculator and hierarchical IPv6 addressing plan builder

This is the online version of GestióIPv3's embedded subnet calculator. GestióIP is a free, web-based IP address management software.

To calculate an IP address select the IP version, introduce an IP address, choose a bitmask/prefix length and click "calculate".

In addition to the standard subnet calculator functions it can also be helpful in configuring IPv6 reverse DNS delegation as well as it can be used as IP address converter. It accepts the following IP address formats as input: dot-decimal notation (IPv4), colon-hexadecimal notation (IPv6), binary, integer, hexadecimal.

The subnet calculator includes an advanced IPv6 addressing plan builder which permits to create organization specific hierarchical IPv6 address allocation schemes. Read more...





For suggestions, comments or bugs relating to the subnet calculator mail to subnet_calculator@gestioip.net


last change: 28/01/2021







Online Subnet Calculator GestióIP Copyright © Marc Uebel 2017