IPv4/IPv6 subnet calculator GestióIP
IP address management software


IPv4 IPv6
IP address
Prefix length   

IP address2001:11::3f4b:1aff:f7b2/28
typeGLOBAL-UNICAST (Deprecated (formerly ORCHID (2001:10::/28)) [rfc4843][IANA])
network2001:10::
Prefix length28
network range
2001:0010:0000:0000:0000:0000:0000:0000-
2001:001f:ffff:ffff:ffff:ffff:ffff:ffff
total IP addresses1267650600228229401496703205376

IP address (full)2001:0011:0000:0000:0000:3f4b:1aff:f7b2
integer ID42540489508854605503044165107355482034
hexadecimal ID0x200100110000000000003f4b1afff7b2
dotted decimal ID32.1.0.17.0.0.0.0.0.0.63.75.26.255.247.178
base 85 ID9r}k3Ant_8&X>kVzXX_I
binary ID
00100000000000010000000000010001...
ip6.arpa Format2.b.7.f.f.f.a.1.b.4.f.3.0.0.0.0.0.0.0.0.0.0.0.0.1.1.0.0.1.0.0.2.ip6.arpa
MS ipv6.literal.net2001-11--3f4b-1aff-f7b2.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