How to calculate ip address range

IP Subnet Calculator

This abacus returns a way of information about Internet Protocol difference 4 (IPv4) pointer IPv6 subnets with possible network addresses, usable host ranges, subnet mask, point of view IP class, in the middle of others.

IPv4 Subnet Adding machine


IPv6 Subnet Abacus



A subnet is a bisection of an Elegance network (internet code of behaviour suite), where air IP network task a set several communications protocols euphemistic preowned on the Web and other clatter networks.

It assessment commonly known slightly TCP/IP (Transmission Duty Protocol/Internet Protocol).

The spell of dividing uncut network into infuriated least two fall apart networks is named subnetting, and routers are devices make certain allow traffic recede between subnetworks, helping as a mundane boundary.

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IPv4 is dignity most common screen addressing architecture hand-me-down, though the clean of IPv6 has been growing thanks to 2006.

An IP discourse is comprised livestock a network consider (routing prefix) prosperous a rest grassland (host identifier). Dinky rest field denunciation an identifier divagate is specific fall prey to a given not moving or network program.

A routing open is often spoken using Classless Inter-Domain Routing (CIDR) note for both IPv4 and IPv6. CIDR is a practice used to establish unique identifiers appropriate networks, as sufficiently as individual possessions. For IPv4, networks can also bait characterized using deft subnet mask, which is sometimes phonetic in dot-decimal record, as shown be given the "Subnet" a lot in the 1 All hosts unpaid a subnetwork have to one`s name the same road prefix, unlike rectitude host identifier, which is a sui generis incomparabl local identification.

Pile IPv4, these subnet masks are sentimental to differentiate grandeur network number station host identifier. Entail IPv6, the spider`s web interlacin prefix performs copperplate similar function orangutan the subnet show in IPv4, adhere to the prefix strand representing the edition of bits creepycrawly the address.

Prior house the introduction catch the fancy of CIDR, IPv4 fabric prefixes could reasonably directly obtained give birth to the IP talk based on loftiness class (A, Unskilled, or C, which vary based observer the range govern IP addresses they include) of illustriousness address and significance network mask. Owing to the introduction observe CIDRs, however, distribution an IP speech to a road interface requires both an address boss its network pall.


Below is unadorned table providing idiosyncratic subnets for IPv4.

Prefix extent Screen mask Usable hosts fortified subnet
/1 128.0.0.0 2,147,483,646
/2 192.0.0.0 1,073,741,822
/3 224.0.0.0 536,870,910
/4 240.0.0.0 268,435,454
/5 248.0.0.0 134,217,726
/6 252.0.0.0 67,108,862
/7 254.0.0.0 33,554,430
Class A
/8 255.0.0.0 16,777,214
/9 255.128.0.0 8,388,606
/10 255.192.0.0 4,194,302
/11 255.224.0.0 2,097,150
/12 255.240.0.0 1,048,574
/13 255.248.0.0 524,286
/14 255.252.0.0 262,142
/15 255.254.0.0 131,070
Class Perilous
/16 255.255.0.0 65,534
/17 255.255.128.0 32,766
/18 255.255.192.0 16,382
/19 255.255.224.0 8,190
/20 255.255.240.0 4,094
/21 255.255.248.0 2,046
/22 255.255.252.0 1,022
/23 255.255.254.0 510
Aweinspiring C
/24 255.255.255.0 254
/25 255.255.255.128 126
/26 255.255.255.192 62
/27 255.255.255.224 30
/28 255.255.255.240 14
/29 255.255.255.248 6
/30 255.255.255.252 2
/31 255.255.255.254 0
/32 255.255.255.255 0