Subnet mask cheat sheet

Subnet Mask Cheat Sheet

The ultimate reference IPv4 and IPv6 subnet mask cheat sheet.

IPv4 Subnet Mask Cheat Sheet Guide to IPv4 Subnets IPv6 Subnet Mask Cheat Sheet

IPv4 Subnet Mask Cheat Sheet

Download IPv4 & IPv6 Cheat Sheet
PrefixIP AddressesSubnet MaskBits
/321255.255.255.2550
/312255.255.255.2541
/304255.255.255.2522
/298255.255.255.2483
/2816255.255.255.2404
/2732255.255.255.2245
/2664255.255.255.1926
/25128255.255.255.1287
/24256255.255.255.08
/23512255.255.254.09
/221,024255.255.252.010
/212,048255.255.248.011
/204,048255.255.240.012
/198,192255.255.224.013
/1816,384255.255.192.014
/1732,768255.255.128.015
/1665,536255.255.0.016
/15131,072255.254.0.017
/14262,144255.252.0.018
/13524,288255.248.0.019
/121,048,576255.240.0.020
/112,097,152255.224.0.021
/104,194,304255.192.0.022
/98,388,608255.128.0.023
/816,777,216255.0.0.024
/733,554,432254.0.0.025
/667,108,864252.0.0.026
/5134,217,728248.0.0.027
/4268,435,456240.0.0.028
/3536,870,912224.0.0.029
/21,073,741,824192.0.0.030
/12,147,483,648128.0.0.031
/04,294,967,2960.0.0.032

Guide to IPv4 Subnets

/25 – 2 Subnets – 126 Hosts/Subnet

Network #IP RangeBroadcast
.0.1-.126.127
.128.126-.254.255

/26 – 4 Subnets – 62 Hosts/Subnet

Network #IP RangeBroadcast
.0.1-.62.63
.64.65-.126.127
.128.129-.190.191
.192.193-.254.255

/27 – 8 Subnets – 30 Hosts/Subnet

Network #IP RangeBroadcast
.0.1-.30.31
.32.33-.62.63
.64.65-.94.95
.96.97-.126.127
.128.129-.158.159
.160.161-.190.191
.192.193-.222.223
.224.225-.254.255

/28 – 16 Subnets – 14 Hosts/Subnet

Network #IP RangeBroadcast
.0.1-.14.15
.16.17-.30.31
.32.33-.46.47
.48.49-.62.63
.64.65-.78.79
.80.81-.94.95
.96.97-.110.111
.112.113-.126.127
.128.129-.142.143
.144.145-.158.159
.160.161-.174.175
.176.177-.190.191
.192.193-.206.207
.208.209-.222.223
.224.225-.238.239
.240.241-.254.255

/29 – 32 Subnets – 6 Hosts/Subnet

Network #IP RangeBroadcast
.0.1-.6.7
.8.9-.14.15
.16.17-.22.23
.24.25-.30.31
.32.33-.38.39
.40.41-.46.47
.48.49-.54.55
.56.57-.62.63
.64.65-.70.71
.72.73-.78.79
.80.81-.86.87
.88.89-.94.95
.96.97-.102.103
.104.105-.110.111
.112.113-.118.119
.120.121-.126.127
.128.129-.134.135
.136.137-.142.143
.144.145-.150.151
.152.153-.158.159
.160.161-.166.167
.168.169-.174.175
.176.177-.182.183
.184.185-.190.191
.192.193-.198.199
.200.201-.206.207
.208.209-.214.215
.216.217-.222.223
.224.225-.230.231
.232.233-.238.239
.240.241-.246.247
.248.249-.254.255

/30 – 64 Subnets – 2 Hosts/Subnet

Network #IP RangeBroadcast
.0.1-.2.3
.4.5-.6.7
.8.9-.10.11
.12.13-.14.15
.16.17-.18.19
.20.21-.22.23
.24.25-.26.27
.28.29-.30.31
.32.33-.34.35
.36.37-.38.39
.40.41-.42.43
.44.45-.46.47
.48.49-.50.51
.52.53-.54.55
.56.57-.58.59
.60.61-.62.63
.64.65-.66.67
.68.69-.70.71
.72.73-.74.75
.76.77-.78.79
.80.81-.82.83
.84.85-.86.87
.88.89-.90.91
.92.93-.94.95
.96.97-.98.99
.100.101-.102.103
.104.105-.106.107
.108.109-.110.111
.112.113-.114.115
.116.117-.118.119
.120.121-.122.123
.124.125-.126.127
.128.129-.130.131
.132.133-.134.135
.136.137-.138.139
.140.141-.142.143
.144.145-.146.147
.148.149-.150.151
.152.153-.154.155
.156.157-.158.159
.160.161-.162.163
.164.165-.166.167
.168.169-.170.171
.172.173-.174.175
.176.177-.178.179
.180.181-.182.183
.184.185-.186.187
.188.189-.190.191
.192.193-.194.195
.196.197-.198.199
.200.201-.202.203
.204.205-.206.207
.208.209-.210.211
.212.213-.214.215
.216.217-.218.219
.220.221-.222.223
.224.225-.226.227
.228.229-.230.231
.232.233-.234.235
.236.237-.238.239
.240.241-.242.243
.244.245-.246.247
.248.249-.250.251
.252.253-.254.255

IPv6 Subnet Mask Cheat Sheet

Download IPv4 & IPv6 Cheat Sheet
PrefixIP AddressesAmount of a /64
/1281
/1272
/1264
/1258
/12416
/12332
/12264
/121128
/120256
/119512
/1181,024
/1172,048
/1164,096
/1158,192
/11416,384
/11332,768
/11265,536
/111131,072
/110262,144
/109524,288
/1081,048,576
/1072,097,152
/1064,194,304
/1058,388,608
/10416,777,216This is equivalent to an IPv4 Internet or IPv4 /8
/10333,554,432
/10267,108,864
/101134,217,728
/100268,435,456
/99536,870,912
/981,073,741,824
/972,147,483,648
/964,294,967,296
/958,589,934,592
/9417,179,869,184
/9334,359,738,368
/9268,719,476,736
/91137,438,953,472
/90274,877,906,944
/89549,755,813,888
/881,099,511,627,776
/872,199,023,255,5521/8,388,608
/864,398,046,511,1041/4,194,304
/858,796,093,022,2081/2,097,152
/8417,592,186,044,4161/1,048,576
/8335,184,372,088,8321/524,288
/8270,368,744,177,6641/262,144
/81140,737,488,355,3281/131,072
/80281,474,976,710,6561/65,536
/79562,949,953,421,3121/32,768
/781,125,899,906,842,6201/16,384
/772,251,799,813,685,2401/8,192
/764,503,599,627,370,4901/4,096
/759,007,199,254,740,9901/2,048
/7418,014,398,509,481,9001/1,024
/7336,028,797,018,963,9001/512
/7272,057,594,037,927,9001/256
/71144,115,188,075,855,0001/128
/70288,230,376,151,711,0001/64
/69576,460,752,303,423,0001/32
/681,152,921,504,606,840,0001/16
/672,305,843,009,213,690,0001/8
/664,611,686,018,427,380,0001/4
/659,223,372,036,854,770,0001/2
/6418,446,744,073,709,500,000This is the standard end user allocation
/6336,893,488,147,419,100,0002
/6273,786,976,294,838,200,0004
/61147,573,952,589,676,000,0008
/60295,147,905,179,352,000,00016
/59590,295,810,358,705,000,00032
/581,180,591,620,717,410,000,00064
/572,361,183,241,434,820,000,000128
/564,722,366,482,869,640,000,000256
/559,444,732,965,739,290,000,000512
/5418,889,465,931,478,500,000,0001,024
/5337,778,931,862,957,100,000,0002,048
/5275,557,863,725,914,300,000,0004,096
/51151,115,727,451,828,000,000,0008,192
/50302,231,454,903,657,000,000,00016,384
/49604,462,909,807,314,000,000,00032,768
/481,208,925,819,614,620,000,000,00065,536 This is the standard business allocation
/472,417,851,639,229,250,000,000,000131,072
/464,835,703,278,458,510,000,000,000262,144
/459,671,406,556,917,030,000,000,000524,288
/4419,342,813,113,834,000,000,000,0001,048,576
/4338,685,626,227,668,100,000,000,0002,097,152
/4277,371,252,455,336,200,000,000,0004,194,304
/41154,742,504,910,672,000,000,000,0008,388,608
/40309,485,009,821,345,000,000,000,00016,777,216
/39618,970,019,642,690,000,000,000,00033,554,432
/381,237,940,039,285,380,000,000,000,00067,108,864
/372,475,880,078,570,760,000,000,000,000134,217,728
/364,951,760,157,141,520,000,000,000,000268,435,456
/359,903,520,314,283,040,000,000,000,000536,870,912
/3419,807,040,628,566,000,000,000,000,0001,073,741,824
/3339,614,081,257,132,100,000,000,000,0002,147,483,648
/3279,228,162,514,264,300,000,000,000,0004,294,967,296 This is the standard ISP Allocation
/31158,456,325,028,528,000,000,000,000,0008,589,934,592
/30316,912,650,057,057,000,000,000,000,00017,179,869,184
/29633,825,300,114,114,000,000,000,000,00034,359,738,368
/281,267,650,600,228,220,000,000,000,000,00068,719,476,736
/272,535,301,200,456,450,000,000,000,000,000
/265,070,602,400,912,910,000,000,000,000,000
/2510,141,204,801,825,800,000,000,000,000,000
/2420,282,409,603,651,600,000,000,000,000,000
/2340,564,819,207,303,300,000,000,000,000,000
/2281,129,638,414,606,600,000,000,000,000,000
/21162,259,276,829,213,000,000,000,000,000,000
/20324,518,553,658,426,000,000,000,000,000,000
/19649,037,107,316,853,000,000,000,000,000,000
/181,298,074,214,633,700,000,000,000,000,000,000
/172,596,148,429,267,410,000,000,000,000,000,000
/165,192,296,858,534,820,000,000,000,000,000,000
/1510,384,593,717,069,600,000,000,000,000,000,000
/1420,769,187,434,139,300,000,000,000,000,000,000
/1341,538,374,868,278,600,000,000,000,000,000,000
/1283,076,749,736,557,200,000,000,000,000,000,000
/11166,153,499,473,114,000,000,000,000,000,000,000
/10332,306,998,946,228,000,000,000,000,000,000,000
/9664,613,997,892,457,000,000,000,000,000,000,000
/81,329,227,995,784,910,000,000,000,000,000,000,000
IP Address Market

IP Address Market

(Lease & Monetize)

The IPv4 lease marketplace helps monetize unused IP resources and alleviate the IPv4 shortage problem.

Subnet /24 from:

$125.44/mo

Listed IP addresses:

2.3 Million

Learn More