IPv4 Subnet Calculator

Enter an IP with a CIDR prefix or a subnet mask to see its network, broadcast, host range, and host count. You can also split the network into smaller subnets.

Try:192.168.1.10/24 10.0.0.0/8 172.16.5.4/20 203.0.113.9/29

IPv6 calculator →

private IP (RFC 1918)10.2.120.0/22

network10.2.120.0/22

broadcast10.2.123.255

first host10.2.120.1

last host10.2.123.254

subnet mask255.255.252.0

wildcard0.0.3.255

addresses1,024

usable hosts1,022

classA

ipcalc 10.2.120.0/22

address00001010.00000010.01111000.00000000

subnet mask11111111.11111111.11111100.00000000

network00001010.00000010.01111000.00000000

broadcast00001010.00000010.01111011.11111111

green = network part, grey = host part

hex0x0a027800

decimal167933952

reverse dns0.120.2.10.in-addr.arpa

ipv4-mapped::ffff:a02:7800

/22 split into /32 · 1,024 subnets

close ×

#	network	host range	broadcast
1	10.2.120.0/32	10.2.120.0 – 10.2.120.0	10.2.120.0
2	10.2.120.1/32	10.2.120.1 – 10.2.120.1	10.2.120.1
3	10.2.120.2/32	10.2.120.2 – 10.2.120.2	10.2.120.2
4	10.2.120.3/32	10.2.120.3 – 10.2.120.3	10.2.120.3
5	10.2.120.4/32	10.2.120.4 – 10.2.120.4	10.2.120.4
6	10.2.120.5/32	10.2.120.5 – 10.2.120.5	10.2.120.5
7	10.2.120.6/32	10.2.120.6 – 10.2.120.6	10.2.120.6
8	10.2.120.7/32	10.2.120.7 – 10.2.120.7	10.2.120.7
9	10.2.120.8/32	10.2.120.8 – 10.2.120.8	10.2.120.8
10	10.2.120.9/32	10.2.120.9 – 10.2.120.9	10.2.120.9
11	10.2.120.10/32	10.2.120.10 – 10.2.120.10	10.2.120.10
12	10.2.120.11/32	10.2.120.11 – 10.2.120.11	10.2.120.11
13	10.2.120.12/32	10.2.120.12 – 10.2.120.12	10.2.120.12
14	10.2.120.13/32	10.2.120.13 – 10.2.120.13	10.2.120.13
15	10.2.120.14/32	10.2.120.14 – 10.2.120.14	10.2.120.14
16	10.2.120.15/32	10.2.120.15 – 10.2.120.15	10.2.120.15
17	10.2.120.16/32	10.2.120.16 – 10.2.120.16	10.2.120.16
18	10.2.120.17/32	10.2.120.17 – 10.2.120.17	10.2.120.17
19	10.2.120.18/32	10.2.120.18 – 10.2.120.18	10.2.120.18
20	10.2.120.19/32	10.2.120.19 – 10.2.120.19	10.2.120.19
21	10.2.120.20/32	10.2.120.20 – 10.2.120.20	10.2.120.20
22	10.2.120.21/32	10.2.120.21 – 10.2.120.21	10.2.120.21
23	10.2.120.22/32	10.2.120.22 – 10.2.120.22	10.2.120.22
24	10.2.120.23/32	10.2.120.23 – 10.2.120.23	10.2.120.23
25	10.2.120.24/32	10.2.120.24 – 10.2.120.24	10.2.120.24
26	10.2.120.25/32	10.2.120.25 – 10.2.120.25	10.2.120.25
27	10.2.120.26/32	10.2.120.26 – 10.2.120.26	10.2.120.26
28	10.2.120.27/32	10.2.120.27 – 10.2.120.27	10.2.120.27
29	10.2.120.28/32	10.2.120.28 – 10.2.120.28	10.2.120.28
30	10.2.120.29/32	10.2.120.29 – 10.2.120.29	10.2.120.29
31	10.2.120.30/32	10.2.120.30 – 10.2.120.30	10.2.120.30
32	10.2.120.31/32	10.2.120.31 – 10.2.120.31	10.2.120.31
33	10.2.120.32/32	10.2.120.32 – 10.2.120.32	10.2.120.32
34	10.2.120.33/32	10.2.120.33 – 10.2.120.33	10.2.120.33
35	10.2.120.34/32	10.2.120.34 – 10.2.120.34	10.2.120.34
36	10.2.120.35/32	10.2.120.35 – 10.2.120.35	10.2.120.35
37	10.2.120.36/32	10.2.120.36 – 10.2.120.36	10.2.120.36
38	10.2.120.37/32	10.2.120.37 – 10.2.120.37	10.2.120.37
39	10.2.120.38/32	10.2.120.38 – 10.2.120.38	10.2.120.38
40	10.2.120.39/32	10.2.120.39 – 10.2.120.39	10.2.120.39
41	10.2.120.40/32	10.2.120.40 – 10.2.120.40	10.2.120.40
42	10.2.120.41/32	10.2.120.41 – 10.2.120.41	10.2.120.41
43	10.2.120.42/32	10.2.120.42 – 10.2.120.42	10.2.120.42
44	10.2.120.43/32	10.2.120.43 – 10.2.120.43	10.2.120.43
45	10.2.120.44/32	10.2.120.44 – 10.2.120.44	10.2.120.44
46	10.2.120.45/32	10.2.120.45 – 10.2.120.45	10.2.120.45
47	10.2.120.46/32	10.2.120.46 – 10.2.120.46	10.2.120.46
48	10.2.120.47/32	10.2.120.47 – 10.2.120.47	10.2.120.47
49	10.2.120.48/32	10.2.120.48 – 10.2.120.48	10.2.120.48
50	10.2.120.49/32	10.2.120.49 – 10.2.120.49	10.2.120.49
51	10.2.120.50/32	10.2.120.50 – 10.2.120.50	10.2.120.50
52	10.2.120.51/32	10.2.120.51 – 10.2.120.51	10.2.120.51
53	10.2.120.52/32	10.2.120.52 – 10.2.120.52	10.2.120.52
54	10.2.120.53/32	10.2.120.53 – 10.2.120.53	10.2.120.53
55	10.2.120.54/32	10.2.120.54 – 10.2.120.54	10.2.120.54
56	10.2.120.55/32	10.2.120.55 – 10.2.120.55	10.2.120.55
57	10.2.120.56/32	10.2.120.56 – 10.2.120.56	10.2.120.56
58	10.2.120.57/32	10.2.120.57 – 10.2.120.57	10.2.120.57
59	10.2.120.58/32	10.2.120.58 – 10.2.120.58	10.2.120.58
60	10.2.120.59/32	10.2.120.59 – 10.2.120.59	10.2.120.59
61	10.2.120.60/32	10.2.120.60 – 10.2.120.60	10.2.120.60
62	10.2.120.61/32	10.2.120.61 – 10.2.120.61	10.2.120.61
63	10.2.120.62/32	10.2.120.62 – 10.2.120.62	10.2.120.62
64	10.2.120.63/32	10.2.120.63 – 10.2.120.63	10.2.120.63
65	10.2.120.64/32	10.2.120.64 – 10.2.120.64	10.2.120.64
66	10.2.120.65/32	10.2.120.65 – 10.2.120.65	10.2.120.65
67	10.2.120.66/32	10.2.120.66 – 10.2.120.66	10.2.120.66
68	10.2.120.67/32	10.2.120.67 – 10.2.120.67	10.2.120.67
69	10.2.120.68/32	10.2.120.68 – 10.2.120.68	10.2.120.68
70	10.2.120.69/32	10.2.120.69 – 10.2.120.69	10.2.120.69
71	10.2.120.70/32	10.2.120.70 – 10.2.120.70	10.2.120.70
72	10.2.120.71/32	10.2.120.71 – 10.2.120.71	10.2.120.71
73	10.2.120.72/32	10.2.120.72 – 10.2.120.72	10.2.120.72
74	10.2.120.73/32	10.2.120.73 – 10.2.120.73	10.2.120.73
75	10.2.120.74/32	10.2.120.74 – 10.2.120.74	10.2.120.74
76	10.2.120.75/32	10.2.120.75 – 10.2.120.75	10.2.120.75
77	10.2.120.76/32	10.2.120.76 – 10.2.120.76	10.2.120.76
78	10.2.120.77/32	10.2.120.77 – 10.2.120.77	10.2.120.77
79	10.2.120.78/32	10.2.120.78 – 10.2.120.78	10.2.120.78
80	10.2.120.79/32	10.2.120.79 – 10.2.120.79	10.2.120.79
81	10.2.120.80/32	10.2.120.80 – 10.2.120.80	10.2.120.80
82	10.2.120.81/32	10.2.120.81 – 10.2.120.81	10.2.120.81
83	10.2.120.82/32	10.2.120.82 – 10.2.120.82	10.2.120.82
84	10.2.120.83/32	10.2.120.83 – 10.2.120.83	10.2.120.83
85	10.2.120.84/32	10.2.120.84 – 10.2.120.84	10.2.120.84
86	10.2.120.85/32	10.2.120.85 – 10.2.120.85	10.2.120.85
87	10.2.120.86/32	10.2.120.86 – 10.2.120.86	10.2.120.86
88	10.2.120.87/32	10.2.120.87 – 10.2.120.87	10.2.120.87
89	10.2.120.88/32	10.2.120.88 – 10.2.120.88	10.2.120.88
90	10.2.120.89/32	10.2.120.89 – 10.2.120.89	10.2.120.89
91	10.2.120.90/32	10.2.120.90 – 10.2.120.90	10.2.120.90
92	10.2.120.91/32	10.2.120.91 – 10.2.120.91	10.2.120.91
93	10.2.120.92/32	10.2.120.92 – 10.2.120.92	10.2.120.92
94	10.2.120.93/32	10.2.120.93 – 10.2.120.93	10.2.120.93
95	10.2.120.94/32	10.2.120.94 – 10.2.120.94	10.2.120.94
96	10.2.120.95/32	10.2.120.95 – 10.2.120.95	10.2.120.95
97	10.2.120.96/32	10.2.120.96 – 10.2.120.96	10.2.120.96
98	10.2.120.97/32	10.2.120.97 – 10.2.120.97	10.2.120.97
99	10.2.120.98/32	10.2.120.98 – 10.2.120.98	10.2.120.98
100	10.2.120.99/32	10.2.120.99 – 10.2.120.99	10.2.120.99
101	10.2.120.100/32	10.2.120.100 – 10.2.120.100	10.2.120.100
102	10.2.120.101/32	10.2.120.101 – 10.2.120.101	10.2.120.101
103	10.2.120.102/32	10.2.120.102 – 10.2.120.102	10.2.120.102
104	10.2.120.103/32	10.2.120.103 – 10.2.120.103	10.2.120.103
105	10.2.120.104/32	10.2.120.104 – 10.2.120.104	10.2.120.104
106	10.2.120.105/32	10.2.120.105 – 10.2.120.105	10.2.120.105
107	10.2.120.106/32	10.2.120.106 – 10.2.120.106	10.2.120.106
108	10.2.120.107/32	10.2.120.107 – 10.2.120.107	10.2.120.107
109	10.2.120.108/32	10.2.120.108 – 10.2.120.108	10.2.120.108
110	10.2.120.109/32	10.2.120.109 – 10.2.120.109	10.2.120.109
111	10.2.120.110/32	10.2.120.110 – 10.2.120.110	10.2.120.110
112	10.2.120.111/32	10.2.120.111 – 10.2.120.111	10.2.120.111
113	10.2.120.112/32	10.2.120.112 – 10.2.120.112	10.2.120.112
114	10.2.120.113/32	10.2.120.113 – 10.2.120.113	10.2.120.113
115	10.2.120.114/32	10.2.120.114 – 10.2.120.114	10.2.120.114
116	10.2.120.115/32	10.2.120.115 – 10.2.120.115	10.2.120.115
117	10.2.120.116/32	10.2.120.116 – 10.2.120.116	10.2.120.116
118	10.2.120.117/32	10.2.120.117 – 10.2.120.117	10.2.120.117
119	10.2.120.118/32	10.2.120.118 – 10.2.120.118	10.2.120.118
120	10.2.120.119/32	10.2.120.119 – 10.2.120.119	10.2.120.119
121	10.2.120.120/32	10.2.120.120 – 10.2.120.120	10.2.120.120
122	10.2.120.121/32	10.2.120.121 – 10.2.120.121	10.2.120.121
123	10.2.120.122/32	10.2.120.122 – 10.2.120.122	10.2.120.122
124	10.2.120.123/32	10.2.120.123 – 10.2.120.123	10.2.120.123
125	10.2.120.124/32	10.2.120.124 – 10.2.120.124	10.2.120.124
126	10.2.120.125/32	10.2.120.125 – 10.2.120.125	10.2.120.125
127	10.2.120.126/32	10.2.120.126 – 10.2.120.126	10.2.120.126
128	10.2.120.127/32	10.2.120.127 – 10.2.120.127	10.2.120.127
129	10.2.120.128/32	10.2.120.128 – 10.2.120.128	10.2.120.128
130	10.2.120.129/32	10.2.120.129 – 10.2.120.129	10.2.120.129
131	10.2.120.130/32	10.2.120.130 – 10.2.120.130	10.2.120.130
132	10.2.120.131/32	10.2.120.131 – 10.2.120.131	10.2.120.131
133	10.2.120.132/32	10.2.120.132 – 10.2.120.132	10.2.120.132
134	10.2.120.133/32	10.2.120.133 – 10.2.120.133	10.2.120.133
135	10.2.120.134/32	10.2.120.134 – 10.2.120.134	10.2.120.134
136	10.2.120.135/32	10.2.120.135 – 10.2.120.135	10.2.120.135
137	10.2.120.136/32	10.2.120.136 – 10.2.120.136	10.2.120.136
138	10.2.120.137/32	10.2.120.137 – 10.2.120.137	10.2.120.137
139	10.2.120.138/32	10.2.120.138 – 10.2.120.138	10.2.120.138
140	10.2.120.139/32	10.2.120.139 – 10.2.120.139	10.2.120.139
141	10.2.120.140/32	10.2.120.140 – 10.2.120.140	10.2.120.140
142	10.2.120.141/32	10.2.120.141 – 10.2.120.141	10.2.120.141
143	10.2.120.142/32	10.2.120.142 – 10.2.120.142	10.2.120.142
144	10.2.120.143/32	10.2.120.143 – 10.2.120.143	10.2.120.143
145	10.2.120.144/32	10.2.120.144 – 10.2.120.144	10.2.120.144
146	10.2.120.145/32	10.2.120.145 – 10.2.120.145	10.2.120.145
147	10.2.120.146/32	10.2.120.146 – 10.2.120.146	10.2.120.146
148	10.2.120.147/32	10.2.120.147 – 10.2.120.147	10.2.120.147
149	10.2.120.148/32	10.2.120.148 – 10.2.120.148	10.2.120.148
150	10.2.120.149/32	10.2.120.149 – 10.2.120.149	10.2.120.149
151	10.2.120.150/32	10.2.120.150 – 10.2.120.150	10.2.120.150
152	10.2.120.151/32	10.2.120.151 – 10.2.120.151	10.2.120.151
153	10.2.120.152/32	10.2.120.152 – 10.2.120.152	10.2.120.152
154	10.2.120.153/32	10.2.120.153 – 10.2.120.153	10.2.120.153
155	10.2.120.154/32	10.2.120.154 – 10.2.120.154	10.2.120.154
156	10.2.120.155/32	10.2.120.155 – 10.2.120.155	10.2.120.155
157	10.2.120.156/32	10.2.120.156 – 10.2.120.156	10.2.120.156
158	10.2.120.157/32	10.2.120.157 – 10.2.120.157	10.2.120.157
159	10.2.120.158/32	10.2.120.158 – 10.2.120.158	10.2.120.158
160	10.2.120.159/32	10.2.120.159 – 10.2.120.159	10.2.120.159
161	10.2.120.160/32	10.2.120.160 – 10.2.120.160	10.2.120.160
162	10.2.120.161/32	10.2.120.161 – 10.2.120.161	10.2.120.161
163	10.2.120.162/32	10.2.120.162 – 10.2.120.162	10.2.120.162
164	10.2.120.163/32	10.2.120.163 – 10.2.120.163	10.2.120.163
165	10.2.120.164/32	10.2.120.164 – 10.2.120.164	10.2.120.164
166	10.2.120.165/32	10.2.120.165 – 10.2.120.165	10.2.120.165
167	10.2.120.166/32	10.2.120.166 – 10.2.120.166	10.2.120.166
168	10.2.120.167/32	10.2.120.167 – 10.2.120.167	10.2.120.167
169	10.2.120.168/32	10.2.120.168 – 10.2.120.168	10.2.120.168
170	10.2.120.169/32	10.2.120.169 – 10.2.120.169	10.2.120.169
171	10.2.120.170/32	10.2.120.170 – 10.2.120.170	10.2.120.170
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210	10.2.120.209/32	10.2.120.209 – 10.2.120.209	10.2.120.209
211	10.2.120.210/32	10.2.120.210 – 10.2.120.210	10.2.120.210
212	10.2.120.211/32	10.2.120.211 – 10.2.120.211	10.2.120.211
213	10.2.120.212/32	10.2.120.212 – 10.2.120.212	10.2.120.212
214	10.2.120.213/32	10.2.120.213 – 10.2.120.213	10.2.120.213
215	10.2.120.214/32	10.2.120.214 – 10.2.120.214	10.2.120.214
216	10.2.120.215/32	10.2.120.215 – 10.2.120.215	10.2.120.215
217	10.2.120.216/32	10.2.120.216 – 10.2.120.216	10.2.120.216
218	10.2.120.217/32	10.2.120.217 – 10.2.120.217	10.2.120.217
219	10.2.120.218/32	10.2.120.218 – 10.2.120.218	10.2.120.218
220	10.2.120.219/32	10.2.120.219 – 10.2.120.219	10.2.120.219
221	10.2.120.220/32	10.2.120.220 – 10.2.120.220	10.2.120.220
222	10.2.120.221/32	10.2.120.221 – 10.2.120.221	10.2.120.221
223	10.2.120.222/32	10.2.120.222 – 10.2.120.222	10.2.120.222
224	10.2.120.223/32	10.2.120.223 – 10.2.120.223	10.2.120.223
225	10.2.120.224/32	10.2.120.224 – 10.2.120.224	10.2.120.224
226	10.2.120.225/32	10.2.120.225 – 10.2.120.225	10.2.120.225
227	10.2.120.226/32	10.2.120.226 – 10.2.120.226	10.2.120.226
228	10.2.120.227/32	10.2.120.227 – 10.2.120.227	10.2.120.227
229	10.2.120.228/32	10.2.120.228 – 10.2.120.228	10.2.120.228
230	10.2.120.229/32	10.2.120.229 – 10.2.120.229	10.2.120.229
231	10.2.120.230/32	10.2.120.230 – 10.2.120.230	10.2.120.230
232	10.2.120.231/32	10.2.120.231 – 10.2.120.231	10.2.120.231
233	10.2.120.232/32	10.2.120.232 – 10.2.120.232	10.2.120.232
234	10.2.120.233/32	10.2.120.233 – 10.2.120.233	10.2.120.233
235	10.2.120.234/32	10.2.120.234 – 10.2.120.234	10.2.120.234
236	10.2.120.235/32	10.2.120.235 – 10.2.120.235	10.2.120.235
237	10.2.120.236/32	10.2.120.236 – 10.2.120.236	10.2.120.236
238	10.2.120.237/32	10.2.120.237 – 10.2.120.237	10.2.120.237
239	10.2.120.238/32	10.2.120.238 – 10.2.120.238	10.2.120.238
240	10.2.120.239/32	10.2.120.239 – 10.2.120.239	10.2.120.239
241	10.2.120.240/32	10.2.120.240 – 10.2.120.240	10.2.120.240
242	10.2.120.241/32	10.2.120.241 – 10.2.120.241	10.2.120.241
243	10.2.120.242/32	10.2.120.242 – 10.2.120.242	10.2.120.242
244	10.2.120.243/32	10.2.120.243 – 10.2.120.243	10.2.120.243
245	10.2.120.244/32	10.2.120.244 – 10.2.120.244	10.2.120.244
246	10.2.120.245/32	10.2.120.245 – 10.2.120.245	10.2.120.245
247	10.2.120.246/32	10.2.120.246 – 10.2.120.246	10.2.120.246
248	10.2.120.247/32	10.2.120.247 – 10.2.120.247	10.2.120.247
249	10.2.120.248/32	10.2.120.248 – 10.2.120.248	10.2.120.248
250	10.2.120.249/32	10.2.120.249 – 10.2.120.249	10.2.120.249
251	10.2.120.250/32	10.2.120.250 – 10.2.120.250	10.2.120.250
252	10.2.120.251/32	10.2.120.251 – 10.2.120.251	10.2.120.251
253	10.2.120.252/32	10.2.120.252 – 10.2.120.252	10.2.120.252
254	10.2.120.253/32	10.2.120.253 – 10.2.120.253	10.2.120.253
255	10.2.120.254/32	10.2.120.254 – 10.2.120.254	10.2.120.254
256	10.2.120.255/32	10.2.120.255 – 10.2.120.255	10.2.120.255

showing 256 of 1,024

01 / table

IPv4 CIDR prefix table.

Click a prefix longer than your network to split it into subnets.

prefix	subnet mask	addresses	hosts	in your /22
/0	0.0.0.0	4,294,967,296	4,294,967,294	-
/1	128.0.0.0	2,147,483,648	2,147,483,646	-
/2	192.0.0.0	1,073,741,824	1,073,741,822	-
/3	224.0.0.0	536,870,912	536,870,910	-
/4	240.0.0.0	268,435,456	268,435,454	-
/5	248.0.0.0	134,217,728	134,217,726	-
/6	252.0.0.0	67,108,864	67,108,862	-
/7	254.0.0.0	33,554,432	33,554,430	-
/8	255.0.0.0	16,777,216	16,777,214	-
/9	255.128.0.0	8,388,608	8,388,606	-
/10	255.192.0.0	4,194,304	4,194,302	-
/11	255.224.0.0	2,097,152	2,097,150	-
/12	255.240.0.0	1,048,576	1,048,574	-
/13	255.248.0.0	524,288	524,286	-
/14	255.252.0.0	262,144	262,142	-
/15	255.254.0.0	131,072	131,070	-
/16	255.255.0.0	65,536	65,534	-
/17	255.255.128.0	32,768	32,766	-
/18	255.255.192.0	16,384	16,382	-
/19	255.255.224.0	8,192	8,190	-
/20	255.255.240.0	4,096	4,094	-
/21	255.255.248.0	2,048	2,046	-
/22	255.255.252.0	1,024	1,022	1
/23	255.255.254.0	512	510	2 split →
/24	255.255.255.0	256	254	4 split →
/25	255.255.255.128	128	126	8 split →
/26	255.255.255.192	64	62	16 split →
/27	255.255.255.224	32	30	32 split →
/28	255.255.255.240	16	14	64 split →
/29	255.255.255.248	8	6	128 split →
/30	255.255.255.252	4	2	256 split →
/31	255.255.255.254	2	2	512 split →
/32	255.255.255.255	1	1	1,024 split →

02 / faq

About this calculator.

How do I use this subnet calculator?

▼

Type an IP address followed by a prefix, like 192.168.1.10/24, or by a subnet mask, like 192.168.1.10 255.255.255.0. Without a prefix it uses /24. Click a row in the table to split the network into smaller subnets.

Why are usable hosts always 2 fewer?

▼

The first address in a subnet is the network address and the last is the broadcast address, so neither can go to a device. The exceptions are /31 (point-to-point links, RFC 3021) and /32 (a single address), which use every address.

Can I use it from a terminal?

▼

Yes. curl 'ipku.in/en/tools/ipv4-subnet-calculator?q=192.168.1.10/24' returns the result as plain text.

Learn how to work it out →