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)10.2.220.0/22

network10.2.220.0/22

broadcast10.2.223.255

first host10.2.220.1

last host10.2.223.254

subnet mask255.255.252.0

wildcard0.0.3.255

addresses1,024

usable hosts1,022

classA

ipcalc 10.2.220.0/22

address00001010.00000010.11011100.00000000

subnet mask11111111.11111111.11111100.00000000

network00001010.00000010.11011100.00000000

broadcast00001010.00000010.11011111.11111111

green = network part, grey = host part

hex0x0a02dc00

decimal167959552

reverse dns0.220.2.10.in-addr.arpa

ipv4-mapped::ffff:a02:dc00

/22 split into /32 · 1,024 subnets

close ×

#	network	host range	broadcast
1	10.2.220.0/32	10.2.220.0 – 10.2.220.0	10.2.220.0
2	10.2.220.1/32	10.2.220.1 – 10.2.220.1	10.2.220.1
3	10.2.220.2/32	10.2.220.2 – 10.2.220.2	10.2.220.2
4	10.2.220.3/32	10.2.220.3 – 10.2.220.3	10.2.220.3
5	10.2.220.4/32	10.2.220.4 – 10.2.220.4	10.2.220.4
6	10.2.220.5/32	10.2.220.5 – 10.2.220.5	10.2.220.5
7	10.2.220.6/32	10.2.220.6 – 10.2.220.6	10.2.220.6
8	10.2.220.7/32	10.2.220.7 – 10.2.220.7	10.2.220.7
9	10.2.220.8/32	10.2.220.8 – 10.2.220.8	10.2.220.8
10	10.2.220.9/32	10.2.220.9 – 10.2.220.9	10.2.220.9
11	10.2.220.10/32	10.2.220.10 – 10.2.220.10	10.2.220.10
12	10.2.220.11/32	10.2.220.11 – 10.2.220.11	10.2.220.11
13	10.2.220.12/32	10.2.220.12 – 10.2.220.12	10.2.220.12
14	10.2.220.13/32	10.2.220.13 – 10.2.220.13	10.2.220.13
15	10.2.220.14/32	10.2.220.14 – 10.2.220.14	10.2.220.14
16	10.2.220.15/32	10.2.220.15 – 10.2.220.15	10.2.220.15
17	10.2.220.16/32	10.2.220.16 – 10.2.220.16	10.2.220.16
18	10.2.220.17/32	10.2.220.17 – 10.2.220.17	10.2.220.17
19	10.2.220.18/32	10.2.220.18 – 10.2.220.18	10.2.220.18
20	10.2.220.19/32	10.2.220.19 – 10.2.220.19	10.2.220.19
21	10.2.220.20/32	10.2.220.20 – 10.2.220.20	10.2.220.20
22	10.2.220.21/32	10.2.220.21 – 10.2.220.21	10.2.220.21
23	10.2.220.22/32	10.2.220.22 – 10.2.220.22	10.2.220.22
24	10.2.220.23/32	10.2.220.23 – 10.2.220.23	10.2.220.23
25	10.2.220.24/32	10.2.220.24 – 10.2.220.24	10.2.220.24
26	10.2.220.25/32	10.2.220.25 – 10.2.220.25	10.2.220.25
27	10.2.220.26/32	10.2.220.26 – 10.2.220.26	10.2.220.26
28	10.2.220.27/32	10.2.220.27 – 10.2.220.27	10.2.220.27
29	10.2.220.28/32	10.2.220.28 – 10.2.220.28	10.2.220.28
30	10.2.220.29/32	10.2.220.29 – 10.2.220.29	10.2.220.29
31	10.2.220.30/32	10.2.220.30 – 10.2.220.30	10.2.220.30
32	10.2.220.31/32	10.2.220.31 – 10.2.220.31	10.2.220.31
33	10.2.220.32/32	10.2.220.32 – 10.2.220.32	10.2.220.32
34	10.2.220.33/32	10.2.220.33 – 10.2.220.33	10.2.220.33
35	10.2.220.34/32	10.2.220.34 – 10.2.220.34	10.2.220.34
36	10.2.220.35/32	10.2.220.35 – 10.2.220.35	10.2.220.35
37	10.2.220.36/32	10.2.220.36 – 10.2.220.36	10.2.220.36
38	10.2.220.37/32	10.2.220.37 – 10.2.220.37	10.2.220.37
39	10.2.220.38/32	10.2.220.38 – 10.2.220.38	10.2.220.38
40	10.2.220.39/32	10.2.220.39 – 10.2.220.39	10.2.220.39
41	10.2.220.40/32	10.2.220.40 – 10.2.220.40	10.2.220.40
42	10.2.220.41/32	10.2.220.41 – 10.2.220.41	10.2.220.41
43	10.2.220.42/32	10.2.220.42 – 10.2.220.42	10.2.220.42
44	10.2.220.43/32	10.2.220.43 – 10.2.220.43	10.2.220.43
45	10.2.220.44/32	10.2.220.44 – 10.2.220.44	10.2.220.44
46	10.2.220.45/32	10.2.220.45 – 10.2.220.45	10.2.220.45
47	10.2.220.46/32	10.2.220.46 – 10.2.220.46	10.2.220.46
48	10.2.220.47/32	10.2.220.47 – 10.2.220.47	10.2.220.47
49	10.2.220.48/32	10.2.220.48 – 10.2.220.48	10.2.220.48
50	10.2.220.49/32	10.2.220.49 – 10.2.220.49	10.2.220.49
51	10.2.220.50/32	10.2.220.50 – 10.2.220.50	10.2.220.50
52	10.2.220.51/32	10.2.220.51 – 10.2.220.51	10.2.220.51
53	10.2.220.52/32	10.2.220.52 – 10.2.220.52	10.2.220.52
54	10.2.220.53/32	10.2.220.53 – 10.2.220.53	10.2.220.53
55	10.2.220.54/32	10.2.220.54 – 10.2.220.54	10.2.220.54
56	10.2.220.55/32	10.2.220.55 – 10.2.220.55	10.2.220.55
57	10.2.220.56/32	10.2.220.56 – 10.2.220.56	10.2.220.56
58	10.2.220.57/32	10.2.220.57 – 10.2.220.57	10.2.220.57
59	10.2.220.58/32	10.2.220.58 – 10.2.220.58	10.2.220.58
60	10.2.220.59/32	10.2.220.59 – 10.2.220.59	10.2.220.59
61	10.2.220.60/32	10.2.220.60 – 10.2.220.60	10.2.220.60
62	10.2.220.61/32	10.2.220.61 – 10.2.220.61	10.2.220.61
63	10.2.220.62/32	10.2.220.62 – 10.2.220.62	10.2.220.62
64	10.2.220.63/32	10.2.220.63 – 10.2.220.63	10.2.220.63
65	10.2.220.64/32	10.2.220.64 – 10.2.220.64	10.2.220.64
66	10.2.220.65/32	10.2.220.65 – 10.2.220.65	10.2.220.65
67	10.2.220.66/32	10.2.220.66 – 10.2.220.66	10.2.220.66
68	10.2.220.67/32	10.2.220.67 – 10.2.220.67	10.2.220.67
69	10.2.220.68/32	10.2.220.68 – 10.2.220.68	10.2.220.68
70	10.2.220.69/32	10.2.220.69 – 10.2.220.69	10.2.220.69
71	10.2.220.70/32	10.2.220.70 – 10.2.220.70	10.2.220.70
72	10.2.220.71/32	10.2.220.71 – 10.2.220.71	10.2.220.71
73	10.2.220.72/32	10.2.220.72 – 10.2.220.72	10.2.220.72
74	10.2.220.73/32	10.2.220.73 – 10.2.220.73	10.2.220.73
75	10.2.220.74/32	10.2.220.74 – 10.2.220.74	10.2.220.74
76	10.2.220.75/32	10.2.220.75 – 10.2.220.75	10.2.220.75
77	10.2.220.76/32	10.2.220.76 – 10.2.220.76	10.2.220.76
78	10.2.220.77/32	10.2.220.77 – 10.2.220.77	10.2.220.77
79	10.2.220.78/32	10.2.220.78 – 10.2.220.78	10.2.220.78
80	10.2.220.79/32	10.2.220.79 – 10.2.220.79	10.2.220.79
81	10.2.220.80/32	10.2.220.80 – 10.2.220.80	10.2.220.80
82	10.2.220.81/32	10.2.220.81 – 10.2.220.81	10.2.220.81
83	10.2.220.82/32	10.2.220.82 – 10.2.220.82	10.2.220.82
84	10.2.220.83/32	10.2.220.83 – 10.2.220.83	10.2.220.83
85	10.2.220.84/32	10.2.220.84 – 10.2.220.84	10.2.220.84
86	10.2.220.85/32	10.2.220.85 – 10.2.220.85	10.2.220.85
87	10.2.220.86/32	10.2.220.86 – 10.2.220.86	10.2.220.86
88	10.2.220.87/32	10.2.220.87 – 10.2.220.87	10.2.220.87
89	10.2.220.88/32	10.2.220.88 – 10.2.220.88	10.2.220.88
90	10.2.220.89/32	10.2.220.89 – 10.2.220.89	10.2.220.89
91	10.2.220.90/32	10.2.220.90 – 10.2.220.90	10.2.220.90
92	10.2.220.91/32	10.2.220.91 – 10.2.220.91	10.2.220.91
93	10.2.220.92/32	10.2.220.92 – 10.2.220.92	10.2.220.92
94	10.2.220.93/32	10.2.220.93 – 10.2.220.93	10.2.220.93
95	10.2.220.94/32	10.2.220.94 – 10.2.220.94	10.2.220.94
96	10.2.220.95/32	10.2.220.95 – 10.2.220.95	10.2.220.95
97	10.2.220.96/32	10.2.220.96 – 10.2.220.96	10.2.220.96
98	10.2.220.97/32	10.2.220.97 – 10.2.220.97	10.2.220.97
99	10.2.220.98/32	10.2.220.98 – 10.2.220.98	10.2.220.98
100	10.2.220.99/32	10.2.220.99 – 10.2.220.99	10.2.220.99
101	10.2.220.100/32	10.2.220.100 – 10.2.220.100	10.2.220.100
102	10.2.220.101/32	10.2.220.101 – 10.2.220.101	10.2.220.101
103	10.2.220.102/32	10.2.220.102 – 10.2.220.102	10.2.220.102
104	10.2.220.103/32	10.2.220.103 – 10.2.220.103	10.2.220.103
105	10.2.220.104/32	10.2.220.104 – 10.2.220.104	10.2.220.104
106	10.2.220.105/32	10.2.220.105 – 10.2.220.105	10.2.220.105
107	10.2.220.106/32	10.2.220.106 – 10.2.220.106	10.2.220.106
108	10.2.220.107/32	10.2.220.107 – 10.2.220.107	10.2.220.107
109	10.2.220.108/32	10.2.220.108 – 10.2.220.108	10.2.220.108
110	10.2.220.109/32	10.2.220.109 – 10.2.220.109	10.2.220.109
111	10.2.220.110/32	10.2.220.110 – 10.2.220.110	10.2.220.110
112	10.2.220.111/32	10.2.220.111 – 10.2.220.111	10.2.220.111
113	10.2.220.112/32	10.2.220.112 – 10.2.220.112	10.2.220.112
114	10.2.220.113/32	10.2.220.113 – 10.2.220.113	10.2.220.113
115	10.2.220.114/32	10.2.220.114 – 10.2.220.114	10.2.220.114
116	10.2.220.115/32	10.2.220.115 – 10.2.220.115	10.2.220.115
117	10.2.220.116/32	10.2.220.116 – 10.2.220.116	10.2.220.116
118	10.2.220.117/32	10.2.220.117 – 10.2.220.117	10.2.220.117
119	10.2.220.118/32	10.2.220.118 – 10.2.220.118	10.2.220.118
120	10.2.220.119/32	10.2.220.119 – 10.2.220.119	10.2.220.119
121	10.2.220.120/32	10.2.220.120 – 10.2.220.120	10.2.220.120
122	10.2.220.121/32	10.2.220.121 – 10.2.220.121	10.2.220.121
123	10.2.220.122/32	10.2.220.122 – 10.2.220.122	10.2.220.122
124	10.2.220.123/32	10.2.220.123 – 10.2.220.123	10.2.220.123
125	10.2.220.124/32	10.2.220.124 – 10.2.220.124	10.2.220.124
126	10.2.220.125/32	10.2.220.125 – 10.2.220.125	10.2.220.125
127	10.2.220.126/32	10.2.220.126 – 10.2.220.126	10.2.220.126
128	10.2.220.127/32	10.2.220.127 – 10.2.220.127	10.2.220.127
129	10.2.220.128/32	10.2.220.128 – 10.2.220.128	10.2.220.128
130	10.2.220.129/32	10.2.220.129 – 10.2.220.129	10.2.220.129
131	10.2.220.130/32	10.2.220.130 – 10.2.220.130	10.2.220.130
132	10.2.220.131/32	10.2.220.131 – 10.2.220.131	10.2.220.131
133	10.2.220.132/32	10.2.220.132 – 10.2.220.132	10.2.220.132
134	10.2.220.133/32	10.2.220.133 – 10.2.220.133	10.2.220.133
135	10.2.220.134/32	10.2.220.134 – 10.2.220.134	10.2.220.134
136	10.2.220.135/32	10.2.220.135 – 10.2.220.135	10.2.220.135
137	10.2.220.136/32	10.2.220.136 – 10.2.220.136	10.2.220.136
138	10.2.220.137/32	10.2.220.137 – 10.2.220.137	10.2.220.137
139	10.2.220.138/32	10.2.220.138 – 10.2.220.138	10.2.220.138
140	10.2.220.139/32	10.2.220.139 – 10.2.220.139	10.2.220.139
141	10.2.220.140/32	10.2.220.140 – 10.2.220.140	10.2.220.140
142	10.2.220.141/32	10.2.220.141 – 10.2.220.141	10.2.220.141
143	10.2.220.142/32	10.2.220.142 – 10.2.220.142	10.2.220.142
144	10.2.220.143/32	10.2.220.143 – 10.2.220.143	10.2.220.143
145	10.2.220.144/32	10.2.220.144 – 10.2.220.144	10.2.220.144
146	10.2.220.145/32	10.2.220.145 – 10.2.220.145	10.2.220.145
147	10.2.220.146/32	10.2.220.146 – 10.2.220.146	10.2.220.146
148	10.2.220.147/32	10.2.220.147 – 10.2.220.147	10.2.220.147
149	10.2.220.148/32	10.2.220.148 – 10.2.220.148	10.2.220.148
150	10.2.220.149/32	10.2.220.149 – 10.2.220.149	10.2.220.149
151	10.2.220.150/32	10.2.220.150 – 10.2.220.150	10.2.220.150
152	10.2.220.151/32	10.2.220.151 – 10.2.220.151	10.2.220.151
153	10.2.220.152/32	10.2.220.152 – 10.2.220.152	10.2.220.152
154	10.2.220.153/32	10.2.220.153 – 10.2.220.153	10.2.220.153
155	10.2.220.154/32	10.2.220.154 – 10.2.220.154	10.2.220.154
156	10.2.220.155/32	10.2.220.155 – 10.2.220.155	10.2.220.155
157	10.2.220.156/32	10.2.220.156 – 10.2.220.156	10.2.220.156
158	10.2.220.157/32	10.2.220.157 – 10.2.220.157	10.2.220.157
159	10.2.220.158/32	10.2.220.158 – 10.2.220.158	10.2.220.158
160	10.2.220.159/32	10.2.220.159 – 10.2.220.159	10.2.220.159
161	10.2.220.160/32	10.2.220.160 – 10.2.220.160	10.2.220.160
162	10.2.220.161/32	10.2.220.161 – 10.2.220.161	10.2.220.161
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210	10.2.220.209/32	10.2.220.209 – 10.2.220.209	10.2.220.209
211	10.2.220.210/32	10.2.220.210 – 10.2.220.210	10.2.220.210
212	10.2.220.211/32	10.2.220.211 – 10.2.220.211	10.2.220.211
213	10.2.220.212/32	10.2.220.212 – 10.2.220.212	10.2.220.212
214	10.2.220.213/32	10.2.220.213 – 10.2.220.213	10.2.220.213
215	10.2.220.214/32	10.2.220.214 – 10.2.220.214	10.2.220.214
216	10.2.220.215/32	10.2.220.215 – 10.2.220.215	10.2.220.215
217	10.2.220.216/32	10.2.220.216 – 10.2.220.216	10.2.220.216
218	10.2.220.217/32	10.2.220.217 – 10.2.220.217	10.2.220.217
219	10.2.220.218/32	10.2.220.218 – 10.2.220.218	10.2.220.218
220	10.2.220.219/32	10.2.220.219 – 10.2.220.219	10.2.220.219
221	10.2.220.220/32	10.2.220.220 – 10.2.220.220	10.2.220.220
222	10.2.220.221/32	10.2.220.221 – 10.2.220.221	10.2.220.221
223	10.2.220.222/32	10.2.220.222 – 10.2.220.222	10.2.220.222
224	10.2.220.223/32	10.2.220.223 – 10.2.220.223	10.2.220.223
225	10.2.220.224/32	10.2.220.224 – 10.2.220.224	10.2.220.224
226	10.2.220.225/32	10.2.220.225 – 10.2.220.225	10.2.220.225
227	10.2.220.226/32	10.2.220.226 – 10.2.220.226	10.2.220.226
228	10.2.220.227/32	10.2.220.227 – 10.2.220.227	10.2.220.227
229	10.2.220.228/32	10.2.220.228 – 10.2.220.228	10.2.220.228
230	10.2.220.229/32	10.2.220.229 – 10.2.220.229	10.2.220.229
231	10.2.220.230/32	10.2.220.230 – 10.2.220.230	10.2.220.230
232	10.2.220.231/32	10.2.220.231 – 10.2.220.231	10.2.220.231
233	10.2.220.232/32	10.2.220.232 – 10.2.220.232	10.2.220.232
234	10.2.220.233/32	10.2.220.233 – 10.2.220.233	10.2.220.233
235	10.2.220.234/32	10.2.220.234 – 10.2.220.234	10.2.220.234
236	10.2.220.235/32	10.2.220.235 – 10.2.220.235	10.2.220.235
237	10.2.220.236/32	10.2.220.236 – 10.2.220.236	10.2.220.236
238	10.2.220.237/32	10.2.220.237 – 10.2.220.237	10.2.220.237
239	10.2.220.238/32	10.2.220.238 – 10.2.220.238	10.2.220.238
240	10.2.220.239/32	10.2.220.239 – 10.2.220.239	10.2.220.239
241	10.2.220.240/32	10.2.220.240 – 10.2.220.240	10.2.220.240
242	10.2.220.241/32	10.2.220.241 – 10.2.220.241	10.2.220.241
243	10.2.220.242/32	10.2.220.242 – 10.2.220.242	10.2.220.242
244	10.2.220.243/32	10.2.220.243 – 10.2.220.243	10.2.220.243
245	10.2.220.244/32	10.2.220.244 – 10.2.220.244	10.2.220.244
246	10.2.220.245/32	10.2.220.245 – 10.2.220.245	10.2.220.245
247	10.2.220.246/32	10.2.220.246 – 10.2.220.246	10.2.220.246
248	10.2.220.247/32	10.2.220.247 – 10.2.220.247	10.2.220.247
249	10.2.220.248/32	10.2.220.248 – 10.2.220.248	10.2.220.248
250	10.2.220.249/32	10.2.220.249 – 10.2.220.249	10.2.220.249
251	10.2.220.250/32	10.2.220.250 – 10.2.220.250	10.2.220.250
252	10.2.220.251/32	10.2.220.251 – 10.2.220.251	10.2.220.251
253	10.2.220.252/32	10.2.220.252 – 10.2.220.252	10.2.220.252
254	10.2.220.253/32	10.2.220.253 – 10.2.220.253	10.2.220.253
255	10.2.220.254/32	10.2.220.254 – 10.2.220.254	10.2.220.254
256	10.2.220.255/32	10.2.220.255 – 10.2.220.255	10.2.220.255

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 →