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)10.71.36.0/22

network10.71.36.0/22

broadcast10.71.39.255

first host10.71.36.1

last host10.71.39.254

subnet mask255.255.252.0

wildcard0.0.3.255

addresses1,024

usable hosts1,022

classA

ipcalc 10.71.36.0/22

address00001010.01000111.00100100.00000000

subnet mask11111111.11111111.11111100.00000000

network00001010.01000111.00100100.00000000

broadcast00001010.01000111.00100111.11111111

green = network part, grey = host part

hex0x0a472400

decimal172434432

reverse dns0.36.71.10.in-addr.arpa

ipv4-mapped::ffff:a47:2400

/22 split into /31 · 512 subnets

close ×

#	network	host range	broadcast
1	10.71.36.0/31	10.71.36.0 – 10.71.36.1	10.71.36.1
2	10.71.36.2/31	10.71.36.2 – 10.71.36.3	10.71.36.3
3	10.71.36.4/31	10.71.36.4 – 10.71.36.5	10.71.36.5
4	10.71.36.6/31	10.71.36.6 – 10.71.36.7	10.71.36.7
5	10.71.36.8/31	10.71.36.8 – 10.71.36.9	10.71.36.9
6	10.71.36.10/31	10.71.36.10 – 10.71.36.11	10.71.36.11
7	10.71.36.12/31	10.71.36.12 – 10.71.36.13	10.71.36.13
8	10.71.36.14/31	10.71.36.14 – 10.71.36.15	10.71.36.15
9	10.71.36.16/31	10.71.36.16 – 10.71.36.17	10.71.36.17
10	10.71.36.18/31	10.71.36.18 – 10.71.36.19	10.71.36.19
11	10.71.36.20/31	10.71.36.20 – 10.71.36.21	10.71.36.21
12	10.71.36.22/31	10.71.36.22 – 10.71.36.23	10.71.36.23
13	10.71.36.24/31	10.71.36.24 – 10.71.36.25	10.71.36.25
14	10.71.36.26/31	10.71.36.26 – 10.71.36.27	10.71.36.27
15	10.71.36.28/31	10.71.36.28 – 10.71.36.29	10.71.36.29
16	10.71.36.30/31	10.71.36.30 – 10.71.36.31	10.71.36.31
17	10.71.36.32/31	10.71.36.32 – 10.71.36.33	10.71.36.33
18	10.71.36.34/31	10.71.36.34 – 10.71.36.35	10.71.36.35
19	10.71.36.36/31	10.71.36.36 – 10.71.36.37	10.71.36.37
20	10.71.36.38/31	10.71.36.38 – 10.71.36.39	10.71.36.39
21	10.71.36.40/31	10.71.36.40 – 10.71.36.41	10.71.36.41
22	10.71.36.42/31	10.71.36.42 – 10.71.36.43	10.71.36.43
23	10.71.36.44/31	10.71.36.44 – 10.71.36.45	10.71.36.45
24	10.71.36.46/31	10.71.36.46 – 10.71.36.47	10.71.36.47
25	10.71.36.48/31	10.71.36.48 – 10.71.36.49	10.71.36.49
26	10.71.36.50/31	10.71.36.50 – 10.71.36.51	10.71.36.51
27	10.71.36.52/31	10.71.36.52 – 10.71.36.53	10.71.36.53
28	10.71.36.54/31	10.71.36.54 – 10.71.36.55	10.71.36.55
29	10.71.36.56/31	10.71.36.56 – 10.71.36.57	10.71.36.57
30	10.71.36.58/31	10.71.36.58 – 10.71.36.59	10.71.36.59
31	10.71.36.60/31	10.71.36.60 – 10.71.36.61	10.71.36.61
32	10.71.36.62/31	10.71.36.62 – 10.71.36.63	10.71.36.63
33	10.71.36.64/31	10.71.36.64 – 10.71.36.65	10.71.36.65
34	10.71.36.66/31	10.71.36.66 – 10.71.36.67	10.71.36.67
35	10.71.36.68/31	10.71.36.68 – 10.71.36.69	10.71.36.69
36	10.71.36.70/31	10.71.36.70 – 10.71.36.71	10.71.36.71
37	10.71.36.72/31	10.71.36.72 – 10.71.36.73	10.71.36.73
38	10.71.36.74/31	10.71.36.74 – 10.71.36.75	10.71.36.75
39	10.71.36.76/31	10.71.36.76 – 10.71.36.77	10.71.36.77
40	10.71.36.78/31	10.71.36.78 – 10.71.36.79	10.71.36.79
41	10.71.36.80/31	10.71.36.80 – 10.71.36.81	10.71.36.81
42	10.71.36.82/31	10.71.36.82 – 10.71.36.83	10.71.36.83
43	10.71.36.84/31	10.71.36.84 – 10.71.36.85	10.71.36.85
44	10.71.36.86/31	10.71.36.86 – 10.71.36.87	10.71.36.87
45	10.71.36.88/31	10.71.36.88 – 10.71.36.89	10.71.36.89
46	10.71.36.90/31	10.71.36.90 – 10.71.36.91	10.71.36.91
47	10.71.36.92/31	10.71.36.92 – 10.71.36.93	10.71.36.93
48	10.71.36.94/31	10.71.36.94 – 10.71.36.95	10.71.36.95
49	10.71.36.96/31	10.71.36.96 – 10.71.36.97	10.71.36.97
50	10.71.36.98/31	10.71.36.98 – 10.71.36.99	10.71.36.99
51	10.71.36.100/31	10.71.36.100 – 10.71.36.101	10.71.36.101
52	10.71.36.102/31	10.71.36.102 – 10.71.36.103	10.71.36.103
53	10.71.36.104/31	10.71.36.104 – 10.71.36.105	10.71.36.105
54	10.71.36.106/31	10.71.36.106 – 10.71.36.107	10.71.36.107
55	10.71.36.108/31	10.71.36.108 – 10.71.36.109	10.71.36.109
56	10.71.36.110/31	10.71.36.110 – 10.71.36.111	10.71.36.111
57	10.71.36.112/31	10.71.36.112 – 10.71.36.113	10.71.36.113
58	10.71.36.114/31	10.71.36.114 – 10.71.36.115	10.71.36.115
59	10.71.36.116/31	10.71.36.116 – 10.71.36.117	10.71.36.117
60	10.71.36.118/31	10.71.36.118 – 10.71.36.119	10.71.36.119
61	10.71.36.120/31	10.71.36.120 – 10.71.36.121	10.71.36.121
62	10.71.36.122/31	10.71.36.122 – 10.71.36.123	10.71.36.123
63	10.71.36.124/31	10.71.36.124 – 10.71.36.125	10.71.36.125
64	10.71.36.126/31	10.71.36.126 – 10.71.36.127	10.71.36.127
65	10.71.36.128/31	10.71.36.128 – 10.71.36.129	10.71.36.129
66	10.71.36.130/31	10.71.36.130 – 10.71.36.131	10.71.36.131
67	10.71.36.132/31	10.71.36.132 – 10.71.36.133	10.71.36.133
68	10.71.36.134/31	10.71.36.134 – 10.71.36.135	10.71.36.135
69	10.71.36.136/31	10.71.36.136 – 10.71.36.137	10.71.36.137
70	10.71.36.138/31	10.71.36.138 – 10.71.36.139	10.71.36.139
71	10.71.36.140/31	10.71.36.140 – 10.71.36.141	10.71.36.141
72	10.71.36.142/31	10.71.36.142 – 10.71.36.143	10.71.36.143
73	10.71.36.144/31	10.71.36.144 – 10.71.36.145	10.71.36.145
74	10.71.36.146/31	10.71.36.146 – 10.71.36.147	10.71.36.147
75	10.71.36.148/31	10.71.36.148 – 10.71.36.149	10.71.36.149
76	10.71.36.150/31	10.71.36.150 – 10.71.36.151	10.71.36.151
77	10.71.36.152/31	10.71.36.152 – 10.71.36.153	10.71.36.153
78	10.71.36.154/31	10.71.36.154 – 10.71.36.155	10.71.36.155
79	10.71.36.156/31	10.71.36.156 – 10.71.36.157	10.71.36.157
80	10.71.36.158/31	10.71.36.158 – 10.71.36.159	10.71.36.159
81	10.71.36.160/31	10.71.36.160 – 10.71.36.161	10.71.36.161
82	10.71.36.162/31	10.71.36.162 – 10.71.36.163	10.71.36.163
83	10.71.36.164/31	10.71.36.164 – 10.71.36.165	10.71.36.165
84	10.71.36.166/31	10.71.36.166 – 10.71.36.167	10.71.36.167
85	10.71.36.168/31	10.71.36.168 – 10.71.36.169	10.71.36.169
86	10.71.36.170/31	10.71.36.170 – 10.71.36.171	10.71.36.171
87	10.71.36.172/31	10.71.36.172 – 10.71.36.173	10.71.36.173
88	10.71.36.174/31	10.71.36.174 – 10.71.36.175	10.71.36.175
89	10.71.36.176/31	10.71.36.176 – 10.71.36.177	10.71.36.177
90	10.71.36.178/31	10.71.36.178 – 10.71.36.179	10.71.36.179
91	10.71.36.180/31	10.71.36.180 – 10.71.36.181	10.71.36.181
92	10.71.36.182/31	10.71.36.182 – 10.71.36.183	10.71.36.183
93	10.71.36.184/31	10.71.36.184 – 10.71.36.185	10.71.36.185
94	10.71.36.186/31	10.71.36.186 – 10.71.36.187	10.71.36.187
95	10.71.36.188/31	10.71.36.188 – 10.71.36.189	10.71.36.189
96	10.71.36.190/31	10.71.36.190 – 10.71.36.191	10.71.36.191
97	10.71.36.192/31	10.71.36.192 – 10.71.36.193	10.71.36.193
98	10.71.36.194/31	10.71.36.194 – 10.71.36.195	10.71.36.195
99	10.71.36.196/31	10.71.36.196 – 10.71.36.197	10.71.36.197
100	10.71.36.198/31	10.71.36.198 – 10.71.36.199	10.71.36.199
101	10.71.36.200/31	10.71.36.200 – 10.71.36.201	10.71.36.201
102	10.71.36.202/31	10.71.36.202 – 10.71.36.203	10.71.36.203
103	10.71.36.204/31	10.71.36.204 – 10.71.36.205	10.71.36.205
104	10.71.36.206/31	10.71.36.206 – 10.71.36.207	10.71.36.207
105	10.71.36.208/31	10.71.36.208 – 10.71.36.209	10.71.36.209
106	10.71.36.210/31	10.71.36.210 – 10.71.36.211	10.71.36.211
107	10.71.36.212/31	10.71.36.212 – 10.71.36.213	10.71.36.213
108	10.71.36.214/31	10.71.36.214 – 10.71.36.215	10.71.36.215
109	10.71.36.216/31	10.71.36.216 – 10.71.36.217	10.71.36.217
110	10.71.36.218/31	10.71.36.218 – 10.71.36.219	10.71.36.219
111	10.71.36.220/31	10.71.36.220 – 10.71.36.221	10.71.36.221
112	10.71.36.222/31	10.71.36.222 – 10.71.36.223	10.71.36.223
113	10.71.36.224/31	10.71.36.224 – 10.71.36.225	10.71.36.225
114	10.71.36.226/31	10.71.36.226 – 10.71.36.227	10.71.36.227
115	10.71.36.228/31	10.71.36.228 – 10.71.36.229	10.71.36.229
116	10.71.36.230/31	10.71.36.230 – 10.71.36.231	10.71.36.231
117	10.71.36.232/31	10.71.36.232 – 10.71.36.233	10.71.36.233
118	10.71.36.234/31	10.71.36.234 – 10.71.36.235	10.71.36.235
119	10.71.36.236/31	10.71.36.236 – 10.71.36.237	10.71.36.237
120	10.71.36.238/31	10.71.36.238 – 10.71.36.239	10.71.36.239
121	10.71.36.240/31	10.71.36.240 – 10.71.36.241	10.71.36.241
122	10.71.36.242/31	10.71.36.242 – 10.71.36.243	10.71.36.243
123	10.71.36.244/31	10.71.36.244 – 10.71.36.245	10.71.36.245
124	10.71.36.246/31	10.71.36.246 – 10.71.36.247	10.71.36.247
125	10.71.36.248/31	10.71.36.248 – 10.71.36.249	10.71.36.249
126	10.71.36.250/31	10.71.36.250 – 10.71.36.251	10.71.36.251
127	10.71.36.252/31	10.71.36.252 – 10.71.36.253	10.71.36.253
128	10.71.36.254/31	10.71.36.254 – 10.71.36.255	10.71.36.255
129	10.71.37.0/31	10.71.37.0 – 10.71.37.1	10.71.37.1
130	10.71.37.2/31	10.71.37.2 – 10.71.37.3	10.71.37.3
131	10.71.37.4/31	10.71.37.4 – 10.71.37.5	10.71.37.5
132	10.71.37.6/31	10.71.37.6 – 10.71.37.7	10.71.37.7
133	10.71.37.8/31	10.71.37.8 – 10.71.37.9	10.71.37.9
134	10.71.37.10/31	10.71.37.10 – 10.71.37.11	10.71.37.11
135	10.71.37.12/31	10.71.37.12 – 10.71.37.13	10.71.37.13
136	10.71.37.14/31	10.71.37.14 – 10.71.37.15	10.71.37.15
137	10.71.37.16/31	10.71.37.16 – 10.71.37.17	10.71.37.17
138	10.71.37.18/31	10.71.37.18 – 10.71.37.19	10.71.37.19
139	10.71.37.20/31	10.71.37.20 – 10.71.37.21	10.71.37.21
140	10.71.37.22/31	10.71.37.22 – 10.71.37.23	10.71.37.23
141	10.71.37.24/31	10.71.37.24 – 10.71.37.25	10.71.37.25
142	10.71.37.26/31	10.71.37.26 – 10.71.37.27	10.71.37.27
143	10.71.37.28/31	10.71.37.28 – 10.71.37.29	10.71.37.29
144	10.71.37.30/31	10.71.37.30 – 10.71.37.31	10.71.37.31
145	10.71.37.32/31	10.71.37.32 – 10.71.37.33	10.71.37.33
146	10.71.37.34/31	10.71.37.34 – 10.71.37.35	10.71.37.35
147	10.71.37.36/31	10.71.37.36 – 10.71.37.37	10.71.37.37
148	10.71.37.38/31	10.71.37.38 – 10.71.37.39	10.71.37.39
149	10.71.37.40/31	10.71.37.40 – 10.71.37.41	10.71.37.41
150	10.71.37.42/31	10.71.37.42 – 10.71.37.43	10.71.37.43
151	10.71.37.44/31	10.71.37.44 – 10.71.37.45	10.71.37.45
152	10.71.37.46/31	10.71.37.46 – 10.71.37.47	10.71.37.47
153	10.71.37.48/31	10.71.37.48 – 10.71.37.49	10.71.37.49
154	10.71.37.50/31	10.71.37.50 – 10.71.37.51	10.71.37.51
155	10.71.37.52/31	10.71.37.52 – 10.71.37.53	10.71.37.53
156	10.71.37.54/31	10.71.37.54 – 10.71.37.55	10.71.37.55
157	10.71.37.56/31	10.71.37.56 – 10.71.37.57	10.71.37.57
158	10.71.37.58/31	10.71.37.58 – 10.71.37.59	10.71.37.59
159	10.71.37.60/31	10.71.37.60 – 10.71.37.61	10.71.37.61
160	10.71.37.62/31	10.71.37.62 – 10.71.37.63	10.71.37.63
161	10.71.37.64/31	10.71.37.64 – 10.71.37.65	10.71.37.65
162	10.71.37.66/31	10.71.37.66 – 10.71.37.67	10.71.37.67
163	10.71.37.68/31	10.71.37.68 – 10.71.37.69	10.71.37.69
164	10.71.37.70/31	10.71.37.70 – 10.71.37.71	10.71.37.71
165	10.71.37.72/31	10.71.37.72 – 10.71.37.73	10.71.37.73
166	10.71.37.74/31	10.71.37.74 – 10.71.37.75	10.71.37.75
167	10.71.37.76/31	10.71.37.76 – 10.71.37.77	10.71.37.77
168	10.71.37.78/31	10.71.37.78 – 10.71.37.79	10.71.37.79
169	10.71.37.80/31	10.71.37.80 – 10.71.37.81	10.71.37.81
170	10.71.37.82/31	10.71.37.82 – 10.71.37.83	10.71.37.83
171	10.71.37.84/31	10.71.37.84 – 10.71.37.85	10.71.37.85
172	10.71.37.86/31	10.71.37.86 – 10.71.37.87	10.71.37.87
173	10.71.37.88/31	10.71.37.88 – 10.71.37.89	10.71.37.89
174	10.71.37.90/31	10.71.37.90 – 10.71.37.91	10.71.37.91
175	10.71.37.92/31	10.71.37.92 – 10.71.37.93	10.71.37.93
176	10.71.37.94/31	10.71.37.94 – 10.71.37.95	10.71.37.95
177	10.71.37.96/31	10.71.37.96 – 10.71.37.97	10.71.37.97
178	10.71.37.98/31	10.71.37.98 – 10.71.37.99	10.71.37.99
179	10.71.37.100/31	10.71.37.100 – 10.71.37.101	10.71.37.101
180	10.71.37.102/31	10.71.37.102 – 10.71.37.103	10.71.37.103
181	10.71.37.104/31	10.71.37.104 – 10.71.37.105	10.71.37.105
182	10.71.37.106/31	10.71.37.106 – 10.71.37.107	10.71.37.107
183	10.71.37.108/31	10.71.37.108 – 10.71.37.109	10.71.37.109
184	10.71.37.110/31	10.71.37.110 – 10.71.37.111	10.71.37.111
185	10.71.37.112/31	10.71.37.112 – 10.71.37.113	10.71.37.113
186	10.71.37.114/31	10.71.37.114 – 10.71.37.115	10.71.37.115
187	10.71.37.116/31	10.71.37.116 – 10.71.37.117	10.71.37.117
188	10.71.37.118/31	10.71.37.118 – 10.71.37.119	10.71.37.119
189	10.71.37.120/31	10.71.37.120 – 10.71.37.121	10.71.37.121
190	10.71.37.122/31	10.71.37.122 – 10.71.37.123	10.71.37.123
191	10.71.37.124/31	10.71.37.124 – 10.71.37.125	10.71.37.125
192	10.71.37.126/31	10.71.37.126 – 10.71.37.127	10.71.37.127
193	10.71.37.128/31	10.71.37.128 – 10.71.37.129	10.71.37.129
194	10.71.37.130/31	10.71.37.130 – 10.71.37.131	10.71.37.131
195	10.71.37.132/31	10.71.37.132 – 10.71.37.133	10.71.37.133
196	10.71.37.134/31	10.71.37.134 – 10.71.37.135	10.71.37.135
197	10.71.37.136/31	10.71.37.136 – 10.71.37.137	10.71.37.137
198	10.71.37.138/31	10.71.37.138 – 10.71.37.139	10.71.37.139
199	10.71.37.140/31	10.71.37.140 – 10.71.37.141	10.71.37.141
200	10.71.37.142/31	10.71.37.142 – 10.71.37.143	10.71.37.143
201	10.71.37.144/31	10.71.37.144 – 10.71.37.145	10.71.37.145
202	10.71.37.146/31	10.71.37.146 – 10.71.37.147	10.71.37.147
203	10.71.37.148/31	10.71.37.148 – 10.71.37.149	10.71.37.149
204	10.71.37.150/31	10.71.37.150 – 10.71.37.151	10.71.37.151
205	10.71.37.152/31	10.71.37.152 – 10.71.37.153	10.71.37.153
206	10.71.37.154/31	10.71.37.154 – 10.71.37.155	10.71.37.155
207	10.71.37.156/31	10.71.37.156 – 10.71.37.157	10.71.37.157
208	10.71.37.158/31	10.71.37.158 – 10.71.37.159	10.71.37.159
209	10.71.37.160/31	10.71.37.160 – 10.71.37.161	10.71.37.161
210	10.71.37.162/31	10.71.37.162 – 10.71.37.163	10.71.37.163
211	10.71.37.164/31	10.71.37.164 – 10.71.37.165	10.71.37.165
212	10.71.37.166/31	10.71.37.166 – 10.71.37.167	10.71.37.167
213	10.71.37.168/31	10.71.37.168 – 10.71.37.169	10.71.37.169
214	10.71.37.170/31	10.71.37.170 – 10.71.37.171	10.71.37.171
215	10.71.37.172/31	10.71.37.172 – 10.71.37.173	10.71.37.173
216	10.71.37.174/31	10.71.37.174 – 10.71.37.175	10.71.37.175
217	10.71.37.176/31	10.71.37.176 – 10.71.37.177	10.71.37.177
218	10.71.37.178/31	10.71.37.178 – 10.71.37.179	10.71.37.179
219	10.71.37.180/31	10.71.37.180 – 10.71.37.181	10.71.37.181
220	10.71.37.182/31	10.71.37.182 – 10.71.37.183	10.71.37.183
221	10.71.37.184/31	10.71.37.184 – 10.71.37.185	10.71.37.185
222	10.71.37.186/31	10.71.37.186 – 10.71.37.187	10.71.37.187
223	10.71.37.188/31	10.71.37.188 – 10.71.37.189	10.71.37.189
224	10.71.37.190/31	10.71.37.190 – 10.71.37.191	10.71.37.191
225	10.71.37.192/31	10.71.37.192 – 10.71.37.193	10.71.37.193
226	10.71.37.194/31	10.71.37.194 – 10.71.37.195	10.71.37.195
227	10.71.37.196/31	10.71.37.196 – 10.71.37.197	10.71.37.197
228	10.71.37.198/31	10.71.37.198 – 10.71.37.199	10.71.37.199
229	10.71.37.200/31	10.71.37.200 – 10.71.37.201	10.71.37.201
230	10.71.37.202/31	10.71.37.202 – 10.71.37.203	10.71.37.203
231	10.71.37.204/31	10.71.37.204 – 10.71.37.205	10.71.37.205
232	10.71.37.206/31	10.71.37.206 – 10.71.37.207	10.71.37.207
233	10.71.37.208/31	10.71.37.208 – 10.71.37.209	10.71.37.209
234	10.71.37.210/31	10.71.37.210 – 10.71.37.211	10.71.37.211
235	10.71.37.212/31	10.71.37.212 – 10.71.37.213	10.71.37.213
236	10.71.37.214/31	10.71.37.214 – 10.71.37.215	10.71.37.215
237	10.71.37.216/31	10.71.37.216 – 10.71.37.217	10.71.37.217
238	10.71.37.218/31	10.71.37.218 – 10.71.37.219	10.71.37.219
239	10.71.37.220/31	10.71.37.220 – 10.71.37.221	10.71.37.221
240	10.71.37.222/31	10.71.37.222 – 10.71.37.223	10.71.37.223
241	10.71.37.224/31	10.71.37.224 – 10.71.37.225	10.71.37.225
242	10.71.37.226/31	10.71.37.226 – 10.71.37.227	10.71.37.227
243	10.71.37.228/31	10.71.37.228 – 10.71.37.229	10.71.37.229
244	10.71.37.230/31	10.71.37.230 – 10.71.37.231	10.71.37.231
245	10.71.37.232/31	10.71.37.232 – 10.71.37.233	10.71.37.233
246	10.71.37.234/31	10.71.37.234 – 10.71.37.235	10.71.37.235
247	10.71.37.236/31	10.71.37.236 – 10.71.37.237	10.71.37.237
248	10.71.37.238/31	10.71.37.238 – 10.71.37.239	10.71.37.239
249	10.71.37.240/31	10.71.37.240 – 10.71.37.241	10.71.37.241
250	10.71.37.242/31	10.71.37.242 – 10.71.37.243	10.71.37.243
251	10.71.37.244/31	10.71.37.244 – 10.71.37.245	10.71.37.245
252	10.71.37.246/31	10.71.37.246 – 10.71.37.247	10.71.37.247
253	10.71.37.248/31	10.71.37.248 – 10.71.37.249	10.71.37.249
254	10.71.37.250/31	10.71.37.250 – 10.71.37.251	10.71.37.251
255	10.71.37.252/31	10.71.37.252 – 10.71.37.253	10.71.37.253
256	10.71.37.254/31	10.71.37.254 – 10.71.37.255	10.71.37.255

showing 256 of 512

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 →