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)10.0.156.0/22

network10.0.156.0/22

broadcast10.0.159.255

first host10.0.156.1

last host10.0.159.254

subnet mask255.255.252.0

wildcard0.0.3.255

addresses1,024

usable hosts1,022

classA

ipcalc 10.0.156.0/22

address00001010.00000000.10011100.00000000

subnet mask11111111.11111111.11111100.00000000

network00001010.00000000.10011100.00000000

broadcast00001010.00000000.10011111.11111111

green = network part, grey = host part

hex0x0a009c00

decimal167812096

reverse dns0.156.0.10.in-addr.arpa

ipv4-mapped::ffff:a00:9c00

/22 split into /30 · 256 subnets

close ×

#	network	host range	broadcast
1	10.0.156.0/30	10.0.156.1 – 10.0.156.2	10.0.156.3
2	10.0.156.4/30	10.0.156.5 – 10.0.156.6	10.0.156.7
3	10.0.156.8/30	10.0.156.9 – 10.0.156.10	10.0.156.11
4	10.0.156.12/30	10.0.156.13 – 10.0.156.14	10.0.156.15
5	10.0.156.16/30	10.0.156.17 – 10.0.156.18	10.0.156.19
6	10.0.156.20/30	10.0.156.21 – 10.0.156.22	10.0.156.23
7	10.0.156.24/30	10.0.156.25 – 10.0.156.26	10.0.156.27
8	10.0.156.28/30	10.0.156.29 – 10.0.156.30	10.0.156.31
9	10.0.156.32/30	10.0.156.33 – 10.0.156.34	10.0.156.35
10	10.0.156.36/30	10.0.156.37 – 10.0.156.38	10.0.156.39
11	10.0.156.40/30	10.0.156.41 – 10.0.156.42	10.0.156.43
12	10.0.156.44/30	10.0.156.45 – 10.0.156.46	10.0.156.47
13	10.0.156.48/30	10.0.156.49 – 10.0.156.50	10.0.156.51
14	10.0.156.52/30	10.0.156.53 – 10.0.156.54	10.0.156.55
15	10.0.156.56/30	10.0.156.57 – 10.0.156.58	10.0.156.59
16	10.0.156.60/30	10.0.156.61 – 10.0.156.62	10.0.156.63
17	10.0.156.64/30	10.0.156.65 – 10.0.156.66	10.0.156.67
18	10.0.156.68/30	10.0.156.69 – 10.0.156.70	10.0.156.71
19	10.0.156.72/30	10.0.156.73 – 10.0.156.74	10.0.156.75
20	10.0.156.76/30	10.0.156.77 – 10.0.156.78	10.0.156.79
21	10.0.156.80/30	10.0.156.81 – 10.0.156.82	10.0.156.83
22	10.0.156.84/30	10.0.156.85 – 10.0.156.86	10.0.156.87
23	10.0.156.88/30	10.0.156.89 – 10.0.156.90	10.0.156.91
24	10.0.156.92/30	10.0.156.93 – 10.0.156.94	10.0.156.95
25	10.0.156.96/30	10.0.156.97 – 10.0.156.98	10.0.156.99
26	10.0.156.100/30	10.0.156.101 – 10.0.156.102	10.0.156.103
27	10.0.156.104/30	10.0.156.105 – 10.0.156.106	10.0.156.107
28	10.0.156.108/30	10.0.156.109 – 10.0.156.110	10.0.156.111
29	10.0.156.112/30	10.0.156.113 – 10.0.156.114	10.0.156.115
30	10.0.156.116/30	10.0.156.117 – 10.0.156.118	10.0.156.119
31	10.0.156.120/30	10.0.156.121 – 10.0.156.122	10.0.156.123
32	10.0.156.124/30	10.0.156.125 – 10.0.156.126	10.0.156.127
33	10.0.156.128/30	10.0.156.129 – 10.0.156.130	10.0.156.131
34	10.0.156.132/30	10.0.156.133 – 10.0.156.134	10.0.156.135
35	10.0.156.136/30	10.0.156.137 – 10.0.156.138	10.0.156.139
36	10.0.156.140/30	10.0.156.141 – 10.0.156.142	10.0.156.143
37	10.0.156.144/30	10.0.156.145 – 10.0.156.146	10.0.156.147
38	10.0.156.148/30	10.0.156.149 – 10.0.156.150	10.0.156.151
39	10.0.156.152/30	10.0.156.153 – 10.0.156.154	10.0.156.155
40	10.0.156.156/30	10.0.156.157 – 10.0.156.158	10.0.156.159
41	10.0.156.160/30	10.0.156.161 – 10.0.156.162	10.0.156.163
42	10.0.156.164/30	10.0.156.165 – 10.0.156.166	10.0.156.167
43	10.0.156.168/30	10.0.156.169 – 10.0.156.170	10.0.156.171
44	10.0.156.172/30	10.0.156.173 – 10.0.156.174	10.0.156.175
45	10.0.156.176/30	10.0.156.177 – 10.0.156.178	10.0.156.179
46	10.0.156.180/30	10.0.156.181 – 10.0.156.182	10.0.156.183
47	10.0.156.184/30	10.0.156.185 – 10.0.156.186	10.0.156.187
48	10.0.156.188/30	10.0.156.189 – 10.0.156.190	10.0.156.191
49	10.0.156.192/30	10.0.156.193 – 10.0.156.194	10.0.156.195
50	10.0.156.196/30	10.0.156.197 – 10.0.156.198	10.0.156.199
51	10.0.156.200/30	10.0.156.201 – 10.0.156.202	10.0.156.203
52	10.0.156.204/30	10.0.156.205 – 10.0.156.206	10.0.156.207
53	10.0.156.208/30	10.0.156.209 – 10.0.156.210	10.0.156.211
54	10.0.156.212/30	10.0.156.213 – 10.0.156.214	10.0.156.215
55	10.0.156.216/30	10.0.156.217 – 10.0.156.218	10.0.156.219
56	10.0.156.220/30	10.0.156.221 – 10.0.156.222	10.0.156.223
57	10.0.156.224/30	10.0.156.225 – 10.0.156.226	10.0.156.227
58	10.0.156.228/30	10.0.156.229 – 10.0.156.230	10.0.156.231
59	10.0.156.232/30	10.0.156.233 – 10.0.156.234	10.0.156.235
60	10.0.156.236/30	10.0.156.237 – 10.0.156.238	10.0.156.239
61	10.0.156.240/30	10.0.156.241 – 10.0.156.242	10.0.156.243
62	10.0.156.244/30	10.0.156.245 – 10.0.156.246	10.0.156.247
63	10.0.156.248/30	10.0.156.249 – 10.0.156.250	10.0.156.251
64	10.0.156.252/30	10.0.156.253 – 10.0.156.254	10.0.156.255
65	10.0.157.0/30	10.0.157.1 – 10.0.157.2	10.0.157.3
66	10.0.157.4/30	10.0.157.5 – 10.0.157.6	10.0.157.7
67	10.0.157.8/30	10.0.157.9 – 10.0.157.10	10.0.157.11
68	10.0.157.12/30	10.0.157.13 – 10.0.157.14	10.0.157.15
69	10.0.157.16/30	10.0.157.17 – 10.0.157.18	10.0.157.19
70	10.0.157.20/30	10.0.157.21 – 10.0.157.22	10.0.157.23
71	10.0.157.24/30	10.0.157.25 – 10.0.157.26	10.0.157.27
72	10.0.157.28/30	10.0.157.29 – 10.0.157.30	10.0.157.31
73	10.0.157.32/30	10.0.157.33 – 10.0.157.34	10.0.157.35
74	10.0.157.36/30	10.0.157.37 – 10.0.157.38	10.0.157.39
75	10.0.157.40/30	10.0.157.41 – 10.0.157.42	10.0.157.43
76	10.0.157.44/30	10.0.157.45 – 10.0.157.46	10.0.157.47
77	10.0.157.48/30	10.0.157.49 – 10.0.157.50	10.0.157.51
78	10.0.157.52/30	10.0.157.53 – 10.0.157.54	10.0.157.55
79	10.0.157.56/30	10.0.157.57 – 10.0.157.58	10.0.157.59
80	10.0.157.60/30	10.0.157.61 – 10.0.157.62	10.0.157.63
81	10.0.157.64/30	10.0.157.65 – 10.0.157.66	10.0.157.67
82	10.0.157.68/30	10.0.157.69 – 10.0.157.70	10.0.157.71
83	10.0.157.72/30	10.0.157.73 – 10.0.157.74	10.0.157.75
84	10.0.157.76/30	10.0.157.77 – 10.0.157.78	10.0.157.79
85	10.0.157.80/30	10.0.157.81 – 10.0.157.82	10.0.157.83
86	10.0.157.84/30	10.0.157.85 – 10.0.157.86	10.0.157.87
87	10.0.157.88/30	10.0.157.89 – 10.0.157.90	10.0.157.91
88	10.0.157.92/30	10.0.157.93 – 10.0.157.94	10.0.157.95
89	10.0.157.96/30	10.0.157.97 – 10.0.157.98	10.0.157.99
90	10.0.157.100/30	10.0.157.101 – 10.0.157.102	10.0.157.103
91	10.0.157.104/30	10.0.157.105 – 10.0.157.106	10.0.157.107
92	10.0.157.108/30	10.0.157.109 – 10.0.157.110	10.0.157.111
93	10.0.157.112/30	10.0.157.113 – 10.0.157.114	10.0.157.115
94	10.0.157.116/30	10.0.157.117 – 10.0.157.118	10.0.157.119
95	10.0.157.120/30	10.0.157.121 – 10.0.157.122	10.0.157.123
96	10.0.157.124/30	10.0.157.125 – 10.0.157.126	10.0.157.127
97	10.0.157.128/30	10.0.157.129 – 10.0.157.130	10.0.157.131
98	10.0.157.132/30	10.0.157.133 – 10.0.157.134	10.0.157.135
99	10.0.157.136/30	10.0.157.137 – 10.0.157.138	10.0.157.139
100	10.0.157.140/30	10.0.157.141 – 10.0.157.142	10.0.157.143
101	10.0.157.144/30	10.0.157.145 – 10.0.157.146	10.0.157.147
102	10.0.157.148/30	10.0.157.149 – 10.0.157.150	10.0.157.151
103	10.0.157.152/30	10.0.157.153 – 10.0.157.154	10.0.157.155
104	10.0.157.156/30	10.0.157.157 – 10.0.157.158	10.0.157.159
105	10.0.157.160/30	10.0.157.161 – 10.0.157.162	10.0.157.163
106	10.0.157.164/30	10.0.157.165 – 10.0.157.166	10.0.157.167
107	10.0.157.168/30	10.0.157.169 – 10.0.157.170	10.0.157.171
108	10.0.157.172/30	10.0.157.173 – 10.0.157.174	10.0.157.175
109	10.0.157.176/30	10.0.157.177 – 10.0.157.178	10.0.157.179
110	10.0.157.180/30	10.0.157.181 – 10.0.157.182	10.0.157.183
111	10.0.157.184/30	10.0.157.185 – 10.0.157.186	10.0.157.187
112	10.0.157.188/30	10.0.157.189 – 10.0.157.190	10.0.157.191
113	10.0.157.192/30	10.0.157.193 – 10.0.157.194	10.0.157.195
114	10.0.157.196/30	10.0.157.197 – 10.0.157.198	10.0.157.199
115	10.0.157.200/30	10.0.157.201 – 10.0.157.202	10.0.157.203
116	10.0.157.204/30	10.0.157.205 – 10.0.157.206	10.0.157.207
117	10.0.157.208/30	10.0.157.209 – 10.0.157.210	10.0.157.211
118	10.0.157.212/30	10.0.157.213 – 10.0.157.214	10.0.157.215
119	10.0.157.216/30	10.0.157.217 – 10.0.157.218	10.0.157.219
120	10.0.157.220/30	10.0.157.221 – 10.0.157.222	10.0.157.223
121	10.0.157.224/30	10.0.157.225 – 10.0.157.226	10.0.157.227
122	10.0.157.228/30	10.0.157.229 – 10.0.157.230	10.0.157.231
123	10.0.157.232/30	10.0.157.233 – 10.0.157.234	10.0.157.235
124	10.0.157.236/30	10.0.157.237 – 10.0.157.238	10.0.157.239
125	10.0.157.240/30	10.0.157.241 – 10.0.157.242	10.0.157.243
126	10.0.157.244/30	10.0.157.245 – 10.0.157.246	10.0.157.247
127	10.0.157.248/30	10.0.157.249 – 10.0.157.250	10.0.157.251
128	10.0.157.252/30	10.0.157.253 – 10.0.157.254	10.0.157.255
129	10.0.158.0/30	10.0.158.1 – 10.0.158.2	10.0.158.3
130	10.0.158.4/30	10.0.158.5 – 10.0.158.6	10.0.158.7
131	10.0.158.8/30	10.0.158.9 – 10.0.158.10	10.0.158.11
132	10.0.158.12/30	10.0.158.13 – 10.0.158.14	10.0.158.15
133	10.0.158.16/30	10.0.158.17 – 10.0.158.18	10.0.158.19
134	10.0.158.20/30	10.0.158.21 – 10.0.158.22	10.0.158.23
135	10.0.158.24/30	10.0.158.25 – 10.0.158.26	10.0.158.27
136	10.0.158.28/30	10.0.158.29 – 10.0.158.30	10.0.158.31
137	10.0.158.32/30	10.0.158.33 – 10.0.158.34	10.0.158.35
138	10.0.158.36/30	10.0.158.37 – 10.0.158.38	10.0.158.39
139	10.0.158.40/30	10.0.158.41 – 10.0.158.42	10.0.158.43
140	10.0.158.44/30	10.0.158.45 – 10.0.158.46	10.0.158.47
141	10.0.158.48/30	10.0.158.49 – 10.0.158.50	10.0.158.51
142	10.0.158.52/30	10.0.158.53 – 10.0.158.54	10.0.158.55
143	10.0.158.56/30	10.0.158.57 – 10.0.158.58	10.0.158.59
144	10.0.158.60/30	10.0.158.61 – 10.0.158.62	10.0.158.63
145	10.0.158.64/30	10.0.158.65 – 10.0.158.66	10.0.158.67
146	10.0.158.68/30	10.0.158.69 – 10.0.158.70	10.0.158.71
147	10.0.158.72/30	10.0.158.73 – 10.0.158.74	10.0.158.75
148	10.0.158.76/30	10.0.158.77 – 10.0.158.78	10.0.158.79
149	10.0.158.80/30	10.0.158.81 – 10.0.158.82	10.0.158.83
150	10.0.158.84/30	10.0.158.85 – 10.0.158.86	10.0.158.87
151	10.0.158.88/30	10.0.158.89 – 10.0.158.90	10.0.158.91
152	10.0.158.92/30	10.0.158.93 – 10.0.158.94	10.0.158.95
153	10.0.158.96/30	10.0.158.97 – 10.0.158.98	10.0.158.99
154	10.0.158.100/30	10.0.158.101 – 10.0.158.102	10.0.158.103
155	10.0.158.104/30	10.0.158.105 – 10.0.158.106	10.0.158.107
156	10.0.158.108/30	10.0.158.109 – 10.0.158.110	10.0.158.111
157	10.0.158.112/30	10.0.158.113 – 10.0.158.114	10.0.158.115
158	10.0.158.116/30	10.0.158.117 – 10.0.158.118	10.0.158.119
159	10.0.158.120/30	10.0.158.121 – 10.0.158.122	10.0.158.123
160	10.0.158.124/30	10.0.158.125 – 10.0.158.126	10.0.158.127
161	10.0.158.128/30	10.0.158.129 – 10.0.158.130	10.0.158.131
162	10.0.158.132/30	10.0.158.133 – 10.0.158.134	10.0.158.135
163	10.0.158.136/30	10.0.158.137 – 10.0.158.138	10.0.158.139
164	10.0.158.140/30	10.0.158.141 – 10.0.158.142	10.0.158.143
165	10.0.158.144/30	10.0.158.145 – 10.0.158.146	10.0.158.147
166	10.0.158.148/30	10.0.158.149 – 10.0.158.150	10.0.158.151
167	10.0.158.152/30	10.0.158.153 – 10.0.158.154	10.0.158.155
168	10.0.158.156/30	10.0.158.157 – 10.0.158.158	10.0.158.159
169	10.0.158.160/30	10.0.158.161 – 10.0.158.162	10.0.158.163
170	10.0.158.164/30	10.0.158.165 – 10.0.158.166	10.0.158.167
171	10.0.158.168/30	10.0.158.169 – 10.0.158.170	10.0.158.171
172	10.0.158.172/30	10.0.158.173 – 10.0.158.174	10.0.158.175
173	10.0.158.176/30	10.0.158.177 – 10.0.158.178	10.0.158.179
174	10.0.158.180/30	10.0.158.181 – 10.0.158.182	10.0.158.183
175	10.0.158.184/30	10.0.158.185 – 10.0.158.186	10.0.158.187
176	10.0.158.188/30	10.0.158.189 – 10.0.158.190	10.0.158.191
177	10.0.158.192/30	10.0.158.193 – 10.0.158.194	10.0.158.195
178	10.0.158.196/30	10.0.158.197 – 10.0.158.198	10.0.158.199
179	10.0.158.200/30	10.0.158.201 – 10.0.158.202	10.0.158.203
180	10.0.158.204/30	10.0.158.205 – 10.0.158.206	10.0.158.207
181	10.0.158.208/30	10.0.158.209 – 10.0.158.210	10.0.158.211
182	10.0.158.212/30	10.0.158.213 – 10.0.158.214	10.0.158.215
183	10.0.158.216/30	10.0.158.217 – 10.0.158.218	10.0.158.219
184	10.0.158.220/30	10.0.158.221 – 10.0.158.222	10.0.158.223
185	10.0.158.224/30	10.0.158.225 – 10.0.158.226	10.0.158.227
186	10.0.158.228/30	10.0.158.229 – 10.0.158.230	10.0.158.231
187	10.0.158.232/30	10.0.158.233 – 10.0.158.234	10.0.158.235
188	10.0.158.236/30	10.0.158.237 – 10.0.158.238	10.0.158.239
189	10.0.158.240/30	10.0.158.241 – 10.0.158.242	10.0.158.243
190	10.0.158.244/30	10.0.158.245 – 10.0.158.246	10.0.158.247
191	10.0.158.248/30	10.0.158.249 – 10.0.158.250	10.0.158.251
192	10.0.158.252/30	10.0.158.253 – 10.0.158.254	10.0.158.255
193	10.0.159.0/30	10.0.159.1 – 10.0.159.2	10.0.159.3
194	10.0.159.4/30	10.0.159.5 – 10.0.159.6	10.0.159.7
195	10.0.159.8/30	10.0.159.9 – 10.0.159.10	10.0.159.11
196	10.0.159.12/30	10.0.159.13 – 10.0.159.14	10.0.159.15
197	10.0.159.16/30	10.0.159.17 – 10.0.159.18	10.0.159.19
198	10.0.159.20/30	10.0.159.21 – 10.0.159.22	10.0.159.23
199	10.0.159.24/30	10.0.159.25 – 10.0.159.26	10.0.159.27
200	10.0.159.28/30	10.0.159.29 – 10.0.159.30	10.0.159.31
201	10.0.159.32/30	10.0.159.33 – 10.0.159.34	10.0.159.35
202	10.0.159.36/30	10.0.159.37 – 10.0.159.38	10.0.159.39
203	10.0.159.40/30	10.0.159.41 – 10.0.159.42	10.0.159.43
204	10.0.159.44/30	10.0.159.45 – 10.0.159.46	10.0.159.47
205	10.0.159.48/30	10.0.159.49 – 10.0.159.50	10.0.159.51
206	10.0.159.52/30	10.0.159.53 – 10.0.159.54	10.0.159.55
207	10.0.159.56/30	10.0.159.57 – 10.0.159.58	10.0.159.59
208	10.0.159.60/30	10.0.159.61 – 10.0.159.62	10.0.159.63
209	10.0.159.64/30	10.0.159.65 – 10.0.159.66	10.0.159.67
210	10.0.159.68/30	10.0.159.69 – 10.0.159.70	10.0.159.71
211	10.0.159.72/30	10.0.159.73 – 10.0.159.74	10.0.159.75
212	10.0.159.76/30	10.0.159.77 – 10.0.159.78	10.0.159.79
213	10.0.159.80/30	10.0.159.81 – 10.0.159.82	10.0.159.83
214	10.0.159.84/30	10.0.159.85 – 10.0.159.86	10.0.159.87
215	10.0.159.88/30	10.0.159.89 – 10.0.159.90	10.0.159.91
216	10.0.159.92/30	10.0.159.93 – 10.0.159.94	10.0.159.95
217	10.0.159.96/30	10.0.159.97 – 10.0.159.98	10.0.159.99
218	10.0.159.100/30	10.0.159.101 – 10.0.159.102	10.0.159.103
219	10.0.159.104/30	10.0.159.105 – 10.0.159.106	10.0.159.107
220	10.0.159.108/30	10.0.159.109 – 10.0.159.110	10.0.159.111
221	10.0.159.112/30	10.0.159.113 – 10.0.159.114	10.0.159.115
222	10.0.159.116/30	10.0.159.117 – 10.0.159.118	10.0.159.119
223	10.0.159.120/30	10.0.159.121 – 10.0.159.122	10.0.159.123
224	10.0.159.124/30	10.0.159.125 – 10.0.159.126	10.0.159.127
225	10.0.159.128/30	10.0.159.129 – 10.0.159.130	10.0.159.131
226	10.0.159.132/30	10.0.159.133 – 10.0.159.134	10.0.159.135
227	10.0.159.136/30	10.0.159.137 – 10.0.159.138	10.0.159.139
228	10.0.159.140/30	10.0.159.141 – 10.0.159.142	10.0.159.143
229	10.0.159.144/30	10.0.159.145 – 10.0.159.146	10.0.159.147
230	10.0.159.148/30	10.0.159.149 – 10.0.159.150	10.0.159.151
231	10.0.159.152/30	10.0.159.153 – 10.0.159.154	10.0.159.155
232	10.0.159.156/30	10.0.159.157 – 10.0.159.158	10.0.159.159
233	10.0.159.160/30	10.0.159.161 – 10.0.159.162	10.0.159.163
234	10.0.159.164/30	10.0.159.165 – 10.0.159.166	10.0.159.167
235	10.0.159.168/30	10.0.159.169 – 10.0.159.170	10.0.159.171
236	10.0.159.172/30	10.0.159.173 – 10.0.159.174	10.0.159.175
237	10.0.159.176/30	10.0.159.177 – 10.0.159.178	10.0.159.179
238	10.0.159.180/30	10.0.159.181 – 10.0.159.182	10.0.159.183
239	10.0.159.184/30	10.0.159.185 – 10.0.159.186	10.0.159.187
240	10.0.159.188/30	10.0.159.189 – 10.0.159.190	10.0.159.191
241	10.0.159.192/30	10.0.159.193 – 10.0.159.194	10.0.159.195
242	10.0.159.196/30	10.0.159.197 – 10.0.159.198	10.0.159.199
243	10.0.159.200/30	10.0.159.201 – 10.0.159.202	10.0.159.203
244	10.0.159.204/30	10.0.159.205 – 10.0.159.206	10.0.159.207
245	10.0.159.208/30	10.0.159.209 – 10.0.159.210	10.0.159.211
246	10.0.159.212/30	10.0.159.213 – 10.0.159.214	10.0.159.215
247	10.0.159.216/30	10.0.159.217 – 10.0.159.218	10.0.159.219
248	10.0.159.220/30	10.0.159.221 – 10.0.159.222	10.0.159.223
249	10.0.159.224/30	10.0.159.225 – 10.0.159.226	10.0.159.227
250	10.0.159.228/30	10.0.159.229 – 10.0.159.230	10.0.159.231
251	10.0.159.232/30	10.0.159.233 – 10.0.159.234	10.0.159.235
252	10.0.159.236/30	10.0.159.237 – 10.0.159.238	10.0.159.239
253	10.0.159.240/30	10.0.159.241 – 10.0.159.242	10.0.159.243
254	10.0.159.244/30	10.0.159.245 – 10.0.159.246	10.0.159.247
255	10.0.159.248/30	10.0.159.249 – 10.0.159.250	10.0.159.251
256	10.0.159.252/30	10.0.159.253 – 10.0.159.254	10.0.159.255

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 →