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)10.2.116.0/22

network10.2.116.0/22

broadcast10.2.119.255

first host10.2.116.1

last host10.2.119.254

subnet mask255.255.252.0

wildcard0.0.3.255

addresses1,024

usable hosts1,022

classA

ipcalc 10.2.116.0/22

address00001010.00000010.01110100.00000000

subnet mask11111111.11111111.11111100.00000000

network00001010.00000010.01110100.00000000

broadcast00001010.00000010.01110111.11111111

green = network part, grey = host part

hex0x0a027400

decimal167932928

reverse dns0.116.2.10.in-addr.arpa

ipv4-mapped::ffff:a02:7400

/22 split into /30 · 256 subnets

close ×

#	network	host range	broadcast
1	10.2.116.0/30	10.2.116.1 – 10.2.116.2	10.2.116.3
2	10.2.116.4/30	10.2.116.5 – 10.2.116.6	10.2.116.7
3	10.2.116.8/30	10.2.116.9 – 10.2.116.10	10.2.116.11
4	10.2.116.12/30	10.2.116.13 – 10.2.116.14	10.2.116.15
5	10.2.116.16/30	10.2.116.17 – 10.2.116.18	10.2.116.19
6	10.2.116.20/30	10.2.116.21 – 10.2.116.22	10.2.116.23
7	10.2.116.24/30	10.2.116.25 – 10.2.116.26	10.2.116.27
8	10.2.116.28/30	10.2.116.29 – 10.2.116.30	10.2.116.31
9	10.2.116.32/30	10.2.116.33 – 10.2.116.34	10.2.116.35
10	10.2.116.36/30	10.2.116.37 – 10.2.116.38	10.2.116.39
11	10.2.116.40/30	10.2.116.41 – 10.2.116.42	10.2.116.43
12	10.2.116.44/30	10.2.116.45 – 10.2.116.46	10.2.116.47
13	10.2.116.48/30	10.2.116.49 – 10.2.116.50	10.2.116.51
14	10.2.116.52/30	10.2.116.53 – 10.2.116.54	10.2.116.55
15	10.2.116.56/30	10.2.116.57 – 10.2.116.58	10.2.116.59
16	10.2.116.60/30	10.2.116.61 – 10.2.116.62	10.2.116.63
17	10.2.116.64/30	10.2.116.65 – 10.2.116.66	10.2.116.67
18	10.2.116.68/30	10.2.116.69 – 10.2.116.70	10.2.116.71
19	10.2.116.72/30	10.2.116.73 – 10.2.116.74	10.2.116.75
20	10.2.116.76/30	10.2.116.77 – 10.2.116.78	10.2.116.79
21	10.2.116.80/30	10.2.116.81 – 10.2.116.82	10.2.116.83
22	10.2.116.84/30	10.2.116.85 – 10.2.116.86	10.2.116.87
23	10.2.116.88/30	10.2.116.89 – 10.2.116.90	10.2.116.91
24	10.2.116.92/30	10.2.116.93 – 10.2.116.94	10.2.116.95
25	10.2.116.96/30	10.2.116.97 – 10.2.116.98	10.2.116.99
26	10.2.116.100/30	10.2.116.101 – 10.2.116.102	10.2.116.103
27	10.2.116.104/30	10.2.116.105 – 10.2.116.106	10.2.116.107
28	10.2.116.108/30	10.2.116.109 – 10.2.116.110	10.2.116.111
29	10.2.116.112/30	10.2.116.113 – 10.2.116.114	10.2.116.115
30	10.2.116.116/30	10.2.116.117 – 10.2.116.118	10.2.116.119
31	10.2.116.120/30	10.2.116.121 – 10.2.116.122	10.2.116.123
32	10.2.116.124/30	10.2.116.125 – 10.2.116.126	10.2.116.127
33	10.2.116.128/30	10.2.116.129 – 10.2.116.130	10.2.116.131
34	10.2.116.132/30	10.2.116.133 – 10.2.116.134	10.2.116.135
35	10.2.116.136/30	10.2.116.137 – 10.2.116.138	10.2.116.139
36	10.2.116.140/30	10.2.116.141 – 10.2.116.142	10.2.116.143
37	10.2.116.144/30	10.2.116.145 – 10.2.116.146	10.2.116.147
38	10.2.116.148/30	10.2.116.149 – 10.2.116.150	10.2.116.151
39	10.2.116.152/30	10.2.116.153 – 10.2.116.154	10.2.116.155
40	10.2.116.156/30	10.2.116.157 – 10.2.116.158	10.2.116.159
41	10.2.116.160/30	10.2.116.161 – 10.2.116.162	10.2.116.163
42	10.2.116.164/30	10.2.116.165 – 10.2.116.166	10.2.116.167
43	10.2.116.168/30	10.2.116.169 – 10.2.116.170	10.2.116.171
44	10.2.116.172/30	10.2.116.173 – 10.2.116.174	10.2.116.175
45	10.2.116.176/30	10.2.116.177 – 10.2.116.178	10.2.116.179
46	10.2.116.180/30	10.2.116.181 – 10.2.116.182	10.2.116.183
47	10.2.116.184/30	10.2.116.185 – 10.2.116.186	10.2.116.187
48	10.2.116.188/30	10.2.116.189 – 10.2.116.190	10.2.116.191
49	10.2.116.192/30	10.2.116.193 – 10.2.116.194	10.2.116.195
50	10.2.116.196/30	10.2.116.197 – 10.2.116.198	10.2.116.199
51	10.2.116.200/30	10.2.116.201 – 10.2.116.202	10.2.116.203
52	10.2.116.204/30	10.2.116.205 – 10.2.116.206	10.2.116.207
53	10.2.116.208/30	10.2.116.209 – 10.2.116.210	10.2.116.211
54	10.2.116.212/30	10.2.116.213 – 10.2.116.214	10.2.116.215
55	10.2.116.216/30	10.2.116.217 – 10.2.116.218	10.2.116.219
56	10.2.116.220/30	10.2.116.221 – 10.2.116.222	10.2.116.223
57	10.2.116.224/30	10.2.116.225 – 10.2.116.226	10.2.116.227
58	10.2.116.228/30	10.2.116.229 – 10.2.116.230	10.2.116.231
59	10.2.116.232/30	10.2.116.233 – 10.2.116.234	10.2.116.235
60	10.2.116.236/30	10.2.116.237 – 10.2.116.238	10.2.116.239
61	10.2.116.240/30	10.2.116.241 – 10.2.116.242	10.2.116.243
62	10.2.116.244/30	10.2.116.245 – 10.2.116.246	10.2.116.247
63	10.2.116.248/30	10.2.116.249 – 10.2.116.250	10.2.116.251
64	10.2.116.252/30	10.2.116.253 – 10.2.116.254	10.2.116.255
65	10.2.117.0/30	10.2.117.1 – 10.2.117.2	10.2.117.3
66	10.2.117.4/30	10.2.117.5 – 10.2.117.6	10.2.117.7
67	10.2.117.8/30	10.2.117.9 – 10.2.117.10	10.2.117.11
68	10.2.117.12/30	10.2.117.13 – 10.2.117.14	10.2.117.15
69	10.2.117.16/30	10.2.117.17 – 10.2.117.18	10.2.117.19
70	10.2.117.20/30	10.2.117.21 – 10.2.117.22	10.2.117.23
71	10.2.117.24/30	10.2.117.25 – 10.2.117.26	10.2.117.27
72	10.2.117.28/30	10.2.117.29 – 10.2.117.30	10.2.117.31
73	10.2.117.32/30	10.2.117.33 – 10.2.117.34	10.2.117.35
74	10.2.117.36/30	10.2.117.37 – 10.2.117.38	10.2.117.39
75	10.2.117.40/30	10.2.117.41 – 10.2.117.42	10.2.117.43
76	10.2.117.44/30	10.2.117.45 – 10.2.117.46	10.2.117.47
77	10.2.117.48/30	10.2.117.49 – 10.2.117.50	10.2.117.51
78	10.2.117.52/30	10.2.117.53 – 10.2.117.54	10.2.117.55
79	10.2.117.56/30	10.2.117.57 – 10.2.117.58	10.2.117.59
80	10.2.117.60/30	10.2.117.61 – 10.2.117.62	10.2.117.63
81	10.2.117.64/30	10.2.117.65 – 10.2.117.66	10.2.117.67
82	10.2.117.68/30	10.2.117.69 – 10.2.117.70	10.2.117.71
83	10.2.117.72/30	10.2.117.73 – 10.2.117.74	10.2.117.75
84	10.2.117.76/30	10.2.117.77 – 10.2.117.78	10.2.117.79
85	10.2.117.80/30	10.2.117.81 – 10.2.117.82	10.2.117.83
86	10.2.117.84/30	10.2.117.85 – 10.2.117.86	10.2.117.87
87	10.2.117.88/30	10.2.117.89 – 10.2.117.90	10.2.117.91
88	10.2.117.92/30	10.2.117.93 – 10.2.117.94	10.2.117.95
89	10.2.117.96/30	10.2.117.97 – 10.2.117.98	10.2.117.99
90	10.2.117.100/30	10.2.117.101 – 10.2.117.102	10.2.117.103
91	10.2.117.104/30	10.2.117.105 – 10.2.117.106	10.2.117.107
92	10.2.117.108/30	10.2.117.109 – 10.2.117.110	10.2.117.111
93	10.2.117.112/30	10.2.117.113 – 10.2.117.114	10.2.117.115
94	10.2.117.116/30	10.2.117.117 – 10.2.117.118	10.2.117.119
95	10.2.117.120/30	10.2.117.121 – 10.2.117.122	10.2.117.123
96	10.2.117.124/30	10.2.117.125 – 10.2.117.126	10.2.117.127
97	10.2.117.128/30	10.2.117.129 – 10.2.117.130	10.2.117.131
98	10.2.117.132/30	10.2.117.133 – 10.2.117.134	10.2.117.135
99	10.2.117.136/30	10.2.117.137 – 10.2.117.138	10.2.117.139
100	10.2.117.140/30	10.2.117.141 – 10.2.117.142	10.2.117.143
101	10.2.117.144/30	10.2.117.145 – 10.2.117.146	10.2.117.147
102	10.2.117.148/30	10.2.117.149 – 10.2.117.150	10.2.117.151
103	10.2.117.152/30	10.2.117.153 – 10.2.117.154	10.2.117.155
104	10.2.117.156/30	10.2.117.157 – 10.2.117.158	10.2.117.159
105	10.2.117.160/30	10.2.117.161 – 10.2.117.162	10.2.117.163
106	10.2.117.164/30	10.2.117.165 – 10.2.117.166	10.2.117.167
107	10.2.117.168/30	10.2.117.169 – 10.2.117.170	10.2.117.171
108	10.2.117.172/30	10.2.117.173 – 10.2.117.174	10.2.117.175
109	10.2.117.176/30	10.2.117.177 – 10.2.117.178	10.2.117.179
110	10.2.117.180/30	10.2.117.181 – 10.2.117.182	10.2.117.183
111	10.2.117.184/30	10.2.117.185 – 10.2.117.186	10.2.117.187
112	10.2.117.188/30	10.2.117.189 – 10.2.117.190	10.2.117.191
113	10.2.117.192/30	10.2.117.193 – 10.2.117.194	10.2.117.195
114	10.2.117.196/30	10.2.117.197 – 10.2.117.198	10.2.117.199
115	10.2.117.200/30	10.2.117.201 – 10.2.117.202	10.2.117.203
116	10.2.117.204/30	10.2.117.205 – 10.2.117.206	10.2.117.207
117	10.2.117.208/30	10.2.117.209 – 10.2.117.210	10.2.117.211
118	10.2.117.212/30	10.2.117.213 – 10.2.117.214	10.2.117.215
119	10.2.117.216/30	10.2.117.217 – 10.2.117.218	10.2.117.219
120	10.2.117.220/30	10.2.117.221 – 10.2.117.222	10.2.117.223
121	10.2.117.224/30	10.2.117.225 – 10.2.117.226	10.2.117.227
122	10.2.117.228/30	10.2.117.229 – 10.2.117.230	10.2.117.231
123	10.2.117.232/30	10.2.117.233 – 10.2.117.234	10.2.117.235
124	10.2.117.236/30	10.2.117.237 – 10.2.117.238	10.2.117.239
125	10.2.117.240/30	10.2.117.241 – 10.2.117.242	10.2.117.243
126	10.2.117.244/30	10.2.117.245 – 10.2.117.246	10.2.117.247
127	10.2.117.248/30	10.2.117.249 – 10.2.117.250	10.2.117.251
128	10.2.117.252/30	10.2.117.253 – 10.2.117.254	10.2.117.255
129	10.2.118.0/30	10.2.118.1 – 10.2.118.2	10.2.118.3
130	10.2.118.4/30	10.2.118.5 – 10.2.118.6	10.2.118.7
131	10.2.118.8/30	10.2.118.9 – 10.2.118.10	10.2.118.11
132	10.2.118.12/30	10.2.118.13 – 10.2.118.14	10.2.118.15
133	10.2.118.16/30	10.2.118.17 – 10.2.118.18	10.2.118.19
134	10.2.118.20/30	10.2.118.21 – 10.2.118.22	10.2.118.23
135	10.2.118.24/30	10.2.118.25 – 10.2.118.26	10.2.118.27
136	10.2.118.28/30	10.2.118.29 – 10.2.118.30	10.2.118.31
137	10.2.118.32/30	10.2.118.33 – 10.2.118.34	10.2.118.35
138	10.2.118.36/30	10.2.118.37 – 10.2.118.38	10.2.118.39
139	10.2.118.40/30	10.2.118.41 – 10.2.118.42	10.2.118.43
140	10.2.118.44/30	10.2.118.45 – 10.2.118.46	10.2.118.47
141	10.2.118.48/30	10.2.118.49 – 10.2.118.50	10.2.118.51
142	10.2.118.52/30	10.2.118.53 – 10.2.118.54	10.2.118.55
143	10.2.118.56/30	10.2.118.57 – 10.2.118.58	10.2.118.59
144	10.2.118.60/30	10.2.118.61 – 10.2.118.62	10.2.118.63
145	10.2.118.64/30	10.2.118.65 – 10.2.118.66	10.2.118.67
146	10.2.118.68/30	10.2.118.69 – 10.2.118.70	10.2.118.71
147	10.2.118.72/30	10.2.118.73 – 10.2.118.74	10.2.118.75
148	10.2.118.76/30	10.2.118.77 – 10.2.118.78	10.2.118.79
149	10.2.118.80/30	10.2.118.81 – 10.2.118.82	10.2.118.83
150	10.2.118.84/30	10.2.118.85 – 10.2.118.86	10.2.118.87
151	10.2.118.88/30	10.2.118.89 – 10.2.118.90	10.2.118.91
152	10.2.118.92/30	10.2.118.93 – 10.2.118.94	10.2.118.95
153	10.2.118.96/30	10.2.118.97 – 10.2.118.98	10.2.118.99
154	10.2.118.100/30	10.2.118.101 – 10.2.118.102	10.2.118.103
155	10.2.118.104/30	10.2.118.105 – 10.2.118.106	10.2.118.107
156	10.2.118.108/30	10.2.118.109 – 10.2.118.110	10.2.118.111
157	10.2.118.112/30	10.2.118.113 – 10.2.118.114	10.2.118.115
158	10.2.118.116/30	10.2.118.117 – 10.2.118.118	10.2.118.119
159	10.2.118.120/30	10.2.118.121 – 10.2.118.122	10.2.118.123
160	10.2.118.124/30	10.2.118.125 – 10.2.118.126	10.2.118.127
161	10.2.118.128/30	10.2.118.129 – 10.2.118.130	10.2.118.131
162	10.2.118.132/30	10.2.118.133 – 10.2.118.134	10.2.118.135
163	10.2.118.136/30	10.2.118.137 – 10.2.118.138	10.2.118.139
164	10.2.118.140/30	10.2.118.141 – 10.2.118.142	10.2.118.143
165	10.2.118.144/30	10.2.118.145 – 10.2.118.146	10.2.118.147
166	10.2.118.148/30	10.2.118.149 – 10.2.118.150	10.2.118.151
167	10.2.118.152/30	10.2.118.153 – 10.2.118.154	10.2.118.155
168	10.2.118.156/30	10.2.118.157 – 10.2.118.158	10.2.118.159
169	10.2.118.160/30	10.2.118.161 – 10.2.118.162	10.2.118.163
170	10.2.118.164/30	10.2.118.165 – 10.2.118.166	10.2.118.167
171	10.2.118.168/30	10.2.118.169 – 10.2.118.170	10.2.118.171
172	10.2.118.172/30	10.2.118.173 – 10.2.118.174	10.2.118.175
173	10.2.118.176/30	10.2.118.177 – 10.2.118.178	10.2.118.179
174	10.2.118.180/30	10.2.118.181 – 10.2.118.182	10.2.118.183
175	10.2.118.184/30	10.2.118.185 – 10.2.118.186	10.2.118.187
176	10.2.118.188/30	10.2.118.189 – 10.2.118.190	10.2.118.191
177	10.2.118.192/30	10.2.118.193 – 10.2.118.194	10.2.118.195
178	10.2.118.196/30	10.2.118.197 – 10.2.118.198	10.2.118.199
179	10.2.118.200/30	10.2.118.201 – 10.2.118.202	10.2.118.203
180	10.2.118.204/30	10.2.118.205 – 10.2.118.206	10.2.118.207
181	10.2.118.208/30	10.2.118.209 – 10.2.118.210	10.2.118.211
182	10.2.118.212/30	10.2.118.213 – 10.2.118.214	10.2.118.215
183	10.2.118.216/30	10.2.118.217 – 10.2.118.218	10.2.118.219
184	10.2.118.220/30	10.2.118.221 – 10.2.118.222	10.2.118.223
185	10.2.118.224/30	10.2.118.225 – 10.2.118.226	10.2.118.227
186	10.2.118.228/30	10.2.118.229 – 10.2.118.230	10.2.118.231
187	10.2.118.232/30	10.2.118.233 – 10.2.118.234	10.2.118.235
188	10.2.118.236/30	10.2.118.237 – 10.2.118.238	10.2.118.239
189	10.2.118.240/30	10.2.118.241 – 10.2.118.242	10.2.118.243
190	10.2.118.244/30	10.2.118.245 – 10.2.118.246	10.2.118.247
191	10.2.118.248/30	10.2.118.249 – 10.2.118.250	10.2.118.251
192	10.2.118.252/30	10.2.118.253 – 10.2.118.254	10.2.118.255
193	10.2.119.0/30	10.2.119.1 – 10.2.119.2	10.2.119.3
194	10.2.119.4/30	10.2.119.5 – 10.2.119.6	10.2.119.7
195	10.2.119.8/30	10.2.119.9 – 10.2.119.10	10.2.119.11
196	10.2.119.12/30	10.2.119.13 – 10.2.119.14	10.2.119.15
197	10.2.119.16/30	10.2.119.17 – 10.2.119.18	10.2.119.19
198	10.2.119.20/30	10.2.119.21 – 10.2.119.22	10.2.119.23
199	10.2.119.24/30	10.2.119.25 – 10.2.119.26	10.2.119.27
200	10.2.119.28/30	10.2.119.29 – 10.2.119.30	10.2.119.31
201	10.2.119.32/30	10.2.119.33 – 10.2.119.34	10.2.119.35
202	10.2.119.36/30	10.2.119.37 – 10.2.119.38	10.2.119.39
203	10.2.119.40/30	10.2.119.41 – 10.2.119.42	10.2.119.43
204	10.2.119.44/30	10.2.119.45 – 10.2.119.46	10.2.119.47
205	10.2.119.48/30	10.2.119.49 – 10.2.119.50	10.2.119.51
206	10.2.119.52/30	10.2.119.53 – 10.2.119.54	10.2.119.55
207	10.2.119.56/30	10.2.119.57 – 10.2.119.58	10.2.119.59
208	10.2.119.60/30	10.2.119.61 – 10.2.119.62	10.2.119.63
209	10.2.119.64/30	10.2.119.65 – 10.2.119.66	10.2.119.67
210	10.2.119.68/30	10.2.119.69 – 10.2.119.70	10.2.119.71
211	10.2.119.72/30	10.2.119.73 – 10.2.119.74	10.2.119.75
212	10.2.119.76/30	10.2.119.77 – 10.2.119.78	10.2.119.79
213	10.2.119.80/30	10.2.119.81 – 10.2.119.82	10.2.119.83
214	10.2.119.84/30	10.2.119.85 – 10.2.119.86	10.2.119.87
215	10.2.119.88/30	10.2.119.89 – 10.2.119.90	10.2.119.91
216	10.2.119.92/30	10.2.119.93 – 10.2.119.94	10.2.119.95
217	10.2.119.96/30	10.2.119.97 – 10.2.119.98	10.2.119.99
218	10.2.119.100/30	10.2.119.101 – 10.2.119.102	10.2.119.103
219	10.2.119.104/30	10.2.119.105 – 10.2.119.106	10.2.119.107
220	10.2.119.108/30	10.2.119.109 – 10.2.119.110	10.2.119.111
221	10.2.119.112/30	10.2.119.113 – 10.2.119.114	10.2.119.115
222	10.2.119.116/30	10.2.119.117 – 10.2.119.118	10.2.119.119
223	10.2.119.120/30	10.2.119.121 – 10.2.119.122	10.2.119.123
224	10.2.119.124/30	10.2.119.125 – 10.2.119.126	10.2.119.127
225	10.2.119.128/30	10.2.119.129 – 10.2.119.130	10.2.119.131
226	10.2.119.132/30	10.2.119.133 – 10.2.119.134	10.2.119.135
227	10.2.119.136/30	10.2.119.137 – 10.2.119.138	10.2.119.139
228	10.2.119.140/30	10.2.119.141 – 10.2.119.142	10.2.119.143
229	10.2.119.144/30	10.2.119.145 – 10.2.119.146	10.2.119.147
230	10.2.119.148/30	10.2.119.149 – 10.2.119.150	10.2.119.151
231	10.2.119.152/30	10.2.119.153 – 10.2.119.154	10.2.119.155
232	10.2.119.156/30	10.2.119.157 – 10.2.119.158	10.2.119.159
233	10.2.119.160/30	10.2.119.161 – 10.2.119.162	10.2.119.163
234	10.2.119.164/30	10.2.119.165 – 10.2.119.166	10.2.119.167
235	10.2.119.168/30	10.2.119.169 – 10.2.119.170	10.2.119.171
236	10.2.119.172/30	10.2.119.173 – 10.2.119.174	10.2.119.175
237	10.2.119.176/30	10.2.119.177 – 10.2.119.178	10.2.119.179
238	10.2.119.180/30	10.2.119.181 – 10.2.119.182	10.2.119.183
239	10.2.119.184/30	10.2.119.185 – 10.2.119.186	10.2.119.187
240	10.2.119.188/30	10.2.119.189 – 10.2.119.190	10.2.119.191
241	10.2.119.192/30	10.2.119.193 – 10.2.119.194	10.2.119.195
242	10.2.119.196/30	10.2.119.197 – 10.2.119.198	10.2.119.199
243	10.2.119.200/30	10.2.119.201 – 10.2.119.202	10.2.119.203
244	10.2.119.204/30	10.2.119.205 – 10.2.119.206	10.2.119.207
245	10.2.119.208/30	10.2.119.209 – 10.2.119.210	10.2.119.211
246	10.2.119.212/30	10.2.119.213 – 10.2.119.214	10.2.119.215
247	10.2.119.216/30	10.2.119.217 – 10.2.119.218	10.2.119.219
248	10.2.119.220/30	10.2.119.221 – 10.2.119.222	10.2.119.223
249	10.2.119.224/30	10.2.119.225 – 10.2.119.226	10.2.119.227
250	10.2.119.228/30	10.2.119.229 – 10.2.119.230	10.2.119.231
251	10.2.119.232/30	10.2.119.233 – 10.2.119.234	10.2.119.235
252	10.2.119.236/30	10.2.119.237 – 10.2.119.238	10.2.119.239
253	10.2.119.240/30	10.2.119.241 – 10.2.119.242	10.2.119.243
254	10.2.119.244/30	10.2.119.245 – 10.2.119.246	10.2.119.247
255	10.2.119.248/30	10.2.119.249 – 10.2.119.250	10.2.119.251
256	10.2.119.252/30	10.2.119.253 – 10.2.119.254	10.2.119.255

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 →