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)10.3.196.0/22

network10.3.196.0/22

broadcast10.3.199.255

first host10.3.196.1

last host10.3.199.254

subnet mask255.255.252.0

wildcard0.0.3.255

addresses1,024

usable hosts1,022

classA

ipcalc 10.3.196.0/22

address00001010.00000011.11000100.00000000

subnet mask11111111.11111111.11111100.00000000

network00001010.00000011.11000100.00000000

broadcast00001010.00000011.11000111.11111111

green = network part, grey = host part

hex0x0a03c400

decimal168018944

reverse dns0.196.3.10.in-addr.arpa

ipv4-mapped::ffff:a03:c400

/22 split into /30 · 256 subnets

close ×

#	network	host range	broadcast
1	10.3.196.0/30	10.3.196.1 – 10.3.196.2	10.3.196.3
2	10.3.196.4/30	10.3.196.5 – 10.3.196.6	10.3.196.7
3	10.3.196.8/30	10.3.196.9 – 10.3.196.10	10.3.196.11
4	10.3.196.12/30	10.3.196.13 – 10.3.196.14	10.3.196.15
5	10.3.196.16/30	10.3.196.17 – 10.3.196.18	10.3.196.19
6	10.3.196.20/30	10.3.196.21 – 10.3.196.22	10.3.196.23
7	10.3.196.24/30	10.3.196.25 – 10.3.196.26	10.3.196.27
8	10.3.196.28/30	10.3.196.29 – 10.3.196.30	10.3.196.31
9	10.3.196.32/30	10.3.196.33 – 10.3.196.34	10.3.196.35
10	10.3.196.36/30	10.3.196.37 – 10.3.196.38	10.3.196.39
11	10.3.196.40/30	10.3.196.41 – 10.3.196.42	10.3.196.43
12	10.3.196.44/30	10.3.196.45 – 10.3.196.46	10.3.196.47
13	10.3.196.48/30	10.3.196.49 – 10.3.196.50	10.3.196.51
14	10.3.196.52/30	10.3.196.53 – 10.3.196.54	10.3.196.55
15	10.3.196.56/30	10.3.196.57 – 10.3.196.58	10.3.196.59
16	10.3.196.60/30	10.3.196.61 – 10.3.196.62	10.3.196.63
17	10.3.196.64/30	10.3.196.65 – 10.3.196.66	10.3.196.67
18	10.3.196.68/30	10.3.196.69 – 10.3.196.70	10.3.196.71
19	10.3.196.72/30	10.3.196.73 – 10.3.196.74	10.3.196.75
20	10.3.196.76/30	10.3.196.77 – 10.3.196.78	10.3.196.79
21	10.3.196.80/30	10.3.196.81 – 10.3.196.82	10.3.196.83
22	10.3.196.84/30	10.3.196.85 – 10.3.196.86	10.3.196.87
23	10.3.196.88/30	10.3.196.89 – 10.3.196.90	10.3.196.91
24	10.3.196.92/30	10.3.196.93 – 10.3.196.94	10.3.196.95
25	10.3.196.96/30	10.3.196.97 – 10.3.196.98	10.3.196.99
26	10.3.196.100/30	10.3.196.101 – 10.3.196.102	10.3.196.103
27	10.3.196.104/30	10.3.196.105 – 10.3.196.106	10.3.196.107
28	10.3.196.108/30	10.3.196.109 – 10.3.196.110	10.3.196.111
29	10.3.196.112/30	10.3.196.113 – 10.3.196.114	10.3.196.115
30	10.3.196.116/30	10.3.196.117 – 10.3.196.118	10.3.196.119
31	10.3.196.120/30	10.3.196.121 – 10.3.196.122	10.3.196.123
32	10.3.196.124/30	10.3.196.125 – 10.3.196.126	10.3.196.127
33	10.3.196.128/30	10.3.196.129 – 10.3.196.130	10.3.196.131
34	10.3.196.132/30	10.3.196.133 – 10.3.196.134	10.3.196.135
35	10.3.196.136/30	10.3.196.137 – 10.3.196.138	10.3.196.139
36	10.3.196.140/30	10.3.196.141 – 10.3.196.142	10.3.196.143
37	10.3.196.144/30	10.3.196.145 – 10.3.196.146	10.3.196.147
38	10.3.196.148/30	10.3.196.149 – 10.3.196.150	10.3.196.151
39	10.3.196.152/30	10.3.196.153 – 10.3.196.154	10.3.196.155
40	10.3.196.156/30	10.3.196.157 – 10.3.196.158	10.3.196.159
41	10.3.196.160/30	10.3.196.161 – 10.3.196.162	10.3.196.163
42	10.3.196.164/30	10.3.196.165 – 10.3.196.166	10.3.196.167
43	10.3.196.168/30	10.3.196.169 – 10.3.196.170	10.3.196.171
44	10.3.196.172/30	10.3.196.173 – 10.3.196.174	10.3.196.175
45	10.3.196.176/30	10.3.196.177 – 10.3.196.178	10.3.196.179
46	10.3.196.180/30	10.3.196.181 – 10.3.196.182	10.3.196.183
47	10.3.196.184/30	10.3.196.185 – 10.3.196.186	10.3.196.187
48	10.3.196.188/30	10.3.196.189 – 10.3.196.190	10.3.196.191
49	10.3.196.192/30	10.3.196.193 – 10.3.196.194	10.3.196.195
50	10.3.196.196/30	10.3.196.197 – 10.3.196.198	10.3.196.199
51	10.3.196.200/30	10.3.196.201 – 10.3.196.202	10.3.196.203
52	10.3.196.204/30	10.3.196.205 – 10.3.196.206	10.3.196.207
53	10.3.196.208/30	10.3.196.209 – 10.3.196.210	10.3.196.211
54	10.3.196.212/30	10.3.196.213 – 10.3.196.214	10.3.196.215
55	10.3.196.216/30	10.3.196.217 – 10.3.196.218	10.3.196.219
56	10.3.196.220/30	10.3.196.221 – 10.3.196.222	10.3.196.223
57	10.3.196.224/30	10.3.196.225 – 10.3.196.226	10.3.196.227
58	10.3.196.228/30	10.3.196.229 – 10.3.196.230	10.3.196.231
59	10.3.196.232/30	10.3.196.233 – 10.3.196.234	10.3.196.235
60	10.3.196.236/30	10.3.196.237 – 10.3.196.238	10.3.196.239
61	10.3.196.240/30	10.3.196.241 – 10.3.196.242	10.3.196.243
62	10.3.196.244/30	10.3.196.245 – 10.3.196.246	10.3.196.247
63	10.3.196.248/30	10.3.196.249 – 10.3.196.250	10.3.196.251
64	10.3.196.252/30	10.3.196.253 – 10.3.196.254	10.3.196.255
65	10.3.197.0/30	10.3.197.1 – 10.3.197.2	10.3.197.3
66	10.3.197.4/30	10.3.197.5 – 10.3.197.6	10.3.197.7
67	10.3.197.8/30	10.3.197.9 – 10.3.197.10	10.3.197.11
68	10.3.197.12/30	10.3.197.13 – 10.3.197.14	10.3.197.15
69	10.3.197.16/30	10.3.197.17 – 10.3.197.18	10.3.197.19
70	10.3.197.20/30	10.3.197.21 – 10.3.197.22	10.3.197.23
71	10.3.197.24/30	10.3.197.25 – 10.3.197.26	10.3.197.27
72	10.3.197.28/30	10.3.197.29 – 10.3.197.30	10.3.197.31
73	10.3.197.32/30	10.3.197.33 – 10.3.197.34	10.3.197.35
74	10.3.197.36/30	10.3.197.37 – 10.3.197.38	10.3.197.39
75	10.3.197.40/30	10.3.197.41 – 10.3.197.42	10.3.197.43
76	10.3.197.44/30	10.3.197.45 – 10.3.197.46	10.3.197.47
77	10.3.197.48/30	10.3.197.49 – 10.3.197.50	10.3.197.51
78	10.3.197.52/30	10.3.197.53 – 10.3.197.54	10.3.197.55
79	10.3.197.56/30	10.3.197.57 – 10.3.197.58	10.3.197.59
80	10.3.197.60/30	10.3.197.61 – 10.3.197.62	10.3.197.63
81	10.3.197.64/30	10.3.197.65 – 10.3.197.66	10.3.197.67
82	10.3.197.68/30	10.3.197.69 – 10.3.197.70	10.3.197.71
83	10.3.197.72/30	10.3.197.73 – 10.3.197.74	10.3.197.75
84	10.3.197.76/30	10.3.197.77 – 10.3.197.78	10.3.197.79
85	10.3.197.80/30	10.3.197.81 – 10.3.197.82	10.3.197.83
86	10.3.197.84/30	10.3.197.85 – 10.3.197.86	10.3.197.87
87	10.3.197.88/30	10.3.197.89 – 10.3.197.90	10.3.197.91
88	10.3.197.92/30	10.3.197.93 – 10.3.197.94	10.3.197.95
89	10.3.197.96/30	10.3.197.97 – 10.3.197.98	10.3.197.99
90	10.3.197.100/30	10.3.197.101 – 10.3.197.102	10.3.197.103
91	10.3.197.104/30	10.3.197.105 – 10.3.197.106	10.3.197.107
92	10.3.197.108/30	10.3.197.109 – 10.3.197.110	10.3.197.111
93	10.3.197.112/30	10.3.197.113 – 10.3.197.114	10.3.197.115
94	10.3.197.116/30	10.3.197.117 – 10.3.197.118	10.3.197.119
95	10.3.197.120/30	10.3.197.121 – 10.3.197.122	10.3.197.123
96	10.3.197.124/30	10.3.197.125 – 10.3.197.126	10.3.197.127
97	10.3.197.128/30	10.3.197.129 – 10.3.197.130	10.3.197.131
98	10.3.197.132/30	10.3.197.133 – 10.3.197.134	10.3.197.135
99	10.3.197.136/30	10.3.197.137 – 10.3.197.138	10.3.197.139
100	10.3.197.140/30	10.3.197.141 – 10.3.197.142	10.3.197.143
101	10.3.197.144/30	10.3.197.145 – 10.3.197.146	10.3.197.147
102	10.3.197.148/30	10.3.197.149 – 10.3.197.150	10.3.197.151
103	10.3.197.152/30	10.3.197.153 – 10.3.197.154	10.3.197.155
104	10.3.197.156/30	10.3.197.157 – 10.3.197.158	10.3.197.159
105	10.3.197.160/30	10.3.197.161 – 10.3.197.162	10.3.197.163
106	10.3.197.164/30	10.3.197.165 – 10.3.197.166	10.3.197.167
107	10.3.197.168/30	10.3.197.169 – 10.3.197.170	10.3.197.171
108	10.3.197.172/30	10.3.197.173 – 10.3.197.174	10.3.197.175
109	10.3.197.176/30	10.3.197.177 – 10.3.197.178	10.3.197.179
110	10.3.197.180/30	10.3.197.181 – 10.3.197.182	10.3.197.183
111	10.3.197.184/30	10.3.197.185 – 10.3.197.186	10.3.197.187
112	10.3.197.188/30	10.3.197.189 – 10.3.197.190	10.3.197.191
113	10.3.197.192/30	10.3.197.193 – 10.3.197.194	10.3.197.195
114	10.3.197.196/30	10.3.197.197 – 10.3.197.198	10.3.197.199
115	10.3.197.200/30	10.3.197.201 – 10.3.197.202	10.3.197.203
116	10.3.197.204/30	10.3.197.205 – 10.3.197.206	10.3.197.207
117	10.3.197.208/30	10.3.197.209 – 10.3.197.210	10.3.197.211
118	10.3.197.212/30	10.3.197.213 – 10.3.197.214	10.3.197.215
119	10.3.197.216/30	10.3.197.217 – 10.3.197.218	10.3.197.219
120	10.3.197.220/30	10.3.197.221 – 10.3.197.222	10.3.197.223
121	10.3.197.224/30	10.3.197.225 – 10.3.197.226	10.3.197.227
122	10.3.197.228/30	10.3.197.229 – 10.3.197.230	10.3.197.231
123	10.3.197.232/30	10.3.197.233 – 10.3.197.234	10.3.197.235
124	10.3.197.236/30	10.3.197.237 – 10.3.197.238	10.3.197.239
125	10.3.197.240/30	10.3.197.241 – 10.3.197.242	10.3.197.243
126	10.3.197.244/30	10.3.197.245 – 10.3.197.246	10.3.197.247
127	10.3.197.248/30	10.3.197.249 – 10.3.197.250	10.3.197.251
128	10.3.197.252/30	10.3.197.253 – 10.3.197.254	10.3.197.255
129	10.3.198.0/30	10.3.198.1 – 10.3.198.2	10.3.198.3
130	10.3.198.4/30	10.3.198.5 – 10.3.198.6	10.3.198.7
131	10.3.198.8/30	10.3.198.9 – 10.3.198.10	10.3.198.11
132	10.3.198.12/30	10.3.198.13 – 10.3.198.14	10.3.198.15
133	10.3.198.16/30	10.3.198.17 – 10.3.198.18	10.3.198.19
134	10.3.198.20/30	10.3.198.21 – 10.3.198.22	10.3.198.23
135	10.3.198.24/30	10.3.198.25 – 10.3.198.26	10.3.198.27
136	10.3.198.28/30	10.3.198.29 – 10.3.198.30	10.3.198.31
137	10.3.198.32/30	10.3.198.33 – 10.3.198.34	10.3.198.35
138	10.3.198.36/30	10.3.198.37 – 10.3.198.38	10.3.198.39
139	10.3.198.40/30	10.3.198.41 – 10.3.198.42	10.3.198.43
140	10.3.198.44/30	10.3.198.45 – 10.3.198.46	10.3.198.47
141	10.3.198.48/30	10.3.198.49 – 10.3.198.50	10.3.198.51
142	10.3.198.52/30	10.3.198.53 – 10.3.198.54	10.3.198.55
143	10.3.198.56/30	10.3.198.57 – 10.3.198.58	10.3.198.59
144	10.3.198.60/30	10.3.198.61 – 10.3.198.62	10.3.198.63
145	10.3.198.64/30	10.3.198.65 – 10.3.198.66	10.3.198.67
146	10.3.198.68/30	10.3.198.69 – 10.3.198.70	10.3.198.71
147	10.3.198.72/30	10.3.198.73 – 10.3.198.74	10.3.198.75
148	10.3.198.76/30	10.3.198.77 – 10.3.198.78	10.3.198.79
149	10.3.198.80/30	10.3.198.81 – 10.3.198.82	10.3.198.83
150	10.3.198.84/30	10.3.198.85 – 10.3.198.86	10.3.198.87
151	10.3.198.88/30	10.3.198.89 – 10.3.198.90	10.3.198.91
152	10.3.198.92/30	10.3.198.93 – 10.3.198.94	10.3.198.95
153	10.3.198.96/30	10.3.198.97 – 10.3.198.98	10.3.198.99
154	10.3.198.100/30	10.3.198.101 – 10.3.198.102	10.3.198.103
155	10.3.198.104/30	10.3.198.105 – 10.3.198.106	10.3.198.107
156	10.3.198.108/30	10.3.198.109 – 10.3.198.110	10.3.198.111
157	10.3.198.112/30	10.3.198.113 – 10.3.198.114	10.3.198.115
158	10.3.198.116/30	10.3.198.117 – 10.3.198.118	10.3.198.119
159	10.3.198.120/30	10.3.198.121 – 10.3.198.122	10.3.198.123
160	10.3.198.124/30	10.3.198.125 – 10.3.198.126	10.3.198.127
161	10.3.198.128/30	10.3.198.129 – 10.3.198.130	10.3.198.131
162	10.3.198.132/30	10.3.198.133 – 10.3.198.134	10.3.198.135
163	10.3.198.136/30	10.3.198.137 – 10.3.198.138	10.3.198.139
164	10.3.198.140/30	10.3.198.141 – 10.3.198.142	10.3.198.143
165	10.3.198.144/30	10.3.198.145 – 10.3.198.146	10.3.198.147
166	10.3.198.148/30	10.3.198.149 – 10.3.198.150	10.3.198.151
167	10.3.198.152/30	10.3.198.153 – 10.3.198.154	10.3.198.155
168	10.3.198.156/30	10.3.198.157 – 10.3.198.158	10.3.198.159
169	10.3.198.160/30	10.3.198.161 – 10.3.198.162	10.3.198.163
170	10.3.198.164/30	10.3.198.165 – 10.3.198.166	10.3.198.167
171	10.3.198.168/30	10.3.198.169 – 10.3.198.170	10.3.198.171
172	10.3.198.172/30	10.3.198.173 – 10.3.198.174	10.3.198.175
173	10.3.198.176/30	10.3.198.177 – 10.3.198.178	10.3.198.179
174	10.3.198.180/30	10.3.198.181 – 10.3.198.182	10.3.198.183
175	10.3.198.184/30	10.3.198.185 – 10.3.198.186	10.3.198.187
176	10.3.198.188/30	10.3.198.189 – 10.3.198.190	10.3.198.191
177	10.3.198.192/30	10.3.198.193 – 10.3.198.194	10.3.198.195
178	10.3.198.196/30	10.3.198.197 – 10.3.198.198	10.3.198.199
179	10.3.198.200/30	10.3.198.201 – 10.3.198.202	10.3.198.203
180	10.3.198.204/30	10.3.198.205 – 10.3.198.206	10.3.198.207
181	10.3.198.208/30	10.3.198.209 – 10.3.198.210	10.3.198.211
182	10.3.198.212/30	10.3.198.213 – 10.3.198.214	10.3.198.215
183	10.3.198.216/30	10.3.198.217 – 10.3.198.218	10.3.198.219
184	10.3.198.220/30	10.3.198.221 – 10.3.198.222	10.3.198.223
185	10.3.198.224/30	10.3.198.225 – 10.3.198.226	10.3.198.227
186	10.3.198.228/30	10.3.198.229 – 10.3.198.230	10.3.198.231
187	10.3.198.232/30	10.3.198.233 – 10.3.198.234	10.3.198.235
188	10.3.198.236/30	10.3.198.237 – 10.3.198.238	10.3.198.239
189	10.3.198.240/30	10.3.198.241 – 10.3.198.242	10.3.198.243
190	10.3.198.244/30	10.3.198.245 – 10.3.198.246	10.3.198.247
191	10.3.198.248/30	10.3.198.249 – 10.3.198.250	10.3.198.251
192	10.3.198.252/30	10.3.198.253 – 10.3.198.254	10.3.198.255
193	10.3.199.0/30	10.3.199.1 – 10.3.199.2	10.3.199.3
194	10.3.199.4/30	10.3.199.5 – 10.3.199.6	10.3.199.7
195	10.3.199.8/30	10.3.199.9 – 10.3.199.10	10.3.199.11
196	10.3.199.12/30	10.3.199.13 – 10.3.199.14	10.3.199.15
197	10.3.199.16/30	10.3.199.17 – 10.3.199.18	10.3.199.19
198	10.3.199.20/30	10.3.199.21 – 10.3.199.22	10.3.199.23
199	10.3.199.24/30	10.3.199.25 – 10.3.199.26	10.3.199.27
200	10.3.199.28/30	10.3.199.29 – 10.3.199.30	10.3.199.31
201	10.3.199.32/30	10.3.199.33 – 10.3.199.34	10.3.199.35
202	10.3.199.36/30	10.3.199.37 – 10.3.199.38	10.3.199.39
203	10.3.199.40/30	10.3.199.41 – 10.3.199.42	10.3.199.43
204	10.3.199.44/30	10.3.199.45 – 10.3.199.46	10.3.199.47
205	10.3.199.48/30	10.3.199.49 – 10.3.199.50	10.3.199.51
206	10.3.199.52/30	10.3.199.53 – 10.3.199.54	10.3.199.55
207	10.3.199.56/30	10.3.199.57 – 10.3.199.58	10.3.199.59
208	10.3.199.60/30	10.3.199.61 – 10.3.199.62	10.3.199.63
209	10.3.199.64/30	10.3.199.65 – 10.3.199.66	10.3.199.67
210	10.3.199.68/30	10.3.199.69 – 10.3.199.70	10.3.199.71
211	10.3.199.72/30	10.3.199.73 – 10.3.199.74	10.3.199.75
212	10.3.199.76/30	10.3.199.77 – 10.3.199.78	10.3.199.79
213	10.3.199.80/30	10.3.199.81 – 10.3.199.82	10.3.199.83
214	10.3.199.84/30	10.3.199.85 – 10.3.199.86	10.3.199.87
215	10.3.199.88/30	10.3.199.89 – 10.3.199.90	10.3.199.91
216	10.3.199.92/30	10.3.199.93 – 10.3.199.94	10.3.199.95
217	10.3.199.96/30	10.3.199.97 – 10.3.199.98	10.3.199.99
218	10.3.199.100/30	10.3.199.101 – 10.3.199.102	10.3.199.103
219	10.3.199.104/30	10.3.199.105 – 10.3.199.106	10.3.199.107
220	10.3.199.108/30	10.3.199.109 – 10.3.199.110	10.3.199.111
221	10.3.199.112/30	10.3.199.113 – 10.3.199.114	10.3.199.115
222	10.3.199.116/30	10.3.199.117 – 10.3.199.118	10.3.199.119
223	10.3.199.120/30	10.3.199.121 – 10.3.199.122	10.3.199.123
224	10.3.199.124/30	10.3.199.125 – 10.3.199.126	10.3.199.127
225	10.3.199.128/30	10.3.199.129 – 10.3.199.130	10.3.199.131
226	10.3.199.132/30	10.3.199.133 – 10.3.199.134	10.3.199.135
227	10.3.199.136/30	10.3.199.137 – 10.3.199.138	10.3.199.139
228	10.3.199.140/30	10.3.199.141 – 10.3.199.142	10.3.199.143
229	10.3.199.144/30	10.3.199.145 – 10.3.199.146	10.3.199.147
230	10.3.199.148/30	10.3.199.149 – 10.3.199.150	10.3.199.151
231	10.3.199.152/30	10.3.199.153 – 10.3.199.154	10.3.199.155
232	10.3.199.156/30	10.3.199.157 – 10.3.199.158	10.3.199.159
233	10.3.199.160/30	10.3.199.161 – 10.3.199.162	10.3.199.163
234	10.3.199.164/30	10.3.199.165 – 10.3.199.166	10.3.199.167
235	10.3.199.168/30	10.3.199.169 – 10.3.199.170	10.3.199.171
236	10.3.199.172/30	10.3.199.173 – 10.3.199.174	10.3.199.175
237	10.3.199.176/30	10.3.199.177 – 10.3.199.178	10.3.199.179
238	10.3.199.180/30	10.3.199.181 – 10.3.199.182	10.3.199.183
239	10.3.199.184/30	10.3.199.185 – 10.3.199.186	10.3.199.187
240	10.3.199.188/30	10.3.199.189 – 10.3.199.190	10.3.199.191
241	10.3.199.192/30	10.3.199.193 – 10.3.199.194	10.3.199.195
242	10.3.199.196/30	10.3.199.197 – 10.3.199.198	10.3.199.199
243	10.3.199.200/30	10.3.199.201 – 10.3.199.202	10.3.199.203
244	10.3.199.204/30	10.3.199.205 – 10.3.199.206	10.3.199.207
245	10.3.199.208/30	10.3.199.209 – 10.3.199.210	10.3.199.211
246	10.3.199.212/30	10.3.199.213 – 10.3.199.214	10.3.199.215
247	10.3.199.216/30	10.3.199.217 – 10.3.199.218	10.3.199.219
248	10.3.199.220/30	10.3.199.221 – 10.3.199.222	10.3.199.223
249	10.3.199.224/30	10.3.199.225 – 10.3.199.226	10.3.199.227
250	10.3.199.228/30	10.3.199.229 – 10.3.199.230	10.3.199.231
251	10.3.199.232/30	10.3.199.233 – 10.3.199.234	10.3.199.235
252	10.3.199.236/30	10.3.199.237 – 10.3.199.238	10.3.199.239
253	10.3.199.240/30	10.3.199.241 – 10.3.199.242	10.3.199.243
254	10.3.199.244/30	10.3.199.245 – 10.3.199.246	10.3.199.247
255	10.3.199.248/30	10.3.199.249 – 10.3.199.250	10.3.199.251
256	10.3.199.252/30	10.3.199.253 – 10.3.199.254	10.3.199.255

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 →