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)10.2.92.0/22

network10.2.92.0/22

broadcast10.2.95.255

first host10.2.92.1

last host10.2.95.254

subnet mask255.255.252.0

wildcard0.0.3.255

addresses1,024

usable hosts1,022

classA

ipcalc 10.2.92.0/22

address00001010.00000010.01011100.00000000

subnet mask11111111.11111111.11111100.00000000

network00001010.00000010.01011100.00000000

broadcast00001010.00000010.01011111.11111111

green = network part, grey = host part

hex0x0a025c00

decimal167926784

reverse dns0.92.2.10.in-addr.arpa

ipv4-mapped::ffff:a02:5c00

/22 split into /30 · 256 subnets

close ×

#	network	host range	broadcast
1	10.2.92.0/30	10.2.92.1 – 10.2.92.2	10.2.92.3
2	10.2.92.4/30	10.2.92.5 – 10.2.92.6	10.2.92.7
3	10.2.92.8/30	10.2.92.9 – 10.2.92.10	10.2.92.11
4	10.2.92.12/30	10.2.92.13 – 10.2.92.14	10.2.92.15
5	10.2.92.16/30	10.2.92.17 – 10.2.92.18	10.2.92.19
6	10.2.92.20/30	10.2.92.21 – 10.2.92.22	10.2.92.23
7	10.2.92.24/30	10.2.92.25 – 10.2.92.26	10.2.92.27
8	10.2.92.28/30	10.2.92.29 – 10.2.92.30	10.2.92.31
9	10.2.92.32/30	10.2.92.33 – 10.2.92.34	10.2.92.35
10	10.2.92.36/30	10.2.92.37 – 10.2.92.38	10.2.92.39
11	10.2.92.40/30	10.2.92.41 – 10.2.92.42	10.2.92.43
12	10.2.92.44/30	10.2.92.45 – 10.2.92.46	10.2.92.47
13	10.2.92.48/30	10.2.92.49 – 10.2.92.50	10.2.92.51
14	10.2.92.52/30	10.2.92.53 – 10.2.92.54	10.2.92.55
15	10.2.92.56/30	10.2.92.57 – 10.2.92.58	10.2.92.59
16	10.2.92.60/30	10.2.92.61 – 10.2.92.62	10.2.92.63
17	10.2.92.64/30	10.2.92.65 – 10.2.92.66	10.2.92.67
18	10.2.92.68/30	10.2.92.69 – 10.2.92.70	10.2.92.71
19	10.2.92.72/30	10.2.92.73 – 10.2.92.74	10.2.92.75
20	10.2.92.76/30	10.2.92.77 – 10.2.92.78	10.2.92.79
21	10.2.92.80/30	10.2.92.81 – 10.2.92.82	10.2.92.83
22	10.2.92.84/30	10.2.92.85 – 10.2.92.86	10.2.92.87
23	10.2.92.88/30	10.2.92.89 – 10.2.92.90	10.2.92.91
24	10.2.92.92/30	10.2.92.93 – 10.2.92.94	10.2.92.95
25	10.2.92.96/30	10.2.92.97 – 10.2.92.98	10.2.92.99
26	10.2.92.100/30	10.2.92.101 – 10.2.92.102	10.2.92.103
27	10.2.92.104/30	10.2.92.105 – 10.2.92.106	10.2.92.107
28	10.2.92.108/30	10.2.92.109 – 10.2.92.110	10.2.92.111
29	10.2.92.112/30	10.2.92.113 – 10.2.92.114	10.2.92.115
30	10.2.92.116/30	10.2.92.117 – 10.2.92.118	10.2.92.119
31	10.2.92.120/30	10.2.92.121 – 10.2.92.122	10.2.92.123
32	10.2.92.124/30	10.2.92.125 – 10.2.92.126	10.2.92.127
33	10.2.92.128/30	10.2.92.129 – 10.2.92.130	10.2.92.131
34	10.2.92.132/30	10.2.92.133 – 10.2.92.134	10.2.92.135
35	10.2.92.136/30	10.2.92.137 – 10.2.92.138	10.2.92.139
36	10.2.92.140/30	10.2.92.141 – 10.2.92.142	10.2.92.143
37	10.2.92.144/30	10.2.92.145 – 10.2.92.146	10.2.92.147
38	10.2.92.148/30	10.2.92.149 – 10.2.92.150	10.2.92.151
39	10.2.92.152/30	10.2.92.153 – 10.2.92.154	10.2.92.155
40	10.2.92.156/30	10.2.92.157 – 10.2.92.158	10.2.92.159
41	10.2.92.160/30	10.2.92.161 – 10.2.92.162	10.2.92.163
42	10.2.92.164/30	10.2.92.165 – 10.2.92.166	10.2.92.167
43	10.2.92.168/30	10.2.92.169 – 10.2.92.170	10.2.92.171
44	10.2.92.172/30	10.2.92.173 – 10.2.92.174	10.2.92.175
45	10.2.92.176/30	10.2.92.177 – 10.2.92.178	10.2.92.179
46	10.2.92.180/30	10.2.92.181 – 10.2.92.182	10.2.92.183
47	10.2.92.184/30	10.2.92.185 – 10.2.92.186	10.2.92.187
48	10.2.92.188/30	10.2.92.189 – 10.2.92.190	10.2.92.191
49	10.2.92.192/30	10.2.92.193 – 10.2.92.194	10.2.92.195
50	10.2.92.196/30	10.2.92.197 – 10.2.92.198	10.2.92.199
51	10.2.92.200/30	10.2.92.201 – 10.2.92.202	10.2.92.203
52	10.2.92.204/30	10.2.92.205 – 10.2.92.206	10.2.92.207
53	10.2.92.208/30	10.2.92.209 – 10.2.92.210	10.2.92.211
54	10.2.92.212/30	10.2.92.213 – 10.2.92.214	10.2.92.215
55	10.2.92.216/30	10.2.92.217 – 10.2.92.218	10.2.92.219
56	10.2.92.220/30	10.2.92.221 – 10.2.92.222	10.2.92.223
57	10.2.92.224/30	10.2.92.225 – 10.2.92.226	10.2.92.227
58	10.2.92.228/30	10.2.92.229 – 10.2.92.230	10.2.92.231
59	10.2.92.232/30	10.2.92.233 – 10.2.92.234	10.2.92.235
60	10.2.92.236/30	10.2.92.237 – 10.2.92.238	10.2.92.239
61	10.2.92.240/30	10.2.92.241 – 10.2.92.242	10.2.92.243
62	10.2.92.244/30	10.2.92.245 – 10.2.92.246	10.2.92.247
63	10.2.92.248/30	10.2.92.249 – 10.2.92.250	10.2.92.251
64	10.2.92.252/30	10.2.92.253 – 10.2.92.254	10.2.92.255
65	10.2.93.0/30	10.2.93.1 – 10.2.93.2	10.2.93.3
66	10.2.93.4/30	10.2.93.5 – 10.2.93.6	10.2.93.7
67	10.2.93.8/30	10.2.93.9 – 10.2.93.10	10.2.93.11
68	10.2.93.12/30	10.2.93.13 – 10.2.93.14	10.2.93.15
69	10.2.93.16/30	10.2.93.17 – 10.2.93.18	10.2.93.19
70	10.2.93.20/30	10.2.93.21 – 10.2.93.22	10.2.93.23
71	10.2.93.24/30	10.2.93.25 – 10.2.93.26	10.2.93.27
72	10.2.93.28/30	10.2.93.29 – 10.2.93.30	10.2.93.31
73	10.2.93.32/30	10.2.93.33 – 10.2.93.34	10.2.93.35
74	10.2.93.36/30	10.2.93.37 – 10.2.93.38	10.2.93.39
75	10.2.93.40/30	10.2.93.41 – 10.2.93.42	10.2.93.43
76	10.2.93.44/30	10.2.93.45 – 10.2.93.46	10.2.93.47
77	10.2.93.48/30	10.2.93.49 – 10.2.93.50	10.2.93.51
78	10.2.93.52/30	10.2.93.53 – 10.2.93.54	10.2.93.55
79	10.2.93.56/30	10.2.93.57 – 10.2.93.58	10.2.93.59
80	10.2.93.60/30	10.2.93.61 – 10.2.93.62	10.2.93.63
81	10.2.93.64/30	10.2.93.65 – 10.2.93.66	10.2.93.67
82	10.2.93.68/30	10.2.93.69 – 10.2.93.70	10.2.93.71
83	10.2.93.72/30	10.2.93.73 – 10.2.93.74	10.2.93.75
84	10.2.93.76/30	10.2.93.77 – 10.2.93.78	10.2.93.79
85	10.2.93.80/30	10.2.93.81 – 10.2.93.82	10.2.93.83
86	10.2.93.84/30	10.2.93.85 – 10.2.93.86	10.2.93.87
87	10.2.93.88/30	10.2.93.89 – 10.2.93.90	10.2.93.91
88	10.2.93.92/30	10.2.93.93 – 10.2.93.94	10.2.93.95
89	10.2.93.96/30	10.2.93.97 – 10.2.93.98	10.2.93.99
90	10.2.93.100/30	10.2.93.101 – 10.2.93.102	10.2.93.103
91	10.2.93.104/30	10.2.93.105 – 10.2.93.106	10.2.93.107
92	10.2.93.108/30	10.2.93.109 – 10.2.93.110	10.2.93.111
93	10.2.93.112/30	10.2.93.113 – 10.2.93.114	10.2.93.115
94	10.2.93.116/30	10.2.93.117 – 10.2.93.118	10.2.93.119
95	10.2.93.120/30	10.2.93.121 – 10.2.93.122	10.2.93.123
96	10.2.93.124/30	10.2.93.125 – 10.2.93.126	10.2.93.127
97	10.2.93.128/30	10.2.93.129 – 10.2.93.130	10.2.93.131
98	10.2.93.132/30	10.2.93.133 – 10.2.93.134	10.2.93.135
99	10.2.93.136/30	10.2.93.137 – 10.2.93.138	10.2.93.139
100	10.2.93.140/30	10.2.93.141 – 10.2.93.142	10.2.93.143
101	10.2.93.144/30	10.2.93.145 – 10.2.93.146	10.2.93.147
102	10.2.93.148/30	10.2.93.149 – 10.2.93.150	10.2.93.151
103	10.2.93.152/30	10.2.93.153 – 10.2.93.154	10.2.93.155
104	10.2.93.156/30	10.2.93.157 – 10.2.93.158	10.2.93.159
105	10.2.93.160/30	10.2.93.161 – 10.2.93.162	10.2.93.163
106	10.2.93.164/30	10.2.93.165 – 10.2.93.166	10.2.93.167
107	10.2.93.168/30	10.2.93.169 – 10.2.93.170	10.2.93.171
108	10.2.93.172/30	10.2.93.173 – 10.2.93.174	10.2.93.175
109	10.2.93.176/30	10.2.93.177 – 10.2.93.178	10.2.93.179
110	10.2.93.180/30	10.2.93.181 – 10.2.93.182	10.2.93.183
111	10.2.93.184/30	10.2.93.185 – 10.2.93.186	10.2.93.187
112	10.2.93.188/30	10.2.93.189 – 10.2.93.190	10.2.93.191
113	10.2.93.192/30	10.2.93.193 – 10.2.93.194	10.2.93.195
114	10.2.93.196/30	10.2.93.197 – 10.2.93.198	10.2.93.199
115	10.2.93.200/30	10.2.93.201 – 10.2.93.202	10.2.93.203
116	10.2.93.204/30	10.2.93.205 – 10.2.93.206	10.2.93.207
117	10.2.93.208/30	10.2.93.209 – 10.2.93.210	10.2.93.211
118	10.2.93.212/30	10.2.93.213 – 10.2.93.214	10.2.93.215
119	10.2.93.216/30	10.2.93.217 – 10.2.93.218	10.2.93.219
120	10.2.93.220/30	10.2.93.221 – 10.2.93.222	10.2.93.223
121	10.2.93.224/30	10.2.93.225 – 10.2.93.226	10.2.93.227
122	10.2.93.228/30	10.2.93.229 – 10.2.93.230	10.2.93.231
123	10.2.93.232/30	10.2.93.233 – 10.2.93.234	10.2.93.235
124	10.2.93.236/30	10.2.93.237 – 10.2.93.238	10.2.93.239
125	10.2.93.240/30	10.2.93.241 – 10.2.93.242	10.2.93.243
126	10.2.93.244/30	10.2.93.245 – 10.2.93.246	10.2.93.247
127	10.2.93.248/30	10.2.93.249 – 10.2.93.250	10.2.93.251
128	10.2.93.252/30	10.2.93.253 – 10.2.93.254	10.2.93.255
129	10.2.94.0/30	10.2.94.1 – 10.2.94.2	10.2.94.3
130	10.2.94.4/30	10.2.94.5 – 10.2.94.6	10.2.94.7
131	10.2.94.8/30	10.2.94.9 – 10.2.94.10	10.2.94.11
132	10.2.94.12/30	10.2.94.13 – 10.2.94.14	10.2.94.15
133	10.2.94.16/30	10.2.94.17 – 10.2.94.18	10.2.94.19
134	10.2.94.20/30	10.2.94.21 – 10.2.94.22	10.2.94.23
135	10.2.94.24/30	10.2.94.25 – 10.2.94.26	10.2.94.27
136	10.2.94.28/30	10.2.94.29 – 10.2.94.30	10.2.94.31
137	10.2.94.32/30	10.2.94.33 – 10.2.94.34	10.2.94.35
138	10.2.94.36/30	10.2.94.37 – 10.2.94.38	10.2.94.39
139	10.2.94.40/30	10.2.94.41 – 10.2.94.42	10.2.94.43
140	10.2.94.44/30	10.2.94.45 – 10.2.94.46	10.2.94.47
141	10.2.94.48/30	10.2.94.49 – 10.2.94.50	10.2.94.51
142	10.2.94.52/30	10.2.94.53 – 10.2.94.54	10.2.94.55
143	10.2.94.56/30	10.2.94.57 – 10.2.94.58	10.2.94.59
144	10.2.94.60/30	10.2.94.61 – 10.2.94.62	10.2.94.63
145	10.2.94.64/30	10.2.94.65 – 10.2.94.66	10.2.94.67
146	10.2.94.68/30	10.2.94.69 – 10.2.94.70	10.2.94.71
147	10.2.94.72/30	10.2.94.73 – 10.2.94.74	10.2.94.75
148	10.2.94.76/30	10.2.94.77 – 10.2.94.78	10.2.94.79
149	10.2.94.80/30	10.2.94.81 – 10.2.94.82	10.2.94.83
150	10.2.94.84/30	10.2.94.85 – 10.2.94.86	10.2.94.87
151	10.2.94.88/30	10.2.94.89 – 10.2.94.90	10.2.94.91
152	10.2.94.92/30	10.2.94.93 – 10.2.94.94	10.2.94.95
153	10.2.94.96/30	10.2.94.97 – 10.2.94.98	10.2.94.99
154	10.2.94.100/30	10.2.94.101 – 10.2.94.102	10.2.94.103
155	10.2.94.104/30	10.2.94.105 – 10.2.94.106	10.2.94.107
156	10.2.94.108/30	10.2.94.109 – 10.2.94.110	10.2.94.111
157	10.2.94.112/30	10.2.94.113 – 10.2.94.114	10.2.94.115
158	10.2.94.116/30	10.2.94.117 – 10.2.94.118	10.2.94.119
159	10.2.94.120/30	10.2.94.121 – 10.2.94.122	10.2.94.123
160	10.2.94.124/30	10.2.94.125 – 10.2.94.126	10.2.94.127
161	10.2.94.128/30	10.2.94.129 – 10.2.94.130	10.2.94.131
162	10.2.94.132/30	10.2.94.133 – 10.2.94.134	10.2.94.135
163	10.2.94.136/30	10.2.94.137 – 10.2.94.138	10.2.94.139
164	10.2.94.140/30	10.2.94.141 – 10.2.94.142	10.2.94.143
165	10.2.94.144/30	10.2.94.145 – 10.2.94.146	10.2.94.147
166	10.2.94.148/30	10.2.94.149 – 10.2.94.150	10.2.94.151
167	10.2.94.152/30	10.2.94.153 – 10.2.94.154	10.2.94.155
168	10.2.94.156/30	10.2.94.157 – 10.2.94.158	10.2.94.159
169	10.2.94.160/30	10.2.94.161 – 10.2.94.162	10.2.94.163
170	10.2.94.164/30	10.2.94.165 – 10.2.94.166	10.2.94.167
171	10.2.94.168/30	10.2.94.169 – 10.2.94.170	10.2.94.171
172	10.2.94.172/30	10.2.94.173 – 10.2.94.174	10.2.94.175
173	10.2.94.176/30	10.2.94.177 – 10.2.94.178	10.2.94.179
174	10.2.94.180/30	10.2.94.181 – 10.2.94.182	10.2.94.183
175	10.2.94.184/30	10.2.94.185 – 10.2.94.186	10.2.94.187
176	10.2.94.188/30	10.2.94.189 – 10.2.94.190	10.2.94.191
177	10.2.94.192/30	10.2.94.193 – 10.2.94.194	10.2.94.195
178	10.2.94.196/30	10.2.94.197 – 10.2.94.198	10.2.94.199
179	10.2.94.200/30	10.2.94.201 – 10.2.94.202	10.2.94.203
180	10.2.94.204/30	10.2.94.205 – 10.2.94.206	10.2.94.207
181	10.2.94.208/30	10.2.94.209 – 10.2.94.210	10.2.94.211
182	10.2.94.212/30	10.2.94.213 – 10.2.94.214	10.2.94.215
183	10.2.94.216/30	10.2.94.217 – 10.2.94.218	10.2.94.219
184	10.2.94.220/30	10.2.94.221 – 10.2.94.222	10.2.94.223
185	10.2.94.224/30	10.2.94.225 – 10.2.94.226	10.2.94.227
186	10.2.94.228/30	10.2.94.229 – 10.2.94.230	10.2.94.231
187	10.2.94.232/30	10.2.94.233 – 10.2.94.234	10.2.94.235
188	10.2.94.236/30	10.2.94.237 – 10.2.94.238	10.2.94.239
189	10.2.94.240/30	10.2.94.241 – 10.2.94.242	10.2.94.243
190	10.2.94.244/30	10.2.94.245 – 10.2.94.246	10.2.94.247
191	10.2.94.248/30	10.2.94.249 – 10.2.94.250	10.2.94.251
192	10.2.94.252/30	10.2.94.253 – 10.2.94.254	10.2.94.255
193	10.2.95.0/30	10.2.95.1 – 10.2.95.2	10.2.95.3
194	10.2.95.4/30	10.2.95.5 – 10.2.95.6	10.2.95.7
195	10.2.95.8/30	10.2.95.9 – 10.2.95.10	10.2.95.11
196	10.2.95.12/30	10.2.95.13 – 10.2.95.14	10.2.95.15
197	10.2.95.16/30	10.2.95.17 – 10.2.95.18	10.2.95.19
198	10.2.95.20/30	10.2.95.21 – 10.2.95.22	10.2.95.23
199	10.2.95.24/30	10.2.95.25 – 10.2.95.26	10.2.95.27
200	10.2.95.28/30	10.2.95.29 – 10.2.95.30	10.2.95.31
201	10.2.95.32/30	10.2.95.33 – 10.2.95.34	10.2.95.35
202	10.2.95.36/30	10.2.95.37 – 10.2.95.38	10.2.95.39
203	10.2.95.40/30	10.2.95.41 – 10.2.95.42	10.2.95.43
204	10.2.95.44/30	10.2.95.45 – 10.2.95.46	10.2.95.47
205	10.2.95.48/30	10.2.95.49 – 10.2.95.50	10.2.95.51
206	10.2.95.52/30	10.2.95.53 – 10.2.95.54	10.2.95.55
207	10.2.95.56/30	10.2.95.57 – 10.2.95.58	10.2.95.59
208	10.2.95.60/30	10.2.95.61 – 10.2.95.62	10.2.95.63
209	10.2.95.64/30	10.2.95.65 – 10.2.95.66	10.2.95.67
210	10.2.95.68/30	10.2.95.69 – 10.2.95.70	10.2.95.71
211	10.2.95.72/30	10.2.95.73 – 10.2.95.74	10.2.95.75
212	10.2.95.76/30	10.2.95.77 – 10.2.95.78	10.2.95.79
213	10.2.95.80/30	10.2.95.81 – 10.2.95.82	10.2.95.83
214	10.2.95.84/30	10.2.95.85 – 10.2.95.86	10.2.95.87
215	10.2.95.88/30	10.2.95.89 – 10.2.95.90	10.2.95.91
216	10.2.95.92/30	10.2.95.93 – 10.2.95.94	10.2.95.95
217	10.2.95.96/30	10.2.95.97 – 10.2.95.98	10.2.95.99
218	10.2.95.100/30	10.2.95.101 – 10.2.95.102	10.2.95.103
219	10.2.95.104/30	10.2.95.105 – 10.2.95.106	10.2.95.107
220	10.2.95.108/30	10.2.95.109 – 10.2.95.110	10.2.95.111
221	10.2.95.112/30	10.2.95.113 – 10.2.95.114	10.2.95.115
222	10.2.95.116/30	10.2.95.117 – 10.2.95.118	10.2.95.119
223	10.2.95.120/30	10.2.95.121 – 10.2.95.122	10.2.95.123
224	10.2.95.124/30	10.2.95.125 – 10.2.95.126	10.2.95.127
225	10.2.95.128/30	10.2.95.129 – 10.2.95.130	10.2.95.131
226	10.2.95.132/30	10.2.95.133 – 10.2.95.134	10.2.95.135
227	10.2.95.136/30	10.2.95.137 – 10.2.95.138	10.2.95.139
228	10.2.95.140/30	10.2.95.141 – 10.2.95.142	10.2.95.143
229	10.2.95.144/30	10.2.95.145 – 10.2.95.146	10.2.95.147
230	10.2.95.148/30	10.2.95.149 – 10.2.95.150	10.2.95.151
231	10.2.95.152/30	10.2.95.153 – 10.2.95.154	10.2.95.155
232	10.2.95.156/30	10.2.95.157 – 10.2.95.158	10.2.95.159
233	10.2.95.160/30	10.2.95.161 – 10.2.95.162	10.2.95.163
234	10.2.95.164/30	10.2.95.165 – 10.2.95.166	10.2.95.167
235	10.2.95.168/30	10.2.95.169 – 10.2.95.170	10.2.95.171
236	10.2.95.172/30	10.2.95.173 – 10.2.95.174	10.2.95.175
237	10.2.95.176/30	10.2.95.177 – 10.2.95.178	10.2.95.179
238	10.2.95.180/30	10.2.95.181 – 10.2.95.182	10.2.95.183
239	10.2.95.184/30	10.2.95.185 – 10.2.95.186	10.2.95.187
240	10.2.95.188/30	10.2.95.189 – 10.2.95.190	10.2.95.191
241	10.2.95.192/30	10.2.95.193 – 10.2.95.194	10.2.95.195
242	10.2.95.196/30	10.2.95.197 – 10.2.95.198	10.2.95.199
243	10.2.95.200/30	10.2.95.201 – 10.2.95.202	10.2.95.203
244	10.2.95.204/30	10.2.95.205 – 10.2.95.206	10.2.95.207
245	10.2.95.208/30	10.2.95.209 – 10.2.95.210	10.2.95.211
246	10.2.95.212/30	10.2.95.213 – 10.2.95.214	10.2.95.215
247	10.2.95.216/30	10.2.95.217 – 10.2.95.218	10.2.95.219
248	10.2.95.220/30	10.2.95.221 – 10.2.95.222	10.2.95.223
249	10.2.95.224/30	10.2.95.225 – 10.2.95.226	10.2.95.227
250	10.2.95.228/30	10.2.95.229 – 10.2.95.230	10.2.95.231
251	10.2.95.232/30	10.2.95.233 – 10.2.95.234	10.2.95.235
252	10.2.95.236/30	10.2.95.237 – 10.2.95.238	10.2.95.239
253	10.2.95.240/30	10.2.95.241 – 10.2.95.242	10.2.95.243
254	10.2.95.244/30	10.2.95.245 – 10.2.95.246	10.2.95.247
255	10.2.95.248/30	10.2.95.249 – 10.2.95.250	10.2.95.251
256	10.2.95.252/30	10.2.95.253 – 10.2.95.254	10.2.95.255

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 →