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)10.2.228.0/22

network10.2.228.0/22

broadcast10.2.231.255

first host10.2.228.1

last host10.2.231.254

subnet mask255.255.252.0

wildcard0.0.3.255

addresses1,024

usable hosts1,022

classA

ipcalc 10.2.228.0/22

address00001010.00000010.11100100.00000000

subnet mask11111111.11111111.11111100.00000000

network00001010.00000010.11100100.00000000

broadcast00001010.00000010.11100111.11111111

green = network part, grey = host part

hex0x0a02e400

decimal167961600

reverse dns0.228.2.10.in-addr.arpa

ipv4-mapped::ffff:a02:e400

/22 split into /30 · 256 subnets

close ×

#	network	host range	broadcast
1	10.2.228.0/30	10.2.228.1 – 10.2.228.2	10.2.228.3
2	10.2.228.4/30	10.2.228.5 – 10.2.228.6	10.2.228.7
3	10.2.228.8/30	10.2.228.9 – 10.2.228.10	10.2.228.11
4	10.2.228.12/30	10.2.228.13 – 10.2.228.14	10.2.228.15
5	10.2.228.16/30	10.2.228.17 – 10.2.228.18	10.2.228.19
6	10.2.228.20/30	10.2.228.21 – 10.2.228.22	10.2.228.23
7	10.2.228.24/30	10.2.228.25 – 10.2.228.26	10.2.228.27
8	10.2.228.28/30	10.2.228.29 – 10.2.228.30	10.2.228.31
9	10.2.228.32/30	10.2.228.33 – 10.2.228.34	10.2.228.35
10	10.2.228.36/30	10.2.228.37 – 10.2.228.38	10.2.228.39
11	10.2.228.40/30	10.2.228.41 – 10.2.228.42	10.2.228.43
12	10.2.228.44/30	10.2.228.45 – 10.2.228.46	10.2.228.47
13	10.2.228.48/30	10.2.228.49 – 10.2.228.50	10.2.228.51
14	10.2.228.52/30	10.2.228.53 – 10.2.228.54	10.2.228.55
15	10.2.228.56/30	10.2.228.57 – 10.2.228.58	10.2.228.59
16	10.2.228.60/30	10.2.228.61 – 10.2.228.62	10.2.228.63
17	10.2.228.64/30	10.2.228.65 – 10.2.228.66	10.2.228.67
18	10.2.228.68/30	10.2.228.69 – 10.2.228.70	10.2.228.71
19	10.2.228.72/30	10.2.228.73 – 10.2.228.74	10.2.228.75
20	10.2.228.76/30	10.2.228.77 – 10.2.228.78	10.2.228.79
21	10.2.228.80/30	10.2.228.81 – 10.2.228.82	10.2.228.83
22	10.2.228.84/30	10.2.228.85 – 10.2.228.86	10.2.228.87
23	10.2.228.88/30	10.2.228.89 – 10.2.228.90	10.2.228.91
24	10.2.228.92/30	10.2.228.93 – 10.2.228.94	10.2.228.95
25	10.2.228.96/30	10.2.228.97 – 10.2.228.98	10.2.228.99
26	10.2.228.100/30	10.2.228.101 – 10.2.228.102	10.2.228.103
27	10.2.228.104/30	10.2.228.105 – 10.2.228.106	10.2.228.107
28	10.2.228.108/30	10.2.228.109 – 10.2.228.110	10.2.228.111
29	10.2.228.112/30	10.2.228.113 – 10.2.228.114	10.2.228.115
30	10.2.228.116/30	10.2.228.117 – 10.2.228.118	10.2.228.119
31	10.2.228.120/30	10.2.228.121 – 10.2.228.122	10.2.228.123
32	10.2.228.124/30	10.2.228.125 – 10.2.228.126	10.2.228.127
33	10.2.228.128/30	10.2.228.129 – 10.2.228.130	10.2.228.131
34	10.2.228.132/30	10.2.228.133 – 10.2.228.134	10.2.228.135
35	10.2.228.136/30	10.2.228.137 – 10.2.228.138	10.2.228.139
36	10.2.228.140/30	10.2.228.141 – 10.2.228.142	10.2.228.143
37	10.2.228.144/30	10.2.228.145 – 10.2.228.146	10.2.228.147
38	10.2.228.148/30	10.2.228.149 – 10.2.228.150	10.2.228.151
39	10.2.228.152/30	10.2.228.153 – 10.2.228.154	10.2.228.155
40	10.2.228.156/30	10.2.228.157 – 10.2.228.158	10.2.228.159
41	10.2.228.160/30	10.2.228.161 – 10.2.228.162	10.2.228.163
42	10.2.228.164/30	10.2.228.165 – 10.2.228.166	10.2.228.167
43	10.2.228.168/30	10.2.228.169 – 10.2.228.170	10.2.228.171
44	10.2.228.172/30	10.2.228.173 – 10.2.228.174	10.2.228.175
45	10.2.228.176/30	10.2.228.177 – 10.2.228.178	10.2.228.179
46	10.2.228.180/30	10.2.228.181 – 10.2.228.182	10.2.228.183
47	10.2.228.184/30	10.2.228.185 – 10.2.228.186	10.2.228.187
48	10.2.228.188/30	10.2.228.189 – 10.2.228.190	10.2.228.191
49	10.2.228.192/30	10.2.228.193 – 10.2.228.194	10.2.228.195
50	10.2.228.196/30	10.2.228.197 – 10.2.228.198	10.2.228.199
51	10.2.228.200/30	10.2.228.201 – 10.2.228.202	10.2.228.203
52	10.2.228.204/30	10.2.228.205 – 10.2.228.206	10.2.228.207
53	10.2.228.208/30	10.2.228.209 – 10.2.228.210	10.2.228.211
54	10.2.228.212/30	10.2.228.213 – 10.2.228.214	10.2.228.215
55	10.2.228.216/30	10.2.228.217 – 10.2.228.218	10.2.228.219
56	10.2.228.220/30	10.2.228.221 – 10.2.228.222	10.2.228.223
57	10.2.228.224/30	10.2.228.225 – 10.2.228.226	10.2.228.227
58	10.2.228.228/30	10.2.228.229 – 10.2.228.230	10.2.228.231
59	10.2.228.232/30	10.2.228.233 – 10.2.228.234	10.2.228.235
60	10.2.228.236/30	10.2.228.237 – 10.2.228.238	10.2.228.239
61	10.2.228.240/30	10.2.228.241 – 10.2.228.242	10.2.228.243
62	10.2.228.244/30	10.2.228.245 – 10.2.228.246	10.2.228.247
63	10.2.228.248/30	10.2.228.249 – 10.2.228.250	10.2.228.251
64	10.2.228.252/30	10.2.228.253 – 10.2.228.254	10.2.228.255
65	10.2.229.0/30	10.2.229.1 – 10.2.229.2	10.2.229.3
66	10.2.229.4/30	10.2.229.5 – 10.2.229.6	10.2.229.7
67	10.2.229.8/30	10.2.229.9 – 10.2.229.10	10.2.229.11
68	10.2.229.12/30	10.2.229.13 – 10.2.229.14	10.2.229.15
69	10.2.229.16/30	10.2.229.17 – 10.2.229.18	10.2.229.19
70	10.2.229.20/30	10.2.229.21 – 10.2.229.22	10.2.229.23
71	10.2.229.24/30	10.2.229.25 – 10.2.229.26	10.2.229.27
72	10.2.229.28/30	10.2.229.29 – 10.2.229.30	10.2.229.31
73	10.2.229.32/30	10.2.229.33 – 10.2.229.34	10.2.229.35
74	10.2.229.36/30	10.2.229.37 – 10.2.229.38	10.2.229.39
75	10.2.229.40/30	10.2.229.41 – 10.2.229.42	10.2.229.43
76	10.2.229.44/30	10.2.229.45 – 10.2.229.46	10.2.229.47
77	10.2.229.48/30	10.2.229.49 – 10.2.229.50	10.2.229.51
78	10.2.229.52/30	10.2.229.53 – 10.2.229.54	10.2.229.55
79	10.2.229.56/30	10.2.229.57 – 10.2.229.58	10.2.229.59
80	10.2.229.60/30	10.2.229.61 – 10.2.229.62	10.2.229.63
81	10.2.229.64/30	10.2.229.65 – 10.2.229.66	10.2.229.67
82	10.2.229.68/30	10.2.229.69 – 10.2.229.70	10.2.229.71
83	10.2.229.72/30	10.2.229.73 – 10.2.229.74	10.2.229.75
84	10.2.229.76/30	10.2.229.77 – 10.2.229.78	10.2.229.79
85	10.2.229.80/30	10.2.229.81 – 10.2.229.82	10.2.229.83
86	10.2.229.84/30	10.2.229.85 – 10.2.229.86	10.2.229.87
87	10.2.229.88/30	10.2.229.89 – 10.2.229.90	10.2.229.91
88	10.2.229.92/30	10.2.229.93 – 10.2.229.94	10.2.229.95
89	10.2.229.96/30	10.2.229.97 – 10.2.229.98	10.2.229.99
90	10.2.229.100/30	10.2.229.101 – 10.2.229.102	10.2.229.103
91	10.2.229.104/30	10.2.229.105 – 10.2.229.106	10.2.229.107
92	10.2.229.108/30	10.2.229.109 – 10.2.229.110	10.2.229.111
93	10.2.229.112/30	10.2.229.113 – 10.2.229.114	10.2.229.115
94	10.2.229.116/30	10.2.229.117 – 10.2.229.118	10.2.229.119
95	10.2.229.120/30	10.2.229.121 – 10.2.229.122	10.2.229.123
96	10.2.229.124/30	10.2.229.125 – 10.2.229.126	10.2.229.127
97	10.2.229.128/30	10.2.229.129 – 10.2.229.130	10.2.229.131
98	10.2.229.132/30	10.2.229.133 – 10.2.229.134	10.2.229.135
99	10.2.229.136/30	10.2.229.137 – 10.2.229.138	10.2.229.139
100	10.2.229.140/30	10.2.229.141 – 10.2.229.142	10.2.229.143
101	10.2.229.144/30	10.2.229.145 – 10.2.229.146	10.2.229.147
102	10.2.229.148/30	10.2.229.149 – 10.2.229.150	10.2.229.151
103	10.2.229.152/30	10.2.229.153 – 10.2.229.154	10.2.229.155
104	10.2.229.156/30	10.2.229.157 – 10.2.229.158	10.2.229.159
105	10.2.229.160/30	10.2.229.161 – 10.2.229.162	10.2.229.163
106	10.2.229.164/30	10.2.229.165 – 10.2.229.166	10.2.229.167
107	10.2.229.168/30	10.2.229.169 – 10.2.229.170	10.2.229.171
108	10.2.229.172/30	10.2.229.173 – 10.2.229.174	10.2.229.175
109	10.2.229.176/30	10.2.229.177 – 10.2.229.178	10.2.229.179
110	10.2.229.180/30	10.2.229.181 – 10.2.229.182	10.2.229.183
111	10.2.229.184/30	10.2.229.185 – 10.2.229.186	10.2.229.187
112	10.2.229.188/30	10.2.229.189 – 10.2.229.190	10.2.229.191
113	10.2.229.192/30	10.2.229.193 – 10.2.229.194	10.2.229.195
114	10.2.229.196/30	10.2.229.197 – 10.2.229.198	10.2.229.199
115	10.2.229.200/30	10.2.229.201 – 10.2.229.202	10.2.229.203
116	10.2.229.204/30	10.2.229.205 – 10.2.229.206	10.2.229.207
117	10.2.229.208/30	10.2.229.209 – 10.2.229.210	10.2.229.211
118	10.2.229.212/30	10.2.229.213 – 10.2.229.214	10.2.229.215
119	10.2.229.216/30	10.2.229.217 – 10.2.229.218	10.2.229.219
120	10.2.229.220/30	10.2.229.221 – 10.2.229.222	10.2.229.223
121	10.2.229.224/30	10.2.229.225 – 10.2.229.226	10.2.229.227
122	10.2.229.228/30	10.2.229.229 – 10.2.229.230	10.2.229.231
123	10.2.229.232/30	10.2.229.233 – 10.2.229.234	10.2.229.235
124	10.2.229.236/30	10.2.229.237 – 10.2.229.238	10.2.229.239
125	10.2.229.240/30	10.2.229.241 – 10.2.229.242	10.2.229.243
126	10.2.229.244/30	10.2.229.245 – 10.2.229.246	10.2.229.247
127	10.2.229.248/30	10.2.229.249 – 10.2.229.250	10.2.229.251
128	10.2.229.252/30	10.2.229.253 – 10.2.229.254	10.2.229.255
129	10.2.230.0/30	10.2.230.1 – 10.2.230.2	10.2.230.3
130	10.2.230.4/30	10.2.230.5 – 10.2.230.6	10.2.230.7
131	10.2.230.8/30	10.2.230.9 – 10.2.230.10	10.2.230.11
132	10.2.230.12/30	10.2.230.13 – 10.2.230.14	10.2.230.15
133	10.2.230.16/30	10.2.230.17 – 10.2.230.18	10.2.230.19
134	10.2.230.20/30	10.2.230.21 – 10.2.230.22	10.2.230.23
135	10.2.230.24/30	10.2.230.25 – 10.2.230.26	10.2.230.27
136	10.2.230.28/30	10.2.230.29 – 10.2.230.30	10.2.230.31
137	10.2.230.32/30	10.2.230.33 – 10.2.230.34	10.2.230.35
138	10.2.230.36/30	10.2.230.37 – 10.2.230.38	10.2.230.39
139	10.2.230.40/30	10.2.230.41 – 10.2.230.42	10.2.230.43
140	10.2.230.44/30	10.2.230.45 – 10.2.230.46	10.2.230.47
141	10.2.230.48/30	10.2.230.49 – 10.2.230.50	10.2.230.51
142	10.2.230.52/30	10.2.230.53 – 10.2.230.54	10.2.230.55
143	10.2.230.56/30	10.2.230.57 – 10.2.230.58	10.2.230.59
144	10.2.230.60/30	10.2.230.61 – 10.2.230.62	10.2.230.63
145	10.2.230.64/30	10.2.230.65 – 10.2.230.66	10.2.230.67
146	10.2.230.68/30	10.2.230.69 – 10.2.230.70	10.2.230.71
147	10.2.230.72/30	10.2.230.73 – 10.2.230.74	10.2.230.75
148	10.2.230.76/30	10.2.230.77 – 10.2.230.78	10.2.230.79
149	10.2.230.80/30	10.2.230.81 – 10.2.230.82	10.2.230.83
150	10.2.230.84/30	10.2.230.85 – 10.2.230.86	10.2.230.87
151	10.2.230.88/30	10.2.230.89 – 10.2.230.90	10.2.230.91
152	10.2.230.92/30	10.2.230.93 – 10.2.230.94	10.2.230.95
153	10.2.230.96/30	10.2.230.97 – 10.2.230.98	10.2.230.99
154	10.2.230.100/30	10.2.230.101 – 10.2.230.102	10.2.230.103
155	10.2.230.104/30	10.2.230.105 – 10.2.230.106	10.2.230.107
156	10.2.230.108/30	10.2.230.109 – 10.2.230.110	10.2.230.111
157	10.2.230.112/30	10.2.230.113 – 10.2.230.114	10.2.230.115
158	10.2.230.116/30	10.2.230.117 – 10.2.230.118	10.2.230.119
159	10.2.230.120/30	10.2.230.121 – 10.2.230.122	10.2.230.123
160	10.2.230.124/30	10.2.230.125 – 10.2.230.126	10.2.230.127
161	10.2.230.128/30	10.2.230.129 – 10.2.230.130	10.2.230.131
162	10.2.230.132/30	10.2.230.133 – 10.2.230.134	10.2.230.135
163	10.2.230.136/30	10.2.230.137 – 10.2.230.138	10.2.230.139
164	10.2.230.140/30	10.2.230.141 – 10.2.230.142	10.2.230.143
165	10.2.230.144/30	10.2.230.145 – 10.2.230.146	10.2.230.147
166	10.2.230.148/30	10.2.230.149 – 10.2.230.150	10.2.230.151
167	10.2.230.152/30	10.2.230.153 – 10.2.230.154	10.2.230.155
168	10.2.230.156/30	10.2.230.157 – 10.2.230.158	10.2.230.159
169	10.2.230.160/30	10.2.230.161 – 10.2.230.162	10.2.230.163
170	10.2.230.164/30	10.2.230.165 – 10.2.230.166	10.2.230.167
171	10.2.230.168/30	10.2.230.169 – 10.2.230.170	10.2.230.171
172	10.2.230.172/30	10.2.230.173 – 10.2.230.174	10.2.230.175
173	10.2.230.176/30	10.2.230.177 – 10.2.230.178	10.2.230.179
174	10.2.230.180/30	10.2.230.181 – 10.2.230.182	10.2.230.183
175	10.2.230.184/30	10.2.230.185 – 10.2.230.186	10.2.230.187
176	10.2.230.188/30	10.2.230.189 – 10.2.230.190	10.2.230.191
177	10.2.230.192/30	10.2.230.193 – 10.2.230.194	10.2.230.195
178	10.2.230.196/30	10.2.230.197 – 10.2.230.198	10.2.230.199
179	10.2.230.200/30	10.2.230.201 – 10.2.230.202	10.2.230.203
180	10.2.230.204/30	10.2.230.205 – 10.2.230.206	10.2.230.207
181	10.2.230.208/30	10.2.230.209 – 10.2.230.210	10.2.230.211
182	10.2.230.212/30	10.2.230.213 – 10.2.230.214	10.2.230.215
183	10.2.230.216/30	10.2.230.217 – 10.2.230.218	10.2.230.219
184	10.2.230.220/30	10.2.230.221 – 10.2.230.222	10.2.230.223
185	10.2.230.224/30	10.2.230.225 – 10.2.230.226	10.2.230.227
186	10.2.230.228/30	10.2.230.229 – 10.2.230.230	10.2.230.231
187	10.2.230.232/30	10.2.230.233 – 10.2.230.234	10.2.230.235
188	10.2.230.236/30	10.2.230.237 – 10.2.230.238	10.2.230.239
189	10.2.230.240/30	10.2.230.241 – 10.2.230.242	10.2.230.243
190	10.2.230.244/30	10.2.230.245 – 10.2.230.246	10.2.230.247
191	10.2.230.248/30	10.2.230.249 – 10.2.230.250	10.2.230.251
192	10.2.230.252/30	10.2.230.253 – 10.2.230.254	10.2.230.255
193	10.2.231.0/30	10.2.231.1 – 10.2.231.2	10.2.231.3
194	10.2.231.4/30	10.2.231.5 – 10.2.231.6	10.2.231.7
195	10.2.231.8/30	10.2.231.9 – 10.2.231.10	10.2.231.11
196	10.2.231.12/30	10.2.231.13 – 10.2.231.14	10.2.231.15
197	10.2.231.16/30	10.2.231.17 – 10.2.231.18	10.2.231.19
198	10.2.231.20/30	10.2.231.21 – 10.2.231.22	10.2.231.23
199	10.2.231.24/30	10.2.231.25 – 10.2.231.26	10.2.231.27
200	10.2.231.28/30	10.2.231.29 – 10.2.231.30	10.2.231.31
201	10.2.231.32/30	10.2.231.33 – 10.2.231.34	10.2.231.35
202	10.2.231.36/30	10.2.231.37 – 10.2.231.38	10.2.231.39
203	10.2.231.40/30	10.2.231.41 – 10.2.231.42	10.2.231.43
204	10.2.231.44/30	10.2.231.45 – 10.2.231.46	10.2.231.47
205	10.2.231.48/30	10.2.231.49 – 10.2.231.50	10.2.231.51
206	10.2.231.52/30	10.2.231.53 – 10.2.231.54	10.2.231.55
207	10.2.231.56/30	10.2.231.57 – 10.2.231.58	10.2.231.59
208	10.2.231.60/30	10.2.231.61 – 10.2.231.62	10.2.231.63
209	10.2.231.64/30	10.2.231.65 – 10.2.231.66	10.2.231.67
210	10.2.231.68/30	10.2.231.69 – 10.2.231.70	10.2.231.71
211	10.2.231.72/30	10.2.231.73 – 10.2.231.74	10.2.231.75
212	10.2.231.76/30	10.2.231.77 – 10.2.231.78	10.2.231.79
213	10.2.231.80/30	10.2.231.81 – 10.2.231.82	10.2.231.83
214	10.2.231.84/30	10.2.231.85 – 10.2.231.86	10.2.231.87
215	10.2.231.88/30	10.2.231.89 – 10.2.231.90	10.2.231.91
216	10.2.231.92/30	10.2.231.93 – 10.2.231.94	10.2.231.95
217	10.2.231.96/30	10.2.231.97 – 10.2.231.98	10.2.231.99
218	10.2.231.100/30	10.2.231.101 – 10.2.231.102	10.2.231.103
219	10.2.231.104/30	10.2.231.105 – 10.2.231.106	10.2.231.107
220	10.2.231.108/30	10.2.231.109 – 10.2.231.110	10.2.231.111
221	10.2.231.112/30	10.2.231.113 – 10.2.231.114	10.2.231.115
222	10.2.231.116/30	10.2.231.117 – 10.2.231.118	10.2.231.119
223	10.2.231.120/30	10.2.231.121 – 10.2.231.122	10.2.231.123
224	10.2.231.124/30	10.2.231.125 – 10.2.231.126	10.2.231.127
225	10.2.231.128/30	10.2.231.129 – 10.2.231.130	10.2.231.131
226	10.2.231.132/30	10.2.231.133 – 10.2.231.134	10.2.231.135
227	10.2.231.136/30	10.2.231.137 – 10.2.231.138	10.2.231.139
228	10.2.231.140/30	10.2.231.141 – 10.2.231.142	10.2.231.143
229	10.2.231.144/30	10.2.231.145 – 10.2.231.146	10.2.231.147
230	10.2.231.148/30	10.2.231.149 – 10.2.231.150	10.2.231.151
231	10.2.231.152/30	10.2.231.153 – 10.2.231.154	10.2.231.155
232	10.2.231.156/30	10.2.231.157 – 10.2.231.158	10.2.231.159
233	10.2.231.160/30	10.2.231.161 – 10.2.231.162	10.2.231.163
234	10.2.231.164/30	10.2.231.165 – 10.2.231.166	10.2.231.167
235	10.2.231.168/30	10.2.231.169 – 10.2.231.170	10.2.231.171
236	10.2.231.172/30	10.2.231.173 – 10.2.231.174	10.2.231.175
237	10.2.231.176/30	10.2.231.177 – 10.2.231.178	10.2.231.179
238	10.2.231.180/30	10.2.231.181 – 10.2.231.182	10.2.231.183
239	10.2.231.184/30	10.2.231.185 – 10.2.231.186	10.2.231.187
240	10.2.231.188/30	10.2.231.189 – 10.2.231.190	10.2.231.191
241	10.2.231.192/30	10.2.231.193 – 10.2.231.194	10.2.231.195
242	10.2.231.196/30	10.2.231.197 – 10.2.231.198	10.2.231.199
243	10.2.231.200/30	10.2.231.201 – 10.2.231.202	10.2.231.203
244	10.2.231.204/30	10.2.231.205 – 10.2.231.206	10.2.231.207
245	10.2.231.208/30	10.2.231.209 – 10.2.231.210	10.2.231.211
246	10.2.231.212/30	10.2.231.213 – 10.2.231.214	10.2.231.215
247	10.2.231.216/30	10.2.231.217 – 10.2.231.218	10.2.231.219
248	10.2.231.220/30	10.2.231.221 – 10.2.231.222	10.2.231.223
249	10.2.231.224/30	10.2.231.225 – 10.2.231.226	10.2.231.227
250	10.2.231.228/30	10.2.231.229 – 10.2.231.230	10.2.231.231
251	10.2.231.232/30	10.2.231.233 – 10.2.231.234	10.2.231.235
252	10.2.231.236/30	10.2.231.237 – 10.2.231.238	10.2.231.239
253	10.2.231.240/30	10.2.231.241 – 10.2.231.242	10.2.231.243
254	10.2.231.244/30	10.2.231.245 – 10.2.231.246	10.2.231.247
255	10.2.231.248/30	10.2.231.249 – 10.2.231.250	10.2.231.251
256	10.2.231.252/30	10.2.231.253 – 10.2.231.254	10.2.231.255

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 →