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)10.45.52.0/22

network10.45.52.0/22

broadcast10.45.55.255

first host10.45.52.1

last host10.45.55.254

subnet mask255.255.252.0

wildcard0.0.3.255

addresses1,024

usable hosts1,022

classA

ipcalc 10.45.52.0/22

address00001010.00101101.00110100.00000000

subnet mask11111111.11111111.11111100.00000000

network00001010.00101101.00110100.00000000

broadcast00001010.00101101.00110111.11111111

green = network part, grey = host part

hex0x0a2d3400

decimal170734592

reverse dns0.52.45.10.in-addr.arpa

ipv4-mapped::ffff:a2d:3400

/22 split into /30 · 256 subnets

close ×

#	network	host range	broadcast
1	10.45.52.0/30	10.45.52.1 – 10.45.52.2	10.45.52.3
2	10.45.52.4/30	10.45.52.5 – 10.45.52.6	10.45.52.7
3	10.45.52.8/30	10.45.52.9 – 10.45.52.10	10.45.52.11
4	10.45.52.12/30	10.45.52.13 – 10.45.52.14	10.45.52.15
5	10.45.52.16/30	10.45.52.17 – 10.45.52.18	10.45.52.19
6	10.45.52.20/30	10.45.52.21 – 10.45.52.22	10.45.52.23
7	10.45.52.24/30	10.45.52.25 – 10.45.52.26	10.45.52.27
8	10.45.52.28/30	10.45.52.29 – 10.45.52.30	10.45.52.31
9	10.45.52.32/30	10.45.52.33 – 10.45.52.34	10.45.52.35
10	10.45.52.36/30	10.45.52.37 – 10.45.52.38	10.45.52.39
11	10.45.52.40/30	10.45.52.41 – 10.45.52.42	10.45.52.43
12	10.45.52.44/30	10.45.52.45 – 10.45.52.46	10.45.52.47
13	10.45.52.48/30	10.45.52.49 – 10.45.52.50	10.45.52.51
14	10.45.52.52/30	10.45.52.53 – 10.45.52.54	10.45.52.55
15	10.45.52.56/30	10.45.52.57 – 10.45.52.58	10.45.52.59
16	10.45.52.60/30	10.45.52.61 – 10.45.52.62	10.45.52.63
17	10.45.52.64/30	10.45.52.65 – 10.45.52.66	10.45.52.67
18	10.45.52.68/30	10.45.52.69 – 10.45.52.70	10.45.52.71
19	10.45.52.72/30	10.45.52.73 – 10.45.52.74	10.45.52.75
20	10.45.52.76/30	10.45.52.77 – 10.45.52.78	10.45.52.79
21	10.45.52.80/30	10.45.52.81 – 10.45.52.82	10.45.52.83
22	10.45.52.84/30	10.45.52.85 – 10.45.52.86	10.45.52.87
23	10.45.52.88/30	10.45.52.89 – 10.45.52.90	10.45.52.91
24	10.45.52.92/30	10.45.52.93 – 10.45.52.94	10.45.52.95
25	10.45.52.96/30	10.45.52.97 – 10.45.52.98	10.45.52.99
26	10.45.52.100/30	10.45.52.101 – 10.45.52.102	10.45.52.103
27	10.45.52.104/30	10.45.52.105 – 10.45.52.106	10.45.52.107
28	10.45.52.108/30	10.45.52.109 – 10.45.52.110	10.45.52.111
29	10.45.52.112/30	10.45.52.113 – 10.45.52.114	10.45.52.115
30	10.45.52.116/30	10.45.52.117 – 10.45.52.118	10.45.52.119
31	10.45.52.120/30	10.45.52.121 – 10.45.52.122	10.45.52.123
32	10.45.52.124/30	10.45.52.125 – 10.45.52.126	10.45.52.127
33	10.45.52.128/30	10.45.52.129 – 10.45.52.130	10.45.52.131
34	10.45.52.132/30	10.45.52.133 – 10.45.52.134	10.45.52.135
35	10.45.52.136/30	10.45.52.137 – 10.45.52.138	10.45.52.139
36	10.45.52.140/30	10.45.52.141 – 10.45.52.142	10.45.52.143
37	10.45.52.144/30	10.45.52.145 – 10.45.52.146	10.45.52.147
38	10.45.52.148/30	10.45.52.149 – 10.45.52.150	10.45.52.151
39	10.45.52.152/30	10.45.52.153 – 10.45.52.154	10.45.52.155
40	10.45.52.156/30	10.45.52.157 – 10.45.52.158	10.45.52.159
41	10.45.52.160/30	10.45.52.161 – 10.45.52.162	10.45.52.163
42	10.45.52.164/30	10.45.52.165 – 10.45.52.166	10.45.52.167
43	10.45.52.168/30	10.45.52.169 – 10.45.52.170	10.45.52.171
44	10.45.52.172/30	10.45.52.173 – 10.45.52.174	10.45.52.175
45	10.45.52.176/30	10.45.52.177 – 10.45.52.178	10.45.52.179
46	10.45.52.180/30	10.45.52.181 – 10.45.52.182	10.45.52.183
47	10.45.52.184/30	10.45.52.185 – 10.45.52.186	10.45.52.187
48	10.45.52.188/30	10.45.52.189 – 10.45.52.190	10.45.52.191
49	10.45.52.192/30	10.45.52.193 – 10.45.52.194	10.45.52.195
50	10.45.52.196/30	10.45.52.197 – 10.45.52.198	10.45.52.199
51	10.45.52.200/30	10.45.52.201 – 10.45.52.202	10.45.52.203
52	10.45.52.204/30	10.45.52.205 – 10.45.52.206	10.45.52.207
53	10.45.52.208/30	10.45.52.209 – 10.45.52.210	10.45.52.211
54	10.45.52.212/30	10.45.52.213 – 10.45.52.214	10.45.52.215
55	10.45.52.216/30	10.45.52.217 – 10.45.52.218	10.45.52.219
56	10.45.52.220/30	10.45.52.221 – 10.45.52.222	10.45.52.223
57	10.45.52.224/30	10.45.52.225 – 10.45.52.226	10.45.52.227
58	10.45.52.228/30	10.45.52.229 – 10.45.52.230	10.45.52.231
59	10.45.52.232/30	10.45.52.233 – 10.45.52.234	10.45.52.235
60	10.45.52.236/30	10.45.52.237 – 10.45.52.238	10.45.52.239
61	10.45.52.240/30	10.45.52.241 – 10.45.52.242	10.45.52.243
62	10.45.52.244/30	10.45.52.245 – 10.45.52.246	10.45.52.247
63	10.45.52.248/30	10.45.52.249 – 10.45.52.250	10.45.52.251
64	10.45.52.252/30	10.45.52.253 – 10.45.52.254	10.45.52.255
65	10.45.53.0/30	10.45.53.1 – 10.45.53.2	10.45.53.3
66	10.45.53.4/30	10.45.53.5 – 10.45.53.6	10.45.53.7
67	10.45.53.8/30	10.45.53.9 – 10.45.53.10	10.45.53.11
68	10.45.53.12/30	10.45.53.13 – 10.45.53.14	10.45.53.15
69	10.45.53.16/30	10.45.53.17 – 10.45.53.18	10.45.53.19
70	10.45.53.20/30	10.45.53.21 – 10.45.53.22	10.45.53.23
71	10.45.53.24/30	10.45.53.25 – 10.45.53.26	10.45.53.27
72	10.45.53.28/30	10.45.53.29 – 10.45.53.30	10.45.53.31
73	10.45.53.32/30	10.45.53.33 – 10.45.53.34	10.45.53.35
74	10.45.53.36/30	10.45.53.37 – 10.45.53.38	10.45.53.39
75	10.45.53.40/30	10.45.53.41 – 10.45.53.42	10.45.53.43
76	10.45.53.44/30	10.45.53.45 – 10.45.53.46	10.45.53.47
77	10.45.53.48/30	10.45.53.49 – 10.45.53.50	10.45.53.51
78	10.45.53.52/30	10.45.53.53 – 10.45.53.54	10.45.53.55
79	10.45.53.56/30	10.45.53.57 – 10.45.53.58	10.45.53.59
80	10.45.53.60/30	10.45.53.61 – 10.45.53.62	10.45.53.63
81	10.45.53.64/30	10.45.53.65 – 10.45.53.66	10.45.53.67
82	10.45.53.68/30	10.45.53.69 – 10.45.53.70	10.45.53.71
83	10.45.53.72/30	10.45.53.73 – 10.45.53.74	10.45.53.75
84	10.45.53.76/30	10.45.53.77 – 10.45.53.78	10.45.53.79
85	10.45.53.80/30	10.45.53.81 – 10.45.53.82	10.45.53.83
86	10.45.53.84/30	10.45.53.85 – 10.45.53.86	10.45.53.87
87	10.45.53.88/30	10.45.53.89 – 10.45.53.90	10.45.53.91
88	10.45.53.92/30	10.45.53.93 – 10.45.53.94	10.45.53.95
89	10.45.53.96/30	10.45.53.97 – 10.45.53.98	10.45.53.99
90	10.45.53.100/30	10.45.53.101 – 10.45.53.102	10.45.53.103
91	10.45.53.104/30	10.45.53.105 – 10.45.53.106	10.45.53.107
92	10.45.53.108/30	10.45.53.109 – 10.45.53.110	10.45.53.111
93	10.45.53.112/30	10.45.53.113 – 10.45.53.114	10.45.53.115
94	10.45.53.116/30	10.45.53.117 – 10.45.53.118	10.45.53.119
95	10.45.53.120/30	10.45.53.121 – 10.45.53.122	10.45.53.123
96	10.45.53.124/30	10.45.53.125 – 10.45.53.126	10.45.53.127
97	10.45.53.128/30	10.45.53.129 – 10.45.53.130	10.45.53.131
98	10.45.53.132/30	10.45.53.133 – 10.45.53.134	10.45.53.135
99	10.45.53.136/30	10.45.53.137 – 10.45.53.138	10.45.53.139
100	10.45.53.140/30	10.45.53.141 – 10.45.53.142	10.45.53.143
101	10.45.53.144/30	10.45.53.145 – 10.45.53.146	10.45.53.147
102	10.45.53.148/30	10.45.53.149 – 10.45.53.150	10.45.53.151
103	10.45.53.152/30	10.45.53.153 – 10.45.53.154	10.45.53.155
104	10.45.53.156/30	10.45.53.157 – 10.45.53.158	10.45.53.159
105	10.45.53.160/30	10.45.53.161 – 10.45.53.162	10.45.53.163
106	10.45.53.164/30	10.45.53.165 – 10.45.53.166	10.45.53.167
107	10.45.53.168/30	10.45.53.169 – 10.45.53.170	10.45.53.171
108	10.45.53.172/30	10.45.53.173 – 10.45.53.174	10.45.53.175
109	10.45.53.176/30	10.45.53.177 – 10.45.53.178	10.45.53.179
110	10.45.53.180/30	10.45.53.181 – 10.45.53.182	10.45.53.183
111	10.45.53.184/30	10.45.53.185 – 10.45.53.186	10.45.53.187
112	10.45.53.188/30	10.45.53.189 – 10.45.53.190	10.45.53.191
113	10.45.53.192/30	10.45.53.193 – 10.45.53.194	10.45.53.195
114	10.45.53.196/30	10.45.53.197 – 10.45.53.198	10.45.53.199
115	10.45.53.200/30	10.45.53.201 – 10.45.53.202	10.45.53.203
116	10.45.53.204/30	10.45.53.205 – 10.45.53.206	10.45.53.207
117	10.45.53.208/30	10.45.53.209 – 10.45.53.210	10.45.53.211
118	10.45.53.212/30	10.45.53.213 – 10.45.53.214	10.45.53.215
119	10.45.53.216/30	10.45.53.217 – 10.45.53.218	10.45.53.219
120	10.45.53.220/30	10.45.53.221 – 10.45.53.222	10.45.53.223
121	10.45.53.224/30	10.45.53.225 – 10.45.53.226	10.45.53.227
122	10.45.53.228/30	10.45.53.229 – 10.45.53.230	10.45.53.231
123	10.45.53.232/30	10.45.53.233 – 10.45.53.234	10.45.53.235
124	10.45.53.236/30	10.45.53.237 – 10.45.53.238	10.45.53.239
125	10.45.53.240/30	10.45.53.241 – 10.45.53.242	10.45.53.243
126	10.45.53.244/30	10.45.53.245 – 10.45.53.246	10.45.53.247
127	10.45.53.248/30	10.45.53.249 – 10.45.53.250	10.45.53.251
128	10.45.53.252/30	10.45.53.253 – 10.45.53.254	10.45.53.255
129	10.45.54.0/30	10.45.54.1 – 10.45.54.2	10.45.54.3
130	10.45.54.4/30	10.45.54.5 – 10.45.54.6	10.45.54.7
131	10.45.54.8/30	10.45.54.9 – 10.45.54.10	10.45.54.11
132	10.45.54.12/30	10.45.54.13 – 10.45.54.14	10.45.54.15
133	10.45.54.16/30	10.45.54.17 – 10.45.54.18	10.45.54.19
134	10.45.54.20/30	10.45.54.21 – 10.45.54.22	10.45.54.23
135	10.45.54.24/30	10.45.54.25 – 10.45.54.26	10.45.54.27
136	10.45.54.28/30	10.45.54.29 – 10.45.54.30	10.45.54.31
137	10.45.54.32/30	10.45.54.33 – 10.45.54.34	10.45.54.35
138	10.45.54.36/30	10.45.54.37 – 10.45.54.38	10.45.54.39
139	10.45.54.40/30	10.45.54.41 – 10.45.54.42	10.45.54.43
140	10.45.54.44/30	10.45.54.45 – 10.45.54.46	10.45.54.47
141	10.45.54.48/30	10.45.54.49 – 10.45.54.50	10.45.54.51
142	10.45.54.52/30	10.45.54.53 – 10.45.54.54	10.45.54.55
143	10.45.54.56/30	10.45.54.57 – 10.45.54.58	10.45.54.59
144	10.45.54.60/30	10.45.54.61 – 10.45.54.62	10.45.54.63
145	10.45.54.64/30	10.45.54.65 – 10.45.54.66	10.45.54.67
146	10.45.54.68/30	10.45.54.69 – 10.45.54.70	10.45.54.71
147	10.45.54.72/30	10.45.54.73 – 10.45.54.74	10.45.54.75
148	10.45.54.76/30	10.45.54.77 – 10.45.54.78	10.45.54.79
149	10.45.54.80/30	10.45.54.81 – 10.45.54.82	10.45.54.83
150	10.45.54.84/30	10.45.54.85 – 10.45.54.86	10.45.54.87
151	10.45.54.88/30	10.45.54.89 – 10.45.54.90	10.45.54.91
152	10.45.54.92/30	10.45.54.93 – 10.45.54.94	10.45.54.95
153	10.45.54.96/30	10.45.54.97 – 10.45.54.98	10.45.54.99
154	10.45.54.100/30	10.45.54.101 – 10.45.54.102	10.45.54.103
155	10.45.54.104/30	10.45.54.105 – 10.45.54.106	10.45.54.107
156	10.45.54.108/30	10.45.54.109 – 10.45.54.110	10.45.54.111
157	10.45.54.112/30	10.45.54.113 – 10.45.54.114	10.45.54.115
158	10.45.54.116/30	10.45.54.117 – 10.45.54.118	10.45.54.119
159	10.45.54.120/30	10.45.54.121 – 10.45.54.122	10.45.54.123
160	10.45.54.124/30	10.45.54.125 – 10.45.54.126	10.45.54.127
161	10.45.54.128/30	10.45.54.129 – 10.45.54.130	10.45.54.131
162	10.45.54.132/30	10.45.54.133 – 10.45.54.134	10.45.54.135
163	10.45.54.136/30	10.45.54.137 – 10.45.54.138	10.45.54.139
164	10.45.54.140/30	10.45.54.141 – 10.45.54.142	10.45.54.143
165	10.45.54.144/30	10.45.54.145 – 10.45.54.146	10.45.54.147
166	10.45.54.148/30	10.45.54.149 – 10.45.54.150	10.45.54.151
167	10.45.54.152/30	10.45.54.153 – 10.45.54.154	10.45.54.155
168	10.45.54.156/30	10.45.54.157 – 10.45.54.158	10.45.54.159
169	10.45.54.160/30	10.45.54.161 – 10.45.54.162	10.45.54.163
170	10.45.54.164/30	10.45.54.165 – 10.45.54.166	10.45.54.167
171	10.45.54.168/30	10.45.54.169 – 10.45.54.170	10.45.54.171
172	10.45.54.172/30	10.45.54.173 – 10.45.54.174	10.45.54.175
173	10.45.54.176/30	10.45.54.177 – 10.45.54.178	10.45.54.179
174	10.45.54.180/30	10.45.54.181 – 10.45.54.182	10.45.54.183
175	10.45.54.184/30	10.45.54.185 – 10.45.54.186	10.45.54.187
176	10.45.54.188/30	10.45.54.189 – 10.45.54.190	10.45.54.191
177	10.45.54.192/30	10.45.54.193 – 10.45.54.194	10.45.54.195
178	10.45.54.196/30	10.45.54.197 – 10.45.54.198	10.45.54.199
179	10.45.54.200/30	10.45.54.201 – 10.45.54.202	10.45.54.203
180	10.45.54.204/30	10.45.54.205 – 10.45.54.206	10.45.54.207
181	10.45.54.208/30	10.45.54.209 – 10.45.54.210	10.45.54.211
182	10.45.54.212/30	10.45.54.213 – 10.45.54.214	10.45.54.215
183	10.45.54.216/30	10.45.54.217 – 10.45.54.218	10.45.54.219
184	10.45.54.220/30	10.45.54.221 – 10.45.54.222	10.45.54.223
185	10.45.54.224/30	10.45.54.225 – 10.45.54.226	10.45.54.227
186	10.45.54.228/30	10.45.54.229 – 10.45.54.230	10.45.54.231
187	10.45.54.232/30	10.45.54.233 – 10.45.54.234	10.45.54.235
188	10.45.54.236/30	10.45.54.237 – 10.45.54.238	10.45.54.239
189	10.45.54.240/30	10.45.54.241 – 10.45.54.242	10.45.54.243
190	10.45.54.244/30	10.45.54.245 – 10.45.54.246	10.45.54.247
191	10.45.54.248/30	10.45.54.249 – 10.45.54.250	10.45.54.251
192	10.45.54.252/30	10.45.54.253 – 10.45.54.254	10.45.54.255
193	10.45.55.0/30	10.45.55.1 – 10.45.55.2	10.45.55.3
194	10.45.55.4/30	10.45.55.5 – 10.45.55.6	10.45.55.7
195	10.45.55.8/30	10.45.55.9 – 10.45.55.10	10.45.55.11
196	10.45.55.12/30	10.45.55.13 – 10.45.55.14	10.45.55.15
197	10.45.55.16/30	10.45.55.17 – 10.45.55.18	10.45.55.19
198	10.45.55.20/30	10.45.55.21 – 10.45.55.22	10.45.55.23
199	10.45.55.24/30	10.45.55.25 – 10.45.55.26	10.45.55.27
200	10.45.55.28/30	10.45.55.29 – 10.45.55.30	10.45.55.31
201	10.45.55.32/30	10.45.55.33 – 10.45.55.34	10.45.55.35
202	10.45.55.36/30	10.45.55.37 – 10.45.55.38	10.45.55.39
203	10.45.55.40/30	10.45.55.41 – 10.45.55.42	10.45.55.43
204	10.45.55.44/30	10.45.55.45 – 10.45.55.46	10.45.55.47
205	10.45.55.48/30	10.45.55.49 – 10.45.55.50	10.45.55.51
206	10.45.55.52/30	10.45.55.53 – 10.45.55.54	10.45.55.55
207	10.45.55.56/30	10.45.55.57 – 10.45.55.58	10.45.55.59
208	10.45.55.60/30	10.45.55.61 – 10.45.55.62	10.45.55.63
209	10.45.55.64/30	10.45.55.65 – 10.45.55.66	10.45.55.67
210	10.45.55.68/30	10.45.55.69 – 10.45.55.70	10.45.55.71
211	10.45.55.72/30	10.45.55.73 – 10.45.55.74	10.45.55.75
212	10.45.55.76/30	10.45.55.77 – 10.45.55.78	10.45.55.79
213	10.45.55.80/30	10.45.55.81 – 10.45.55.82	10.45.55.83
214	10.45.55.84/30	10.45.55.85 – 10.45.55.86	10.45.55.87
215	10.45.55.88/30	10.45.55.89 – 10.45.55.90	10.45.55.91
216	10.45.55.92/30	10.45.55.93 – 10.45.55.94	10.45.55.95
217	10.45.55.96/30	10.45.55.97 – 10.45.55.98	10.45.55.99
218	10.45.55.100/30	10.45.55.101 – 10.45.55.102	10.45.55.103
219	10.45.55.104/30	10.45.55.105 – 10.45.55.106	10.45.55.107
220	10.45.55.108/30	10.45.55.109 – 10.45.55.110	10.45.55.111
221	10.45.55.112/30	10.45.55.113 – 10.45.55.114	10.45.55.115
222	10.45.55.116/30	10.45.55.117 – 10.45.55.118	10.45.55.119
223	10.45.55.120/30	10.45.55.121 – 10.45.55.122	10.45.55.123
224	10.45.55.124/30	10.45.55.125 – 10.45.55.126	10.45.55.127
225	10.45.55.128/30	10.45.55.129 – 10.45.55.130	10.45.55.131
226	10.45.55.132/30	10.45.55.133 – 10.45.55.134	10.45.55.135
227	10.45.55.136/30	10.45.55.137 – 10.45.55.138	10.45.55.139
228	10.45.55.140/30	10.45.55.141 – 10.45.55.142	10.45.55.143
229	10.45.55.144/30	10.45.55.145 – 10.45.55.146	10.45.55.147
230	10.45.55.148/30	10.45.55.149 – 10.45.55.150	10.45.55.151
231	10.45.55.152/30	10.45.55.153 – 10.45.55.154	10.45.55.155
232	10.45.55.156/30	10.45.55.157 – 10.45.55.158	10.45.55.159
233	10.45.55.160/30	10.45.55.161 – 10.45.55.162	10.45.55.163
234	10.45.55.164/30	10.45.55.165 – 10.45.55.166	10.45.55.167
235	10.45.55.168/30	10.45.55.169 – 10.45.55.170	10.45.55.171
236	10.45.55.172/30	10.45.55.173 – 10.45.55.174	10.45.55.175
237	10.45.55.176/30	10.45.55.177 – 10.45.55.178	10.45.55.179
238	10.45.55.180/30	10.45.55.181 – 10.45.55.182	10.45.55.183
239	10.45.55.184/30	10.45.55.185 – 10.45.55.186	10.45.55.187
240	10.45.55.188/30	10.45.55.189 – 10.45.55.190	10.45.55.191
241	10.45.55.192/30	10.45.55.193 – 10.45.55.194	10.45.55.195
242	10.45.55.196/30	10.45.55.197 – 10.45.55.198	10.45.55.199
243	10.45.55.200/30	10.45.55.201 – 10.45.55.202	10.45.55.203
244	10.45.55.204/30	10.45.55.205 – 10.45.55.206	10.45.55.207
245	10.45.55.208/30	10.45.55.209 – 10.45.55.210	10.45.55.211
246	10.45.55.212/30	10.45.55.213 – 10.45.55.214	10.45.55.215
247	10.45.55.216/30	10.45.55.217 – 10.45.55.218	10.45.55.219
248	10.45.55.220/30	10.45.55.221 – 10.45.55.222	10.45.55.223
249	10.45.55.224/30	10.45.55.225 – 10.45.55.226	10.45.55.227
250	10.45.55.228/30	10.45.55.229 – 10.45.55.230	10.45.55.231
251	10.45.55.232/30	10.45.55.233 – 10.45.55.234	10.45.55.235
252	10.45.55.236/30	10.45.55.237 – 10.45.55.238	10.45.55.239
253	10.45.55.240/30	10.45.55.241 – 10.45.55.242	10.45.55.243
254	10.45.55.244/30	10.45.55.245 – 10.45.55.246	10.45.55.247
255	10.45.55.248/30	10.45.55.249 – 10.45.55.250	10.45.55.251
256	10.45.55.252/30	10.45.55.253 – 10.45.55.254	10.45.55.255

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 →