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)10.22.160.0/19

network10.22.160.0/19

broadcast10.22.191.255

first host10.22.160.1

last host10.22.191.254

subnet mask255.255.224.0

wildcard0.0.31.255

addresses8,192

usable hosts8,190

classA

ipcalc 10.22.160.0/19

address00001010.00010110.10100000.00000000

subnet mask11111111.11111111.11100000.00000000

network00001010.00010110.10100000.00000000

broadcast00001010.00010110.10111111.11111111

green = network part, grey = host part

hex0x0a16a000

decimal169254912

reverse dns0.160.22.10.in-addr.arpa

ipv4-mapped::ffff:a16:a000

/19 split into /29 · 1,024 subnets

close ×

#	network	host range	broadcast
1	10.22.160.0/29	10.22.160.1 – 10.22.160.6	10.22.160.7
2	10.22.160.8/29	10.22.160.9 – 10.22.160.14	10.22.160.15
3	10.22.160.16/29	10.22.160.17 – 10.22.160.22	10.22.160.23
4	10.22.160.24/29	10.22.160.25 – 10.22.160.30	10.22.160.31
5	10.22.160.32/29	10.22.160.33 – 10.22.160.38	10.22.160.39
6	10.22.160.40/29	10.22.160.41 – 10.22.160.46	10.22.160.47
7	10.22.160.48/29	10.22.160.49 – 10.22.160.54	10.22.160.55
8	10.22.160.56/29	10.22.160.57 – 10.22.160.62	10.22.160.63
9	10.22.160.64/29	10.22.160.65 – 10.22.160.70	10.22.160.71
10	10.22.160.72/29	10.22.160.73 – 10.22.160.78	10.22.160.79
11	10.22.160.80/29	10.22.160.81 – 10.22.160.86	10.22.160.87
12	10.22.160.88/29	10.22.160.89 – 10.22.160.94	10.22.160.95
13	10.22.160.96/29	10.22.160.97 – 10.22.160.102	10.22.160.103
14	10.22.160.104/29	10.22.160.105 – 10.22.160.110	10.22.160.111
15	10.22.160.112/29	10.22.160.113 – 10.22.160.118	10.22.160.119
16	10.22.160.120/29	10.22.160.121 – 10.22.160.126	10.22.160.127
17	10.22.160.128/29	10.22.160.129 – 10.22.160.134	10.22.160.135
18	10.22.160.136/29	10.22.160.137 – 10.22.160.142	10.22.160.143
19	10.22.160.144/29	10.22.160.145 – 10.22.160.150	10.22.160.151
20	10.22.160.152/29	10.22.160.153 – 10.22.160.158	10.22.160.159
21	10.22.160.160/29	10.22.160.161 – 10.22.160.166	10.22.160.167
22	10.22.160.168/29	10.22.160.169 – 10.22.160.174	10.22.160.175
23	10.22.160.176/29	10.22.160.177 – 10.22.160.182	10.22.160.183
24	10.22.160.184/29	10.22.160.185 – 10.22.160.190	10.22.160.191
25	10.22.160.192/29	10.22.160.193 – 10.22.160.198	10.22.160.199
26	10.22.160.200/29	10.22.160.201 – 10.22.160.206	10.22.160.207
27	10.22.160.208/29	10.22.160.209 – 10.22.160.214	10.22.160.215
28	10.22.160.216/29	10.22.160.217 – 10.22.160.222	10.22.160.223
29	10.22.160.224/29	10.22.160.225 – 10.22.160.230	10.22.160.231
30	10.22.160.232/29	10.22.160.233 – 10.22.160.238	10.22.160.239
31	10.22.160.240/29	10.22.160.241 – 10.22.160.246	10.22.160.247
32	10.22.160.248/29	10.22.160.249 – 10.22.160.254	10.22.160.255
33	10.22.161.0/29	10.22.161.1 – 10.22.161.6	10.22.161.7
34	10.22.161.8/29	10.22.161.9 – 10.22.161.14	10.22.161.15
35	10.22.161.16/29	10.22.161.17 – 10.22.161.22	10.22.161.23
36	10.22.161.24/29	10.22.161.25 – 10.22.161.30	10.22.161.31
37	10.22.161.32/29	10.22.161.33 – 10.22.161.38	10.22.161.39
38	10.22.161.40/29	10.22.161.41 – 10.22.161.46	10.22.161.47
39	10.22.161.48/29	10.22.161.49 – 10.22.161.54	10.22.161.55
40	10.22.161.56/29	10.22.161.57 – 10.22.161.62	10.22.161.63
41	10.22.161.64/29	10.22.161.65 – 10.22.161.70	10.22.161.71
42	10.22.161.72/29	10.22.161.73 – 10.22.161.78	10.22.161.79
43	10.22.161.80/29	10.22.161.81 – 10.22.161.86	10.22.161.87
44	10.22.161.88/29	10.22.161.89 – 10.22.161.94	10.22.161.95
45	10.22.161.96/29	10.22.161.97 – 10.22.161.102	10.22.161.103
46	10.22.161.104/29	10.22.161.105 – 10.22.161.110	10.22.161.111
47	10.22.161.112/29	10.22.161.113 – 10.22.161.118	10.22.161.119
48	10.22.161.120/29	10.22.161.121 – 10.22.161.126	10.22.161.127
49	10.22.161.128/29	10.22.161.129 – 10.22.161.134	10.22.161.135
50	10.22.161.136/29	10.22.161.137 – 10.22.161.142	10.22.161.143
51	10.22.161.144/29	10.22.161.145 – 10.22.161.150	10.22.161.151
52	10.22.161.152/29	10.22.161.153 – 10.22.161.158	10.22.161.159
53	10.22.161.160/29	10.22.161.161 – 10.22.161.166	10.22.161.167
54	10.22.161.168/29	10.22.161.169 – 10.22.161.174	10.22.161.175
55	10.22.161.176/29	10.22.161.177 – 10.22.161.182	10.22.161.183
56	10.22.161.184/29	10.22.161.185 – 10.22.161.190	10.22.161.191
57	10.22.161.192/29	10.22.161.193 – 10.22.161.198	10.22.161.199
58	10.22.161.200/29	10.22.161.201 – 10.22.161.206	10.22.161.207
59	10.22.161.208/29	10.22.161.209 – 10.22.161.214	10.22.161.215
60	10.22.161.216/29	10.22.161.217 – 10.22.161.222	10.22.161.223
61	10.22.161.224/29	10.22.161.225 – 10.22.161.230	10.22.161.231
62	10.22.161.232/29	10.22.161.233 – 10.22.161.238	10.22.161.239
63	10.22.161.240/29	10.22.161.241 – 10.22.161.246	10.22.161.247
64	10.22.161.248/29	10.22.161.249 – 10.22.161.254	10.22.161.255
65	10.22.162.0/29	10.22.162.1 – 10.22.162.6	10.22.162.7
66	10.22.162.8/29	10.22.162.9 – 10.22.162.14	10.22.162.15
67	10.22.162.16/29	10.22.162.17 – 10.22.162.22	10.22.162.23
68	10.22.162.24/29	10.22.162.25 – 10.22.162.30	10.22.162.31
69	10.22.162.32/29	10.22.162.33 – 10.22.162.38	10.22.162.39
70	10.22.162.40/29	10.22.162.41 – 10.22.162.46	10.22.162.47
71	10.22.162.48/29	10.22.162.49 – 10.22.162.54	10.22.162.55
72	10.22.162.56/29	10.22.162.57 – 10.22.162.62	10.22.162.63
73	10.22.162.64/29	10.22.162.65 – 10.22.162.70	10.22.162.71
74	10.22.162.72/29	10.22.162.73 – 10.22.162.78	10.22.162.79
75	10.22.162.80/29	10.22.162.81 – 10.22.162.86	10.22.162.87
76	10.22.162.88/29	10.22.162.89 – 10.22.162.94	10.22.162.95
77	10.22.162.96/29	10.22.162.97 – 10.22.162.102	10.22.162.103
78	10.22.162.104/29	10.22.162.105 – 10.22.162.110	10.22.162.111
79	10.22.162.112/29	10.22.162.113 – 10.22.162.118	10.22.162.119
80	10.22.162.120/29	10.22.162.121 – 10.22.162.126	10.22.162.127
81	10.22.162.128/29	10.22.162.129 – 10.22.162.134	10.22.162.135
82	10.22.162.136/29	10.22.162.137 – 10.22.162.142	10.22.162.143
83	10.22.162.144/29	10.22.162.145 – 10.22.162.150	10.22.162.151
84	10.22.162.152/29	10.22.162.153 – 10.22.162.158	10.22.162.159
85	10.22.162.160/29	10.22.162.161 – 10.22.162.166	10.22.162.167
86	10.22.162.168/29	10.22.162.169 – 10.22.162.174	10.22.162.175
87	10.22.162.176/29	10.22.162.177 – 10.22.162.182	10.22.162.183
88	10.22.162.184/29	10.22.162.185 – 10.22.162.190	10.22.162.191
89	10.22.162.192/29	10.22.162.193 – 10.22.162.198	10.22.162.199
90	10.22.162.200/29	10.22.162.201 – 10.22.162.206	10.22.162.207
91	10.22.162.208/29	10.22.162.209 – 10.22.162.214	10.22.162.215
92	10.22.162.216/29	10.22.162.217 – 10.22.162.222	10.22.162.223
93	10.22.162.224/29	10.22.162.225 – 10.22.162.230	10.22.162.231
94	10.22.162.232/29	10.22.162.233 – 10.22.162.238	10.22.162.239
95	10.22.162.240/29	10.22.162.241 – 10.22.162.246	10.22.162.247
96	10.22.162.248/29	10.22.162.249 – 10.22.162.254	10.22.162.255
97	10.22.163.0/29	10.22.163.1 – 10.22.163.6	10.22.163.7
98	10.22.163.8/29	10.22.163.9 – 10.22.163.14	10.22.163.15
99	10.22.163.16/29	10.22.163.17 – 10.22.163.22	10.22.163.23
100	10.22.163.24/29	10.22.163.25 – 10.22.163.30	10.22.163.31
101	10.22.163.32/29	10.22.163.33 – 10.22.163.38	10.22.163.39
102	10.22.163.40/29	10.22.163.41 – 10.22.163.46	10.22.163.47
103	10.22.163.48/29	10.22.163.49 – 10.22.163.54	10.22.163.55
104	10.22.163.56/29	10.22.163.57 – 10.22.163.62	10.22.163.63
105	10.22.163.64/29	10.22.163.65 – 10.22.163.70	10.22.163.71
106	10.22.163.72/29	10.22.163.73 – 10.22.163.78	10.22.163.79
107	10.22.163.80/29	10.22.163.81 – 10.22.163.86	10.22.163.87
108	10.22.163.88/29	10.22.163.89 – 10.22.163.94	10.22.163.95
109	10.22.163.96/29	10.22.163.97 – 10.22.163.102	10.22.163.103
110	10.22.163.104/29	10.22.163.105 – 10.22.163.110	10.22.163.111
111	10.22.163.112/29	10.22.163.113 – 10.22.163.118	10.22.163.119
112	10.22.163.120/29	10.22.163.121 – 10.22.163.126	10.22.163.127
113	10.22.163.128/29	10.22.163.129 – 10.22.163.134	10.22.163.135
114	10.22.163.136/29	10.22.163.137 – 10.22.163.142	10.22.163.143
115	10.22.163.144/29	10.22.163.145 – 10.22.163.150	10.22.163.151
116	10.22.163.152/29	10.22.163.153 – 10.22.163.158	10.22.163.159
117	10.22.163.160/29	10.22.163.161 – 10.22.163.166	10.22.163.167
118	10.22.163.168/29	10.22.163.169 – 10.22.163.174	10.22.163.175
119	10.22.163.176/29	10.22.163.177 – 10.22.163.182	10.22.163.183
120	10.22.163.184/29	10.22.163.185 – 10.22.163.190	10.22.163.191
121	10.22.163.192/29	10.22.163.193 – 10.22.163.198	10.22.163.199
122	10.22.163.200/29	10.22.163.201 – 10.22.163.206	10.22.163.207
123	10.22.163.208/29	10.22.163.209 – 10.22.163.214	10.22.163.215
124	10.22.163.216/29	10.22.163.217 – 10.22.163.222	10.22.163.223
125	10.22.163.224/29	10.22.163.225 – 10.22.163.230	10.22.163.231
126	10.22.163.232/29	10.22.163.233 – 10.22.163.238	10.22.163.239
127	10.22.163.240/29	10.22.163.241 – 10.22.163.246	10.22.163.247
128	10.22.163.248/29	10.22.163.249 – 10.22.163.254	10.22.163.255
129	10.22.164.0/29	10.22.164.1 – 10.22.164.6	10.22.164.7
130	10.22.164.8/29	10.22.164.9 – 10.22.164.14	10.22.164.15
131	10.22.164.16/29	10.22.164.17 – 10.22.164.22	10.22.164.23
132	10.22.164.24/29	10.22.164.25 – 10.22.164.30	10.22.164.31
133	10.22.164.32/29	10.22.164.33 – 10.22.164.38	10.22.164.39
134	10.22.164.40/29	10.22.164.41 – 10.22.164.46	10.22.164.47
135	10.22.164.48/29	10.22.164.49 – 10.22.164.54	10.22.164.55
136	10.22.164.56/29	10.22.164.57 – 10.22.164.62	10.22.164.63
137	10.22.164.64/29	10.22.164.65 – 10.22.164.70	10.22.164.71
138	10.22.164.72/29	10.22.164.73 – 10.22.164.78	10.22.164.79
139	10.22.164.80/29	10.22.164.81 – 10.22.164.86	10.22.164.87
140	10.22.164.88/29	10.22.164.89 – 10.22.164.94	10.22.164.95
141	10.22.164.96/29	10.22.164.97 – 10.22.164.102	10.22.164.103
142	10.22.164.104/29	10.22.164.105 – 10.22.164.110	10.22.164.111
143	10.22.164.112/29	10.22.164.113 – 10.22.164.118	10.22.164.119
144	10.22.164.120/29	10.22.164.121 – 10.22.164.126	10.22.164.127
145	10.22.164.128/29	10.22.164.129 – 10.22.164.134	10.22.164.135
146	10.22.164.136/29	10.22.164.137 – 10.22.164.142	10.22.164.143
147	10.22.164.144/29	10.22.164.145 – 10.22.164.150	10.22.164.151
148	10.22.164.152/29	10.22.164.153 – 10.22.164.158	10.22.164.159
149	10.22.164.160/29	10.22.164.161 – 10.22.164.166	10.22.164.167
150	10.22.164.168/29	10.22.164.169 – 10.22.164.174	10.22.164.175
151	10.22.164.176/29	10.22.164.177 – 10.22.164.182	10.22.164.183
152	10.22.164.184/29	10.22.164.185 – 10.22.164.190	10.22.164.191
153	10.22.164.192/29	10.22.164.193 – 10.22.164.198	10.22.164.199
154	10.22.164.200/29	10.22.164.201 – 10.22.164.206	10.22.164.207
155	10.22.164.208/29	10.22.164.209 – 10.22.164.214	10.22.164.215
156	10.22.164.216/29	10.22.164.217 – 10.22.164.222	10.22.164.223
157	10.22.164.224/29	10.22.164.225 – 10.22.164.230	10.22.164.231
158	10.22.164.232/29	10.22.164.233 – 10.22.164.238	10.22.164.239
159	10.22.164.240/29	10.22.164.241 – 10.22.164.246	10.22.164.247
160	10.22.164.248/29	10.22.164.249 – 10.22.164.254	10.22.164.255
161	10.22.165.0/29	10.22.165.1 – 10.22.165.6	10.22.165.7
162	10.22.165.8/29	10.22.165.9 – 10.22.165.14	10.22.165.15
163	10.22.165.16/29	10.22.165.17 – 10.22.165.22	10.22.165.23
164	10.22.165.24/29	10.22.165.25 – 10.22.165.30	10.22.165.31
165	10.22.165.32/29	10.22.165.33 – 10.22.165.38	10.22.165.39
166	10.22.165.40/29	10.22.165.41 – 10.22.165.46	10.22.165.47
167	10.22.165.48/29	10.22.165.49 – 10.22.165.54	10.22.165.55
168	10.22.165.56/29	10.22.165.57 – 10.22.165.62	10.22.165.63
169	10.22.165.64/29	10.22.165.65 – 10.22.165.70	10.22.165.71
170	10.22.165.72/29	10.22.165.73 – 10.22.165.78	10.22.165.79
171	10.22.165.80/29	10.22.165.81 – 10.22.165.86	10.22.165.87
172	10.22.165.88/29	10.22.165.89 – 10.22.165.94	10.22.165.95
173	10.22.165.96/29	10.22.165.97 – 10.22.165.102	10.22.165.103
174	10.22.165.104/29	10.22.165.105 – 10.22.165.110	10.22.165.111
175	10.22.165.112/29	10.22.165.113 – 10.22.165.118	10.22.165.119
176	10.22.165.120/29	10.22.165.121 – 10.22.165.126	10.22.165.127
177	10.22.165.128/29	10.22.165.129 – 10.22.165.134	10.22.165.135
178	10.22.165.136/29	10.22.165.137 – 10.22.165.142	10.22.165.143
179	10.22.165.144/29	10.22.165.145 – 10.22.165.150	10.22.165.151
180	10.22.165.152/29	10.22.165.153 – 10.22.165.158	10.22.165.159
181	10.22.165.160/29	10.22.165.161 – 10.22.165.166	10.22.165.167
182	10.22.165.168/29	10.22.165.169 – 10.22.165.174	10.22.165.175
183	10.22.165.176/29	10.22.165.177 – 10.22.165.182	10.22.165.183
184	10.22.165.184/29	10.22.165.185 – 10.22.165.190	10.22.165.191
185	10.22.165.192/29	10.22.165.193 – 10.22.165.198	10.22.165.199
186	10.22.165.200/29	10.22.165.201 – 10.22.165.206	10.22.165.207
187	10.22.165.208/29	10.22.165.209 – 10.22.165.214	10.22.165.215
188	10.22.165.216/29	10.22.165.217 – 10.22.165.222	10.22.165.223
189	10.22.165.224/29	10.22.165.225 – 10.22.165.230	10.22.165.231
190	10.22.165.232/29	10.22.165.233 – 10.22.165.238	10.22.165.239
191	10.22.165.240/29	10.22.165.241 – 10.22.165.246	10.22.165.247
192	10.22.165.248/29	10.22.165.249 – 10.22.165.254	10.22.165.255
193	10.22.166.0/29	10.22.166.1 – 10.22.166.6	10.22.166.7
194	10.22.166.8/29	10.22.166.9 – 10.22.166.14	10.22.166.15
195	10.22.166.16/29	10.22.166.17 – 10.22.166.22	10.22.166.23
196	10.22.166.24/29	10.22.166.25 – 10.22.166.30	10.22.166.31
197	10.22.166.32/29	10.22.166.33 – 10.22.166.38	10.22.166.39
198	10.22.166.40/29	10.22.166.41 – 10.22.166.46	10.22.166.47
199	10.22.166.48/29	10.22.166.49 – 10.22.166.54	10.22.166.55
200	10.22.166.56/29	10.22.166.57 – 10.22.166.62	10.22.166.63
201	10.22.166.64/29	10.22.166.65 – 10.22.166.70	10.22.166.71
202	10.22.166.72/29	10.22.166.73 – 10.22.166.78	10.22.166.79
203	10.22.166.80/29	10.22.166.81 – 10.22.166.86	10.22.166.87
204	10.22.166.88/29	10.22.166.89 – 10.22.166.94	10.22.166.95
205	10.22.166.96/29	10.22.166.97 – 10.22.166.102	10.22.166.103
206	10.22.166.104/29	10.22.166.105 – 10.22.166.110	10.22.166.111
207	10.22.166.112/29	10.22.166.113 – 10.22.166.118	10.22.166.119
208	10.22.166.120/29	10.22.166.121 – 10.22.166.126	10.22.166.127
209	10.22.166.128/29	10.22.166.129 – 10.22.166.134	10.22.166.135
210	10.22.166.136/29	10.22.166.137 – 10.22.166.142	10.22.166.143
211	10.22.166.144/29	10.22.166.145 – 10.22.166.150	10.22.166.151
212	10.22.166.152/29	10.22.166.153 – 10.22.166.158	10.22.166.159
213	10.22.166.160/29	10.22.166.161 – 10.22.166.166	10.22.166.167
214	10.22.166.168/29	10.22.166.169 – 10.22.166.174	10.22.166.175
215	10.22.166.176/29	10.22.166.177 – 10.22.166.182	10.22.166.183
216	10.22.166.184/29	10.22.166.185 – 10.22.166.190	10.22.166.191
217	10.22.166.192/29	10.22.166.193 – 10.22.166.198	10.22.166.199
218	10.22.166.200/29	10.22.166.201 – 10.22.166.206	10.22.166.207
219	10.22.166.208/29	10.22.166.209 – 10.22.166.214	10.22.166.215
220	10.22.166.216/29	10.22.166.217 – 10.22.166.222	10.22.166.223
221	10.22.166.224/29	10.22.166.225 – 10.22.166.230	10.22.166.231
222	10.22.166.232/29	10.22.166.233 – 10.22.166.238	10.22.166.239
223	10.22.166.240/29	10.22.166.241 – 10.22.166.246	10.22.166.247
224	10.22.166.248/29	10.22.166.249 – 10.22.166.254	10.22.166.255
225	10.22.167.0/29	10.22.167.1 – 10.22.167.6	10.22.167.7
226	10.22.167.8/29	10.22.167.9 – 10.22.167.14	10.22.167.15
227	10.22.167.16/29	10.22.167.17 – 10.22.167.22	10.22.167.23
228	10.22.167.24/29	10.22.167.25 – 10.22.167.30	10.22.167.31
229	10.22.167.32/29	10.22.167.33 – 10.22.167.38	10.22.167.39
230	10.22.167.40/29	10.22.167.41 – 10.22.167.46	10.22.167.47
231	10.22.167.48/29	10.22.167.49 – 10.22.167.54	10.22.167.55
232	10.22.167.56/29	10.22.167.57 – 10.22.167.62	10.22.167.63
233	10.22.167.64/29	10.22.167.65 – 10.22.167.70	10.22.167.71
234	10.22.167.72/29	10.22.167.73 – 10.22.167.78	10.22.167.79
235	10.22.167.80/29	10.22.167.81 – 10.22.167.86	10.22.167.87
236	10.22.167.88/29	10.22.167.89 – 10.22.167.94	10.22.167.95
237	10.22.167.96/29	10.22.167.97 – 10.22.167.102	10.22.167.103
238	10.22.167.104/29	10.22.167.105 – 10.22.167.110	10.22.167.111
239	10.22.167.112/29	10.22.167.113 – 10.22.167.118	10.22.167.119
240	10.22.167.120/29	10.22.167.121 – 10.22.167.126	10.22.167.127
241	10.22.167.128/29	10.22.167.129 – 10.22.167.134	10.22.167.135
242	10.22.167.136/29	10.22.167.137 – 10.22.167.142	10.22.167.143
243	10.22.167.144/29	10.22.167.145 – 10.22.167.150	10.22.167.151
244	10.22.167.152/29	10.22.167.153 – 10.22.167.158	10.22.167.159
245	10.22.167.160/29	10.22.167.161 – 10.22.167.166	10.22.167.167
246	10.22.167.168/29	10.22.167.169 – 10.22.167.174	10.22.167.175
247	10.22.167.176/29	10.22.167.177 – 10.22.167.182	10.22.167.183
248	10.22.167.184/29	10.22.167.185 – 10.22.167.190	10.22.167.191
249	10.22.167.192/29	10.22.167.193 – 10.22.167.198	10.22.167.199
250	10.22.167.200/29	10.22.167.201 – 10.22.167.206	10.22.167.207
251	10.22.167.208/29	10.22.167.209 – 10.22.167.214	10.22.167.215
252	10.22.167.216/29	10.22.167.217 – 10.22.167.222	10.22.167.223
253	10.22.167.224/29	10.22.167.225 – 10.22.167.230	10.22.167.231
254	10.22.167.232/29	10.22.167.233 – 10.22.167.238	10.22.167.239
255	10.22.167.240/29	10.22.167.241 – 10.22.167.246	10.22.167.247
256	10.22.167.248/29	10.22.167.249 – 10.22.167.254	10.22.167.255

showing 256 of 1,024

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 /19
/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	1
/20	255.255.240.0	4,096	4,094	2 split →
/21	255.255.248.0	2,048	2,046	4 split →
/22	255.255.252.0	1,024	1,022	8 split →
/23	255.255.254.0	512	510	16 split →
/24	255.255.255.0	256	254	32 split →
/25	255.255.255.128	128	126	64 split →
/26	255.255.255.192	64	62	128 split →
/27	255.255.255.224	32	30	256 split →
/28	255.255.255.240	16	14	512 split →
/29	255.255.255.248	8	6	1,024 split →
/30	255.255.255.252	4	2	2,048 split →
/31	255.255.255.254	2	2	4,096 split →
/32	255.255.255.255	1	1	8,192 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 →