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)10.0.160.0/19

network10.0.160.0/19

broadcast10.0.191.255

first host10.0.160.1

last host10.0.191.254

subnet mask255.255.224.0

wildcard0.0.31.255

addresses8,192

usable hosts8,190

classA

ipcalc 10.0.160.0/19

address00001010.00000000.10100000.00000000

subnet mask11111111.11111111.11100000.00000000

network00001010.00000000.10100000.00000000

broadcast00001010.00000000.10111111.11111111

green = network part, grey = host part

hex0x0a00a000

decimal167813120

reverse dns0.160.0.10.in-addr.arpa

ipv4-mapped::ffff:a00:a000

/19 split into /28 · 512 subnets

close ×

#	network	host range	broadcast
1	10.0.160.0/28	10.0.160.1 – 10.0.160.14	10.0.160.15
2	10.0.160.16/28	10.0.160.17 – 10.0.160.30	10.0.160.31
3	10.0.160.32/28	10.0.160.33 – 10.0.160.46	10.0.160.47
4	10.0.160.48/28	10.0.160.49 – 10.0.160.62	10.0.160.63
5	10.0.160.64/28	10.0.160.65 – 10.0.160.78	10.0.160.79
6	10.0.160.80/28	10.0.160.81 – 10.0.160.94	10.0.160.95
7	10.0.160.96/28	10.0.160.97 – 10.0.160.110	10.0.160.111
8	10.0.160.112/28	10.0.160.113 – 10.0.160.126	10.0.160.127
9	10.0.160.128/28	10.0.160.129 – 10.0.160.142	10.0.160.143
10	10.0.160.144/28	10.0.160.145 – 10.0.160.158	10.0.160.159
11	10.0.160.160/28	10.0.160.161 – 10.0.160.174	10.0.160.175
12	10.0.160.176/28	10.0.160.177 – 10.0.160.190	10.0.160.191
13	10.0.160.192/28	10.0.160.193 – 10.0.160.206	10.0.160.207
14	10.0.160.208/28	10.0.160.209 – 10.0.160.222	10.0.160.223
15	10.0.160.224/28	10.0.160.225 – 10.0.160.238	10.0.160.239
16	10.0.160.240/28	10.0.160.241 – 10.0.160.254	10.0.160.255
17	10.0.161.0/28	10.0.161.1 – 10.0.161.14	10.0.161.15
18	10.0.161.16/28	10.0.161.17 – 10.0.161.30	10.0.161.31
19	10.0.161.32/28	10.0.161.33 – 10.0.161.46	10.0.161.47
20	10.0.161.48/28	10.0.161.49 – 10.0.161.62	10.0.161.63
21	10.0.161.64/28	10.0.161.65 – 10.0.161.78	10.0.161.79
22	10.0.161.80/28	10.0.161.81 – 10.0.161.94	10.0.161.95
23	10.0.161.96/28	10.0.161.97 – 10.0.161.110	10.0.161.111
24	10.0.161.112/28	10.0.161.113 – 10.0.161.126	10.0.161.127
25	10.0.161.128/28	10.0.161.129 – 10.0.161.142	10.0.161.143
26	10.0.161.144/28	10.0.161.145 – 10.0.161.158	10.0.161.159
27	10.0.161.160/28	10.0.161.161 – 10.0.161.174	10.0.161.175
28	10.0.161.176/28	10.0.161.177 – 10.0.161.190	10.0.161.191
29	10.0.161.192/28	10.0.161.193 – 10.0.161.206	10.0.161.207
30	10.0.161.208/28	10.0.161.209 – 10.0.161.222	10.0.161.223
31	10.0.161.224/28	10.0.161.225 – 10.0.161.238	10.0.161.239
32	10.0.161.240/28	10.0.161.241 – 10.0.161.254	10.0.161.255
33	10.0.162.0/28	10.0.162.1 – 10.0.162.14	10.0.162.15
34	10.0.162.16/28	10.0.162.17 – 10.0.162.30	10.0.162.31
35	10.0.162.32/28	10.0.162.33 – 10.0.162.46	10.0.162.47
36	10.0.162.48/28	10.0.162.49 – 10.0.162.62	10.0.162.63
37	10.0.162.64/28	10.0.162.65 – 10.0.162.78	10.0.162.79
38	10.0.162.80/28	10.0.162.81 – 10.0.162.94	10.0.162.95
39	10.0.162.96/28	10.0.162.97 – 10.0.162.110	10.0.162.111
40	10.0.162.112/28	10.0.162.113 – 10.0.162.126	10.0.162.127
41	10.0.162.128/28	10.0.162.129 – 10.0.162.142	10.0.162.143
42	10.0.162.144/28	10.0.162.145 – 10.0.162.158	10.0.162.159
43	10.0.162.160/28	10.0.162.161 – 10.0.162.174	10.0.162.175
44	10.0.162.176/28	10.0.162.177 – 10.0.162.190	10.0.162.191
45	10.0.162.192/28	10.0.162.193 – 10.0.162.206	10.0.162.207
46	10.0.162.208/28	10.0.162.209 – 10.0.162.222	10.0.162.223
47	10.0.162.224/28	10.0.162.225 – 10.0.162.238	10.0.162.239
48	10.0.162.240/28	10.0.162.241 – 10.0.162.254	10.0.162.255
49	10.0.163.0/28	10.0.163.1 – 10.0.163.14	10.0.163.15
50	10.0.163.16/28	10.0.163.17 – 10.0.163.30	10.0.163.31
51	10.0.163.32/28	10.0.163.33 – 10.0.163.46	10.0.163.47
52	10.0.163.48/28	10.0.163.49 – 10.0.163.62	10.0.163.63
53	10.0.163.64/28	10.0.163.65 – 10.0.163.78	10.0.163.79
54	10.0.163.80/28	10.0.163.81 – 10.0.163.94	10.0.163.95
55	10.0.163.96/28	10.0.163.97 – 10.0.163.110	10.0.163.111
56	10.0.163.112/28	10.0.163.113 – 10.0.163.126	10.0.163.127
57	10.0.163.128/28	10.0.163.129 – 10.0.163.142	10.0.163.143
58	10.0.163.144/28	10.0.163.145 – 10.0.163.158	10.0.163.159
59	10.0.163.160/28	10.0.163.161 – 10.0.163.174	10.0.163.175
60	10.0.163.176/28	10.0.163.177 – 10.0.163.190	10.0.163.191
61	10.0.163.192/28	10.0.163.193 – 10.0.163.206	10.0.163.207
62	10.0.163.208/28	10.0.163.209 – 10.0.163.222	10.0.163.223
63	10.0.163.224/28	10.0.163.225 – 10.0.163.238	10.0.163.239
64	10.0.163.240/28	10.0.163.241 – 10.0.163.254	10.0.163.255
65	10.0.164.0/28	10.0.164.1 – 10.0.164.14	10.0.164.15
66	10.0.164.16/28	10.0.164.17 – 10.0.164.30	10.0.164.31
67	10.0.164.32/28	10.0.164.33 – 10.0.164.46	10.0.164.47
68	10.0.164.48/28	10.0.164.49 – 10.0.164.62	10.0.164.63
69	10.0.164.64/28	10.0.164.65 – 10.0.164.78	10.0.164.79
70	10.0.164.80/28	10.0.164.81 – 10.0.164.94	10.0.164.95
71	10.0.164.96/28	10.0.164.97 – 10.0.164.110	10.0.164.111
72	10.0.164.112/28	10.0.164.113 – 10.0.164.126	10.0.164.127
73	10.0.164.128/28	10.0.164.129 – 10.0.164.142	10.0.164.143
74	10.0.164.144/28	10.0.164.145 – 10.0.164.158	10.0.164.159
75	10.0.164.160/28	10.0.164.161 – 10.0.164.174	10.0.164.175
76	10.0.164.176/28	10.0.164.177 – 10.0.164.190	10.0.164.191
77	10.0.164.192/28	10.0.164.193 – 10.0.164.206	10.0.164.207
78	10.0.164.208/28	10.0.164.209 – 10.0.164.222	10.0.164.223
79	10.0.164.224/28	10.0.164.225 – 10.0.164.238	10.0.164.239
80	10.0.164.240/28	10.0.164.241 – 10.0.164.254	10.0.164.255
81	10.0.165.0/28	10.0.165.1 – 10.0.165.14	10.0.165.15
82	10.0.165.16/28	10.0.165.17 – 10.0.165.30	10.0.165.31
83	10.0.165.32/28	10.0.165.33 – 10.0.165.46	10.0.165.47
84	10.0.165.48/28	10.0.165.49 – 10.0.165.62	10.0.165.63
85	10.0.165.64/28	10.0.165.65 – 10.0.165.78	10.0.165.79
86	10.0.165.80/28	10.0.165.81 – 10.0.165.94	10.0.165.95
87	10.0.165.96/28	10.0.165.97 – 10.0.165.110	10.0.165.111
88	10.0.165.112/28	10.0.165.113 – 10.0.165.126	10.0.165.127
89	10.0.165.128/28	10.0.165.129 – 10.0.165.142	10.0.165.143
90	10.0.165.144/28	10.0.165.145 – 10.0.165.158	10.0.165.159
91	10.0.165.160/28	10.0.165.161 – 10.0.165.174	10.0.165.175
92	10.0.165.176/28	10.0.165.177 – 10.0.165.190	10.0.165.191
93	10.0.165.192/28	10.0.165.193 – 10.0.165.206	10.0.165.207
94	10.0.165.208/28	10.0.165.209 – 10.0.165.222	10.0.165.223
95	10.0.165.224/28	10.0.165.225 – 10.0.165.238	10.0.165.239
96	10.0.165.240/28	10.0.165.241 – 10.0.165.254	10.0.165.255
97	10.0.166.0/28	10.0.166.1 – 10.0.166.14	10.0.166.15
98	10.0.166.16/28	10.0.166.17 – 10.0.166.30	10.0.166.31
99	10.0.166.32/28	10.0.166.33 – 10.0.166.46	10.0.166.47
100	10.0.166.48/28	10.0.166.49 – 10.0.166.62	10.0.166.63
101	10.0.166.64/28	10.0.166.65 – 10.0.166.78	10.0.166.79
102	10.0.166.80/28	10.0.166.81 – 10.0.166.94	10.0.166.95
103	10.0.166.96/28	10.0.166.97 – 10.0.166.110	10.0.166.111
104	10.0.166.112/28	10.0.166.113 – 10.0.166.126	10.0.166.127
105	10.0.166.128/28	10.0.166.129 – 10.0.166.142	10.0.166.143
106	10.0.166.144/28	10.0.166.145 – 10.0.166.158	10.0.166.159
107	10.0.166.160/28	10.0.166.161 – 10.0.166.174	10.0.166.175
108	10.0.166.176/28	10.0.166.177 – 10.0.166.190	10.0.166.191
109	10.0.166.192/28	10.0.166.193 – 10.0.166.206	10.0.166.207
110	10.0.166.208/28	10.0.166.209 – 10.0.166.222	10.0.166.223
111	10.0.166.224/28	10.0.166.225 – 10.0.166.238	10.0.166.239
112	10.0.166.240/28	10.0.166.241 – 10.0.166.254	10.0.166.255
113	10.0.167.0/28	10.0.167.1 – 10.0.167.14	10.0.167.15
114	10.0.167.16/28	10.0.167.17 – 10.0.167.30	10.0.167.31
115	10.0.167.32/28	10.0.167.33 – 10.0.167.46	10.0.167.47
116	10.0.167.48/28	10.0.167.49 – 10.0.167.62	10.0.167.63
117	10.0.167.64/28	10.0.167.65 – 10.0.167.78	10.0.167.79
118	10.0.167.80/28	10.0.167.81 – 10.0.167.94	10.0.167.95
119	10.0.167.96/28	10.0.167.97 – 10.0.167.110	10.0.167.111
120	10.0.167.112/28	10.0.167.113 – 10.0.167.126	10.0.167.127
121	10.0.167.128/28	10.0.167.129 – 10.0.167.142	10.0.167.143
122	10.0.167.144/28	10.0.167.145 – 10.0.167.158	10.0.167.159
123	10.0.167.160/28	10.0.167.161 – 10.0.167.174	10.0.167.175
124	10.0.167.176/28	10.0.167.177 – 10.0.167.190	10.0.167.191
125	10.0.167.192/28	10.0.167.193 – 10.0.167.206	10.0.167.207
126	10.0.167.208/28	10.0.167.209 – 10.0.167.222	10.0.167.223
127	10.0.167.224/28	10.0.167.225 – 10.0.167.238	10.0.167.239
128	10.0.167.240/28	10.0.167.241 – 10.0.167.254	10.0.167.255
129	10.0.168.0/28	10.0.168.1 – 10.0.168.14	10.0.168.15
130	10.0.168.16/28	10.0.168.17 – 10.0.168.30	10.0.168.31
131	10.0.168.32/28	10.0.168.33 – 10.0.168.46	10.0.168.47
132	10.0.168.48/28	10.0.168.49 – 10.0.168.62	10.0.168.63
133	10.0.168.64/28	10.0.168.65 – 10.0.168.78	10.0.168.79
134	10.0.168.80/28	10.0.168.81 – 10.0.168.94	10.0.168.95
135	10.0.168.96/28	10.0.168.97 – 10.0.168.110	10.0.168.111
136	10.0.168.112/28	10.0.168.113 – 10.0.168.126	10.0.168.127
137	10.0.168.128/28	10.0.168.129 – 10.0.168.142	10.0.168.143
138	10.0.168.144/28	10.0.168.145 – 10.0.168.158	10.0.168.159
139	10.0.168.160/28	10.0.168.161 – 10.0.168.174	10.0.168.175
140	10.0.168.176/28	10.0.168.177 – 10.0.168.190	10.0.168.191
141	10.0.168.192/28	10.0.168.193 – 10.0.168.206	10.0.168.207
142	10.0.168.208/28	10.0.168.209 – 10.0.168.222	10.0.168.223
143	10.0.168.224/28	10.0.168.225 – 10.0.168.238	10.0.168.239
144	10.0.168.240/28	10.0.168.241 – 10.0.168.254	10.0.168.255
145	10.0.169.0/28	10.0.169.1 – 10.0.169.14	10.0.169.15
146	10.0.169.16/28	10.0.169.17 – 10.0.169.30	10.0.169.31
147	10.0.169.32/28	10.0.169.33 – 10.0.169.46	10.0.169.47
148	10.0.169.48/28	10.0.169.49 – 10.0.169.62	10.0.169.63
149	10.0.169.64/28	10.0.169.65 – 10.0.169.78	10.0.169.79
150	10.0.169.80/28	10.0.169.81 – 10.0.169.94	10.0.169.95
151	10.0.169.96/28	10.0.169.97 – 10.0.169.110	10.0.169.111
152	10.0.169.112/28	10.0.169.113 – 10.0.169.126	10.0.169.127
153	10.0.169.128/28	10.0.169.129 – 10.0.169.142	10.0.169.143
154	10.0.169.144/28	10.0.169.145 – 10.0.169.158	10.0.169.159
155	10.0.169.160/28	10.0.169.161 – 10.0.169.174	10.0.169.175
156	10.0.169.176/28	10.0.169.177 – 10.0.169.190	10.0.169.191
157	10.0.169.192/28	10.0.169.193 – 10.0.169.206	10.0.169.207
158	10.0.169.208/28	10.0.169.209 – 10.0.169.222	10.0.169.223
159	10.0.169.224/28	10.0.169.225 – 10.0.169.238	10.0.169.239
160	10.0.169.240/28	10.0.169.241 – 10.0.169.254	10.0.169.255
161	10.0.170.0/28	10.0.170.1 – 10.0.170.14	10.0.170.15
162	10.0.170.16/28	10.0.170.17 – 10.0.170.30	10.0.170.31
163	10.0.170.32/28	10.0.170.33 – 10.0.170.46	10.0.170.47
164	10.0.170.48/28	10.0.170.49 – 10.0.170.62	10.0.170.63
165	10.0.170.64/28	10.0.170.65 – 10.0.170.78	10.0.170.79
166	10.0.170.80/28	10.0.170.81 – 10.0.170.94	10.0.170.95
167	10.0.170.96/28	10.0.170.97 – 10.0.170.110	10.0.170.111
168	10.0.170.112/28	10.0.170.113 – 10.0.170.126	10.0.170.127
169	10.0.170.128/28	10.0.170.129 – 10.0.170.142	10.0.170.143
170	10.0.170.144/28	10.0.170.145 – 10.0.170.158	10.0.170.159
171	10.0.170.160/28	10.0.170.161 – 10.0.170.174	10.0.170.175
172	10.0.170.176/28	10.0.170.177 – 10.0.170.190	10.0.170.191
173	10.0.170.192/28	10.0.170.193 – 10.0.170.206	10.0.170.207
174	10.0.170.208/28	10.0.170.209 – 10.0.170.222	10.0.170.223
175	10.0.170.224/28	10.0.170.225 – 10.0.170.238	10.0.170.239
176	10.0.170.240/28	10.0.170.241 – 10.0.170.254	10.0.170.255
177	10.0.171.0/28	10.0.171.1 – 10.0.171.14	10.0.171.15
178	10.0.171.16/28	10.0.171.17 – 10.0.171.30	10.0.171.31
179	10.0.171.32/28	10.0.171.33 – 10.0.171.46	10.0.171.47
180	10.0.171.48/28	10.0.171.49 – 10.0.171.62	10.0.171.63
181	10.0.171.64/28	10.0.171.65 – 10.0.171.78	10.0.171.79
182	10.0.171.80/28	10.0.171.81 – 10.0.171.94	10.0.171.95
183	10.0.171.96/28	10.0.171.97 – 10.0.171.110	10.0.171.111
184	10.0.171.112/28	10.0.171.113 – 10.0.171.126	10.0.171.127
185	10.0.171.128/28	10.0.171.129 – 10.0.171.142	10.0.171.143
186	10.0.171.144/28	10.0.171.145 – 10.0.171.158	10.0.171.159
187	10.0.171.160/28	10.0.171.161 – 10.0.171.174	10.0.171.175
188	10.0.171.176/28	10.0.171.177 – 10.0.171.190	10.0.171.191
189	10.0.171.192/28	10.0.171.193 – 10.0.171.206	10.0.171.207
190	10.0.171.208/28	10.0.171.209 – 10.0.171.222	10.0.171.223
191	10.0.171.224/28	10.0.171.225 – 10.0.171.238	10.0.171.239
192	10.0.171.240/28	10.0.171.241 – 10.0.171.254	10.0.171.255
193	10.0.172.0/28	10.0.172.1 – 10.0.172.14	10.0.172.15
194	10.0.172.16/28	10.0.172.17 – 10.0.172.30	10.0.172.31
195	10.0.172.32/28	10.0.172.33 – 10.0.172.46	10.0.172.47
196	10.0.172.48/28	10.0.172.49 – 10.0.172.62	10.0.172.63
197	10.0.172.64/28	10.0.172.65 – 10.0.172.78	10.0.172.79
198	10.0.172.80/28	10.0.172.81 – 10.0.172.94	10.0.172.95
199	10.0.172.96/28	10.0.172.97 – 10.0.172.110	10.0.172.111
200	10.0.172.112/28	10.0.172.113 – 10.0.172.126	10.0.172.127
201	10.0.172.128/28	10.0.172.129 – 10.0.172.142	10.0.172.143
202	10.0.172.144/28	10.0.172.145 – 10.0.172.158	10.0.172.159
203	10.0.172.160/28	10.0.172.161 – 10.0.172.174	10.0.172.175
204	10.0.172.176/28	10.0.172.177 – 10.0.172.190	10.0.172.191
205	10.0.172.192/28	10.0.172.193 – 10.0.172.206	10.0.172.207
206	10.0.172.208/28	10.0.172.209 – 10.0.172.222	10.0.172.223
207	10.0.172.224/28	10.0.172.225 – 10.0.172.238	10.0.172.239
208	10.0.172.240/28	10.0.172.241 – 10.0.172.254	10.0.172.255
209	10.0.173.0/28	10.0.173.1 – 10.0.173.14	10.0.173.15
210	10.0.173.16/28	10.0.173.17 – 10.0.173.30	10.0.173.31
211	10.0.173.32/28	10.0.173.33 – 10.0.173.46	10.0.173.47
212	10.0.173.48/28	10.0.173.49 – 10.0.173.62	10.0.173.63
213	10.0.173.64/28	10.0.173.65 – 10.0.173.78	10.0.173.79
214	10.0.173.80/28	10.0.173.81 – 10.0.173.94	10.0.173.95
215	10.0.173.96/28	10.0.173.97 – 10.0.173.110	10.0.173.111
216	10.0.173.112/28	10.0.173.113 – 10.0.173.126	10.0.173.127
217	10.0.173.128/28	10.0.173.129 – 10.0.173.142	10.0.173.143
218	10.0.173.144/28	10.0.173.145 – 10.0.173.158	10.0.173.159
219	10.0.173.160/28	10.0.173.161 – 10.0.173.174	10.0.173.175
220	10.0.173.176/28	10.0.173.177 – 10.0.173.190	10.0.173.191
221	10.0.173.192/28	10.0.173.193 – 10.0.173.206	10.0.173.207
222	10.0.173.208/28	10.0.173.209 – 10.0.173.222	10.0.173.223
223	10.0.173.224/28	10.0.173.225 – 10.0.173.238	10.0.173.239
224	10.0.173.240/28	10.0.173.241 – 10.0.173.254	10.0.173.255
225	10.0.174.0/28	10.0.174.1 – 10.0.174.14	10.0.174.15
226	10.0.174.16/28	10.0.174.17 – 10.0.174.30	10.0.174.31
227	10.0.174.32/28	10.0.174.33 – 10.0.174.46	10.0.174.47
228	10.0.174.48/28	10.0.174.49 – 10.0.174.62	10.0.174.63
229	10.0.174.64/28	10.0.174.65 – 10.0.174.78	10.0.174.79
230	10.0.174.80/28	10.0.174.81 – 10.0.174.94	10.0.174.95
231	10.0.174.96/28	10.0.174.97 – 10.0.174.110	10.0.174.111
232	10.0.174.112/28	10.0.174.113 – 10.0.174.126	10.0.174.127
233	10.0.174.128/28	10.0.174.129 – 10.0.174.142	10.0.174.143
234	10.0.174.144/28	10.0.174.145 – 10.0.174.158	10.0.174.159
235	10.0.174.160/28	10.0.174.161 – 10.0.174.174	10.0.174.175
236	10.0.174.176/28	10.0.174.177 – 10.0.174.190	10.0.174.191
237	10.0.174.192/28	10.0.174.193 – 10.0.174.206	10.0.174.207
238	10.0.174.208/28	10.0.174.209 – 10.0.174.222	10.0.174.223
239	10.0.174.224/28	10.0.174.225 – 10.0.174.238	10.0.174.239
240	10.0.174.240/28	10.0.174.241 – 10.0.174.254	10.0.174.255
241	10.0.175.0/28	10.0.175.1 – 10.0.175.14	10.0.175.15
242	10.0.175.16/28	10.0.175.17 – 10.0.175.30	10.0.175.31
243	10.0.175.32/28	10.0.175.33 – 10.0.175.46	10.0.175.47
244	10.0.175.48/28	10.0.175.49 – 10.0.175.62	10.0.175.63
245	10.0.175.64/28	10.0.175.65 – 10.0.175.78	10.0.175.79
246	10.0.175.80/28	10.0.175.81 – 10.0.175.94	10.0.175.95
247	10.0.175.96/28	10.0.175.97 – 10.0.175.110	10.0.175.111
248	10.0.175.112/28	10.0.175.113 – 10.0.175.126	10.0.175.127
249	10.0.175.128/28	10.0.175.129 – 10.0.175.142	10.0.175.143
250	10.0.175.144/28	10.0.175.145 – 10.0.175.158	10.0.175.159
251	10.0.175.160/28	10.0.175.161 – 10.0.175.174	10.0.175.175
252	10.0.175.176/28	10.0.175.177 – 10.0.175.190	10.0.175.191
253	10.0.175.192/28	10.0.175.193 – 10.0.175.206	10.0.175.207
254	10.0.175.208/28	10.0.175.209 – 10.0.175.222	10.0.175.223
255	10.0.175.224/28	10.0.175.225 – 10.0.175.238	10.0.175.239
256	10.0.175.240/28	10.0.175.241 – 10.0.175.254	10.0.175.255

showing 256 of 512

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 →