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)10.131.48.0/22

network10.131.48.0/22

broadcast10.131.51.255

first host10.131.48.1

last host10.131.51.254

subnet mask255.255.252.0

wildcard0.0.3.255

addresses1,024

usable hosts1,022

classA

ipcalc 10.131.48.0/22

address00001010.10000011.00110000.00000000

subnet mask11111111.11111111.11111100.00000000

network00001010.10000011.00110000.00000000

broadcast00001010.10000011.00110011.11111111

green = network part, grey = host part

hex0x0a833000

decimal176369664

reverse dns0.48.131.10.in-addr.arpa

ipv4-mapped::ffff:a83:3000

/22 split into /29 · 128 subnets

close ×

#	network	host range	broadcast
1	10.131.48.0/29	10.131.48.1 – 10.131.48.6	10.131.48.7
2	10.131.48.8/29	10.131.48.9 – 10.131.48.14	10.131.48.15
3	10.131.48.16/29	10.131.48.17 – 10.131.48.22	10.131.48.23
4	10.131.48.24/29	10.131.48.25 – 10.131.48.30	10.131.48.31
5	10.131.48.32/29	10.131.48.33 – 10.131.48.38	10.131.48.39
6	10.131.48.40/29	10.131.48.41 – 10.131.48.46	10.131.48.47
7	10.131.48.48/29	10.131.48.49 – 10.131.48.54	10.131.48.55
8	10.131.48.56/29	10.131.48.57 – 10.131.48.62	10.131.48.63
9	10.131.48.64/29	10.131.48.65 – 10.131.48.70	10.131.48.71
10	10.131.48.72/29	10.131.48.73 – 10.131.48.78	10.131.48.79
11	10.131.48.80/29	10.131.48.81 – 10.131.48.86	10.131.48.87
12	10.131.48.88/29	10.131.48.89 – 10.131.48.94	10.131.48.95
13	10.131.48.96/29	10.131.48.97 – 10.131.48.102	10.131.48.103
14	10.131.48.104/29	10.131.48.105 – 10.131.48.110	10.131.48.111
15	10.131.48.112/29	10.131.48.113 – 10.131.48.118	10.131.48.119
16	10.131.48.120/29	10.131.48.121 – 10.131.48.126	10.131.48.127
17	10.131.48.128/29	10.131.48.129 – 10.131.48.134	10.131.48.135
18	10.131.48.136/29	10.131.48.137 – 10.131.48.142	10.131.48.143
19	10.131.48.144/29	10.131.48.145 – 10.131.48.150	10.131.48.151
20	10.131.48.152/29	10.131.48.153 – 10.131.48.158	10.131.48.159
21	10.131.48.160/29	10.131.48.161 – 10.131.48.166	10.131.48.167
22	10.131.48.168/29	10.131.48.169 – 10.131.48.174	10.131.48.175
23	10.131.48.176/29	10.131.48.177 – 10.131.48.182	10.131.48.183
24	10.131.48.184/29	10.131.48.185 – 10.131.48.190	10.131.48.191
25	10.131.48.192/29	10.131.48.193 – 10.131.48.198	10.131.48.199
26	10.131.48.200/29	10.131.48.201 – 10.131.48.206	10.131.48.207
27	10.131.48.208/29	10.131.48.209 – 10.131.48.214	10.131.48.215
28	10.131.48.216/29	10.131.48.217 – 10.131.48.222	10.131.48.223
29	10.131.48.224/29	10.131.48.225 – 10.131.48.230	10.131.48.231
30	10.131.48.232/29	10.131.48.233 – 10.131.48.238	10.131.48.239
31	10.131.48.240/29	10.131.48.241 – 10.131.48.246	10.131.48.247
32	10.131.48.248/29	10.131.48.249 – 10.131.48.254	10.131.48.255
33	10.131.49.0/29	10.131.49.1 – 10.131.49.6	10.131.49.7
34	10.131.49.8/29	10.131.49.9 – 10.131.49.14	10.131.49.15
35	10.131.49.16/29	10.131.49.17 – 10.131.49.22	10.131.49.23
36	10.131.49.24/29	10.131.49.25 – 10.131.49.30	10.131.49.31
37	10.131.49.32/29	10.131.49.33 – 10.131.49.38	10.131.49.39
38	10.131.49.40/29	10.131.49.41 – 10.131.49.46	10.131.49.47
39	10.131.49.48/29	10.131.49.49 – 10.131.49.54	10.131.49.55
40	10.131.49.56/29	10.131.49.57 – 10.131.49.62	10.131.49.63
41	10.131.49.64/29	10.131.49.65 – 10.131.49.70	10.131.49.71
42	10.131.49.72/29	10.131.49.73 – 10.131.49.78	10.131.49.79
43	10.131.49.80/29	10.131.49.81 – 10.131.49.86	10.131.49.87
44	10.131.49.88/29	10.131.49.89 – 10.131.49.94	10.131.49.95
45	10.131.49.96/29	10.131.49.97 – 10.131.49.102	10.131.49.103
46	10.131.49.104/29	10.131.49.105 – 10.131.49.110	10.131.49.111
47	10.131.49.112/29	10.131.49.113 – 10.131.49.118	10.131.49.119
48	10.131.49.120/29	10.131.49.121 – 10.131.49.126	10.131.49.127
49	10.131.49.128/29	10.131.49.129 – 10.131.49.134	10.131.49.135
50	10.131.49.136/29	10.131.49.137 – 10.131.49.142	10.131.49.143
51	10.131.49.144/29	10.131.49.145 – 10.131.49.150	10.131.49.151
52	10.131.49.152/29	10.131.49.153 – 10.131.49.158	10.131.49.159
53	10.131.49.160/29	10.131.49.161 – 10.131.49.166	10.131.49.167
54	10.131.49.168/29	10.131.49.169 – 10.131.49.174	10.131.49.175
55	10.131.49.176/29	10.131.49.177 – 10.131.49.182	10.131.49.183
56	10.131.49.184/29	10.131.49.185 – 10.131.49.190	10.131.49.191
57	10.131.49.192/29	10.131.49.193 – 10.131.49.198	10.131.49.199
58	10.131.49.200/29	10.131.49.201 – 10.131.49.206	10.131.49.207
59	10.131.49.208/29	10.131.49.209 – 10.131.49.214	10.131.49.215
60	10.131.49.216/29	10.131.49.217 – 10.131.49.222	10.131.49.223
61	10.131.49.224/29	10.131.49.225 – 10.131.49.230	10.131.49.231
62	10.131.49.232/29	10.131.49.233 – 10.131.49.238	10.131.49.239
63	10.131.49.240/29	10.131.49.241 – 10.131.49.246	10.131.49.247
64	10.131.49.248/29	10.131.49.249 – 10.131.49.254	10.131.49.255
65	10.131.50.0/29	10.131.50.1 – 10.131.50.6	10.131.50.7
66	10.131.50.8/29	10.131.50.9 – 10.131.50.14	10.131.50.15
67	10.131.50.16/29	10.131.50.17 – 10.131.50.22	10.131.50.23
68	10.131.50.24/29	10.131.50.25 – 10.131.50.30	10.131.50.31
69	10.131.50.32/29	10.131.50.33 – 10.131.50.38	10.131.50.39
70	10.131.50.40/29	10.131.50.41 – 10.131.50.46	10.131.50.47
71	10.131.50.48/29	10.131.50.49 – 10.131.50.54	10.131.50.55
72	10.131.50.56/29	10.131.50.57 – 10.131.50.62	10.131.50.63
73	10.131.50.64/29	10.131.50.65 – 10.131.50.70	10.131.50.71
74	10.131.50.72/29	10.131.50.73 – 10.131.50.78	10.131.50.79
75	10.131.50.80/29	10.131.50.81 – 10.131.50.86	10.131.50.87
76	10.131.50.88/29	10.131.50.89 – 10.131.50.94	10.131.50.95
77	10.131.50.96/29	10.131.50.97 – 10.131.50.102	10.131.50.103
78	10.131.50.104/29	10.131.50.105 – 10.131.50.110	10.131.50.111
79	10.131.50.112/29	10.131.50.113 – 10.131.50.118	10.131.50.119
80	10.131.50.120/29	10.131.50.121 – 10.131.50.126	10.131.50.127
81	10.131.50.128/29	10.131.50.129 – 10.131.50.134	10.131.50.135
82	10.131.50.136/29	10.131.50.137 – 10.131.50.142	10.131.50.143
83	10.131.50.144/29	10.131.50.145 – 10.131.50.150	10.131.50.151
84	10.131.50.152/29	10.131.50.153 – 10.131.50.158	10.131.50.159
85	10.131.50.160/29	10.131.50.161 – 10.131.50.166	10.131.50.167
86	10.131.50.168/29	10.131.50.169 – 10.131.50.174	10.131.50.175
87	10.131.50.176/29	10.131.50.177 – 10.131.50.182	10.131.50.183
88	10.131.50.184/29	10.131.50.185 – 10.131.50.190	10.131.50.191
89	10.131.50.192/29	10.131.50.193 – 10.131.50.198	10.131.50.199
90	10.131.50.200/29	10.131.50.201 – 10.131.50.206	10.131.50.207
91	10.131.50.208/29	10.131.50.209 – 10.131.50.214	10.131.50.215
92	10.131.50.216/29	10.131.50.217 – 10.131.50.222	10.131.50.223
93	10.131.50.224/29	10.131.50.225 – 10.131.50.230	10.131.50.231
94	10.131.50.232/29	10.131.50.233 – 10.131.50.238	10.131.50.239
95	10.131.50.240/29	10.131.50.241 – 10.131.50.246	10.131.50.247
96	10.131.50.248/29	10.131.50.249 – 10.131.50.254	10.131.50.255
97	10.131.51.0/29	10.131.51.1 – 10.131.51.6	10.131.51.7
98	10.131.51.8/29	10.131.51.9 – 10.131.51.14	10.131.51.15
99	10.131.51.16/29	10.131.51.17 – 10.131.51.22	10.131.51.23
100	10.131.51.24/29	10.131.51.25 – 10.131.51.30	10.131.51.31
101	10.131.51.32/29	10.131.51.33 – 10.131.51.38	10.131.51.39
102	10.131.51.40/29	10.131.51.41 – 10.131.51.46	10.131.51.47
103	10.131.51.48/29	10.131.51.49 – 10.131.51.54	10.131.51.55
104	10.131.51.56/29	10.131.51.57 – 10.131.51.62	10.131.51.63
105	10.131.51.64/29	10.131.51.65 – 10.131.51.70	10.131.51.71
106	10.131.51.72/29	10.131.51.73 – 10.131.51.78	10.131.51.79
107	10.131.51.80/29	10.131.51.81 – 10.131.51.86	10.131.51.87
108	10.131.51.88/29	10.131.51.89 – 10.131.51.94	10.131.51.95
109	10.131.51.96/29	10.131.51.97 – 10.131.51.102	10.131.51.103
110	10.131.51.104/29	10.131.51.105 – 10.131.51.110	10.131.51.111
111	10.131.51.112/29	10.131.51.113 – 10.131.51.118	10.131.51.119
112	10.131.51.120/29	10.131.51.121 – 10.131.51.126	10.131.51.127
113	10.131.51.128/29	10.131.51.129 – 10.131.51.134	10.131.51.135
114	10.131.51.136/29	10.131.51.137 – 10.131.51.142	10.131.51.143
115	10.131.51.144/29	10.131.51.145 – 10.131.51.150	10.131.51.151
116	10.131.51.152/29	10.131.51.153 – 10.131.51.158	10.131.51.159
117	10.131.51.160/29	10.131.51.161 – 10.131.51.166	10.131.51.167
118	10.131.51.168/29	10.131.51.169 – 10.131.51.174	10.131.51.175
119	10.131.51.176/29	10.131.51.177 – 10.131.51.182	10.131.51.183
120	10.131.51.184/29	10.131.51.185 – 10.131.51.190	10.131.51.191
121	10.131.51.192/29	10.131.51.193 – 10.131.51.198	10.131.51.199
122	10.131.51.200/29	10.131.51.201 – 10.131.51.206	10.131.51.207
123	10.131.51.208/29	10.131.51.209 – 10.131.51.214	10.131.51.215
124	10.131.51.216/29	10.131.51.217 – 10.131.51.222	10.131.51.223
125	10.131.51.224/29	10.131.51.225 – 10.131.51.230	10.131.51.231
126	10.131.51.232/29	10.131.51.233 – 10.131.51.238	10.131.51.239
127	10.131.51.240/29	10.131.51.241 – 10.131.51.246	10.131.51.247
128	10.131.51.248/29	10.131.51.249 – 10.131.51.254	10.131.51.255

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 →