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)10.1.88.0/22

network10.1.88.0/22

broadcast10.1.91.255

first host10.1.88.1

last host10.1.91.254

subnet mask255.255.252.0

wildcard0.0.3.255

addresses1,024

usable hosts1,022

classA

ipcalc 10.1.88.0/22

address00001010.00000001.01011000.00000000

subnet mask11111111.11111111.11111100.00000000

network00001010.00000001.01011000.00000000

broadcast00001010.00000001.01011011.11111111

green = network part, grey = host part

hex0x0a015800

decimal167860224

reverse dns0.88.1.10.in-addr.arpa

ipv4-mapped::ffff:a01:5800

/22 split into /29 · 128 subnets

close ×

#	network	host range	broadcast
1	10.1.88.0/29	10.1.88.1 – 10.1.88.6	10.1.88.7
2	10.1.88.8/29	10.1.88.9 – 10.1.88.14	10.1.88.15
3	10.1.88.16/29	10.1.88.17 – 10.1.88.22	10.1.88.23
4	10.1.88.24/29	10.1.88.25 – 10.1.88.30	10.1.88.31
5	10.1.88.32/29	10.1.88.33 – 10.1.88.38	10.1.88.39
6	10.1.88.40/29	10.1.88.41 – 10.1.88.46	10.1.88.47
7	10.1.88.48/29	10.1.88.49 – 10.1.88.54	10.1.88.55
8	10.1.88.56/29	10.1.88.57 – 10.1.88.62	10.1.88.63
9	10.1.88.64/29	10.1.88.65 – 10.1.88.70	10.1.88.71
10	10.1.88.72/29	10.1.88.73 – 10.1.88.78	10.1.88.79
11	10.1.88.80/29	10.1.88.81 – 10.1.88.86	10.1.88.87
12	10.1.88.88/29	10.1.88.89 – 10.1.88.94	10.1.88.95
13	10.1.88.96/29	10.1.88.97 – 10.1.88.102	10.1.88.103
14	10.1.88.104/29	10.1.88.105 – 10.1.88.110	10.1.88.111
15	10.1.88.112/29	10.1.88.113 – 10.1.88.118	10.1.88.119
16	10.1.88.120/29	10.1.88.121 – 10.1.88.126	10.1.88.127
17	10.1.88.128/29	10.1.88.129 – 10.1.88.134	10.1.88.135
18	10.1.88.136/29	10.1.88.137 – 10.1.88.142	10.1.88.143
19	10.1.88.144/29	10.1.88.145 – 10.1.88.150	10.1.88.151
20	10.1.88.152/29	10.1.88.153 – 10.1.88.158	10.1.88.159
21	10.1.88.160/29	10.1.88.161 – 10.1.88.166	10.1.88.167
22	10.1.88.168/29	10.1.88.169 – 10.1.88.174	10.1.88.175
23	10.1.88.176/29	10.1.88.177 – 10.1.88.182	10.1.88.183
24	10.1.88.184/29	10.1.88.185 – 10.1.88.190	10.1.88.191
25	10.1.88.192/29	10.1.88.193 – 10.1.88.198	10.1.88.199
26	10.1.88.200/29	10.1.88.201 – 10.1.88.206	10.1.88.207
27	10.1.88.208/29	10.1.88.209 – 10.1.88.214	10.1.88.215
28	10.1.88.216/29	10.1.88.217 – 10.1.88.222	10.1.88.223
29	10.1.88.224/29	10.1.88.225 – 10.1.88.230	10.1.88.231
30	10.1.88.232/29	10.1.88.233 – 10.1.88.238	10.1.88.239
31	10.1.88.240/29	10.1.88.241 – 10.1.88.246	10.1.88.247
32	10.1.88.248/29	10.1.88.249 – 10.1.88.254	10.1.88.255
33	10.1.89.0/29	10.1.89.1 – 10.1.89.6	10.1.89.7
34	10.1.89.8/29	10.1.89.9 – 10.1.89.14	10.1.89.15
35	10.1.89.16/29	10.1.89.17 – 10.1.89.22	10.1.89.23
36	10.1.89.24/29	10.1.89.25 – 10.1.89.30	10.1.89.31
37	10.1.89.32/29	10.1.89.33 – 10.1.89.38	10.1.89.39
38	10.1.89.40/29	10.1.89.41 – 10.1.89.46	10.1.89.47
39	10.1.89.48/29	10.1.89.49 – 10.1.89.54	10.1.89.55
40	10.1.89.56/29	10.1.89.57 – 10.1.89.62	10.1.89.63
41	10.1.89.64/29	10.1.89.65 – 10.1.89.70	10.1.89.71
42	10.1.89.72/29	10.1.89.73 – 10.1.89.78	10.1.89.79
43	10.1.89.80/29	10.1.89.81 – 10.1.89.86	10.1.89.87
44	10.1.89.88/29	10.1.89.89 – 10.1.89.94	10.1.89.95
45	10.1.89.96/29	10.1.89.97 – 10.1.89.102	10.1.89.103
46	10.1.89.104/29	10.1.89.105 – 10.1.89.110	10.1.89.111
47	10.1.89.112/29	10.1.89.113 – 10.1.89.118	10.1.89.119
48	10.1.89.120/29	10.1.89.121 – 10.1.89.126	10.1.89.127
49	10.1.89.128/29	10.1.89.129 – 10.1.89.134	10.1.89.135
50	10.1.89.136/29	10.1.89.137 – 10.1.89.142	10.1.89.143
51	10.1.89.144/29	10.1.89.145 – 10.1.89.150	10.1.89.151
52	10.1.89.152/29	10.1.89.153 – 10.1.89.158	10.1.89.159
53	10.1.89.160/29	10.1.89.161 – 10.1.89.166	10.1.89.167
54	10.1.89.168/29	10.1.89.169 – 10.1.89.174	10.1.89.175
55	10.1.89.176/29	10.1.89.177 – 10.1.89.182	10.1.89.183
56	10.1.89.184/29	10.1.89.185 – 10.1.89.190	10.1.89.191
57	10.1.89.192/29	10.1.89.193 – 10.1.89.198	10.1.89.199
58	10.1.89.200/29	10.1.89.201 – 10.1.89.206	10.1.89.207
59	10.1.89.208/29	10.1.89.209 – 10.1.89.214	10.1.89.215
60	10.1.89.216/29	10.1.89.217 – 10.1.89.222	10.1.89.223
61	10.1.89.224/29	10.1.89.225 – 10.1.89.230	10.1.89.231
62	10.1.89.232/29	10.1.89.233 – 10.1.89.238	10.1.89.239
63	10.1.89.240/29	10.1.89.241 – 10.1.89.246	10.1.89.247
64	10.1.89.248/29	10.1.89.249 – 10.1.89.254	10.1.89.255
65	10.1.90.0/29	10.1.90.1 – 10.1.90.6	10.1.90.7
66	10.1.90.8/29	10.1.90.9 – 10.1.90.14	10.1.90.15
67	10.1.90.16/29	10.1.90.17 – 10.1.90.22	10.1.90.23
68	10.1.90.24/29	10.1.90.25 – 10.1.90.30	10.1.90.31
69	10.1.90.32/29	10.1.90.33 – 10.1.90.38	10.1.90.39
70	10.1.90.40/29	10.1.90.41 – 10.1.90.46	10.1.90.47
71	10.1.90.48/29	10.1.90.49 – 10.1.90.54	10.1.90.55
72	10.1.90.56/29	10.1.90.57 – 10.1.90.62	10.1.90.63
73	10.1.90.64/29	10.1.90.65 – 10.1.90.70	10.1.90.71
74	10.1.90.72/29	10.1.90.73 – 10.1.90.78	10.1.90.79
75	10.1.90.80/29	10.1.90.81 – 10.1.90.86	10.1.90.87
76	10.1.90.88/29	10.1.90.89 – 10.1.90.94	10.1.90.95
77	10.1.90.96/29	10.1.90.97 – 10.1.90.102	10.1.90.103
78	10.1.90.104/29	10.1.90.105 – 10.1.90.110	10.1.90.111
79	10.1.90.112/29	10.1.90.113 – 10.1.90.118	10.1.90.119
80	10.1.90.120/29	10.1.90.121 – 10.1.90.126	10.1.90.127
81	10.1.90.128/29	10.1.90.129 – 10.1.90.134	10.1.90.135
82	10.1.90.136/29	10.1.90.137 – 10.1.90.142	10.1.90.143
83	10.1.90.144/29	10.1.90.145 – 10.1.90.150	10.1.90.151
84	10.1.90.152/29	10.1.90.153 – 10.1.90.158	10.1.90.159
85	10.1.90.160/29	10.1.90.161 – 10.1.90.166	10.1.90.167
86	10.1.90.168/29	10.1.90.169 – 10.1.90.174	10.1.90.175
87	10.1.90.176/29	10.1.90.177 – 10.1.90.182	10.1.90.183
88	10.1.90.184/29	10.1.90.185 – 10.1.90.190	10.1.90.191
89	10.1.90.192/29	10.1.90.193 – 10.1.90.198	10.1.90.199
90	10.1.90.200/29	10.1.90.201 – 10.1.90.206	10.1.90.207
91	10.1.90.208/29	10.1.90.209 – 10.1.90.214	10.1.90.215
92	10.1.90.216/29	10.1.90.217 – 10.1.90.222	10.1.90.223
93	10.1.90.224/29	10.1.90.225 – 10.1.90.230	10.1.90.231
94	10.1.90.232/29	10.1.90.233 – 10.1.90.238	10.1.90.239
95	10.1.90.240/29	10.1.90.241 – 10.1.90.246	10.1.90.247
96	10.1.90.248/29	10.1.90.249 – 10.1.90.254	10.1.90.255
97	10.1.91.0/29	10.1.91.1 – 10.1.91.6	10.1.91.7
98	10.1.91.8/29	10.1.91.9 – 10.1.91.14	10.1.91.15
99	10.1.91.16/29	10.1.91.17 – 10.1.91.22	10.1.91.23
100	10.1.91.24/29	10.1.91.25 – 10.1.91.30	10.1.91.31
101	10.1.91.32/29	10.1.91.33 – 10.1.91.38	10.1.91.39
102	10.1.91.40/29	10.1.91.41 – 10.1.91.46	10.1.91.47
103	10.1.91.48/29	10.1.91.49 – 10.1.91.54	10.1.91.55
104	10.1.91.56/29	10.1.91.57 – 10.1.91.62	10.1.91.63
105	10.1.91.64/29	10.1.91.65 – 10.1.91.70	10.1.91.71
106	10.1.91.72/29	10.1.91.73 – 10.1.91.78	10.1.91.79
107	10.1.91.80/29	10.1.91.81 – 10.1.91.86	10.1.91.87
108	10.1.91.88/29	10.1.91.89 – 10.1.91.94	10.1.91.95
109	10.1.91.96/29	10.1.91.97 – 10.1.91.102	10.1.91.103
110	10.1.91.104/29	10.1.91.105 – 10.1.91.110	10.1.91.111
111	10.1.91.112/29	10.1.91.113 – 10.1.91.118	10.1.91.119
112	10.1.91.120/29	10.1.91.121 – 10.1.91.126	10.1.91.127
113	10.1.91.128/29	10.1.91.129 – 10.1.91.134	10.1.91.135
114	10.1.91.136/29	10.1.91.137 – 10.1.91.142	10.1.91.143
115	10.1.91.144/29	10.1.91.145 – 10.1.91.150	10.1.91.151
116	10.1.91.152/29	10.1.91.153 – 10.1.91.158	10.1.91.159
117	10.1.91.160/29	10.1.91.161 – 10.1.91.166	10.1.91.167
118	10.1.91.168/29	10.1.91.169 – 10.1.91.174	10.1.91.175
119	10.1.91.176/29	10.1.91.177 – 10.1.91.182	10.1.91.183
120	10.1.91.184/29	10.1.91.185 – 10.1.91.190	10.1.91.191
121	10.1.91.192/29	10.1.91.193 – 10.1.91.198	10.1.91.199
122	10.1.91.200/29	10.1.91.201 – 10.1.91.206	10.1.91.207
123	10.1.91.208/29	10.1.91.209 – 10.1.91.214	10.1.91.215
124	10.1.91.216/29	10.1.91.217 – 10.1.91.222	10.1.91.223
125	10.1.91.224/29	10.1.91.225 – 10.1.91.230	10.1.91.231
126	10.1.91.232/29	10.1.91.233 – 10.1.91.238	10.1.91.239
127	10.1.91.240/29	10.1.91.241 – 10.1.91.246	10.1.91.247
128	10.1.91.248/29	10.1.91.249 – 10.1.91.254	10.1.91.255

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 →