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)10.71.96.0/22

network10.71.96.0/22

broadcast10.71.99.255

first host10.71.96.1

last host10.71.99.254

subnet mask255.255.252.0

wildcard0.0.3.255

addresses1,024

usable hosts1,022

classA

ipcalc 10.71.96.0/22

address00001010.01000111.01100000.00000000

subnet mask11111111.11111111.11111100.00000000

network00001010.01000111.01100000.00000000

broadcast00001010.01000111.01100011.11111111

green = network part, grey = host part

hex0x0a476000

decimal172449792

reverse dns0.96.71.10.in-addr.arpa

ipv4-mapped::ffff:a47:6000

/22 split into /29 · 128 subnets

close ×

#	network	host range	broadcast
1	10.71.96.0/29	10.71.96.1 – 10.71.96.6	10.71.96.7
2	10.71.96.8/29	10.71.96.9 – 10.71.96.14	10.71.96.15
3	10.71.96.16/29	10.71.96.17 – 10.71.96.22	10.71.96.23
4	10.71.96.24/29	10.71.96.25 – 10.71.96.30	10.71.96.31
5	10.71.96.32/29	10.71.96.33 – 10.71.96.38	10.71.96.39
6	10.71.96.40/29	10.71.96.41 – 10.71.96.46	10.71.96.47
7	10.71.96.48/29	10.71.96.49 – 10.71.96.54	10.71.96.55
8	10.71.96.56/29	10.71.96.57 – 10.71.96.62	10.71.96.63
9	10.71.96.64/29	10.71.96.65 – 10.71.96.70	10.71.96.71
10	10.71.96.72/29	10.71.96.73 – 10.71.96.78	10.71.96.79
11	10.71.96.80/29	10.71.96.81 – 10.71.96.86	10.71.96.87
12	10.71.96.88/29	10.71.96.89 – 10.71.96.94	10.71.96.95
13	10.71.96.96/29	10.71.96.97 – 10.71.96.102	10.71.96.103
14	10.71.96.104/29	10.71.96.105 – 10.71.96.110	10.71.96.111
15	10.71.96.112/29	10.71.96.113 – 10.71.96.118	10.71.96.119
16	10.71.96.120/29	10.71.96.121 – 10.71.96.126	10.71.96.127
17	10.71.96.128/29	10.71.96.129 – 10.71.96.134	10.71.96.135
18	10.71.96.136/29	10.71.96.137 – 10.71.96.142	10.71.96.143
19	10.71.96.144/29	10.71.96.145 – 10.71.96.150	10.71.96.151
20	10.71.96.152/29	10.71.96.153 – 10.71.96.158	10.71.96.159
21	10.71.96.160/29	10.71.96.161 – 10.71.96.166	10.71.96.167
22	10.71.96.168/29	10.71.96.169 – 10.71.96.174	10.71.96.175
23	10.71.96.176/29	10.71.96.177 – 10.71.96.182	10.71.96.183
24	10.71.96.184/29	10.71.96.185 – 10.71.96.190	10.71.96.191
25	10.71.96.192/29	10.71.96.193 – 10.71.96.198	10.71.96.199
26	10.71.96.200/29	10.71.96.201 – 10.71.96.206	10.71.96.207
27	10.71.96.208/29	10.71.96.209 – 10.71.96.214	10.71.96.215
28	10.71.96.216/29	10.71.96.217 – 10.71.96.222	10.71.96.223
29	10.71.96.224/29	10.71.96.225 – 10.71.96.230	10.71.96.231
30	10.71.96.232/29	10.71.96.233 – 10.71.96.238	10.71.96.239
31	10.71.96.240/29	10.71.96.241 – 10.71.96.246	10.71.96.247
32	10.71.96.248/29	10.71.96.249 – 10.71.96.254	10.71.96.255
33	10.71.97.0/29	10.71.97.1 – 10.71.97.6	10.71.97.7
34	10.71.97.8/29	10.71.97.9 – 10.71.97.14	10.71.97.15
35	10.71.97.16/29	10.71.97.17 – 10.71.97.22	10.71.97.23
36	10.71.97.24/29	10.71.97.25 – 10.71.97.30	10.71.97.31
37	10.71.97.32/29	10.71.97.33 – 10.71.97.38	10.71.97.39
38	10.71.97.40/29	10.71.97.41 – 10.71.97.46	10.71.97.47
39	10.71.97.48/29	10.71.97.49 – 10.71.97.54	10.71.97.55
40	10.71.97.56/29	10.71.97.57 – 10.71.97.62	10.71.97.63
41	10.71.97.64/29	10.71.97.65 – 10.71.97.70	10.71.97.71
42	10.71.97.72/29	10.71.97.73 – 10.71.97.78	10.71.97.79
43	10.71.97.80/29	10.71.97.81 – 10.71.97.86	10.71.97.87
44	10.71.97.88/29	10.71.97.89 – 10.71.97.94	10.71.97.95
45	10.71.97.96/29	10.71.97.97 – 10.71.97.102	10.71.97.103
46	10.71.97.104/29	10.71.97.105 – 10.71.97.110	10.71.97.111
47	10.71.97.112/29	10.71.97.113 – 10.71.97.118	10.71.97.119
48	10.71.97.120/29	10.71.97.121 – 10.71.97.126	10.71.97.127
49	10.71.97.128/29	10.71.97.129 – 10.71.97.134	10.71.97.135
50	10.71.97.136/29	10.71.97.137 – 10.71.97.142	10.71.97.143
51	10.71.97.144/29	10.71.97.145 – 10.71.97.150	10.71.97.151
52	10.71.97.152/29	10.71.97.153 – 10.71.97.158	10.71.97.159
53	10.71.97.160/29	10.71.97.161 – 10.71.97.166	10.71.97.167
54	10.71.97.168/29	10.71.97.169 – 10.71.97.174	10.71.97.175
55	10.71.97.176/29	10.71.97.177 – 10.71.97.182	10.71.97.183
56	10.71.97.184/29	10.71.97.185 – 10.71.97.190	10.71.97.191
57	10.71.97.192/29	10.71.97.193 – 10.71.97.198	10.71.97.199
58	10.71.97.200/29	10.71.97.201 – 10.71.97.206	10.71.97.207
59	10.71.97.208/29	10.71.97.209 – 10.71.97.214	10.71.97.215
60	10.71.97.216/29	10.71.97.217 – 10.71.97.222	10.71.97.223
61	10.71.97.224/29	10.71.97.225 – 10.71.97.230	10.71.97.231
62	10.71.97.232/29	10.71.97.233 – 10.71.97.238	10.71.97.239
63	10.71.97.240/29	10.71.97.241 – 10.71.97.246	10.71.97.247
64	10.71.97.248/29	10.71.97.249 – 10.71.97.254	10.71.97.255
65	10.71.98.0/29	10.71.98.1 – 10.71.98.6	10.71.98.7
66	10.71.98.8/29	10.71.98.9 – 10.71.98.14	10.71.98.15
67	10.71.98.16/29	10.71.98.17 – 10.71.98.22	10.71.98.23
68	10.71.98.24/29	10.71.98.25 – 10.71.98.30	10.71.98.31
69	10.71.98.32/29	10.71.98.33 – 10.71.98.38	10.71.98.39
70	10.71.98.40/29	10.71.98.41 – 10.71.98.46	10.71.98.47
71	10.71.98.48/29	10.71.98.49 – 10.71.98.54	10.71.98.55
72	10.71.98.56/29	10.71.98.57 – 10.71.98.62	10.71.98.63
73	10.71.98.64/29	10.71.98.65 – 10.71.98.70	10.71.98.71
74	10.71.98.72/29	10.71.98.73 – 10.71.98.78	10.71.98.79
75	10.71.98.80/29	10.71.98.81 – 10.71.98.86	10.71.98.87
76	10.71.98.88/29	10.71.98.89 – 10.71.98.94	10.71.98.95
77	10.71.98.96/29	10.71.98.97 – 10.71.98.102	10.71.98.103
78	10.71.98.104/29	10.71.98.105 – 10.71.98.110	10.71.98.111
79	10.71.98.112/29	10.71.98.113 – 10.71.98.118	10.71.98.119
80	10.71.98.120/29	10.71.98.121 – 10.71.98.126	10.71.98.127
81	10.71.98.128/29	10.71.98.129 – 10.71.98.134	10.71.98.135
82	10.71.98.136/29	10.71.98.137 – 10.71.98.142	10.71.98.143
83	10.71.98.144/29	10.71.98.145 – 10.71.98.150	10.71.98.151
84	10.71.98.152/29	10.71.98.153 – 10.71.98.158	10.71.98.159
85	10.71.98.160/29	10.71.98.161 – 10.71.98.166	10.71.98.167
86	10.71.98.168/29	10.71.98.169 – 10.71.98.174	10.71.98.175
87	10.71.98.176/29	10.71.98.177 – 10.71.98.182	10.71.98.183
88	10.71.98.184/29	10.71.98.185 – 10.71.98.190	10.71.98.191
89	10.71.98.192/29	10.71.98.193 – 10.71.98.198	10.71.98.199
90	10.71.98.200/29	10.71.98.201 – 10.71.98.206	10.71.98.207
91	10.71.98.208/29	10.71.98.209 – 10.71.98.214	10.71.98.215
92	10.71.98.216/29	10.71.98.217 – 10.71.98.222	10.71.98.223
93	10.71.98.224/29	10.71.98.225 – 10.71.98.230	10.71.98.231
94	10.71.98.232/29	10.71.98.233 – 10.71.98.238	10.71.98.239
95	10.71.98.240/29	10.71.98.241 – 10.71.98.246	10.71.98.247
96	10.71.98.248/29	10.71.98.249 – 10.71.98.254	10.71.98.255
97	10.71.99.0/29	10.71.99.1 – 10.71.99.6	10.71.99.7
98	10.71.99.8/29	10.71.99.9 – 10.71.99.14	10.71.99.15
99	10.71.99.16/29	10.71.99.17 – 10.71.99.22	10.71.99.23
100	10.71.99.24/29	10.71.99.25 – 10.71.99.30	10.71.99.31
101	10.71.99.32/29	10.71.99.33 – 10.71.99.38	10.71.99.39
102	10.71.99.40/29	10.71.99.41 – 10.71.99.46	10.71.99.47
103	10.71.99.48/29	10.71.99.49 – 10.71.99.54	10.71.99.55
104	10.71.99.56/29	10.71.99.57 – 10.71.99.62	10.71.99.63
105	10.71.99.64/29	10.71.99.65 – 10.71.99.70	10.71.99.71
106	10.71.99.72/29	10.71.99.73 – 10.71.99.78	10.71.99.79
107	10.71.99.80/29	10.71.99.81 – 10.71.99.86	10.71.99.87
108	10.71.99.88/29	10.71.99.89 – 10.71.99.94	10.71.99.95
109	10.71.99.96/29	10.71.99.97 – 10.71.99.102	10.71.99.103
110	10.71.99.104/29	10.71.99.105 – 10.71.99.110	10.71.99.111
111	10.71.99.112/29	10.71.99.113 – 10.71.99.118	10.71.99.119
112	10.71.99.120/29	10.71.99.121 – 10.71.99.126	10.71.99.127
113	10.71.99.128/29	10.71.99.129 – 10.71.99.134	10.71.99.135
114	10.71.99.136/29	10.71.99.137 – 10.71.99.142	10.71.99.143
115	10.71.99.144/29	10.71.99.145 – 10.71.99.150	10.71.99.151
116	10.71.99.152/29	10.71.99.153 – 10.71.99.158	10.71.99.159
117	10.71.99.160/29	10.71.99.161 – 10.71.99.166	10.71.99.167
118	10.71.99.168/29	10.71.99.169 – 10.71.99.174	10.71.99.175
119	10.71.99.176/29	10.71.99.177 – 10.71.99.182	10.71.99.183
120	10.71.99.184/29	10.71.99.185 – 10.71.99.190	10.71.99.191
121	10.71.99.192/29	10.71.99.193 – 10.71.99.198	10.71.99.199
122	10.71.99.200/29	10.71.99.201 – 10.71.99.206	10.71.99.207
123	10.71.99.208/29	10.71.99.209 – 10.71.99.214	10.71.99.215
124	10.71.99.216/29	10.71.99.217 – 10.71.99.222	10.71.99.223
125	10.71.99.224/29	10.71.99.225 – 10.71.99.230	10.71.99.231
126	10.71.99.232/29	10.71.99.233 – 10.71.99.238	10.71.99.239
127	10.71.99.240/29	10.71.99.241 – 10.71.99.246	10.71.99.247
128	10.71.99.248/29	10.71.99.249 – 10.71.99.254	10.71.99.255

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 →