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)10.4.24.0/22

network10.4.24.0/22

broadcast10.4.27.255

first host10.4.24.1

last host10.4.27.254

subnet mask255.255.252.0

wildcard0.0.3.255

addresses1,024

usable hosts1,022

classA

ipcalc 10.4.24.0/22

address00001010.00000100.00011000.00000000

subnet mask11111111.11111111.11111100.00000000

network00001010.00000100.00011000.00000000

broadcast00001010.00000100.00011011.11111111

green = network part, grey = host part

hex0x0a041800

decimal168040448

reverse dns0.24.4.10.in-addr.arpa

ipv4-mapped::ffff:a04:1800

/22 split into /29 · 128 subnets

close ×

#	network	host range	broadcast
1	10.4.24.0/29	10.4.24.1 – 10.4.24.6	10.4.24.7
2	10.4.24.8/29	10.4.24.9 – 10.4.24.14	10.4.24.15
3	10.4.24.16/29	10.4.24.17 – 10.4.24.22	10.4.24.23
4	10.4.24.24/29	10.4.24.25 – 10.4.24.30	10.4.24.31
5	10.4.24.32/29	10.4.24.33 – 10.4.24.38	10.4.24.39
6	10.4.24.40/29	10.4.24.41 – 10.4.24.46	10.4.24.47
7	10.4.24.48/29	10.4.24.49 – 10.4.24.54	10.4.24.55
8	10.4.24.56/29	10.4.24.57 – 10.4.24.62	10.4.24.63
9	10.4.24.64/29	10.4.24.65 – 10.4.24.70	10.4.24.71
10	10.4.24.72/29	10.4.24.73 – 10.4.24.78	10.4.24.79
11	10.4.24.80/29	10.4.24.81 – 10.4.24.86	10.4.24.87
12	10.4.24.88/29	10.4.24.89 – 10.4.24.94	10.4.24.95
13	10.4.24.96/29	10.4.24.97 – 10.4.24.102	10.4.24.103
14	10.4.24.104/29	10.4.24.105 – 10.4.24.110	10.4.24.111
15	10.4.24.112/29	10.4.24.113 – 10.4.24.118	10.4.24.119
16	10.4.24.120/29	10.4.24.121 – 10.4.24.126	10.4.24.127
17	10.4.24.128/29	10.4.24.129 – 10.4.24.134	10.4.24.135
18	10.4.24.136/29	10.4.24.137 – 10.4.24.142	10.4.24.143
19	10.4.24.144/29	10.4.24.145 – 10.4.24.150	10.4.24.151
20	10.4.24.152/29	10.4.24.153 – 10.4.24.158	10.4.24.159
21	10.4.24.160/29	10.4.24.161 – 10.4.24.166	10.4.24.167
22	10.4.24.168/29	10.4.24.169 – 10.4.24.174	10.4.24.175
23	10.4.24.176/29	10.4.24.177 – 10.4.24.182	10.4.24.183
24	10.4.24.184/29	10.4.24.185 – 10.4.24.190	10.4.24.191
25	10.4.24.192/29	10.4.24.193 – 10.4.24.198	10.4.24.199
26	10.4.24.200/29	10.4.24.201 – 10.4.24.206	10.4.24.207
27	10.4.24.208/29	10.4.24.209 – 10.4.24.214	10.4.24.215
28	10.4.24.216/29	10.4.24.217 – 10.4.24.222	10.4.24.223
29	10.4.24.224/29	10.4.24.225 – 10.4.24.230	10.4.24.231
30	10.4.24.232/29	10.4.24.233 – 10.4.24.238	10.4.24.239
31	10.4.24.240/29	10.4.24.241 – 10.4.24.246	10.4.24.247
32	10.4.24.248/29	10.4.24.249 – 10.4.24.254	10.4.24.255
33	10.4.25.0/29	10.4.25.1 – 10.4.25.6	10.4.25.7
34	10.4.25.8/29	10.4.25.9 – 10.4.25.14	10.4.25.15
35	10.4.25.16/29	10.4.25.17 – 10.4.25.22	10.4.25.23
36	10.4.25.24/29	10.4.25.25 – 10.4.25.30	10.4.25.31
37	10.4.25.32/29	10.4.25.33 – 10.4.25.38	10.4.25.39
38	10.4.25.40/29	10.4.25.41 – 10.4.25.46	10.4.25.47
39	10.4.25.48/29	10.4.25.49 – 10.4.25.54	10.4.25.55
40	10.4.25.56/29	10.4.25.57 – 10.4.25.62	10.4.25.63
41	10.4.25.64/29	10.4.25.65 – 10.4.25.70	10.4.25.71
42	10.4.25.72/29	10.4.25.73 – 10.4.25.78	10.4.25.79
43	10.4.25.80/29	10.4.25.81 – 10.4.25.86	10.4.25.87
44	10.4.25.88/29	10.4.25.89 – 10.4.25.94	10.4.25.95
45	10.4.25.96/29	10.4.25.97 – 10.4.25.102	10.4.25.103
46	10.4.25.104/29	10.4.25.105 – 10.4.25.110	10.4.25.111
47	10.4.25.112/29	10.4.25.113 – 10.4.25.118	10.4.25.119
48	10.4.25.120/29	10.4.25.121 – 10.4.25.126	10.4.25.127
49	10.4.25.128/29	10.4.25.129 – 10.4.25.134	10.4.25.135
50	10.4.25.136/29	10.4.25.137 – 10.4.25.142	10.4.25.143
51	10.4.25.144/29	10.4.25.145 – 10.4.25.150	10.4.25.151
52	10.4.25.152/29	10.4.25.153 – 10.4.25.158	10.4.25.159
53	10.4.25.160/29	10.4.25.161 – 10.4.25.166	10.4.25.167
54	10.4.25.168/29	10.4.25.169 – 10.4.25.174	10.4.25.175
55	10.4.25.176/29	10.4.25.177 – 10.4.25.182	10.4.25.183
56	10.4.25.184/29	10.4.25.185 – 10.4.25.190	10.4.25.191
57	10.4.25.192/29	10.4.25.193 – 10.4.25.198	10.4.25.199
58	10.4.25.200/29	10.4.25.201 – 10.4.25.206	10.4.25.207
59	10.4.25.208/29	10.4.25.209 – 10.4.25.214	10.4.25.215
60	10.4.25.216/29	10.4.25.217 – 10.4.25.222	10.4.25.223
61	10.4.25.224/29	10.4.25.225 – 10.4.25.230	10.4.25.231
62	10.4.25.232/29	10.4.25.233 – 10.4.25.238	10.4.25.239
63	10.4.25.240/29	10.4.25.241 – 10.4.25.246	10.4.25.247
64	10.4.25.248/29	10.4.25.249 – 10.4.25.254	10.4.25.255
65	10.4.26.0/29	10.4.26.1 – 10.4.26.6	10.4.26.7
66	10.4.26.8/29	10.4.26.9 – 10.4.26.14	10.4.26.15
67	10.4.26.16/29	10.4.26.17 – 10.4.26.22	10.4.26.23
68	10.4.26.24/29	10.4.26.25 – 10.4.26.30	10.4.26.31
69	10.4.26.32/29	10.4.26.33 – 10.4.26.38	10.4.26.39
70	10.4.26.40/29	10.4.26.41 – 10.4.26.46	10.4.26.47
71	10.4.26.48/29	10.4.26.49 – 10.4.26.54	10.4.26.55
72	10.4.26.56/29	10.4.26.57 – 10.4.26.62	10.4.26.63
73	10.4.26.64/29	10.4.26.65 – 10.4.26.70	10.4.26.71
74	10.4.26.72/29	10.4.26.73 – 10.4.26.78	10.4.26.79
75	10.4.26.80/29	10.4.26.81 – 10.4.26.86	10.4.26.87
76	10.4.26.88/29	10.4.26.89 – 10.4.26.94	10.4.26.95
77	10.4.26.96/29	10.4.26.97 – 10.4.26.102	10.4.26.103
78	10.4.26.104/29	10.4.26.105 – 10.4.26.110	10.4.26.111
79	10.4.26.112/29	10.4.26.113 – 10.4.26.118	10.4.26.119
80	10.4.26.120/29	10.4.26.121 – 10.4.26.126	10.4.26.127
81	10.4.26.128/29	10.4.26.129 – 10.4.26.134	10.4.26.135
82	10.4.26.136/29	10.4.26.137 – 10.4.26.142	10.4.26.143
83	10.4.26.144/29	10.4.26.145 – 10.4.26.150	10.4.26.151
84	10.4.26.152/29	10.4.26.153 – 10.4.26.158	10.4.26.159
85	10.4.26.160/29	10.4.26.161 – 10.4.26.166	10.4.26.167
86	10.4.26.168/29	10.4.26.169 – 10.4.26.174	10.4.26.175
87	10.4.26.176/29	10.4.26.177 – 10.4.26.182	10.4.26.183
88	10.4.26.184/29	10.4.26.185 – 10.4.26.190	10.4.26.191
89	10.4.26.192/29	10.4.26.193 – 10.4.26.198	10.4.26.199
90	10.4.26.200/29	10.4.26.201 – 10.4.26.206	10.4.26.207
91	10.4.26.208/29	10.4.26.209 – 10.4.26.214	10.4.26.215
92	10.4.26.216/29	10.4.26.217 – 10.4.26.222	10.4.26.223
93	10.4.26.224/29	10.4.26.225 – 10.4.26.230	10.4.26.231
94	10.4.26.232/29	10.4.26.233 – 10.4.26.238	10.4.26.239
95	10.4.26.240/29	10.4.26.241 – 10.4.26.246	10.4.26.247
96	10.4.26.248/29	10.4.26.249 – 10.4.26.254	10.4.26.255
97	10.4.27.0/29	10.4.27.1 – 10.4.27.6	10.4.27.7
98	10.4.27.8/29	10.4.27.9 – 10.4.27.14	10.4.27.15
99	10.4.27.16/29	10.4.27.17 – 10.4.27.22	10.4.27.23
100	10.4.27.24/29	10.4.27.25 – 10.4.27.30	10.4.27.31
101	10.4.27.32/29	10.4.27.33 – 10.4.27.38	10.4.27.39
102	10.4.27.40/29	10.4.27.41 – 10.4.27.46	10.4.27.47
103	10.4.27.48/29	10.4.27.49 – 10.4.27.54	10.4.27.55
104	10.4.27.56/29	10.4.27.57 – 10.4.27.62	10.4.27.63
105	10.4.27.64/29	10.4.27.65 – 10.4.27.70	10.4.27.71
106	10.4.27.72/29	10.4.27.73 – 10.4.27.78	10.4.27.79
107	10.4.27.80/29	10.4.27.81 – 10.4.27.86	10.4.27.87
108	10.4.27.88/29	10.4.27.89 – 10.4.27.94	10.4.27.95
109	10.4.27.96/29	10.4.27.97 – 10.4.27.102	10.4.27.103
110	10.4.27.104/29	10.4.27.105 – 10.4.27.110	10.4.27.111
111	10.4.27.112/29	10.4.27.113 – 10.4.27.118	10.4.27.119
112	10.4.27.120/29	10.4.27.121 – 10.4.27.126	10.4.27.127
113	10.4.27.128/29	10.4.27.129 – 10.4.27.134	10.4.27.135
114	10.4.27.136/29	10.4.27.137 – 10.4.27.142	10.4.27.143
115	10.4.27.144/29	10.4.27.145 – 10.4.27.150	10.4.27.151
116	10.4.27.152/29	10.4.27.153 – 10.4.27.158	10.4.27.159
117	10.4.27.160/29	10.4.27.161 – 10.4.27.166	10.4.27.167
118	10.4.27.168/29	10.4.27.169 – 10.4.27.174	10.4.27.175
119	10.4.27.176/29	10.4.27.177 – 10.4.27.182	10.4.27.183
120	10.4.27.184/29	10.4.27.185 – 10.4.27.190	10.4.27.191
121	10.4.27.192/29	10.4.27.193 – 10.4.27.198	10.4.27.199
122	10.4.27.200/29	10.4.27.201 – 10.4.27.206	10.4.27.207
123	10.4.27.208/29	10.4.27.209 – 10.4.27.214	10.4.27.215
124	10.4.27.216/29	10.4.27.217 – 10.4.27.222	10.4.27.223
125	10.4.27.224/29	10.4.27.225 – 10.4.27.230	10.4.27.231
126	10.4.27.232/29	10.4.27.233 – 10.4.27.238	10.4.27.239
127	10.4.27.240/29	10.4.27.241 – 10.4.27.246	10.4.27.247
128	10.4.27.248/29	10.4.27.249 – 10.4.27.254	10.4.27.255

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 →