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)10.3.200.0/22

network10.3.200.0/22

broadcast10.3.203.255

first host10.3.200.1

last host10.3.203.254

subnet mask255.255.252.0

wildcard0.0.3.255

addresses1,024

usable hosts1,022

classA

ipcalc 10.3.200.0/22

address00001010.00000011.11001000.00000000

subnet mask11111111.11111111.11111100.00000000

network00001010.00000011.11001000.00000000

broadcast00001010.00000011.11001011.11111111

green = network part, grey = host part

hex0x0a03c800

decimal168019968

reverse dns0.200.3.10.in-addr.arpa

ipv4-mapped::ffff:a03:c800

/22 split into /29 · 128 subnets

close ×

#	network	host range	broadcast
1	10.3.200.0/29	10.3.200.1 – 10.3.200.6	10.3.200.7
2	10.3.200.8/29	10.3.200.9 – 10.3.200.14	10.3.200.15
3	10.3.200.16/29	10.3.200.17 – 10.3.200.22	10.3.200.23
4	10.3.200.24/29	10.3.200.25 – 10.3.200.30	10.3.200.31
5	10.3.200.32/29	10.3.200.33 – 10.3.200.38	10.3.200.39
6	10.3.200.40/29	10.3.200.41 – 10.3.200.46	10.3.200.47
7	10.3.200.48/29	10.3.200.49 – 10.3.200.54	10.3.200.55
8	10.3.200.56/29	10.3.200.57 – 10.3.200.62	10.3.200.63
9	10.3.200.64/29	10.3.200.65 – 10.3.200.70	10.3.200.71
10	10.3.200.72/29	10.3.200.73 – 10.3.200.78	10.3.200.79
11	10.3.200.80/29	10.3.200.81 – 10.3.200.86	10.3.200.87
12	10.3.200.88/29	10.3.200.89 – 10.3.200.94	10.3.200.95
13	10.3.200.96/29	10.3.200.97 – 10.3.200.102	10.3.200.103
14	10.3.200.104/29	10.3.200.105 – 10.3.200.110	10.3.200.111
15	10.3.200.112/29	10.3.200.113 – 10.3.200.118	10.3.200.119
16	10.3.200.120/29	10.3.200.121 – 10.3.200.126	10.3.200.127
17	10.3.200.128/29	10.3.200.129 – 10.3.200.134	10.3.200.135
18	10.3.200.136/29	10.3.200.137 – 10.3.200.142	10.3.200.143
19	10.3.200.144/29	10.3.200.145 – 10.3.200.150	10.3.200.151
20	10.3.200.152/29	10.3.200.153 – 10.3.200.158	10.3.200.159
21	10.3.200.160/29	10.3.200.161 – 10.3.200.166	10.3.200.167
22	10.3.200.168/29	10.3.200.169 – 10.3.200.174	10.3.200.175
23	10.3.200.176/29	10.3.200.177 – 10.3.200.182	10.3.200.183
24	10.3.200.184/29	10.3.200.185 – 10.3.200.190	10.3.200.191
25	10.3.200.192/29	10.3.200.193 – 10.3.200.198	10.3.200.199
26	10.3.200.200/29	10.3.200.201 – 10.3.200.206	10.3.200.207
27	10.3.200.208/29	10.3.200.209 – 10.3.200.214	10.3.200.215
28	10.3.200.216/29	10.3.200.217 – 10.3.200.222	10.3.200.223
29	10.3.200.224/29	10.3.200.225 – 10.3.200.230	10.3.200.231
30	10.3.200.232/29	10.3.200.233 – 10.3.200.238	10.3.200.239
31	10.3.200.240/29	10.3.200.241 – 10.3.200.246	10.3.200.247
32	10.3.200.248/29	10.3.200.249 – 10.3.200.254	10.3.200.255
33	10.3.201.0/29	10.3.201.1 – 10.3.201.6	10.3.201.7
34	10.3.201.8/29	10.3.201.9 – 10.3.201.14	10.3.201.15
35	10.3.201.16/29	10.3.201.17 – 10.3.201.22	10.3.201.23
36	10.3.201.24/29	10.3.201.25 – 10.3.201.30	10.3.201.31
37	10.3.201.32/29	10.3.201.33 – 10.3.201.38	10.3.201.39
38	10.3.201.40/29	10.3.201.41 – 10.3.201.46	10.3.201.47
39	10.3.201.48/29	10.3.201.49 – 10.3.201.54	10.3.201.55
40	10.3.201.56/29	10.3.201.57 – 10.3.201.62	10.3.201.63
41	10.3.201.64/29	10.3.201.65 – 10.3.201.70	10.3.201.71
42	10.3.201.72/29	10.3.201.73 – 10.3.201.78	10.3.201.79
43	10.3.201.80/29	10.3.201.81 – 10.3.201.86	10.3.201.87
44	10.3.201.88/29	10.3.201.89 – 10.3.201.94	10.3.201.95
45	10.3.201.96/29	10.3.201.97 – 10.3.201.102	10.3.201.103
46	10.3.201.104/29	10.3.201.105 – 10.3.201.110	10.3.201.111
47	10.3.201.112/29	10.3.201.113 – 10.3.201.118	10.3.201.119
48	10.3.201.120/29	10.3.201.121 – 10.3.201.126	10.3.201.127
49	10.3.201.128/29	10.3.201.129 – 10.3.201.134	10.3.201.135
50	10.3.201.136/29	10.3.201.137 – 10.3.201.142	10.3.201.143
51	10.3.201.144/29	10.3.201.145 – 10.3.201.150	10.3.201.151
52	10.3.201.152/29	10.3.201.153 – 10.3.201.158	10.3.201.159
53	10.3.201.160/29	10.3.201.161 – 10.3.201.166	10.3.201.167
54	10.3.201.168/29	10.3.201.169 – 10.3.201.174	10.3.201.175
55	10.3.201.176/29	10.3.201.177 – 10.3.201.182	10.3.201.183
56	10.3.201.184/29	10.3.201.185 – 10.3.201.190	10.3.201.191
57	10.3.201.192/29	10.3.201.193 – 10.3.201.198	10.3.201.199
58	10.3.201.200/29	10.3.201.201 – 10.3.201.206	10.3.201.207
59	10.3.201.208/29	10.3.201.209 – 10.3.201.214	10.3.201.215
60	10.3.201.216/29	10.3.201.217 – 10.3.201.222	10.3.201.223
61	10.3.201.224/29	10.3.201.225 – 10.3.201.230	10.3.201.231
62	10.3.201.232/29	10.3.201.233 – 10.3.201.238	10.3.201.239
63	10.3.201.240/29	10.3.201.241 – 10.3.201.246	10.3.201.247
64	10.3.201.248/29	10.3.201.249 – 10.3.201.254	10.3.201.255
65	10.3.202.0/29	10.3.202.1 – 10.3.202.6	10.3.202.7
66	10.3.202.8/29	10.3.202.9 – 10.3.202.14	10.3.202.15
67	10.3.202.16/29	10.3.202.17 – 10.3.202.22	10.3.202.23
68	10.3.202.24/29	10.3.202.25 – 10.3.202.30	10.3.202.31
69	10.3.202.32/29	10.3.202.33 – 10.3.202.38	10.3.202.39
70	10.3.202.40/29	10.3.202.41 – 10.3.202.46	10.3.202.47
71	10.3.202.48/29	10.3.202.49 – 10.3.202.54	10.3.202.55
72	10.3.202.56/29	10.3.202.57 – 10.3.202.62	10.3.202.63
73	10.3.202.64/29	10.3.202.65 – 10.3.202.70	10.3.202.71
74	10.3.202.72/29	10.3.202.73 – 10.3.202.78	10.3.202.79
75	10.3.202.80/29	10.3.202.81 – 10.3.202.86	10.3.202.87
76	10.3.202.88/29	10.3.202.89 – 10.3.202.94	10.3.202.95
77	10.3.202.96/29	10.3.202.97 – 10.3.202.102	10.3.202.103
78	10.3.202.104/29	10.3.202.105 – 10.3.202.110	10.3.202.111
79	10.3.202.112/29	10.3.202.113 – 10.3.202.118	10.3.202.119
80	10.3.202.120/29	10.3.202.121 – 10.3.202.126	10.3.202.127
81	10.3.202.128/29	10.3.202.129 – 10.3.202.134	10.3.202.135
82	10.3.202.136/29	10.3.202.137 – 10.3.202.142	10.3.202.143
83	10.3.202.144/29	10.3.202.145 – 10.3.202.150	10.3.202.151
84	10.3.202.152/29	10.3.202.153 – 10.3.202.158	10.3.202.159
85	10.3.202.160/29	10.3.202.161 – 10.3.202.166	10.3.202.167
86	10.3.202.168/29	10.3.202.169 – 10.3.202.174	10.3.202.175
87	10.3.202.176/29	10.3.202.177 – 10.3.202.182	10.3.202.183
88	10.3.202.184/29	10.3.202.185 – 10.3.202.190	10.3.202.191
89	10.3.202.192/29	10.3.202.193 – 10.3.202.198	10.3.202.199
90	10.3.202.200/29	10.3.202.201 – 10.3.202.206	10.3.202.207
91	10.3.202.208/29	10.3.202.209 – 10.3.202.214	10.3.202.215
92	10.3.202.216/29	10.3.202.217 – 10.3.202.222	10.3.202.223
93	10.3.202.224/29	10.3.202.225 – 10.3.202.230	10.3.202.231
94	10.3.202.232/29	10.3.202.233 – 10.3.202.238	10.3.202.239
95	10.3.202.240/29	10.3.202.241 – 10.3.202.246	10.3.202.247
96	10.3.202.248/29	10.3.202.249 – 10.3.202.254	10.3.202.255
97	10.3.203.0/29	10.3.203.1 – 10.3.203.6	10.3.203.7
98	10.3.203.8/29	10.3.203.9 – 10.3.203.14	10.3.203.15
99	10.3.203.16/29	10.3.203.17 – 10.3.203.22	10.3.203.23
100	10.3.203.24/29	10.3.203.25 – 10.3.203.30	10.3.203.31
101	10.3.203.32/29	10.3.203.33 – 10.3.203.38	10.3.203.39
102	10.3.203.40/29	10.3.203.41 – 10.3.203.46	10.3.203.47
103	10.3.203.48/29	10.3.203.49 – 10.3.203.54	10.3.203.55
104	10.3.203.56/29	10.3.203.57 – 10.3.203.62	10.3.203.63
105	10.3.203.64/29	10.3.203.65 – 10.3.203.70	10.3.203.71
106	10.3.203.72/29	10.3.203.73 – 10.3.203.78	10.3.203.79
107	10.3.203.80/29	10.3.203.81 – 10.3.203.86	10.3.203.87
108	10.3.203.88/29	10.3.203.89 – 10.3.203.94	10.3.203.95
109	10.3.203.96/29	10.3.203.97 – 10.3.203.102	10.3.203.103
110	10.3.203.104/29	10.3.203.105 – 10.3.203.110	10.3.203.111
111	10.3.203.112/29	10.3.203.113 – 10.3.203.118	10.3.203.119
112	10.3.203.120/29	10.3.203.121 – 10.3.203.126	10.3.203.127
113	10.3.203.128/29	10.3.203.129 – 10.3.203.134	10.3.203.135
114	10.3.203.136/29	10.3.203.137 – 10.3.203.142	10.3.203.143
115	10.3.203.144/29	10.3.203.145 – 10.3.203.150	10.3.203.151
116	10.3.203.152/29	10.3.203.153 – 10.3.203.158	10.3.203.159
117	10.3.203.160/29	10.3.203.161 – 10.3.203.166	10.3.203.167
118	10.3.203.168/29	10.3.203.169 – 10.3.203.174	10.3.203.175
119	10.3.203.176/29	10.3.203.177 – 10.3.203.182	10.3.203.183
120	10.3.203.184/29	10.3.203.185 – 10.3.203.190	10.3.203.191
121	10.3.203.192/29	10.3.203.193 – 10.3.203.198	10.3.203.199
122	10.3.203.200/29	10.3.203.201 – 10.3.203.206	10.3.203.207
123	10.3.203.208/29	10.3.203.209 – 10.3.203.214	10.3.203.215
124	10.3.203.216/29	10.3.203.217 – 10.3.203.222	10.3.203.223
125	10.3.203.224/29	10.3.203.225 – 10.3.203.230	10.3.203.231
126	10.3.203.232/29	10.3.203.233 – 10.3.203.238	10.3.203.239
127	10.3.203.240/29	10.3.203.241 – 10.3.203.246	10.3.203.247
128	10.3.203.248/29	10.3.203.249 – 10.3.203.254	10.3.203.255

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 →