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)10.166.60.0/22

network10.166.60.0/22

broadcast10.166.63.255

first host10.166.60.1

last host10.166.63.254

subnet mask255.255.252.0

wildcard0.0.3.255

addresses1,024

usable hosts1,022

classA

ipcalc 10.166.60.0/22

address00001010.10100110.00111100.00000000

subnet mask11111111.11111111.11111100.00000000

network00001010.10100110.00111100.00000000

broadcast00001010.10100110.00111111.11111111

green = network part, grey = host part

hex0x0aa63c00

decimal178666496

reverse dns0.60.166.10.in-addr.arpa

ipv4-mapped::ffff:aa6:3c00

/22 split into /29 · 128 subnets

close ×

#	network	host range	broadcast
1	10.166.60.0/29	10.166.60.1 – 10.166.60.6	10.166.60.7
2	10.166.60.8/29	10.166.60.9 – 10.166.60.14	10.166.60.15
3	10.166.60.16/29	10.166.60.17 – 10.166.60.22	10.166.60.23
4	10.166.60.24/29	10.166.60.25 – 10.166.60.30	10.166.60.31
5	10.166.60.32/29	10.166.60.33 – 10.166.60.38	10.166.60.39
6	10.166.60.40/29	10.166.60.41 – 10.166.60.46	10.166.60.47
7	10.166.60.48/29	10.166.60.49 – 10.166.60.54	10.166.60.55
8	10.166.60.56/29	10.166.60.57 – 10.166.60.62	10.166.60.63
9	10.166.60.64/29	10.166.60.65 – 10.166.60.70	10.166.60.71
10	10.166.60.72/29	10.166.60.73 – 10.166.60.78	10.166.60.79
11	10.166.60.80/29	10.166.60.81 – 10.166.60.86	10.166.60.87
12	10.166.60.88/29	10.166.60.89 – 10.166.60.94	10.166.60.95
13	10.166.60.96/29	10.166.60.97 – 10.166.60.102	10.166.60.103
14	10.166.60.104/29	10.166.60.105 – 10.166.60.110	10.166.60.111
15	10.166.60.112/29	10.166.60.113 – 10.166.60.118	10.166.60.119
16	10.166.60.120/29	10.166.60.121 – 10.166.60.126	10.166.60.127
17	10.166.60.128/29	10.166.60.129 – 10.166.60.134	10.166.60.135
18	10.166.60.136/29	10.166.60.137 – 10.166.60.142	10.166.60.143
19	10.166.60.144/29	10.166.60.145 – 10.166.60.150	10.166.60.151
20	10.166.60.152/29	10.166.60.153 – 10.166.60.158	10.166.60.159
21	10.166.60.160/29	10.166.60.161 – 10.166.60.166	10.166.60.167
22	10.166.60.168/29	10.166.60.169 – 10.166.60.174	10.166.60.175
23	10.166.60.176/29	10.166.60.177 – 10.166.60.182	10.166.60.183
24	10.166.60.184/29	10.166.60.185 – 10.166.60.190	10.166.60.191
25	10.166.60.192/29	10.166.60.193 – 10.166.60.198	10.166.60.199
26	10.166.60.200/29	10.166.60.201 – 10.166.60.206	10.166.60.207
27	10.166.60.208/29	10.166.60.209 – 10.166.60.214	10.166.60.215
28	10.166.60.216/29	10.166.60.217 – 10.166.60.222	10.166.60.223
29	10.166.60.224/29	10.166.60.225 – 10.166.60.230	10.166.60.231
30	10.166.60.232/29	10.166.60.233 – 10.166.60.238	10.166.60.239
31	10.166.60.240/29	10.166.60.241 – 10.166.60.246	10.166.60.247
32	10.166.60.248/29	10.166.60.249 – 10.166.60.254	10.166.60.255
33	10.166.61.0/29	10.166.61.1 – 10.166.61.6	10.166.61.7
34	10.166.61.8/29	10.166.61.9 – 10.166.61.14	10.166.61.15
35	10.166.61.16/29	10.166.61.17 – 10.166.61.22	10.166.61.23
36	10.166.61.24/29	10.166.61.25 – 10.166.61.30	10.166.61.31
37	10.166.61.32/29	10.166.61.33 – 10.166.61.38	10.166.61.39
38	10.166.61.40/29	10.166.61.41 – 10.166.61.46	10.166.61.47
39	10.166.61.48/29	10.166.61.49 – 10.166.61.54	10.166.61.55
40	10.166.61.56/29	10.166.61.57 – 10.166.61.62	10.166.61.63
41	10.166.61.64/29	10.166.61.65 – 10.166.61.70	10.166.61.71
42	10.166.61.72/29	10.166.61.73 – 10.166.61.78	10.166.61.79
43	10.166.61.80/29	10.166.61.81 – 10.166.61.86	10.166.61.87
44	10.166.61.88/29	10.166.61.89 – 10.166.61.94	10.166.61.95
45	10.166.61.96/29	10.166.61.97 – 10.166.61.102	10.166.61.103
46	10.166.61.104/29	10.166.61.105 – 10.166.61.110	10.166.61.111
47	10.166.61.112/29	10.166.61.113 – 10.166.61.118	10.166.61.119
48	10.166.61.120/29	10.166.61.121 – 10.166.61.126	10.166.61.127
49	10.166.61.128/29	10.166.61.129 – 10.166.61.134	10.166.61.135
50	10.166.61.136/29	10.166.61.137 – 10.166.61.142	10.166.61.143
51	10.166.61.144/29	10.166.61.145 – 10.166.61.150	10.166.61.151
52	10.166.61.152/29	10.166.61.153 – 10.166.61.158	10.166.61.159
53	10.166.61.160/29	10.166.61.161 – 10.166.61.166	10.166.61.167
54	10.166.61.168/29	10.166.61.169 – 10.166.61.174	10.166.61.175
55	10.166.61.176/29	10.166.61.177 – 10.166.61.182	10.166.61.183
56	10.166.61.184/29	10.166.61.185 – 10.166.61.190	10.166.61.191
57	10.166.61.192/29	10.166.61.193 – 10.166.61.198	10.166.61.199
58	10.166.61.200/29	10.166.61.201 – 10.166.61.206	10.166.61.207
59	10.166.61.208/29	10.166.61.209 – 10.166.61.214	10.166.61.215
60	10.166.61.216/29	10.166.61.217 – 10.166.61.222	10.166.61.223
61	10.166.61.224/29	10.166.61.225 – 10.166.61.230	10.166.61.231
62	10.166.61.232/29	10.166.61.233 – 10.166.61.238	10.166.61.239
63	10.166.61.240/29	10.166.61.241 – 10.166.61.246	10.166.61.247
64	10.166.61.248/29	10.166.61.249 – 10.166.61.254	10.166.61.255
65	10.166.62.0/29	10.166.62.1 – 10.166.62.6	10.166.62.7
66	10.166.62.8/29	10.166.62.9 – 10.166.62.14	10.166.62.15
67	10.166.62.16/29	10.166.62.17 – 10.166.62.22	10.166.62.23
68	10.166.62.24/29	10.166.62.25 – 10.166.62.30	10.166.62.31
69	10.166.62.32/29	10.166.62.33 – 10.166.62.38	10.166.62.39
70	10.166.62.40/29	10.166.62.41 – 10.166.62.46	10.166.62.47
71	10.166.62.48/29	10.166.62.49 – 10.166.62.54	10.166.62.55
72	10.166.62.56/29	10.166.62.57 – 10.166.62.62	10.166.62.63
73	10.166.62.64/29	10.166.62.65 – 10.166.62.70	10.166.62.71
74	10.166.62.72/29	10.166.62.73 – 10.166.62.78	10.166.62.79
75	10.166.62.80/29	10.166.62.81 – 10.166.62.86	10.166.62.87
76	10.166.62.88/29	10.166.62.89 – 10.166.62.94	10.166.62.95
77	10.166.62.96/29	10.166.62.97 – 10.166.62.102	10.166.62.103
78	10.166.62.104/29	10.166.62.105 – 10.166.62.110	10.166.62.111
79	10.166.62.112/29	10.166.62.113 – 10.166.62.118	10.166.62.119
80	10.166.62.120/29	10.166.62.121 – 10.166.62.126	10.166.62.127
81	10.166.62.128/29	10.166.62.129 – 10.166.62.134	10.166.62.135
82	10.166.62.136/29	10.166.62.137 – 10.166.62.142	10.166.62.143
83	10.166.62.144/29	10.166.62.145 – 10.166.62.150	10.166.62.151
84	10.166.62.152/29	10.166.62.153 – 10.166.62.158	10.166.62.159
85	10.166.62.160/29	10.166.62.161 – 10.166.62.166	10.166.62.167
86	10.166.62.168/29	10.166.62.169 – 10.166.62.174	10.166.62.175
87	10.166.62.176/29	10.166.62.177 – 10.166.62.182	10.166.62.183
88	10.166.62.184/29	10.166.62.185 – 10.166.62.190	10.166.62.191
89	10.166.62.192/29	10.166.62.193 – 10.166.62.198	10.166.62.199
90	10.166.62.200/29	10.166.62.201 – 10.166.62.206	10.166.62.207
91	10.166.62.208/29	10.166.62.209 – 10.166.62.214	10.166.62.215
92	10.166.62.216/29	10.166.62.217 – 10.166.62.222	10.166.62.223
93	10.166.62.224/29	10.166.62.225 – 10.166.62.230	10.166.62.231
94	10.166.62.232/29	10.166.62.233 – 10.166.62.238	10.166.62.239
95	10.166.62.240/29	10.166.62.241 – 10.166.62.246	10.166.62.247
96	10.166.62.248/29	10.166.62.249 – 10.166.62.254	10.166.62.255
97	10.166.63.0/29	10.166.63.1 – 10.166.63.6	10.166.63.7
98	10.166.63.8/29	10.166.63.9 – 10.166.63.14	10.166.63.15
99	10.166.63.16/29	10.166.63.17 – 10.166.63.22	10.166.63.23
100	10.166.63.24/29	10.166.63.25 – 10.166.63.30	10.166.63.31
101	10.166.63.32/29	10.166.63.33 – 10.166.63.38	10.166.63.39
102	10.166.63.40/29	10.166.63.41 – 10.166.63.46	10.166.63.47
103	10.166.63.48/29	10.166.63.49 – 10.166.63.54	10.166.63.55
104	10.166.63.56/29	10.166.63.57 – 10.166.63.62	10.166.63.63
105	10.166.63.64/29	10.166.63.65 – 10.166.63.70	10.166.63.71
106	10.166.63.72/29	10.166.63.73 – 10.166.63.78	10.166.63.79
107	10.166.63.80/29	10.166.63.81 – 10.166.63.86	10.166.63.87
108	10.166.63.88/29	10.166.63.89 – 10.166.63.94	10.166.63.95
109	10.166.63.96/29	10.166.63.97 – 10.166.63.102	10.166.63.103
110	10.166.63.104/29	10.166.63.105 – 10.166.63.110	10.166.63.111
111	10.166.63.112/29	10.166.63.113 – 10.166.63.118	10.166.63.119
112	10.166.63.120/29	10.166.63.121 – 10.166.63.126	10.166.63.127
113	10.166.63.128/29	10.166.63.129 – 10.166.63.134	10.166.63.135
114	10.166.63.136/29	10.166.63.137 – 10.166.63.142	10.166.63.143
115	10.166.63.144/29	10.166.63.145 – 10.166.63.150	10.166.63.151
116	10.166.63.152/29	10.166.63.153 – 10.166.63.158	10.166.63.159
117	10.166.63.160/29	10.166.63.161 – 10.166.63.166	10.166.63.167
118	10.166.63.168/29	10.166.63.169 – 10.166.63.174	10.166.63.175
119	10.166.63.176/29	10.166.63.177 – 10.166.63.182	10.166.63.183
120	10.166.63.184/29	10.166.63.185 – 10.166.63.190	10.166.63.191
121	10.166.63.192/29	10.166.63.193 – 10.166.63.198	10.166.63.199
122	10.166.63.200/29	10.166.63.201 – 10.166.63.206	10.166.63.207
123	10.166.63.208/29	10.166.63.209 – 10.166.63.214	10.166.63.215
124	10.166.63.216/29	10.166.63.217 – 10.166.63.222	10.166.63.223
125	10.166.63.224/29	10.166.63.225 – 10.166.63.230	10.166.63.231
126	10.166.63.232/29	10.166.63.233 – 10.166.63.238	10.166.63.239
127	10.166.63.240/29	10.166.63.241 – 10.166.63.246	10.166.63.247
128	10.166.63.248/29	10.166.63.249 – 10.166.63.254	10.166.63.255

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 →