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)10.45.196.0/22

network10.45.196.0/22

broadcast10.45.199.255

first host10.45.196.1

last host10.45.199.254

subnet mask255.255.252.0

wildcard0.0.3.255

addresses1,024

usable hosts1,022

classA

ipcalc 10.45.196.0/22

address00001010.00101101.11000100.00000000

subnet mask11111111.11111111.11111100.00000000

network00001010.00101101.11000100.00000000

broadcast00001010.00101101.11000111.11111111

green = network part, grey = host part

hex0x0a2dc400

decimal170771456

reverse dns0.196.45.10.in-addr.arpa

ipv4-mapped::ffff:a2d:c400

/22 split into /29 · 128 subnets

close ×

#	network	host range	broadcast
1	10.45.196.0/29	10.45.196.1 – 10.45.196.6	10.45.196.7
2	10.45.196.8/29	10.45.196.9 – 10.45.196.14	10.45.196.15
3	10.45.196.16/29	10.45.196.17 – 10.45.196.22	10.45.196.23
4	10.45.196.24/29	10.45.196.25 – 10.45.196.30	10.45.196.31
5	10.45.196.32/29	10.45.196.33 – 10.45.196.38	10.45.196.39
6	10.45.196.40/29	10.45.196.41 – 10.45.196.46	10.45.196.47
7	10.45.196.48/29	10.45.196.49 – 10.45.196.54	10.45.196.55
8	10.45.196.56/29	10.45.196.57 – 10.45.196.62	10.45.196.63
9	10.45.196.64/29	10.45.196.65 – 10.45.196.70	10.45.196.71
10	10.45.196.72/29	10.45.196.73 – 10.45.196.78	10.45.196.79
11	10.45.196.80/29	10.45.196.81 – 10.45.196.86	10.45.196.87
12	10.45.196.88/29	10.45.196.89 – 10.45.196.94	10.45.196.95
13	10.45.196.96/29	10.45.196.97 – 10.45.196.102	10.45.196.103
14	10.45.196.104/29	10.45.196.105 – 10.45.196.110	10.45.196.111
15	10.45.196.112/29	10.45.196.113 – 10.45.196.118	10.45.196.119
16	10.45.196.120/29	10.45.196.121 – 10.45.196.126	10.45.196.127
17	10.45.196.128/29	10.45.196.129 – 10.45.196.134	10.45.196.135
18	10.45.196.136/29	10.45.196.137 – 10.45.196.142	10.45.196.143
19	10.45.196.144/29	10.45.196.145 – 10.45.196.150	10.45.196.151
20	10.45.196.152/29	10.45.196.153 – 10.45.196.158	10.45.196.159
21	10.45.196.160/29	10.45.196.161 – 10.45.196.166	10.45.196.167
22	10.45.196.168/29	10.45.196.169 – 10.45.196.174	10.45.196.175
23	10.45.196.176/29	10.45.196.177 – 10.45.196.182	10.45.196.183
24	10.45.196.184/29	10.45.196.185 – 10.45.196.190	10.45.196.191
25	10.45.196.192/29	10.45.196.193 – 10.45.196.198	10.45.196.199
26	10.45.196.200/29	10.45.196.201 – 10.45.196.206	10.45.196.207
27	10.45.196.208/29	10.45.196.209 – 10.45.196.214	10.45.196.215
28	10.45.196.216/29	10.45.196.217 – 10.45.196.222	10.45.196.223
29	10.45.196.224/29	10.45.196.225 – 10.45.196.230	10.45.196.231
30	10.45.196.232/29	10.45.196.233 – 10.45.196.238	10.45.196.239
31	10.45.196.240/29	10.45.196.241 – 10.45.196.246	10.45.196.247
32	10.45.196.248/29	10.45.196.249 – 10.45.196.254	10.45.196.255
33	10.45.197.0/29	10.45.197.1 – 10.45.197.6	10.45.197.7
34	10.45.197.8/29	10.45.197.9 – 10.45.197.14	10.45.197.15
35	10.45.197.16/29	10.45.197.17 – 10.45.197.22	10.45.197.23
36	10.45.197.24/29	10.45.197.25 – 10.45.197.30	10.45.197.31
37	10.45.197.32/29	10.45.197.33 – 10.45.197.38	10.45.197.39
38	10.45.197.40/29	10.45.197.41 – 10.45.197.46	10.45.197.47
39	10.45.197.48/29	10.45.197.49 – 10.45.197.54	10.45.197.55
40	10.45.197.56/29	10.45.197.57 – 10.45.197.62	10.45.197.63
41	10.45.197.64/29	10.45.197.65 – 10.45.197.70	10.45.197.71
42	10.45.197.72/29	10.45.197.73 – 10.45.197.78	10.45.197.79
43	10.45.197.80/29	10.45.197.81 – 10.45.197.86	10.45.197.87
44	10.45.197.88/29	10.45.197.89 – 10.45.197.94	10.45.197.95
45	10.45.197.96/29	10.45.197.97 – 10.45.197.102	10.45.197.103
46	10.45.197.104/29	10.45.197.105 – 10.45.197.110	10.45.197.111
47	10.45.197.112/29	10.45.197.113 – 10.45.197.118	10.45.197.119
48	10.45.197.120/29	10.45.197.121 – 10.45.197.126	10.45.197.127
49	10.45.197.128/29	10.45.197.129 – 10.45.197.134	10.45.197.135
50	10.45.197.136/29	10.45.197.137 – 10.45.197.142	10.45.197.143
51	10.45.197.144/29	10.45.197.145 – 10.45.197.150	10.45.197.151
52	10.45.197.152/29	10.45.197.153 – 10.45.197.158	10.45.197.159
53	10.45.197.160/29	10.45.197.161 – 10.45.197.166	10.45.197.167
54	10.45.197.168/29	10.45.197.169 – 10.45.197.174	10.45.197.175
55	10.45.197.176/29	10.45.197.177 – 10.45.197.182	10.45.197.183
56	10.45.197.184/29	10.45.197.185 – 10.45.197.190	10.45.197.191
57	10.45.197.192/29	10.45.197.193 – 10.45.197.198	10.45.197.199
58	10.45.197.200/29	10.45.197.201 – 10.45.197.206	10.45.197.207
59	10.45.197.208/29	10.45.197.209 – 10.45.197.214	10.45.197.215
60	10.45.197.216/29	10.45.197.217 – 10.45.197.222	10.45.197.223
61	10.45.197.224/29	10.45.197.225 – 10.45.197.230	10.45.197.231
62	10.45.197.232/29	10.45.197.233 – 10.45.197.238	10.45.197.239
63	10.45.197.240/29	10.45.197.241 – 10.45.197.246	10.45.197.247
64	10.45.197.248/29	10.45.197.249 – 10.45.197.254	10.45.197.255
65	10.45.198.0/29	10.45.198.1 – 10.45.198.6	10.45.198.7
66	10.45.198.8/29	10.45.198.9 – 10.45.198.14	10.45.198.15
67	10.45.198.16/29	10.45.198.17 – 10.45.198.22	10.45.198.23
68	10.45.198.24/29	10.45.198.25 – 10.45.198.30	10.45.198.31
69	10.45.198.32/29	10.45.198.33 – 10.45.198.38	10.45.198.39
70	10.45.198.40/29	10.45.198.41 – 10.45.198.46	10.45.198.47
71	10.45.198.48/29	10.45.198.49 – 10.45.198.54	10.45.198.55
72	10.45.198.56/29	10.45.198.57 – 10.45.198.62	10.45.198.63
73	10.45.198.64/29	10.45.198.65 – 10.45.198.70	10.45.198.71
74	10.45.198.72/29	10.45.198.73 – 10.45.198.78	10.45.198.79
75	10.45.198.80/29	10.45.198.81 – 10.45.198.86	10.45.198.87
76	10.45.198.88/29	10.45.198.89 – 10.45.198.94	10.45.198.95
77	10.45.198.96/29	10.45.198.97 – 10.45.198.102	10.45.198.103
78	10.45.198.104/29	10.45.198.105 – 10.45.198.110	10.45.198.111
79	10.45.198.112/29	10.45.198.113 – 10.45.198.118	10.45.198.119
80	10.45.198.120/29	10.45.198.121 – 10.45.198.126	10.45.198.127
81	10.45.198.128/29	10.45.198.129 – 10.45.198.134	10.45.198.135
82	10.45.198.136/29	10.45.198.137 – 10.45.198.142	10.45.198.143
83	10.45.198.144/29	10.45.198.145 – 10.45.198.150	10.45.198.151
84	10.45.198.152/29	10.45.198.153 – 10.45.198.158	10.45.198.159
85	10.45.198.160/29	10.45.198.161 – 10.45.198.166	10.45.198.167
86	10.45.198.168/29	10.45.198.169 – 10.45.198.174	10.45.198.175
87	10.45.198.176/29	10.45.198.177 – 10.45.198.182	10.45.198.183
88	10.45.198.184/29	10.45.198.185 – 10.45.198.190	10.45.198.191
89	10.45.198.192/29	10.45.198.193 – 10.45.198.198	10.45.198.199
90	10.45.198.200/29	10.45.198.201 – 10.45.198.206	10.45.198.207
91	10.45.198.208/29	10.45.198.209 – 10.45.198.214	10.45.198.215
92	10.45.198.216/29	10.45.198.217 – 10.45.198.222	10.45.198.223
93	10.45.198.224/29	10.45.198.225 – 10.45.198.230	10.45.198.231
94	10.45.198.232/29	10.45.198.233 – 10.45.198.238	10.45.198.239
95	10.45.198.240/29	10.45.198.241 – 10.45.198.246	10.45.198.247
96	10.45.198.248/29	10.45.198.249 – 10.45.198.254	10.45.198.255
97	10.45.199.0/29	10.45.199.1 – 10.45.199.6	10.45.199.7
98	10.45.199.8/29	10.45.199.9 – 10.45.199.14	10.45.199.15
99	10.45.199.16/29	10.45.199.17 – 10.45.199.22	10.45.199.23
100	10.45.199.24/29	10.45.199.25 – 10.45.199.30	10.45.199.31
101	10.45.199.32/29	10.45.199.33 – 10.45.199.38	10.45.199.39
102	10.45.199.40/29	10.45.199.41 – 10.45.199.46	10.45.199.47
103	10.45.199.48/29	10.45.199.49 – 10.45.199.54	10.45.199.55
104	10.45.199.56/29	10.45.199.57 – 10.45.199.62	10.45.199.63
105	10.45.199.64/29	10.45.199.65 – 10.45.199.70	10.45.199.71
106	10.45.199.72/29	10.45.199.73 – 10.45.199.78	10.45.199.79
107	10.45.199.80/29	10.45.199.81 – 10.45.199.86	10.45.199.87
108	10.45.199.88/29	10.45.199.89 – 10.45.199.94	10.45.199.95
109	10.45.199.96/29	10.45.199.97 – 10.45.199.102	10.45.199.103
110	10.45.199.104/29	10.45.199.105 – 10.45.199.110	10.45.199.111
111	10.45.199.112/29	10.45.199.113 – 10.45.199.118	10.45.199.119
112	10.45.199.120/29	10.45.199.121 – 10.45.199.126	10.45.199.127
113	10.45.199.128/29	10.45.199.129 – 10.45.199.134	10.45.199.135
114	10.45.199.136/29	10.45.199.137 – 10.45.199.142	10.45.199.143
115	10.45.199.144/29	10.45.199.145 – 10.45.199.150	10.45.199.151
116	10.45.199.152/29	10.45.199.153 – 10.45.199.158	10.45.199.159
117	10.45.199.160/29	10.45.199.161 – 10.45.199.166	10.45.199.167
118	10.45.199.168/29	10.45.199.169 – 10.45.199.174	10.45.199.175
119	10.45.199.176/29	10.45.199.177 – 10.45.199.182	10.45.199.183
120	10.45.199.184/29	10.45.199.185 – 10.45.199.190	10.45.199.191
121	10.45.199.192/29	10.45.199.193 – 10.45.199.198	10.45.199.199
122	10.45.199.200/29	10.45.199.201 – 10.45.199.206	10.45.199.207
123	10.45.199.208/29	10.45.199.209 – 10.45.199.214	10.45.199.215
124	10.45.199.216/29	10.45.199.217 – 10.45.199.222	10.45.199.223
125	10.45.199.224/29	10.45.199.225 – 10.45.199.230	10.45.199.231
126	10.45.199.232/29	10.45.199.233 – 10.45.199.238	10.45.199.239
127	10.45.199.240/29	10.45.199.241 – 10.45.199.246	10.45.199.247
128	10.45.199.248/29	10.45.199.249 – 10.45.199.254	10.45.199.255

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 →