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)10.45.92.0/22

network10.45.92.0/22

broadcast10.45.95.255

first host10.45.92.1

last host10.45.95.254

subnet mask255.255.252.0

wildcard0.0.3.255

addresses1,024

usable hosts1,022

classA

ipcalc 10.45.92.0/22

address00001010.00101101.01011100.00000000

subnet mask11111111.11111111.11111100.00000000

network00001010.00101101.01011100.00000000

broadcast00001010.00101101.01011111.11111111

green = network part, grey = host part

hex0x0a2d5c00

decimal170744832

reverse dns0.92.45.10.in-addr.arpa

ipv4-mapped::ffff:a2d:5c00

/22 split into /29 · 128 subnets

close ×

#	network	host range	broadcast
1	10.45.92.0/29	10.45.92.1 – 10.45.92.6	10.45.92.7
2	10.45.92.8/29	10.45.92.9 – 10.45.92.14	10.45.92.15
3	10.45.92.16/29	10.45.92.17 – 10.45.92.22	10.45.92.23
4	10.45.92.24/29	10.45.92.25 – 10.45.92.30	10.45.92.31
5	10.45.92.32/29	10.45.92.33 – 10.45.92.38	10.45.92.39
6	10.45.92.40/29	10.45.92.41 – 10.45.92.46	10.45.92.47
7	10.45.92.48/29	10.45.92.49 – 10.45.92.54	10.45.92.55
8	10.45.92.56/29	10.45.92.57 – 10.45.92.62	10.45.92.63
9	10.45.92.64/29	10.45.92.65 – 10.45.92.70	10.45.92.71
10	10.45.92.72/29	10.45.92.73 – 10.45.92.78	10.45.92.79
11	10.45.92.80/29	10.45.92.81 – 10.45.92.86	10.45.92.87
12	10.45.92.88/29	10.45.92.89 – 10.45.92.94	10.45.92.95
13	10.45.92.96/29	10.45.92.97 – 10.45.92.102	10.45.92.103
14	10.45.92.104/29	10.45.92.105 – 10.45.92.110	10.45.92.111
15	10.45.92.112/29	10.45.92.113 – 10.45.92.118	10.45.92.119
16	10.45.92.120/29	10.45.92.121 – 10.45.92.126	10.45.92.127
17	10.45.92.128/29	10.45.92.129 – 10.45.92.134	10.45.92.135
18	10.45.92.136/29	10.45.92.137 – 10.45.92.142	10.45.92.143
19	10.45.92.144/29	10.45.92.145 – 10.45.92.150	10.45.92.151
20	10.45.92.152/29	10.45.92.153 – 10.45.92.158	10.45.92.159
21	10.45.92.160/29	10.45.92.161 – 10.45.92.166	10.45.92.167
22	10.45.92.168/29	10.45.92.169 – 10.45.92.174	10.45.92.175
23	10.45.92.176/29	10.45.92.177 – 10.45.92.182	10.45.92.183
24	10.45.92.184/29	10.45.92.185 – 10.45.92.190	10.45.92.191
25	10.45.92.192/29	10.45.92.193 – 10.45.92.198	10.45.92.199
26	10.45.92.200/29	10.45.92.201 – 10.45.92.206	10.45.92.207
27	10.45.92.208/29	10.45.92.209 – 10.45.92.214	10.45.92.215
28	10.45.92.216/29	10.45.92.217 – 10.45.92.222	10.45.92.223
29	10.45.92.224/29	10.45.92.225 – 10.45.92.230	10.45.92.231
30	10.45.92.232/29	10.45.92.233 – 10.45.92.238	10.45.92.239
31	10.45.92.240/29	10.45.92.241 – 10.45.92.246	10.45.92.247
32	10.45.92.248/29	10.45.92.249 – 10.45.92.254	10.45.92.255
33	10.45.93.0/29	10.45.93.1 – 10.45.93.6	10.45.93.7
34	10.45.93.8/29	10.45.93.9 – 10.45.93.14	10.45.93.15
35	10.45.93.16/29	10.45.93.17 – 10.45.93.22	10.45.93.23
36	10.45.93.24/29	10.45.93.25 – 10.45.93.30	10.45.93.31
37	10.45.93.32/29	10.45.93.33 – 10.45.93.38	10.45.93.39
38	10.45.93.40/29	10.45.93.41 – 10.45.93.46	10.45.93.47
39	10.45.93.48/29	10.45.93.49 – 10.45.93.54	10.45.93.55
40	10.45.93.56/29	10.45.93.57 – 10.45.93.62	10.45.93.63
41	10.45.93.64/29	10.45.93.65 – 10.45.93.70	10.45.93.71
42	10.45.93.72/29	10.45.93.73 – 10.45.93.78	10.45.93.79
43	10.45.93.80/29	10.45.93.81 – 10.45.93.86	10.45.93.87
44	10.45.93.88/29	10.45.93.89 – 10.45.93.94	10.45.93.95
45	10.45.93.96/29	10.45.93.97 – 10.45.93.102	10.45.93.103
46	10.45.93.104/29	10.45.93.105 – 10.45.93.110	10.45.93.111
47	10.45.93.112/29	10.45.93.113 – 10.45.93.118	10.45.93.119
48	10.45.93.120/29	10.45.93.121 – 10.45.93.126	10.45.93.127
49	10.45.93.128/29	10.45.93.129 – 10.45.93.134	10.45.93.135
50	10.45.93.136/29	10.45.93.137 – 10.45.93.142	10.45.93.143
51	10.45.93.144/29	10.45.93.145 – 10.45.93.150	10.45.93.151
52	10.45.93.152/29	10.45.93.153 – 10.45.93.158	10.45.93.159
53	10.45.93.160/29	10.45.93.161 – 10.45.93.166	10.45.93.167
54	10.45.93.168/29	10.45.93.169 – 10.45.93.174	10.45.93.175
55	10.45.93.176/29	10.45.93.177 – 10.45.93.182	10.45.93.183
56	10.45.93.184/29	10.45.93.185 – 10.45.93.190	10.45.93.191
57	10.45.93.192/29	10.45.93.193 – 10.45.93.198	10.45.93.199
58	10.45.93.200/29	10.45.93.201 – 10.45.93.206	10.45.93.207
59	10.45.93.208/29	10.45.93.209 – 10.45.93.214	10.45.93.215
60	10.45.93.216/29	10.45.93.217 – 10.45.93.222	10.45.93.223
61	10.45.93.224/29	10.45.93.225 – 10.45.93.230	10.45.93.231
62	10.45.93.232/29	10.45.93.233 – 10.45.93.238	10.45.93.239
63	10.45.93.240/29	10.45.93.241 – 10.45.93.246	10.45.93.247
64	10.45.93.248/29	10.45.93.249 – 10.45.93.254	10.45.93.255
65	10.45.94.0/29	10.45.94.1 – 10.45.94.6	10.45.94.7
66	10.45.94.8/29	10.45.94.9 – 10.45.94.14	10.45.94.15
67	10.45.94.16/29	10.45.94.17 – 10.45.94.22	10.45.94.23
68	10.45.94.24/29	10.45.94.25 – 10.45.94.30	10.45.94.31
69	10.45.94.32/29	10.45.94.33 – 10.45.94.38	10.45.94.39
70	10.45.94.40/29	10.45.94.41 – 10.45.94.46	10.45.94.47
71	10.45.94.48/29	10.45.94.49 – 10.45.94.54	10.45.94.55
72	10.45.94.56/29	10.45.94.57 – 10.45.94.62	10.45.94.63
73	10.45.94.64/29	10.45.94.65 – 10.45.94.70	10.45.94.71
74	10.45.94.72/29	10.45.94.73 – 10.45.94.78	10.45.94.79
75	10.45.94.80/29	10.45.94.81 – 10.45.94.86	10.45.94.87
76	10.45.94.88/29	10.45.94.89 – 10.45.94.94	10.45.94.95
77	10.45.94.96/29	10.45.94.97 – 10.45.94.102	10.45.94.103
78	10.45.94.104/29	10.45.94.105 – 10.45.94.110	10.45.94.111
79	10.45.94.112/29	10.45.94.113 – 10.45.94.118	10.45.94.119
80	10.45.94.120/29	10.45.94.121 – 10.45.94.126	10.45.94.127
81	10.45.94.128/29	10.45.94.129 – 10.45.94.134	10.45.94.135
82	10.45.94.136/29	10.45.94.137 – 10.45.94.142	10.45.94.143
83	10.45.94.144/29	10.45.94.145 – 10.45.94.150	10.45.94.151
84	10.45.94.152/29	10.45.94.153 – 10.45.94.158	10.45.94.159
85	10.45.94.160/29	10.45.94.161 – 10.45.94.166	10.45.94.167
86	10.45.94.168/29	10.45.94.169 – 10.45.94.174	10.45.94.175
87	10.45.94.176/29	10.45.94.177 – 10.45.94.182	10.45.94.183
88	10.45.94.184/29	10.45.94.185 – 10.45.94.190	10.45.94.191
89	10.45.94.192/29	10.45.94.193 – 10.45.94.198	10.45.94.199
90	10.45.94.200/29	10.45.94.201 – 10.45.94.206	10.45.94.207
91	10.45.94.208/29	10.45.94.209 – 10.45.94.214	10.45.94.215
92	10.45.94.216/29	10.45.94.217 – 10.45.94.222	10.45.94.223
93	10.45.94.224/29	10.45.94.225 – 10.45.94.230	10.45.94.231
94	10.45.94.232/29	10.45.94.233 – 10.45.94.238	10.45.94.239
95	10.45.94.240/29	10.45.94.241 – 10.45.94.246	10.45.94.247
96	10.45.94.248/29	10.45.94.249 – 10.45.94.254	10.45.94.255
97	10.45.95.0/29	10.45.95.1 – 10.45.95.6	10.45.95.7
98	10.45.95.8/29	10.45.95.9 – 10.45.95.14	10.45.95.15
99	10.45.95.16/29	10.45.95.17 – 10.45.95.22	10.45.95.23
100	10.45.95.24/29	10.45.95.25 – 10.45.95.30	10.45.95.31
101	10.45.95.32/29	10.45.95.33 – 10.45.95.38	10.45.95.39
102	10.45.95.40/29	10.45.95.41 – 10.45.95.46	10.45.95.47
103	10.45.95.48/29	10.45.95.49 – 10.45.95.54	10.45.95.55
104	10.45.95.56/29	10.45.95.57 – 10.45.95.62	10.45.95.63
105	10.45.95.64/29	10.45.95.65 – 10.45.95.70	10.45.95.71
106	10.45.95.72/29	10.45.95.73 – 10.45.95.78	10.45.95.79
107	10.45.95.80/29	10.45.95.81 – 10.45.95.86	10.45.95.87
108	10.45.95.88/29	10.45.95.89 – 10.45.95.94	10.45.95.95
109	10.45.95.96/29	10.45.95.97 – 10.45.95.102	10.45.95.103
110	10.45.95.104/29	10.45.95.105 – 10.45.95.110	10.45.95.111
111	10.45.95.112/29	10.45.95.113 – 10.45.95.118	10.45.95.119
112	10.45.95.120/29	10.45.95.121 – 10.45.95.126	10.45.95.127
113	10.45.95.128/29	10.45.95.129 – 10.45.95.134	10.45.95.135
114	10.45.95.136/29	10.45.95.137 – 10.45.95.142	10.45.95.143
115	10.45.95.144/29	10.45.95.145 – 10.45.95.150	10.45.95.151
116	10.45.95.152/29	10.45.95.153 – 10.45.95.158	10.45.95.159
117	10.45.95.160/29	10.45.95.161 – 10.45.95.166	10.45.95.167
118	10.45.95.168/29	10.45.95.169 – 10.45.95.174	10.45.95.175
119	10.45.95.176/29	10.45.95.177 – 10.45.95.182	10.45.95.183
120	10.45.95.184/29	10.45.95.185 – 10.45.95.190	10.45.95.191
121	10.45.95.192/29	10.45.95.193 – 10.45.95.198	10.45.95.199
122	10.45.95.200/29	10.45.95.201 – 10.45.95.206	10.45.95.207
123	10.45.95.208/29	10.45.95.209 – 10.45.95.214	10.45.95.215
124	10.45.95.216/29	10.45.95.217 – 10.45.95.222	10.45.95.223
125	10.45.95.224/29	10.45.95.225 – 10.45.95.230	10.45.95.231
126	10.45.95.232/29	10.45.95.233 – 10.45.95.238	10.45.95.239
127	10.45.95.240/29	10.45.95.241 – 10.45.95.246	10.45.95.247
128	10.45.95.248/29	10.45.95.249 – 10.45.95.254	10.45.95.255

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 →