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)10.27.76.0/22

network10.27.76.0/22

broadcast10.27.79.255

first host10.27.76.1

last host10.27.79.254

subnet mask255.255.252.0

wildcard0.0.3.255

addresses1,024

usable hosts1,022

classA

ipcalc 10.27.76.0/22

address00001010.00011011.01001100.00000000

subnet mask11111111.11111111.11111100.00000000

network00001010.00011011.01001100.00000000

broadcast00001010.00011011.01001111.11111111

green = network part, grey = host part

hex0x0a1b4c00

decimal169561088

reverse dns0.76.27.10.in-addr.arpa

ipv4-mapped::ffff:a1b:4c00

/22 split into /29 · 128 subnets

close ×

#	network	host range	broadcast
1	10.27.76.0/29	10.27.76.1 – 10.27.76.6	10.27.76.7
2	10.27.76.8/29	10.27.76.9 – 10.27.76.14	10.27.76.15
3	10.27.76.16/29	10.27.76.17 – 10.27.76.22	10.27.76.23
4	10.27.76.24/29	10.27.76.25 – 10.27.76.30	10.27.76.31
5	10.27.76.32/29	10.27.76.33 – 10.27.76.38	10.27.76.39
6	10.27.76.40/29	10.27.76.41 – 10.27.76.46	10.27.76.47
7	10.27.76.48/29	10.27.76.49 – 10.27.76.54	10.27.76.55
8	10.27.76.56/29	10.27.76.57 – 10.27.76.62	10.27.76.63
9	10.27.76.64/29	10.27.76.65 – 10.27.76.70	10.27.76.71
10	10.27.76.72/29	10.27.76.73 – 10.27.76.78	10.27.76.79
11	10.27.76.80/29	10.27.76.81 – 10.27.76.86	10.27.76.87
12	10.27.76.88/29	10.27.76.89 – 10.27.76.94	10.27.76.95
13	10.27.76.96/29	10.27.76.97 – 10.27.76.102	10.27.76.103
14	10.27.76.104/29	10.27.76.105 – 10.27.76.110	10.27.76.111
15	10.27.76.112/29	10.27.76.113 – 10.27.76.118	10.27.76.119
16	10.27.76.120/29	10.27.76.121 – 10.27.76.126	10.27.76.127
17	10.27.76.128/29	10.27.76.129 – 10.27.76.134	10.27.76.135
18	10.27.76.136/29	10.27.76.137 – 10.27.76.142	10.27.76.143
19	10.27.76.144/29	10.27.76.145 – 10.27.76.150	10.27.76.151
20	10.27.76.152/29	10.27.76.153 – 10.27.76.158	10.27.76.159
21	10.27.76.160/29	10.27.76.161 – 10.27.76.166	10.27.76.167
22	10.27.76.168/29	10.27.76.169 – 10.27.76.174	10.27.76.175
23	10.27.76.176/29	10.27.76.177 – 10.27.76.182	10.27.76.183
24	10.27.76.184/29	10.27.76.185 – 10.27.76.190	10.27.76.191
25	10.27.76.192/29	10.27.76.193 – 10.27.76.198	10.27.76.199
26	10.27.76.200/29	10.27.76.201 – 10.27.76.206	10.27.76.207
27	10.27.76.208/29	10.27.76.209 – 10.27.76.214	10.27.76.215
28	10.27.76.216/29	10.27.76.217 – 10.27.76.222	10.27.76.223
29	10.27.76.224/29	10.27.76.225 – 10.27.76.230	10.27.76.231
30	10.27.76.232/29	10.27.76.233 – 10.27.76.238	10.27.76.239
31	10.27.76.240/29	10.27.76.241 – 10.27.76.246	10.27.76.247
32	10.27.76.248/29	10.27.76.249 – 10.27.76.254	10.27.76.255
33	10.27.77.0/29	10.27.77.1 – 10.27.77.6	10.27.77.7
34	10.27.77.8/29	10.27.77.9 – 10.27.77.14	10.27.77.15
35	10.27.77.16/29	10.27.77.17 – 10.27.77.22	10.27.77.23
36	10.27.77.24/29	10.27.77.25 – 10.27.77.30	10.27.77.31
37	10.27.77.32/29	10.27.77.33 – 10.27.77.38	10.27.77.39
38	10.27.77.40/29	10.27.77.41 – 10.27.77.46	10.27.77.47
39	10.27.77.48/29	10.27.77.49 – 10.27.77.54	10.27.77.55
40	10.27.77.56/29	10.27.77.57 – 10.27.77.62	10.27.77.63
41	10.27.77.64/29	10.27.77.65 – 10.27.77.70	10.27.77.71
42	10.27.77.72/29	10.27.77.73 – 10.27.77.78	10.27.77.79
43	10.27.77.80/29	10.27.77.81 – 10.27.77.86	10.27.77.87
44	10.27.77.88/29	10.27.77.89 – 10.27.77.94	10.27.77.95
45	10.27.77.96/29	10.27.77.97 – 10.27.77.102	10.27.77.103
46	10.27.77.104/29	10.27.77.105 – 10.27.77.110	10.27.77.111
47	10.27.77.112/29	10.27.77.113 – 10.27.77.118	10.27.77.119
48	10.27.77.120/29	10.27.77.121 – 10.27.77.126	10.27.77.127
49	10.27.77.128/29	10.27.77.129 – 10.27.77.134	10.27.77.135
50	10.27.77.136/29	10.27.77.137 – 10.27.77.142	10.27.77.143
51	10.27.77.144/29	10.27.77.145 – 10.27.77.150	10.27.77.151
52	10.27.77.152/29	10.27.77.153 – 10.27.77.158	10.27.77.159
53	10.27.77.160/29	10.27.77.161 – 10.27.77.166	10.27.77.167
54	10.27.77.168/29	10.27.77.169 – 10.27.77.174	10.27.77.175
55	10.27.77.176/29	10.27.77.177 – 10.27.77.182	10.27.77.183
56	10.27.77.184/29	10.27.77.185 – 10.27.77.190	10.27.77.191
57	10.27.77.192/29	10.27.77.193 – 10.27.77.198	10.27.77.199
58	10.27.77.200/29	10.27.77.201 – 10.27.77.206	10.27.77.207
59	10.27.77.208/29	10.27.77.209 – 10.27.77.214	10.27.77.215
60	10.27.77.216/29	10.27.77.217 – 10.27.77.222	10.27.77.223
61	10.27.77.224/29	10.27.77.225 – 10.27.77.230	10.27.77.231
62	10.27.77.232/29	10.27.77.233 – 10.27.77.238	10.27.77.239
63	10.27.77.240/29	10.27.77.241 – 10.27.77.246	10.27.77.247
64	10.27.77.248/29	10.27.77.249 – 10.27.77.254	10.27.77.255
65	10.27.78.0/29	10.27.78.1 – 10.27.78.6	10.27.78.7
66	10.27.78.8/29	10.27.78.9 – 10.27.78.14	10.27.78.15
67	10.27.78.16/29	10.27.78.17 – 10.27.78.22	10.27.78.23
68	10.27.78.24/29	10.27.78.25 – 10.27.78.30	10.27.78.31
69	10.27.78.32/29	10.27.78.33 – 10.27.78.38	10.27.78.39
70	10.27.78.40/29	10.27.78.41 – 10.27.78.46	10.27.78.47
71	10.27.78.48/29	10.27.78.49 – 10.27.78.54	10.27.78.55
72	10.27.78.56/29	10.27.78.57 – 10.27.78.62	10.27.78.63
73	10.27.78.64/29	10.27.78.65 – 10.27.78.70	10.27.78.71
74	10.27.78.72/29	10.27.78.73 – 10.27.78.78	10.27.78.79
75	10.27.78.80/29	10.27.78.81 – 10.27.78.86	10.27.78.87
76	10.27.78.88/29	10.27.78.89 – 10.27.78.94	10.27.78.95
77	10.27.78.96/29	10.27.78.97 – 10.27.78.102	10.27.78.103
78	10.27.78.104/29	10.27.78.105 – 10.27.78.110	10.27.78.111
79	10.27.78.112/29	10.27.78.113 – 10.27.78.118	10.27.78.119
80	10.27.78.120/29	10.27.78.121 – 10.27.78.126	10.27.78.127
81	10.27.78.128/29	10.27.78.129 – 10.27.78.134	10.27.78.135
82	10.27.78.136/29	10.27.78.137 – 10.27.78.142	10.27.78.143
83	10.27.78.144/29	10.27.78.145 – 10.27.78.150	10.27.78.151
84	10.27.78.152/29	10.27.78.153 – 10.27.78.158	10.27.78.159
85	10.27.78.160/29	10.27.78.161 – 10.27.78.166	10.27.78.167
86	10.27.78.168/29	10.27.78.169 – 10.27.78.174	10.27.78.175
87	10.27.78.176/29	10.27.78.177 – 10.27.78.182	10.27.78.183
88	10.27.78.184/29	10.27.78.185 – 10.27.78.190	10.27.78.191
89	10.27.78.192/29	10.27.78.193 – 10.27.78.198	10.27.78.199
90	10.27.78.200/29	10.27.78.201 – 10.27.78.206	10.27.78.207
91	10.27.78.208/29	10.27.78.209 – 10.27.78.214	10.27.78.215
92	10.27.78.216/29	10.27.78.217 – 10.27.78.222	10.27.78.223
93	10.27.78.224/29	10.27.78.225 – 10.27.78.230	10.27.78.231
94	10.27.78.232/29	10.27.78.233 – 10.27.78.238	10.27.78.239
95	10.27.78.240/29	10.27.78.241 – 10.27.78.246	10.27.78.247
96	10.27.78.248/29	10.27.78.249 – 10.27.78.254	10.27.78.255
97	10.27.79.0/29	10.27.79.1 – 10.27.79.6	10.27.79.7
98	10.27.79.8/29	10.27.79.9 – 10.27.79.14	10.27.79.15
99	10.27.79.16/29	10.27.79.17 – 10.27.79.22	10.27.79.23
100	10.27.79.24/29	10.27.79.25 – 10.27.79.30	10.27.79.31
101	10.27.79.32/29	10.27.79.33 – 10.27.79.38	10.27.79.39
102	10.27.79.40/29	10.27.79.41 – 10.27.79.46	10.27.79.47
103	10.27.79.48/29	10.27.79.49 – 10.27.79.54	10.27.79.55
104	10.27.79.56/29	10.27.79.57 – 10.27.79.62	10.27.79.63
105	10.27.79.64/29	10.27.79.65 – 10.27.79.70	10.27.79.71
106	10.27.79.72/29	10.27.79.73 – 10.27.79.78	10.27.79.79
107	10.27.79.80/29	10.27.79.81 – 10.27.79.86	10.27.79.87
108	10.27.79.88/29	10.27.79.89 – 10.27.79.94	10.27.79.95
109	10.27.79.96/29	10.27.79.97 – 10.27.79.102	10.27.79.103
110	10.27.79.104/29	10.27.79.105 – 10.27.79.110	10.27.79.111
111	10.27.79.112/29	10.27.79.113 – 10.27.79.118	10.27.79.119
112	10.27.79.120/29	10.27.79.121 – 10.27.79.126	10.27.79.127
113	10.27.79.128/29	10.27.79.129 – 10.27.79.134	10.27.79.135
114	10.27.79.136/29	10.27.79.137 – 10.27.79.142	10.27.79.143
115	10.27.79.144/29	10.27.79.145 – 10.27.79.150	10.27.79.151
116	10.27.79.152/29	10.27.79.153 – 10.27.79.158	10.27.79.159
117	10.27.79.160/29	10.27.79.161 – 10.27.79.166	10.27.79.167
118	10.27.79.168/29	10.27.79.169 – 10.27.79.174	10.27.79.175
119	10.27.79.176/29	10.27.79.177 – 10.27.79.182	10.27.79.183
120	10.27.79.184/29	10.27.79.185 – 10.27.79.190	10.27.79.191
121	10.27.79.192/29	10.27.79.193 – 10.27.79.198	10.27.79.199
122	10.27.79.200/29	10.27.79.201 – 10.27.79.206	10.27.79.207
123	10.27.79.208/29	10.27.79.209 – 10.27.79.214	10.27.79.215
124	10.27.79.216/29	10.27.79.217 – 10.27.79.222	10.27.79.223
125	10.27.79.224/29	10.27.79.225 – 10.27.79.230	10.27.79.231
126	10.27.79.232/29	10.27.79.233 – 10.27.79.238	10.27.79.239
127	10.27.79.240/29	10.27.79.241 – 10.27.79.246	10.27.79.247
128	10.27.79.248/29	10.27.79.249 – 10.27.79.254	10.27.79.255

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 →