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)10.76.200.0/23

network10.76.200.0/23

broadcast10.76.201.255

first host10.76.200.1

last host10.76.201.254

subnet mask255.255.254.0

wildcard0.0.1.255

addresses512

usable hosts510

classA

ipcalc 10.76.200.0/23

address00001010.01001100.11001000.00000000

subnet mask11111111.11111111.11111110.00000000

network00001010.01001100.11001000.00000000

broadcast00001010.01001100.11001001.11111111

green = network part, grey = host part

hex0x0a4cc800

decimal172804096

reverse dns0.200.76.10.in-addr.arpa

ipv4-mapped::ffff:a4c:c800

/23 split into /30 · 128 subnets

close ×

#	network	host range	broadcast
1	10.76.200.0/30	10.76.200.1 – 10.76.200.2	10.76.200.3
2	10.76.200.4/30	10.76.200.5 – 10.76.200.6	10.76.200.7
3	10.76.200.8/30	10.76.200.9 – 10.76.200.10	10.76.200.11
4	10.76.200.12/30	10.76.200.13 – 10.76.200.14	10.76.200.15
5	10.76.200.16/30	10.76.200.17 – 10.76.200.18	10.76.200.19
6	10.76.200.20/30	10.76.200.21 – 10.76.200.22	10.76.200.23
7	10.76.200.24/30	10.76.200.25 – 10.76.200.26	10.76.200.27
8	10.76.200.28/30	10.76.200.29 – 10.76.200.30	10.76.200.31
9	10.76.200.32/30	10.76.200.33 – 10.76.200.34	10.76.200.35
10	10.76.200.36/30	10.76.200.37 – 10.76.200.38	10.76.200.39
11	10.76.200.40/30	10.76.200.41 – 10.76.200.42	10.76.200.43
12	10.76.200.44/30	10.76.200.45 – 10.76.200.46	10.76.200.47
13	10.76.200.48/30	10.76.200.49 – 10.76.200.50	10.76.200.51
14	10.76.200.52/30	10.76.200.53 – 10.76.200.54	10.76.200.55
15	10.76.200.56/30	10.76.200.57 – 10.76.200.58	10.76.200.59
16	10.76.200.60/30	10.76.200.61 – 10.76.200.62	10.76.200.63
17	10.76.200.64/30	10.76.200.65 – 10.76.200.66	10.76.200.67
18	10.76.200.68/30	10.76.200.69 – 10.76.200.70	10.76.200.71
19	10.76.200.72/30	10.76.200.73 – 10.76.200.74	10.76.200.75
20	10.76.200.76/30	10.76.200.77 – 10.76.200.78	10.76.200.79
21	10.76.200.80/30	10.76.200.81 – 10.76.200.82	10.76.200.83
22	10.76.200.84/30	10.76.200.85 – 10.76.200.86	10.76.200.87
23	10.76.200.88/30	10.76.200.89 – 10.76.200.90	10.76.200.91
24	10.76.200.92/30	10.76.200.93 – 10.76.200.94	10.76.200.95
25	10.76.200.96/30	10.76.200.97 – 10.76.200.98	10.76.200.99
26	10.76.200.100/30	10.76.200.101 – 10.76.200.102	10.76.200.103
27	10.76.200.104/30	10.76.200.105 – 10.76.200.106	10.76.200.107
28	10.76.200.108/30	10.76.200.109 – 10.76.200.110	10.76.200.111
29	10.76.200.112/30	10.76.200.113 – 10.76.200.114	10.76.200.115
30	10.76.200.116/30	10.76.200.117 – 10.76.200.118	10.76.200.119
31	10.76.200.120/30	10.76.200.121 – 10.76.200.122	10.76.200.123
32	10.76.200.124/30	10.76.200.125 – 10.76.200.126	10.76.200.127
33	10.76.200.128/30	10.76.200.129 – 10.76.200.130	10.76.200.131
34	10.76.200.132/30	10.76.200.133 – 10.76.200.134	10.76.200.135
35	10.76.200.136/30	10.76.200.137 – 10.76.200.138	10.76.200.139
36	10.76.200.140/30	10.76.200.141 – 10.76.200.142	10.76.200.143
37	10.76.200.144/30	10.76.200.145 – 10.76.200.146	10.76.200.147
38	10.76.200.148/30	10.76.200.149 – 10.76.200.150	10.76.200.151
39	10.76.200.152/30	10.76.200.153 – 10.76.200.154	10.76.200.155
40	10.76.200.156/30	10.76.200.157 – 10.76.200.158	10.76.200.159
41	10.76.200.160/30	10.76.200.161 – 10.76.200.162	10.76.200.163
42	10.76.200.164/30	10.76.200.165 – 10.76.200.166	10.76.200.167
43	10.76.200.168/30	10.76.200.169 – 10.76.200.170	10.76.200.171
44	10.76.200.172/30	10.76.200.173 – 10.76.200.174	10.76.200.175
45	10.76.200.176/30	10.76.200.177 – 10.76.200.178	10.76.200.179
46	10.76.200.180/30	10.76.200.181 – 10.76.200.182	10.76.200.183
47	10.76.200.184/30	10.76.200.185 – 10.76.200.186	10.76.200.187
48	10.76.200.188/30	10.76.200.189 – 10.76.200.190	10.76.200.191
49	10.76.200.192/30	10.76.200.193 – 10.76.200.194	10.76.200.195
50	10.76.200.196/30	10.76.200.197 – 10.76.200.198	10.76.200.199
51	10.76.200.200/30	10.76.200.201 – 10.76.200.202	10.76.200.203
52	10.76.200.204/30	10.76.200.205 – 10.76.200.206	10.76.200.207
53	10.76.200.208/30	10.76.200.209 – 10.76.200.210	10.76.200.211
54	10.76.200.212/30	10.76.200.213 – 10.76.200.214	10.76.200.215
55	10.76.200.216/30	10.76.200.217 – 10.76.200.218	10.76.200.219
56	10.76.200.220/30	10.76.200.221 – 10.76.200.222	10.76.200.223
57	10.76.200.224/30	10.76.200.225 – 10.76.200.226	10.76.200.227
58	10.76.200.228/30	10.76.200.229 – 10.76.200.230	10.76.200.231
59	10.76.200.232/30	10.76.200.233 – 10.76.200.234	10.76.200.235
60	10.76.200.236/30	10.76.200.237 – 10.76.200.238	10.76.200.239
61	10.76.200.240/30	10.76.200.241 – 10.76.200.242	10.76.200.243
62	10.76.200.244/30	10.76.200.245 – 10.76.200.246	10.76.200.247
63	10.76.200.248/30	10.76.200.249 – 10.76.200.250	10.76.200.251
64	10.76.200.252/30	10.76.200.253 – 10.76.200.254	10.76.200.255
65	10.76.201.0/30	10.76.201.1 – 10.76.201.2	10.76.201.3
66	10.76.201.4/30	10.76.201.5 – 10.76.201.6	10.76.201.7
67	10.76.201.8/30	10.76.201.9 – 10.76.201.10	10.76.201.11
68	10.76.201.12/30	10.76.201.13 – 10.76.201.14	10.76.201.15
69	10.76.201.16/30	10.76.201.17 – 10.76.201.18	10.76.201.19
70	10.76.201.20/30	10.76.201.21 – 10.76.201.22	10.76.201.23
71	10.76.201.24/30	10.76.201.25 – 10.76.201.26	10.76.201.27
72	10.76.201.28/30	10.76.201.29 – 10.76.201.30	10.76.201.31
73	10.76.201.32/30	10.76.201.33 – 10.76.201.34	10.76.201.35
74	10.76.201.36/30	10.76.201.37 – 10.76.201.38	10.76.201.39
75	10.76.201.40/30	10.76.201.41 – 10.76.201.42	10.76.201.43
76	10.76.201.44/30	10.76.201.45 – 10.76.201.46	10.76.201.47
77	10.76.201.48/30	10.76.201.49 – 10.76.201.50	10.76.201.51
78	10.76.201.52/30	10.76.201.53 – 10.76.201.54	10.76.201.55
79	10.76.201.56/30	10.76.201.57 – 10.76.201.58	10.76.201.59
80	10.76.201.60/30	10.76.201.61 – 10.76.201.62	10.76.201.63
81	10.76.201.64/30	10.76.201.65 – 10.76.201.66	10.76.201.67
82	10.76.201.68/30	10.76.201.69 – 10.76.201.70	10.76.201.71
83	10.76.201.72/30	10.76.201.73 – 10.76.201.74	10.76.201.75
84	10.76.201.76/30	10.76.201.77 – 10.76.201.78	10.76.201.79
85	10.76.201.80/30	10.76.201.81 – 10.76.201.82	10.76.201.83
86	10.76.201.84/30	10.76.201.85 – 10.76.201.86	10.76.201.87
87	10.76.201.88/30	10.76.201.89 – 10.76.201.90	10.76.201.91
88	10.76.201.92/30	10.76.201.93 – 10.76.201.94	10.76.201.95
89	10.76.201.96/30	10.76.201.97 – 10.76.201.98	10.76.201.99
90	10.76.201.100/30	10.76.201.101 – 10.76.201.102	10.76.201.103
91	10.76.201.104/30	10.76.201.105 – 10.76.201.106	10.76.201.107
92	10.76.201.108/30	10.76.201.109 – 10.76.201.110	10.76.201.111
93	10.76.201.112/30	10.76.201.113 – 10.76.201.114	10.76.201.115
94	10.76.201.116/30	10.76.201.117 – 10.76.201.118	10.76.201.119
95	10.76.201.120/30	10.76.201.121 – 10.76.201.122	10.76.201.123
96	10.76.201.124/30	10.76.201.125 – 10.76.201.126	10.76.201.127
97	10.76.201.128/30	10.76.201.129 – 10.76.201.130	10.76.201.131
98	10.76.201.132/30	10.76.201.133 – 10.76.201.134	10.76.201.135
99	10.76.201.136/30	10.76.201.137 – 10.76.201.138	10.76.201.139
100	10.76.201.140/30	10.76.201.141 – 10.76.201.142	10.76.201.143
101	10.76.201.144/30	10.76.201.145 – 10.76.201.146	10.76.201.147
102	10.76.201.148/30	10.76.201.149 – 10.76.201.150	10.76.201.151
103	10.76.201.152/30	10.76.201.153 – 10.76.201.154	10.76.201.155
104	10.76.201.156/30	10.76.201.157 – 10.76.201.158	10.76.201.159
105	10.76.201.160/30	10.76.201.161 – 10.76.201.162	10.76.201.163
106	10.76.201.164/30	10.76.201.165 – 10.76.201.166	10.76.201.167
107	10.76.201.168/30	10.76.201.169 – 10.76.201.170	10.76.201.171
108	10.76.201.172/30	10.76.201.173 – 10.76.201.174	10.76.201.175
109	10.76.201.176/30	10.76.201.177 – 10.76.201.178	10.76.201.179
110	10.76.201.180/30	10.76.201.181 – 10.76.201.182	10.76.201.183
111	10.76.201.184/30	10.76.201.185 – 10.76.201.186	10.76.201.187
112	10.76.201.188/30	10.76.201.189 – 10.76.201.190	10.76.201.191
113	10.76.201.192/30	10.76.201.193 – 10.76.201.194	10.76.201.195
114	10.76.201.196/30	10.76.201.197 – 10.76.201.198	10.76.201.199
115	10.76.201.200/30	10.76.201.201 – 10.76.201.202	10.76.201.203
116	10.76.201.204/30	10.76.201.205 – 10.76.201.206	10.76.201.207
117	10.76.201.208/30	10.76.201.209 – 10.76.201.210	10.76.201.211
118	10.76.201.212/30	10.76.201.213 – 10.76.201.214	10.76.201.215
119	10.76.201.216/30	10.76.201.217 – 10.76.201.218	10.76.201.219
120	10.76.201.220/30	10.76.201.221 – 10.76.201.222	10.76.201.223
121	10.76.201.224/30	10.76.201.225 – 10.76.201.226	10.76.201.227
122	10.76.201.228/30	10.76.201.229 – 10.76.201.230	10.76.201.231
123	10.76.201.232/30	10.76.201.233 – 10.76.201.234	10.76.201.235
124	10.76.201.236/30	10.76.201.237 – 10.76.201.238	10.76.201.239
125	10.76.201.240/30	10.76.201.241 – 10.76.201.242	10.76.201.243
126	10.76.201.244/30	10.76.201.245 – 10.76.201.246	10.76.201.247
127	10.76.201.248/30	10.76.201.249 – 10.76.201.250	10.76.201.251
128	10.76.201.252/30	10.76.201.253 – 10.76.201.254	10.76.201.255

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 /23
/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	-
/23	255.255.254.0	512	510	1
/24	255.255.255.0	256	254	2 split →
/25	255.255.255.128	128	126	4 split →
/26	255.255.255.192	64	62	8 split →
/27	255.255.255.224	32	30	16 split →
/28	255.255.255.240	16	14	32 split →
/29	255.255.255.248	8	6	64 split →
/30	255.255.255.252	4	2	128 split →
/31	255.255.255.254	2	2	256 split →
/32	255.255.255.255	1	1	512 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 →