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)10.45.152.0/24

network10.45.152.0/24

broadcast10.45.152.255

first host10.45.152.1

last host10.45.152.254

subnet mask255.255.255.0

wildcard0.0.0.255

addresses256

usable hosts254

classA

ipcalc 10.45.152.0/24

address00001010.00101101.10011000.00000000

subnet mask11111111.11111111.11111111.00000000

network00001010.00101101.10011000.00000000

broadcast00001010.00101101.10011000.11111111

green = network part, grey = host part

hex0x0a2d9800

decimal170760192

reverse dns0.152.45.10.in-addr.arpa

ipv4-mapped::ffff:a2d:9800

/24 split into /31 · 128 subnets

close ×

#	network	host range	broadcast
1	10.45.152.0/31	10.45.152.0 – 10.45.152.1	10.45.152.1
2	10.45.152.2/31	10.45.152.2 – 10.45.152.3	10.45.152.3
3	10.45.152.4/31	10.45.152.4 – 10.45.152.5	10.45.152.5
4	10.45.152.6/31	10.45.152.6 – 10.45.152.7	10.45.152.7
5	10.45.152.8/31	10.45.152.8 – 10.45.152.9	10.45.152.9
6	10.45.152.10/31	10.45.152.10 – 10.45.152.11	10.45.152.11
7	10.45.152.12/31	10.45.152.12 – 10.45.152.13	10.45.152.13
8	10.45.152.14/31	10.45.152.14 – 10.45.152.15	10.45.152.15
9	10.45.152.16/31	10.45.152.16 – 10.45.152.17	10.45.152.17
10	10.45.152.18/31	10.45.152.18 – 10.45.152.19	10.45.152.19
11	10.45.152.20/31	10.45.152.20 – 10.45.152.21	10.45.152.21
12	10.45.152.22/31	10.45.152.22 – 10.45.152.23	10.45.152.23
13	10.45.152.24/31	10.45.152.24 – 10.45.152.25	10.45.152.25
14	10.45.152.26/31	10.45.152.26 – 10.45.152.27	10.45.152.27
15	10.45.152.28/31	10.45.152.28 – 10.45.152.29	10.45.152.29
16	10.45.152.30/31	10.45.152.30 – 10.45.152.31	10.45.152.31
17	10.45.152.32/31	10.45.152.32 – 10.45.152.33	10.45.152.33
18	10.45.152.34/31	10.45.152.34 – 10.45.152.35	10.45.152.35
19	10.45.152.36/31	10.45.152.36 – 10.45.152.37	10.45.152.37
20	10.45.152.38/31	10.45.152.38 – 10.45.152.39	10.45.152.39
21	10.45.152.40/31	10.45.152.40 – 10.45.152.41	10.45.152.41
22	10.45.152.42/31	10.45.152.42 – 10.45.152.43	10.45.152.43
23	10.45.152.44/31	10.45.152.44 – 10.45.152.45	10.45.152.45
24	10.45.152.46/31	10.45.152.46 – 10.45.152.47	10.45.152.47
25	10.45.152.48/31	10.45.152.48 – 10.45.152.49	10.45.152.49
26	10.45.152.50/31	10.45.152.50 – 10.45.152.51	10.45.152.51
27	10.45.152.52/31	10.45.152.52 – 10.45.152.53	10.45.152.53
28	10.45.152.54/31	10.45.152.54 – 10.45.152.55	10.45.152.55
29	10.45.152.56/31	10.45.152.56 – 10.45.152.57	10.45.152.57
30	10.45.152.58/31	10.45.152.58 – 10.45.152.59	10.45.152.59
31	10.45.152.60/31	10.45.152.60 – 10.45.152.61	10.45.152.61
32	10.45.152.62/31	10.45.152.62 – 10.45.152.63	10.45.152.63
33	10.45.152.64/31	10.45.152.64 – 10.45.152.65	10.45.152.65
34	10.45.152.66/31	10.45.152.66 – 10.45.152.67	10.45.152.67
35	10.45.152.68/31	10.45.152.68 – 10.45.152.69	10.45.152.69
36	10.45.152.70/31	10.45.152.70 – 10.45.152.71	10.45.152.71
37	10.45.152.72/31	10.45.152.72 – 10.45.152.73	10.45.152.73
38	10.45.152.74/31	10.45.152.74 – 10.45.152.75	10.45.152.75
39	10.45.152.76/31	10.45.152.76 – 10.45.152.77	10.45.152.77
40	10.45.152.78/31	10.45.152.78 – 10.45.152.79	10.45.152.79
41	10.45.152.80/31	10.45.152.80 – 10.45.152.81	10.45.152.81
42	10.45.152.82/31	10.45.152.82 – 10.45.152.83	10.45.152.83
43	10.45.152.84/31	10.45.152.84 – 10.45.152.85	10.45.152.85
44	10.45.152.86/31	10.45.152.86 – 10.45.152.87	10.45.152.87
45	10.45.152.88/31	10.45.152.88 – 10.45.152.89	10.45.152.89
46	10.45.152.90/31	10.45.152.90 – 10.45.152.91	10.45.152.91
47	10.45.152.92/31	10.45.152.92 – 10.45.152.93	10.45.152.93
48	10.45.152.94/31	10.45.152.94 – 10.45.152.95	10.45.152.95
49	10.45.152.96/31	10.45.152.96 – 10.45.152.97	10.45.152.97
50	10.45.152.98/31	10.45.152.98 – 10.45.152.99	10.45.152.99
51	10.45.152.100/31	10.45.152.100 – 10.45.152.101	10.45.152.101
52	10.45.152.102/31	10.45.152.102 – 10.45.152.103	10.45.152.103
53	10.45.152.104/31	10.45.152.104 – 10.45.152.105	10.45.152.105
54	10.45.152.106/31	10.45.152.106 – 10.45.152.107	10.45.152.107
55	10.45.152.108/31	10.45.152.108 – 10.45.152.109	10.45.152.109
56	10.45.152.110/31	10.45.152.110 – 10.45.152.111	10.45.152.111
57	10.45.152.112/31	10.45.152.112 – 10.45.152.113	10.45.152.113
58	10.45.152.114/31	10.45.152.114 – 10.45.152.115	10.45.152.115
59	10.45.152.116/31	10.45.152.116 – 10.45.152.117	10.45.152.117
60	10.45.152.118/31	10.45.152.118 – 10.45.152.119	10.45.152.119
61	10.45.152.120/31	10.45.152.120 – 10.45.152.121	10.45.152.121
62	10.45.152.122/31	10.45.152.122 – 10.45.152.123	10.45.152.123
63	10.45.152.124/31	10.45.152.124 – 10.45.152.125	10.45.152.125
64	10.45.152.126/31	10.45.152.126 – 10.45.152.127	10.45.152.127
65	10.45.152.128/31	10.45.152.128 – 10.45.152.129	10.45.152.129
66	10.45.152.130/31	10.45.152.130 – 10.45.152.131	10.45.152.131
67	10.45.152.132/31	10.45.152.132 – 10.45.152.133	10.45.152.133
68	10.45.152.134/31	10.45.152.134 – 10.45.152.135	10.45.152.135
69	10.45.152.136/31	10.45.152.136 – 10.45.152.137	10.45.152.137
70	10.45.152.138/31	10.45.152.138 – 10.45.152.139	10.45.152.139
71	10.45.152.140/31	10.45.152.140 – 10.45.152.141	10.45.152.141
72	10.45.152.142/31	10.45.152.142 – 10.45.152.143	10.45.152.143
73	10.45.152.144/31	10.45.152.144 – 10.45.152.145	10.45.152.145
74	10.45.152.146/31	10.45.152.146 – 10.45.152.147	10.45.152.147
75	10.45.152.148/31	10.45.152.148 – 10.45.152.149	10.45.152.149
76	10.45.152.150/31	10.45.152.150 – 10.45.152.151	10.45.152.151
77	10.45.152.152/31	10.45.152.152 – 10.45.152.153	10.45.152.153
78	10.45.152.154/31	10.45.152.154 – 10.45.152.155	10.45.152.155
79	10.45.152.156/31	10.45.152.156 – 10.45.152.157	10.45.152.157
80	10.45.152.158/31	10.45.152.158 – 10.45.152.159	10.45.152.159
81	10.45.152.160/31	10.45.152.160 – 10.45.152.161	10.45.152.161
82	10.45.152.162/31	10.45.152.162 – 10.45.152.163	10.45.152.163
83	10.45.152.164/31	10.45.152.164 – 10.45.152.165	10.45.152.165
84	10.45.152.166/31	10.45.152.166 – 10.45.152.167	10.45.152.167
85	10.45.152.168/31	10.45.152.168 – 10.45.152.169	10.45.152.169
86	10.45.152.170/31	10.45.152.170 – 10.45.152.171	10.45.152.171
87	10.45.152.172/31	10.45.152.172 – 10.45.152.173	10.45.152.173
88	10.45.152.174/31	10.45.152.174 – 10.45.152.175	10.45.152.175
89	10.45.152.176/31	10.45.152.176 – 10.45.152.177	10.45.152.177
90	10.45.152.178/31	10.45.152.178 – 10.45.152.179	10.45.152.179
91	10.45.152.180/31	10.45.152.180 – 10.45.152.181	10.45.152.181
92	10.45.152.182/31	10.45.152.182 – 10.45.152.183	10.45.152.183
93	10.45.152.184/31	10.45.152.184 – 10.45.152.185	10.45.152.185
94	10.45.152.186/31	10.45.152.186 – 10.45.152.187	10.45.152.187
95	10.45.152.188/31	10.45.152.188 – 10.45.152.189	10.45.152.189
96	10.45.152.190/31	10.45.152.190 – 10.45.152.191	10.45.152.191
97	10.45.152.192/31	10.45.152.192 – 10.45.152.193	10.45.152.193
98	10.45.152.194/31	10.45.152.194 – 10.45.152.195	10.45.152.195
99	10.45.152.196/31	10.45.152.196 – 10.45.152.197	10.45.152.197
100	10.45.152.198/31	10.45.152.198 – 10.45.152.199	10.45.152.199
101	10.45.152.200/31	10.45.152.200 – 10.45.152.201	10.45.152.201
102	10.45.152.202/31	10.45.152.202 – 10.45.152.203	10.45.152.203
103	10.45.152.204/31	10.45.152.204 – 10.45.152.205	10.45.152.205
104	10.45.152.206/31	10.45.152.206 – 10.45.152.207	10.45.152.207
105	10.45.152.208/31	10.45.152.208 – 10.45.152.209	10.45.152.209
106	10.45.152.210/31	10.45.152.210 – 10.45.152.211	10.45.152.211
107	10.45.152.212/31	10.45.152.212 – 10.45.152.213	10.45.152.213
108	10.45.152.214/31	10.45.152.214 – 10.45.152.215	10.45.152.215
109	10.45.152.216/31	10.45.152.216 – 10.45.152.217	10.45.152.217
110	10.45.152.218/31	10.45.152.218 – 10.45.152.219	10.45.152.219
111	10.45.152.220/31	10.45.152.220 – 10.45.152.221	10.45.152.221
112	10.45.152.222/31	10.45.152.222 – 10.45.152.223	10.45.152.223
113	10.45.152.224/31	10.45.152.224 – 10.45.152.225	10.45.152.225
114	10.45.152.226/31	10.45.152.226 – 10.45.152.227	10.45.152.227
115	10.45.152.228/31	10.45.152.228 – 10.45.152.229	10.45.152.229
116	10.45.152.230/31	10.45.152.230 – 10.45.152.231	10.45.152.231
117	10.45.152.232/31	10.45.152.232 – 10.45.152.233	10.45.152.233
118	10.45.152.234/31	10.45.152.234 – 10.45.152.235	10.45.152.235
119	10.45.152.236/31	10.45.152.236 – 10.45.152.237	10.45.152.237
120	10.45.152.238/31	10.45.152.238 – 10.45.152.239	10.45.152.239
121	10.45.152.240/31	10.45.152.240 – 10.45.152.241	10.45.152.241
122	10.45.152.242/31	10.45.152.242 – 10.45.152.243	10.45.152.243
123	10.45.152.244/31	10.45.152.244 – 10.45.152.245	10.45.152.245
124	10.45.152.246/31	10.45.152.246 – 10.45.152.247	10.45.152.247
125	10.45.152.248/31	10.45.152.248 – 10.45.152.249	10.45.152.249
126	10.45.152.250/31	10.45.152.250 – 10.45.152.251	10.45.152.251
127	10.45.152.252/31	10.45.152.252 – 10.45.152.253	10.45.152.253
128	10.45.152.254/31	10.45.152.254 – 10.45.152.255	10.45.152.255

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