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)10.2.110.0/23

network10.2.110.0/23

broadcast10.2.111.255

first host10.2.110.1

last host10.2.111.254

subnet mask255.255.254.0

wildcard0.0.1.255

addresses512

usable hosts510

classA

ipcalc 10.2.110.0/23

address00001010.00000010.01101110.00000000

subnet mask11111111.11111111.11111110.00000000

network00001010.00000010.01101110.00000000

broadcast00001010.00000010.01101111.11111111

green = network part, grey = host part

hex0x0a026e00

decimal167931392

reverse dns0.110.2.10.in-addr.arpa

ipv4-mapped::ffff:a02:6e00

/23 split into /32 · 512 subnets

close ×

#	network	host range	broadcast
1	10.2.110.0/32	10.2.110.0 – 10.2.110.0	10.2.110.0
2	10.2.110.1/32	10.2.110.1 – 10.2.110.1	10.2.110.1
3	10.2.110.2/32	10.2.110.2 – 10.2.110.2	10.2.110.2
4	10.2.110.3/32	10.2.110.3 – 10.2.110.3	10.2.110.3
5	10.2.110.4/32	10.2.110.4 – 10.2.110.4	10.2.110.4
6	10.2.110.5/32	10.2.110.5 – 10.2.110.5	10.2.110.5
7	10.2.110.6/32	10.2.110.6 – 10.2.110.6	10.2.110.6
8	10.2.110.7/32	10.2.110.7 – 10.2.110.7	10.2.110.7
9	10.2.110.8/32	10.2.110.8 – 10.2.110.8	10.2.110.8
10	10.2.110.9/32	10.2.110.9 – 10.2.110.9	10.2.110.9
11	10.2.110.10/32	10.2.110.10 – 10.2.110.10	10.2.110.10
12	10.2.110.11/32	10.2.110.11 – 10.2.110.11	10.2.110.11
13	10.2.110.12/32	10.2.110.12 – 10.2.110.12	10.2.110.12
14	10.2.110.13/32	10.2.110.13 – 10.2.110.13	10.2.110.13
15	10.2.110.14/32	10.2.110.14 – 10.2.110.14	10.2.110.14
16	10.2.110.15/32	10.2.110.15 – 10.2.110.15	10.2.110.15
17	10.2.110.16/32	10.2.110.16 – 10.2.110.16	10.2.110.16
18	10.2.110.17/32	10.2.110.17 – 10.2.110.17	10.2.110.17
19	10.2.110.18/32	10.2.110.18 – 10.2.110.18	10.2.110.18
20	10.2.110.19/32	10.2.110.19 – 10.2.110.19	10.2.110.19
21	10.2.110.20/32	10.2.110.20 – 10.2.110.20	10.2.110.20
22	10.2.110.21/32	10.2.110.21 – 10.2.110.21	10.2.110.21
23	10.2.110.22/32	10.2.110.22 – 10.2.110.22	10.2.110.22
24	10.2.110.23/32	10.2.110.23 – 10.2.110.23	10.2.110.23
25	10.2.110.24/32	10.2.110.24 – 10.2.110.24	10.2.110.24
26	10.2.110.25/32	10.2.110.25 – 10.2.110.25	10.2.110.25
27	10.2.110.26/32	10.2.110.26 – 10.2.110.26	10.2.110.26
28	10.2.110.27/32	10.2.110.27 – 10.2.110.27	10.2.110.27
29	10.2.110.28/32	10.2.110.28 – 10.2.110.28	10.2.110.28
30	10.2.110.29/32	10.2.110.29 – 10.2.110.29	10.2.110.29
31	10.2.110.30/32	10.2.110.30 – 10.2.110.30	10.2.110.30
32	10.2.110.31/32	10.2.110.31 – 10.2.110.31	10.2.110.31
33	10.2.110.32/32	10.2.110.32 – 10.2.110.32	10.2.110.32
34	10.2.110.33/32	10.2.110.33 – 10.2.110.33	10.2.110.33
35	10.2.110.34/32	10.2.110.34 – 10.2.110.34	10.2.110.34
36	10.2.110.35/32	10.2.110.35 – 10.2.110.35	10.2.110.35
37	10.2.110.36/32	10.2.110.36 – 10.2.110.36	10.2.110.36
38	10.2.110.37/32	10.2.110.37 – 10.2.110.37	10.2.110.37
39	10.2.110.38/32	10.2.110.38 – 10.2.110.38	10.2.110.38
40	10.2.110.39/32	10.2.110.39 – 10.2.110.39	10.2.110.39
41	10.2.110.40/32	10.2.110.40 – 10.2.110.40	10.2.110.40
42	10.2.110.41/32	10.2.110.41 – 10.2.110.41	10.2.110.41
43	10.2.110.42/32	10.2.110.42 – 10.2.110.42	10.2.110.42
44	10.2.110.43/32	10.2.110.43 – 10.2.110.43	10.2.110.43
45	10.2.110.44/32	10.2.110.44 – 10.2.110.44	10.2.110.44
46	10.2.110.45/32	10.2.110.45 – 10.2.110.45	10.2.110.45
47	10.2.110.46/32	10.2.110.46 – 10.2.110.46	10.2.110.46
48	10.2.110.47/32	10.2.110.47 – 10.2.110.47	10.2.110.47
49	10.2.110.48/32	10.2.110.48 – 10.2.110.48	10.2.110.48
50	10.2.110.49/32	10.2.110.49 – 10.2.110.49	10.2.110.49
51	10.2.110.50/32	10.2.110.50 – 10.2.110.50	10.2.110.50
52	10.2.110.51/32	10.2.110.51 – 10.2.110.51	10.2.110.51
53	10.2.110.52/32	10.2.110.52 – 10.2.110.52	10.2.110.52
54	10.2.110.53/32	10.2.110.53 – 10.2.110.53	10.2.110.53
55	10.2.110.54/32	10.2.110.54 – 10.2.110.54	10.2.110.54
56	10.2.110.55/32	10.2.110.55 – 10.2.110.55	10.2.110.55
57	10.2.110.56/32	10.2.110.56 – 10.2.110.56	10.2.110.56
58	10.2.110.57/32	10.2.110.57 – 10.2.110.57	10.2.110.57
59	10.2.110.58/32	10.2.110.58 – 10.2.110.58	10.2.110.58
60	10.2.110.59/32	10.2.110.59 – 10.2.110.59	10.2.110.59
61	10.2.110.60/32	10.2.110.60 – 10.2.110.60	10.2.110.60
62	10.2.110.61/32	10.2.110.61 – 10.2.110.61	10.2.110.61
63	10.2.110.62/32	10.2.110.62 – 10.2.110.62	10.2.110.62
64	10.2.110.63/32	10.2.110.63 – 10.2.110.63	10.2.110.63
65	10.2.110.64/32	10.2.110.64 – 10.2.110.64	10.2.110.64
66	10.2.110.65/32	10.2.110.65 – 10.2.110.65	10.2.110.65
67	10.2.110.66/32	10.2.110.66 – 10.2.110.66	10.2.110.66
68	10.2.110.67/32	10.2.110.67 – 10.2.110.67	10.2.110.67
69	10.2.110.68/32	10.2.110.68 – 10.2.110.68	10.2.110.68
70	10.2.110.69/32	10.2.110.69 – 10.2.110.69	10.2.110.69
71	10.2.110.70/32	10.2.110.70 – 10.2.110.70	10.2.110.70
72	10.2.110.71/32	10.2.110.71 – 10.2.110.71	10.2.110.71
73	10.2.110.72/32	10.2.110.72 – 10.2.110.72	10.2.110.72
74	10.2.110.73/32	10.2.110.73 – 10.2.110.73	10.2.110.73
75	10.2.110.74/32	10.2.110.74 – 10.2.110.74	10.2.110.74
76	10.2.110.75/32	10.2.110.75 – 10.2.110.75	10.2.110.75
77	10.2.110.76/32	10.2.110.76 – 10.2.110.76	10.2.110.76
78	10.2.110.77/32	10.2.110.77 – 10.2.110.77	10.2.110.77
79	10.2.110.78/32	10.2.110.78 – 10.2.110.78	10.2.110.78
80	10.2.110.79/32	10.2.110.79 – 10.2.110.79	10.2.110.79
81	10.2.110.80/32	10.2.110.80 – 10.2.110.80	10.2.110.80
82	10.2.110.81/32	10.2.110.81 – 10.2.110.81	10.2.110.81
83	10.2.110.82/32	10.2.110.82 – 10.2.110.82	10.2.110.82
84	10.2.110.83/32	10.2.110.83 – 10.2.110.83	10.2.110.83
85	10.2.110.84/32	10.2.110.84 – 10.2.110.84	10.2.110.84
86	10.2.110.85/32	10.2.110.85 – 10.2.110.85	10.2.110.85
87	10.2.110.86/32	10.2.110.86 – 10.2.110.86	10.2.110.86
88	10.2.110.87/32	10.2.110.87 – 10.2.110.87	10.2.110.87
89	10.2.110.88/32	10.2.110.88 – 10.2.110.88	10.2.110.88
90	10.2.110.89/32	10.2.110.89 – 10.2.110.89	10.2.110.89
91	10.2.110.90/32	10.2.110.90 – 10.2.110.90	10.2.110.90
92	10.2.110.91/32	10.2.110.91 – 10.2.110.91	10.2.110.91
93	10.2.110.92/32	10.2.110.92 – 10.2.110.92	10.2.110.92
94	10.2.110.93/32	10.2.110.93 – 10.2.110.93	10.2.110.93
95	10.2.110.94/32	10.2.110.94 – 10.2.110.94	10.2.110.94
96	10.2.110.95/32	10.2.110.95 – 10.2.110.95	10.2.110.95
97	10.2.110.96/32	10.2.110.96 – 10.2.110.96	10.2.110.96
98	10.2.110.97/32	10.2.110.97 – 10.2.110.97	10.2.110.97
99	10.2.110.98/32	10.2.110.98 – 10.2.110.98	10.2.110.98
100	10.2.110.99/32	10.2.110.99 – 10.2.110.99	10.2.110.99
101	10.2.110.100/32	10.2.110.100 – 10.2.110.100	10.2.110.100
102	10.2.110.101/32	10.2.110.101 – 10.2.110.101	10.2.110.101
103	10.2.110.102/32	10.2.110.102 – 10.2.110.102	10.2.110.102
104	10.2.110.103/32	10.2.110.103 – 10.2.110.103	10.2.110.103
105	10.2.110.104/32	10.2.110.104 – 10.2.110.104	10.2.110.104
106	10.2.110.105/32	10.2.110.105 – 10.2.110.105	10.2.110.105
107	10.2.110.106/32	10.2.110.106 – 10.2.110.106	10.2.110.106
108	10.2.110.107/32	10.2.110.107 – 10.2.110.107	10.2.110.107
109	10.2.110.108/32	10.2.110.108 – 10.2.110.108	10.2.110.108
110	10.2.110.109/32	10.2.110.109 – 10.2.110.109	10.2.110.109
111	10.2.110.110/32	10.2.110.110 – 10.2.110.110	10.2.110.110
112	10.2.110.111/32	10.2.110.111 – 10.2.110.111	10.2.110.111
113	10.2.110.112/32	10.2.110.112 – 10.2.110.112	10.2.110.112
114	10.2.110.113/32	10.2.110.113 – 10.2.110.113	10.2.110.113
115	10.2.110.114/32	10.2.110.114 – 10.2.110.114	10.2.110.114
116	10.2.110.115/32	10.2.110.115 – 10.2.110.115	10.2.110.115
117	10.2.110.116/32	10.2.110.116 – 10.2.110.116	10.2.110.116
118	10.2.110.117/32	10.2.110.117 – 10.2.110.117	10.2.110.117
119	10.2.110.118/32	10.2.110.118 – 10.2.110.118	10.2.110.118
120	10.2.110.119/32	10.2.110.119 – 10.2.110.119	10.2.110.119
121	10.2.110.120/32	10.2.110.120 – 10.2.110.120	10.2.110.120
122	10.2.110.121/32	10.2.110.121 – 10.2.110.121	10.2.110.121
123	10.2.110.122/32	10.2.110.122 – 10.2.110.122	10.2.110.122
124	10.2.110.123/32	10.2.110.123 – 10.2.110.123	10.2.110.123
125	10.2.110.124/32	10.2.110.124 – 10.2.110.124	10.2.110.124
126	10.2.110.125/32	10.2.110.125 – 10.2.110.125	10.2.110.125
127	10.2.110.126/32	10.2.110.126 – 10.2.110.126	10.2.110.126
128	10.2.110.127/32	10.2.110.127 – 10.2.110.127	10.2.110.127
129	10.2.110.128/32	10.2.110.128 – 10.2.110.128	10.2.110.128
130	10.2.110.129/32	10.2.110.129 – 10.2.110.129	10.2.110.129
131	10.2.110.130/32	10.2.110.130 – 10.2.110.130	10.2.110.130
132	10.2.110.131/32	10.2.110.131 – 10.2.110.131	10.2.110.131
133	10.2.110.132/32	10.2.110.132 – 10.2.110.132	10.2.110.132
134	10.2.110.133/32	10.2.110.133 – 10.2.110.133	10.2.110.133
135	10.2.110.134/32	10.2.110.134 – 10.2.110.134	10.2.110.134
136	10.2.110.135/32	10.2.110.135 – 10.2.110.135	10.2.110.135
137	10.2.110.136/32	10.2.110.136 – 10.2.110.136	10.2.110.136
138	10.2.110.137/32	10.2.110.137 – 10.2.110.137	10.2.110.137
139	10.2.110.138/32	10.2.110.138 – 10.2.110.138	10.2.110.138
140	10.2.110.139/32	10.2.110.139 – 10.2.110.139	10.2.110.139
141	10.2.110.140/32	10.2.110.140 – 10.2.110.140	10.2.110.140
142	10.2.110.141/32	10.2.110.141 – 10.2.110.141	10.2.110.141
143	10.2.110.142/32	10.2.110.142 – 10.2.110.142	10.2.110.142
144	10.2.110.143/32	10.2.110.143 – 10.2.110.143	10.2.110.143
145	10.2.110.144/32	10.2.110.144 – 10.2.110.144	10.2.110.144
146	10.2.110.145/32	10.2.110.145 – 10.2.110.145	10.2.110.145
147	10.2.110.146/32	10.2.110.146 – 10.2.110.146	10.2.110.146
148	10.2.110.147/32	10.2.110.147 – 10.2.110.147	10.2.110.147
149	10.2.110.148/32	10.2.110.148 – 10.2.110.148	10.2.110.148
150	10.2.110.149/32	10.2.110.149 – 10.2.110.149	10.2.110.149
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156	10.2.110.155/32	10.2.110.155 – 10.2.110.155	10.2.110.155
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210	10.2.110.209/32	10.2.110.209 – 10.2.110.209	10.2.110.209
211	10.2.110.210/32	10.2.110.210 – 10.2.110.210	10.2.110.210
212	10.2.110.211/32	10.2.110.211 – 10.2.110.211	10.2.110.211
213	10.2.110.212/32	10.2.110.212 – 10.2.110.212	10.2.110.212
214	10.2.110.213/32	10.2.110.213 – 10.2.110.213	10.2.110.213
215	10.2.110.214/32	10.2.110.214 – 10.2.110.214	10.2.110.214
216	10.2.110.215/32	10.2.110.215 – 10.2.110.215	10.2.110.215
217	10.2.110.216/32	10.2.110.216 – 10.2.110.216	10.2.110.216
218	10.2.110.217/32	10.2.110.217 – 10.2.110.217	10.2.110.217
219	10.2.110.218/32	10.2.110.218 – 10.2.110.218	10.2.110.218
220	10.2.110.219/32	10.2.110.219 – 10.2.110.219	10.2.110.219
221	10.2.110.220/32	10.2.110.220 – 10.2.110.220	10.2.110.220
222	10.2.110.221/32	10.2.110.221 – 10.2.110.221	10.2.110.221
223	10.2.110.222/32	10.2.110.222 – 10.2.110.222	10.2.110.222
224	10.2.110.223/32	10.2.110.223 – 10.2.110.223	10.2.110.223
225	10.2.110.224/32	10.2.110.224 – 10.2.110.224	10.2.110.224
226	10.2.110.225/32	10.2.110.225 – 10.2.110.225	10.2.110.225
227	10.2.110.226/32	10.2.110.226 – 10.2.110.226	10.2.110.226
228	10.2.110.227/32	10.2.110.227 – 10.2.110.227	10.2.110.227
229	10.2.110.228/32	10.2.110.228 – 10.2.110.228	10.2.110.228
230	10.2.110.229/32	10.2.110.229 – 10.2.110.229	10.2.110.229
231	10.2.110.230/32	10.2.110.230 – 10.2.110.230	10.2.110.230
232	10.2.110.231/32	10.2.110.231 – 10.2.110.231	10.2.110.231
233	10.2.110.232/32	10.2.110.232 – 10.2.110.232	10.2.110.232
234	10.2.110.233/32	10.2.110.233 – 10.2.110.233	10.2.110.233
235	10.2.110.234/32	10.2.110.234 – 10.2.110.234	10.2.110.234
236	10.2.110.235/32	10.2.110.235 – 10.2.110.235	10.2.110.235
237	10.2.110.236/32	10.2.110.236 – 10.2.110.236	10.2.110.236
238	10.2.110.237/32	10.2.110.237 – 10.2.110.237	10.2.110.237
239	10.2.110.238/32	10.2.110.238 – 10.2.110.238	10.2.110.238
240	10.2.110.239/32	10.2.110.239 – 10.2.110.239	10.2.110.239
241	10.2.110.240/32	10.2.110.240 – 10.2.110.240	10.2.110.240
242	10.2.110.241/32	10.2.110.241 – 10.2.110.241	10.2.110.241
243	10.2.110.242/32	10.2.110.242 – 10.2.110.242	10.2.110.242
244	10.2.110.243/32	10.2.110.243 – 10.2.110.243	10.2.110.243
245	10.2.110.244/32	10.2.110.244 – 10.2.110.244	10.2.110.244
246	10.2.110.245/32	10.2.110.245 – 10.2.110.245	10.2.110.245
247	10.2.110.246/32	10.2.110.246 – 10.2.110.246	10.2.110.246
248	10.2.110.247/32	10.2.110.247 – 10.2.110.247	10.2.110.247
249	10.2.110.248/32	10.2.110.248 – 10.2.110.248	10.2.110.248
250	10.2.110.249/32	10.2.110.249 – 10.2.110.249	10.2.110.249
251	10.2.110.250/32	10.2.110.250 – 10.2.110.250	10.2.110.250
252	10.2.110.251/32	10.2.110.251 – 10.2.110.251	10.2.110.251
253	10.2.110.252/32	10.2.110.252 – 10.2.110.252	10.2.110.252
254	10.2.110.253/32	10.2.110.253 – 10.2.110.253	10.2.110.253
255	10.2.110.254/32	10.2.110.254 – 10.2.110.254	10.2.110.254
256	10.2.110.255/32	10.2.110.255 – 10.2.110.255	10.2.110.255

showing 256 of 512

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 →