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)10.2.223.0/24

network10.2.223.0/24

broadcast10.2.223.255

first host10.2.223.1

last host10.2.223.254

subnet mask255.255.255.0

wildcard0.0.0.255

addresses256

usable hosts254

classA

ipcalc 10.2.223.0/24

address00001010.00000010.11011111.00000000

subnet mask11111111.11111111.11111111.00000000

network00001010.00000010.11011111.00000000

broadcast00001010.00000010.11011111.11111111

green = network part, grey = host part

hex0x0a02df00

decimal167960320

reverse dns0.223.2.10.in-addr.arpa

ipv4-mapped::ffff:a02:df00

/24 split into /32 · 256 subnets

close ×

#	network	host range	broadcast
1	10.2.223.0/32	10.2.223.0 – 10.2.223.0	10.2.223.0
2	10.2.223.1/32	10.2.223.1 – 10.2.223.1	10.2.223.1
3	10.2.223.2/32	10.2.223.2 – 10.2.223.2	10.2.223.2
4	10.2.223.3/32	10.2.223.3 – 10.2.223.3	10.2.223.3
5	10.2.223.4/32	10.2.223.4 – 10.2.223.4	10.2.223.4
6	10.2.223.5/32	10.2.223.5 – 10.2.223.5	10.2.223.5
7	10.2.223.6/32	10.2.223.6 – 10.2.223.6	10.2.223.6
8	10.2.223.7/32	10.2.223.7 – 10.2.223.7	10.2.223.7
9	10.2.223.8/32	10.2.223.8 – 10.2.223.8	10.2.223.8
10	10.2.223.9/32	10.2.223.9 – 10.2.223.9	10.2.223.9
11	10.2.223.10/32	10.2.223.10 – 10.2.223.10	10.2.223.10
12	10.2.223.11/32	10.2.223.11 – 10.2.223.11	10.2.223.11
13	10.2.223.12/32	10.2.223.12 – 10.2.223.12	10.2.223.12
14	10.2.223.13/32	10.2.223.13 – 10.2.223.13	10.2.223.13
15	10.2.223.14/32	10.2.223.14 – 10.2.223.14	10.2.223.14
16	10.2.223.15/32	10.2.223.15 – 10.2.223.15	10.2.223.15
17	10.2.223.16/32	10.2.223.16 – 10.2.223.16	10.2.223.16
18	10.2.223.17/32	10.2.223.17 – 10.2.223.17	10.2.223.17
19	10.2.223.18/32	10.2.223.18 – 10.2.223.18	10.2.223.18
20	10.2.223.19/32	10.2.223.19 – 10.2.223.19	10.2.223.19
21	10.2.223.20/32	10.2.223.20 – 10.2.223.20	10.2.223.20
22	10.2.223.21/32	10.2.223.21 – 10.2.223.21	10.2.223.21
23	10.2.223.22/32	10.2.223.22 – 10.2.223.22	10.2.223.22
24	10.2.223.23/32	10.2.223.23 – 10.2.223.23	10.2.223.23
25	10.2.223.24/32	10.2.223.24 – 10.2.223.24	10.2.223.24
26	10.2.223.25/32	10.2.223.25 – 10.2.223.25	10.2.223.25
27	10.2.223.26/32	10.2.223.26 – 10.2.223.26	10.2.223.26
28	10.2.223.27/32	10.2.223.27 – 10.2.223.27	10.2.223.27
29	10.2.223.28/32	10.2.223.28 – 10.2.223.28	10.2.223.28
30	10.2.223.29/32	10.2.223.29 – 10.2.223.29	10.2.223.29
31	10.2.223.30/32	10.2.223.30 – 10.2.223.30	10.2.223.30
32	10.2.223.31/32	10.2.223.31 – 10.2.223.31	10.2.223.31
33	10.2.223.32/32	10.2.223.32 – 10.2.223.32	10.2.223.32
34	10.2.223.33/32	10.2.223.33 – 10.2.223.33	10.2.223.33
35	10.2.223.34/32	10.2.223.34 – 10.2.223.34	10.2.223.34
36	10.2.223.35/32	10.2.223.35 – 10.2.223.35	10.2.223.35
37	10.2.223.36/32	10.2.223.36 – 10.2.223.36	10.2.223.36
38	10.2.223.37/32	10.2.223.37 – 10.2.223.37	10.2.223.37
39	10.2.223.38/32	10.2.223.38 – 10.2.223.38	10.2.223.38
40	10.2.223.39/32	10.2.223.39 – 10.2.223.39	10.2.223.39
41	10.2.223.40/32	10.2.223.40 – 10.2.223.40	10.2.223.40
42	10.2.223.41/32	10.2.223.41 – 10.2.223.41	10.2.223.41
43	10.2.223.42/32	10.2.223.42 – 10.2.223.42	10.2.223.42
44	10.2.223.43/32	10.2.223.43 – 10.2.223.43	10.2.223.43
45	10.2.223.44/32	10.2.223.44 – 10.2.223.44	10.2.223.44
46	10.2.223.45/32	10.2.223.45 – 10.2.223.45	10.2.223.45
47	10.2.223.46/32	10.2.223.46 – 10.2.223.46	10.2.223.46
48	10.2.223.47/32	10.2.223.47 – 10.2.223.47	10.2.223.47
49	10.2.223.48/32	10.2.223.48 – 10.2.223.48	10.2.223.48
50	10.2.223.49/32	10.2.223.49 – 10.2.223.49	10.2.223.49
51	10.2.223.50/32	10.2.223.50 – 10.2.223.50	10.2.223.50
52	10.2.223.51/32	10.2.223.51 – 10.2.223.51	10.2.223.51
53	10.2.223.52/32	10.2.223.52 – 10.2.223.52	10.2.223.52
54	10.2.223.53/32	10.2.223.53 – 10.2.223.53	10.2.223.53
55	10.2.223.54/32	10.2.223.54 – 10.2.223.54	10.2.223.54
56	10.2.223.55/32	10.2.223.55 – 10.2.223.55	10.2.223.55
57	10.2.223.56/32	10.2.223.56 – 10.2.223.56	10.2.223.56
58	10.2.223.57/32	10.2.223.57 – 10.2.223.57	10.2.223.57
59	10.2.223.58/32	10.2.223.58 – 10.2.223.58	10.2.223.58
60	10.2.223.59/32	10.2.223.59 – 10.2.223.59	10.2.223.59
61	10.2.223.60/32	10.2.223.60 – 10.2.223.60	10.2.223.60
62	10.2.223.61/32	10.2.223.61 – 10.2.223.61	10.2.223.61
63	10.2.223.62/32	10.2.223.62 – 10.2.223.62	10.2.223.62
64	10.2.223.63/32	10.2.223.63 – 10.2.223.63	10.2.223.63
65	10.2.223.64/32	10.2.223.64 – 10.2.223.64	10.2.223.64
66	10.2.223.65/32	10.2.223.65 – 10.2.223.65	10.2.223.65
67	10.2.223.66/32	10.2.223.66 – 10.2.223.66	10.2.223.66
68	10.2.223.67/32	10.2.223.67 – 10.2.223.67	10.2.223.67
69	10.2.223.68/32	10.2.223.68 – 10.2.223.68	10.2.223.68
70	10.2.223.69/32	10.2.223.69 – 10.2.223.69	10.2.223.69
71	10.2.223.70/32	10.2.223.70 – 10.2.223.70	10.2.223.70
72	10.2.223.71/32	10.2.223.71 – 10.2.223.71	10.2.223.71
73	10.2.223.72/32	10.2.223.72 – 10.2.223.72	10.2.223.72
74	10.2.223.73/32	10.2.223.73 – 10.2.223.73	10.2.223.73
75	10.2.223.74/32	10.2.223.74 – 10.2.223.74	10.2.223.74
76	10.2.223.75/32	10.2.223.75 – 10.2.223.75	10.2.223.75
77	10.2.223.76/32	10.2.223.76 – 10.2.223.76	10.2.223.76
78	10.2.223.77/32	10.2.223.77 – 10.2.223.77	10.2.223.77
79	10.2.223.78/32	10.2.223.78 – 10.2.223.78	10.2.223.78
80	10.2.223.79/32	10.2.223.79 – 10.2.223.79	10.2.223.79
81	10.2.223.80/32	10.2.223.80 – 10.2.223.80	10.2.223.80
82	10.2.223.81/32	10.2.223.81 – 10.2.223.81	10.2.223.81
83	10.2.223.82/32	10.2.223.82 – 10.2.223.82	10.2.223.82
84	10.2.223.83/32	10.2.223.83 – 10.2.223.83	10.2.223.83
85	10.2.223.84/32	10.2.223.84 – 10.2.223.84	10.2.223.84
86	10.2.223.85/32	10.2.223.85 – 10.2.223.85	10.2.223.85
87	10.2.223.86/32	10.2.223.86 – 10.2.223.86	10.2.223.86
88	10.2.223.87/32	10.2.223.87 – 10.2.223.87	10.2.223.87
89	10.2.223.88/32	10.2.223.88 – 10.2.223.88	10.2.223.88
90	10.2.223.89/32	10.2.223.89 – 10.2.223.89	10.2.223.89
91	10.2.223.90/32	10.2.223.90 – 10.2.223.90	10.2.223.90
92	10.2.223.91/32	10.2.223.91 – 10.2.223.91	10.2.223.91
93	10.2.223.92/32	10.2.223.92 – 10.2.223.92	10.2.223.92
94	10.2.223.93/32	10.2.223.93 – 10.2.223.93	10.2.223.93
95	10.2.223.94/32	10.2.223.94 – 10.2.223.94	10.2.223.94
96	10.2.223.95/32	10.2.223.95 – 10.2.223.95	10.2.223.95
97	10.2.223.96/32	10.2.223.96 – 10.2.223.96	10.2.223.96
98	10.2.223.97/32	10.2.223.97 – 10.2.223.97	10.2.223.97
99	10.2.223.98/32	10.2.223.98 – 10.2.223.98	10.2.223.98
100	10.2.223.99/32	10.2.223.99 – 10.2.223.99	10.2.223.99
101	10.2.223.100/32	10.2.223.100 – 10.2.223.100	10.2.223.100
102	10.2.223.101/32	10.2.223.101 – 10.2.223.101	10.2.223.101
103	10.2.223.102/32	10.2.223.102 – 10.2.223.102	10.2.223.102
104	10.2.223.103/32	10.2.223.103 – 10.2.223.103	10.2.223.103
105	10.2.223.104/32	10.2.223.104 – 10.2.223.104	10.2.223.104
106	10.2.223.105/32	10.2.223.105 – 10.2.223.105	10.2.223.105
107	10.2.223.106/32	10.2.223.106 – 10.2.223.106	10.2.223.106
108	10.2.223.107/32	10.2.223.107 – 10.2.223.107	10.2.223.107
109	10.2.223.108/32	10.2.223.108 – 10.2.223.108	10.2.223.108
110	10.2.223.109/32	10.2.223.109 – 10.2.223.109	10.2.223.109
111	10.2.223.110/32	10.2.223.110 – 10.2.223.110	10.2.223.110
112	10.2.223.111/32	10.2.223.111 – 10.2.223.111	10.2.223.111
113	10.2.223.112/32	10.2.223.112 – 10.2.223.112	10.2.223.112
114	10.2.223.113/32	10.2.223.113 – 10.2.223.113	10.2.223.113
115	10.2.223.114/32	10.2.223.114 – 10.2.223.114	10.2.223.114
116	10.2.223.115/32	10.2.223.115 – 10.2.223.115	10.2.223.115
117	10.2.223.116/32	10.2.223.116 – 10.2.223.116	10.2.223.116
118	10.2.223.117/32	10.2.223.117 – 10.2.223.117	10.2.223.117
119	10.2.223.118/32	10.2.223.118 – 10.2.223.118	10.2.223.118
120	10.2.223.119/32	10.2.223.119 – 10.2.223.119	10.2.223.119
121	10.2.223.120/32	10.2.223.120 – 10.2.223.120	10.2.223.120
122	10.2.223.121/32	10.2.223.121 – 10.2.223.121	10.2.223.121
123	10.2.223.122/32	10.2.223.122 – 10.2.223.122	10.2.223.122
124	10.2.223.123/32	10.2.223.123 – 10.2.223.123	10.2.223.123
125	10.2.223.124/32	10.2.223.124 – 10.2.223.124	10.2.223.124
126	10.2.223.125/32	10.2.223.125 – 10.2.223.125	10.2.223.125
127	10.2.223.126/32	10.2.223.126 – 10.2.223.126	10.2.223.126
128	10.2.223.127/32	10.2.223.127 – 10.2.223.127	10.2.223.127
129	10.2.223.128/32	10.2.223.128 – 10.2.223.128	10.2.223.128
130	10.2.223.129/32	10.2.223.129 – 10.2.223.129	10.2.223.129
131	10.2.223.130/32	10.2.223.130 – 10.2.223.130	10.2.223.130
132	10.2.223.131/32	10.2.223.131 – 10.2.223.131	10.2.223.131
133	10.2.223.132/32	10.2.223.132 – 10.2.223.132	10.2.223.132
134	10.2.223.133/32	10.2.223.133 – 10.2.223.133	10.2.223.133
135	10.2.223.134/32	10.2.223.134 – 10.2.223.134	10.2.223.134
136	10.2.223.135/32	10.2.223.135 – 10.2.223.135	10.2.223.135
137	10.2.223.136/32	10.2.223.136 – 10.2.223.136	10.2.223.136
138	10.2.223.137/32	10.2.223.137 – 10.2.223.137	10.2.223.137
139	10.2.223.138/32	10.2.223.138 – 10.2.223.138	10.2.223.138
140	10.2.223.139/32	10.2.223.139 – 10.2.223.139	10.2.223.139
141	10.2.223.140/32	10.2.223.140 – 10.2.223.140	10.2.223.140
142	10.2.223.141/32	10.2.223.141 – 10.2.223.141	10.2.223.141
143	10.2.223.142/32	10.2.223.142 – 10.2.223.142	10.2.223.142
144	10.2.223.143/32	10.2.223.143 – 10.2.223.143	10.2.223.143
145	10.2.223.144/32	10.2.223.144 – 10.2.223.144	10.2.223.144
146	10.2.223.145/32	10.2.223.145 – 10.2.223.145	10.2.223.145
147	10.2.223.146/32	10.2.223.146 – 10.2.223.146	10.2.223.146
148	10.2.223.147/32	10.2.223.147 – 10.2.223.147	10.2.223.147
149	10.2.223.148/32	10.2.223.148 – 10.2.223.148	10.2.223.148
150	10.2.223.149/32	10.2.223.149 – 10.2.223.149	10.2.223.149
151	10.2.223.150/32	10.2.223.150 – 10.2.223.150	10.2.223.150
152	10.2.223.151/32	10.2.223.151 – 10.2.223.151	10.2.223.151
153	10.2.223.152/32	10.2.223.152 – 10.2.223.152	10.2.223.152
154	10.2.223.153/32	10.2.223.153 – 10.2.223.153	10.2.223.153
155	10.2.223.154/32	10.2.223.154 – 10.2.223.154	10.2.223.154
156	10.2.223.155/32	10.2.223.155 – 10.2.223.155	10.2.223.155
157	10.2.223.156/32	10.2.223.156 – 10.2.223.156	10.2.223.156
158	10.2.223.157/32	10.2.223.157 – 10.2.223.157	10.2.223.157
159	10.2.223.158/32	10.2.223.158 – 10.2.223.158	10.2.223.158
160	10.2.223.159/32	10.2.223.159 – 10.2.223.159	10.2.223.159
161	10.2.223.160/32	10.2.223.160 – 10.2.223.160	10.2.223.160
162	10.2.223.161/32	10.2.223.161 – 10.2.223.161	10.2.223.161
163	10.2.223.162/32	10.2.223.162 – 10.2.223.162	10.2.223.162
164	10.2.223.163/32	10.2.223.163 – 10.2.223.163	10.2.223.163
165	10.2.223.164/32	10.2.223.164 – 10.2.223.164	10.2.223.164
166	10.2.223.165/32	10.2.223.165 – 10.2.223.165	10.2.223.165
167	10.2.223.166/32	10.2.223.166 – 10.2.223.166	10.2.223.166
168	10.2.223.167/32	10.2.223.167 – 10.2.223.167	10.2.223.167
169	10.2.223.168/32	10.2.223.168 – 10.2.223.168	10.2.223.168
170	10.2.223.169/32	10.2.223.169 – 10.2.223.169	10.2.223.169
171	10.2.223.170/32	10.2.223.170 – 10.2.223.170	10.2.223.170
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210	10.2.223.209/32	10.2.223.209 – 10.2.223.209	10.2.223.209
211	10.2.223.210/32	10.2.223.210 – 10.2.223.210	10.2.223.210
212	10.2.223.211/32	10.2.223.211 – 10.2.223.211	10.2.223.211
213	10.2.223.212/32	10.2.223.212 – 10.2.223.212	10.2.223.212
214	10.2.223.213/32	10.2.223.213 – 10.2.223.213	10.2.223.213
215	10.2.223.214/32	10.2.223.214 – 10.2.223.214	10.2.223.214
216	10.2.223.215/32	10.2.223.215 – 10.2.223.215	10.2.223.215
217	10.2.223.216/32	10.2.223.216 – 10.2.223.216	10.2.223.216
218	10.2.223.217/32	10.2.223.217 – 10.2.223.217	10.2.223.217
219	10.2.223.218/32	10.2.223.218 – 10.2.223.218	10.2.223.218
220	10.2.223.219/32	10.2.223.219 – 10.2.223.219	10.2.223.219
221	10.2.223.220/32	10.2.223.220 – 10.2.223.220	10.2.223.220
222	10.2.223.221/32	10.2.223.221 – 10.2.223.221	10.2.223.221
223	10.2.223.222/32	10.2.223.222 – 10.2.223.222	10.2.223.222
224	10.2.223.223/32	10.2.223.223 – 10.2.223.223	10.2.223.223
225	10.2.223.224/32	10.2.223.224 – 10.2.223.224	10.2.223.224
226	10.2.223.225/32	10.2.223.225 – 10.2.223.225	10.2.223.225
227	10.2.223.226/32	10.2.223.226 – 10.2.223.226	10.2.223.226
228	10.2.223.227/32	10.2.223.227 – 10.2.223.227	10.2.223.227
229	10.2.223.228/32	10.2.223.228 – 10.2.223.228	10.2.223.228
230	10.2.223.229/32	10.2.223.229 – 10.2.223.229	10.2.223.229
231	10.2.223.230/32	10.2.223.230 – 10.2.223.230	10.2.223.230
232	10.2.223.231/32	10.2.223.231 – 10.2.223.231	10.2.223.231
233	10.2.223.232/32	10.2.223.232 – 10.2.223.232	10.2.223.232
234	10.2.223.233/32	10.2.223.233 – 10.2.223.233	10.2.223.233
235	10.2.223.234/32	10.2.223.234 – 10.2.223.234	10.2.223.234
236	10.2.223.235/32	10.2.223.235 – 10.2.223.235	10.2.223.235
237	10.2.223.236/32	10.2.223.236 – 10.2.223.236	10.2.223.236
238	10.2.223.237/32	10.2.223.237 – 10.2.223.237	10.2.223.237
239	10.2.223.238/32	10.2.223.238 – 10.2.223.238	10.2.223.238
240	10.2.223.239/32	10.2.223.239 – 10.2.223.239	10.2.223.239
241	10.2.223.240/32	10.2.223.240 – 10.2.223.240	10.2.223.240
242	10.2.223.241/32	10.2.223.241 – 10.2.223.241	10.2.223.241
243	10.2.223.242/32	10.2.223.242 – 10.2.223.242	10.2.223.242
244	10.2.223.243/32	10.2.223.243 – 10.2.223.243	10.2.223.243
245	10.2.223.244/32	10.2.223.244 – 10.2.223.244	10.2.223.244
246	10.2.223.245/32	10.2.223.245 – 10.2.223.245	10.2.223.245
247	10.2.223.246/32	10.2.223.246 – 10.2.223.246	10.2.223.246
248	10.2.223.247/32	10.2.223.247 – 10.2.223.247	10.2.223.247
249	10.2.223.248/32	10.2.223.248 – 10.2.223.248	10.2.223.248
250	10.2.223.249/32	10.2.223.249 – 10.2.223.249	10.2.223.249
251	10.2.223.250/32	10.2.223.250 – 10.2.223.250	10.2.223.250
252	10.2.223.251/32	10.2.223.251 – 10.2.223.251	10.2.223.251
253	10.2.223.252/32	10.2.223.252 – 10.2.223.252	10.2.223.252
254	10.2.223.253/32	10.2.223.253 – 10.2.223.253	10.2.223.253
255	10.2.223.254/32	10.2.223.254 – 10.2.223.254	10.2.223.254
256	10.2.223.255/32	10.2.223.255 – 10.2.223.255	10.2.223.255

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 →