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)10.3.54.0/24

network10.3.54.0/24

broadcast10.3.54.255

first host10.3.54.1

last host10.3.54.254

subnet mask255.255.255.0

wildcard0.0.0.255

addresses256

usable hosts254

classA

ipcalc 10.3.54.0/24

address00001010.00000011.00110110.00000000

subnet mask11111111.11111111.11111111.00000000

network00001010.00000011.00110110.00000000

broadcast00001010.00000011.00110110.11111111

green = network part, grey = host part

hex0x0a033600

decimal167982592

reverse dns0.54.3.10.in-addr.arpa

ipv4-mapped::ffff:a03:3600

/24 split into /32 · 256 subnets

close ×

#	network	host range	broadcast
1	10.3.54.0/32	10.3.54.0 – 10.3.54.0	10.3.54.0
2	10.3.54.1/32	10.3.54.1 – 10.3.54.1	10.3.54.1
3	10.3.54.2/32	10.3.54.2 – 10.3.54.2	10.3.54.2
4	10.3.54.3/32	10.3.54.3 – 10.3.54.3	10.3.54.3
5	10.3.54.4/32	10.3.54.4 – 10.3.54.4	10.3.54.4
6	10.3.54.5/32	10.3.54.5 – 10.3.54.5	10.3.54.5
7	10.3.54.6/32	10.3.54.6 – 10.3.54.6	10.3.54.6
8	10.3.54.7/32	10.3.54.7 – 10.3.54.7	10.3.54.7
9	10.3.54.8/32	10.3.54.8 – 10.3.54.8	10.3.54.8
10	10.3.54.9/32	10.3.54.9 – 10.3.54.9	10.3.54.9
11	10.3.54.10/32	10.3.54.10 – 10.3.54.10	10.3.54.10
12	10.3.54.11/32	10.3.54.11 – 10.3.54.11	10.3.54.11
13	10.3.54.12/32	10.3.54.12 – 10.3.54.12	10.3.54.12
14	10.3.54.13/32	10.3.54.13 – 10.3.54.13	10.3.54.13
15	10.3.54.14/32	10.3.54.14 – 10.3.54.14	10.3.54.14
16	10.3.54.15/32	10.3.54.15 – 10.3.54.15	10.3.54.15
17	10.3.54.16/32	10.3.54.16 – 10.3.54.16	10.3.54.16
18	10.3.54.17/32	10.3.54.17 – 10.3.54.17	10.3.54.17
19	10.3.54.18/32	10.3.54.18 – 10.3.54.18	10.3.54.18
20	10.3.54.19/32	10.3.54.19 – 10.3.54.19	10.3.54.19
21	10.3.54.20/32	10.3.54.20 – 10.3.54.20	10.3.54.20
22	10.3.54.21/32	10.3.54.21 – 10.3.54.21	10.3.54.21
23	10.3.54.22/32	10.3.54.22 – 10.3.54.22	10.3.54.22
24	10.3.54.23/32	10.3.54.23 – 10.3.54.23	10.3.54.23
25	10.3.54.24/32	10.3.54.24 – 10.3.54.24	10.3.54.24
26	10.3.54.25/32	10.3.54.25 – 10.3.54.25	10.3.54.25
27	10.3.54.26/32	10.3.54.26 – 10.3.54.26	10.3.54.26
28	10.3.54.27/32	10.3.54.27 – 10.3.54.27	10.3.54.27
29	10.3.54.28/32	10.3.54.28 – 10.3.54.28	10.3.54.28
30	10.3.54.29/32	10.3.54.29 – 10.3.54.29	10.3.54.29
31	10.3.54.30/32	10.3.54.30 – 10.3.54.30	10.3.54.30
32	10.3.54.31/32	10.3.54.31 – 10.3.54.31	10.3.54.31
33	10.3.54.32/32	10.3.54.32 – 10.3.54.32	10.3.54.32
34	10.3.54.33/32	10.3.54.33 – 10.3.54.33	10.3.54.33
35	10.3.54.34/32	10.3.54.34 – 10.3.54.34	10.3.54.34
36	10.3.54.35/32	10.3.54.35 – 10.3.54.35	10.3.54.35
37	10.3.54.36/32	10.3.54.36 – 10.3.54.36	10.3.54.36
38	10.3.54.37/32	10.3.54.37 – 10.3.54.37	10.3.54.37
39	10.3.54.38/32	10.3.54.38 – 10.3.54.38	10.3.54.38
40	10.3.54.39/32	10.3.54.39 – 10.3.54.39	10.3.54.39
41	10.3.54.40/32	10.3.54.40 – 10.3.54.40	10.3.54.40
42	10.3.54.41/32	10.3.54.41 – 10.3.54.41	10.3.54.41
43	10.3.54.42/32	10.3.54.42 – 10.3.54.42	10.3.54.42
44	10.3.54.43/32	10.3.54.43 – 10.3.54.43	10.3.54.43
45	10.3.54.44/32	10.3.54.44 – 10.3.54.44	10.3.54.44
46	10.3.54.45/32	10.3.54.45 – 10.3.54.45	10.3.54.45
47	10.3.54.46/32	10.3.54.46 – 10.3.54.46	10.3.54.46
48	10.3.54.47/32	10.3.54.47 – 10.3.54.47	10.3.54.47
49	10.3.54.48/32	10.3.54.48 – 10.3.54.48	10.3.54.48
50	10.3.54.49/32	10.3.54.49 – 10.3.54.49	10.3.54.49
51	10.3.54.50/32	10.3.54.50 – 10.3.54.50	10.3.54.50
52	10.3.54.51/32	10.3.54.51 – 10.3.54.51	10.3.54.51
53	10.3.54.52/32	10.3.54.52 – 10.3.54.52	10.3.54.52
54	10.3.54.53/32	10.3.54.53 – 10.3.54.53	10.3.54.53
55	10.3.54.54/32	10.3.54.54 – 10.3.54.54	10.3.54.54
56	10.3.54.55/32	10.3.54.55 – 10.3.54.55	10.3.54.55
57	10.3.54.56/32	10.3.54.56 – 10.3.54.56	10.3.54.56
58	10.3.54.57/32	10.3.54.57 – 10.3.54.57	10.3.54.57
59	10.3.54.58/32	10.3.54.58 – 10.3.54.58	10.3.54.58
60	10.3.54.59/32	10.3.54.59 – 10.3.54.59	10.3.54.59
61	10.3.54.60/32	10.3.54.60 – 10.3.54.60	10.3.54.60
62	10.3.54.61/32	10.3.54.61 – 10.3.54.61	10.3.54.61
63	10.3.54.62/32	10.3.54.62 – 10.3.54.62	10.3.54.62
64	10.3.54.63/32	10.3.54.63 – 10.3.54.63	10.3.54.63
65	10.3.54.64/32	10.3.54.64 – 10.3.54.64	10.3.54.64
66	10.3.54.65/32	10.3.54.65 – 10.3.54.65	10.3.54.65
67	10.3.54.66/32	10.3.54.66 – 10.3.54.66	10.3.54.66
68	10.3.54.67/32	10.3.54.67 – 10.3.54.67	10.3.54.67
69	10.3.54.68/32	10.3.54.68 – 10.3.54.68	10.3.54.68
70	10.3.54.69/32	10.3.54.69 – 10.3.54.69	10.3.54.69
71	10.3.54.70/32	10.3.54.70 – 10.3.54.70	10.3.54.70
72	10.3.54.71/32	10.3.54.71 – 10.3.54.71	10.3.54.71
73	10.3.54.72/32	10.3.54.72 – 10.3.54.72	10.3.54.72
74	10.3.54.73/32	10.3.54.73 – 10.3.54.73	10.3.54.73
75	10.3.54.74/32	10.3.54.74 – 10.3.54.74	10.3.54.74
76	10.3.54.75/32	10.3.54.75 – 10.3.54.75	10.3.54.75
77	10.3.54.76/32	10.3.54.76 – 10.3.54.76	10.3.54.76
78	10.3.54.77/32	10.3.54.77 – 10.3.54.77	10.3.54.77
79	10.3.54.78/32	10.3.54.78 – 10.3.54.78	10.3.54.78
80	10.3.54.79/32	10.3.54.79 – 10.3.54.79	10.3.54.79
81	10.3.54.80/32	10.3.54.80 – 10.3.54.80	10.3.54.80
82	10.3.54.81/32	10.3.54.81 – 10.3.54.81	10.3.54.81
83	10.3.54.82/32	10.3.54.82 – 10.3.54.82	10.3.54.82
84	10.3.54.83/32	10.3.54.83 – 10.3.54.83	10.3.54.83
85	10.3.54.84/32	10.3.54.84 – 10.3.54.84	10.3.54.84
86	10.3.54.85/32	10.3.54.85 – 10.3.54.85	10.3.54.85
87	10.3.54.86/32	10.3.54.86 – 10.3.54.86	10.3.54.86
88	10.3.54.87/32	10.3.54.87 – 10.3.54.87	10.3.54.87
89	10.3.54.88/32	10.3.54.88 – 10.3.54.88	10.3.54.88
90	10.3.54.89/32	10.3.54.89 – 10.3.54.89	10.3.54.89
91	10.3.54.90/32	10.3.54.90 – 10.3.54.90	10.3.54.90
92	10.3.54.91/32	10.3.54.91 – 10.3.54.91	10.3.54.91
93	10.3.54.92/32	10.3.54.92 – 10.3.54.92	10.3.54.92
94	10.3.54.93/32	10.3.54.93 – 10.3.54.93	10.3.54.93
95	10.3.54.94/32	10.3.54.94 – 10.3.54.94	10.3.54.94
96	10.3.54.95/32	10.3.54.95 – 10.3.54.95	10.3.54.95
97	10.3.54.96/32	10.3.54.96 – 10.3.54.96	10.3.54.96
98	10.3.54.97/32	10.3.54.97 – 10.3.54.97	10.3.54.97
99	10.3.54.98/32	10.3.54.98 – 10.3.54.98	10.3.54.98
100	10.3.54.99/32	10.3.54.99 – 10.3.54.99	10.3.54.99
101	10.3.54.100/32	10.3.54.100 – 10.3.54.100	10.3.54.100
102	10.3.54.101/32	10.3.54.101 – 10.3.54.101	10.3.54.101
103	10.3.54.102/32	10.3.54.102 – 10.3.54.102	10.3.54.102
104	10.3.54.103/32	10.3.54.103 – 10.3.54.103	10.3.54.103
105	10.3.54.104/32	10.3.54.104 – 10.3.54.104	10.3.54.104
106	10.3.54.105/32	10.3.54.105 – 10.3.54.105	10.3.54.105
107	10.3.54.106/32	10.3.54.106 – 10.3.54.106	10.3.54.106
108	10.3.54.107/32	10.3.54.107 – 10.3.54.107	10.3.54.107
109	10.3.54.108/32	10.3.54.108 – 10.3.54.108	10.3.54.108
110	10.3.54.109/32	10.3.54.109 – 10.3.54.109	10.3.54.109
111	10.3.54.110/32	10.3.54.110 – 10.3.54.110	10.3.54.110
112	10.3.54.111/32	10.3.54.111 – 10.3.54.111	10.3.54.111
113	10.3.54.112/32	10.3.54.112 – 10.3.54.112	10.3.54.112
114	10.3.54.113/32	10.3.54.113 – 10.3.54.113	10.3.54.113
115	10.3.54.114/32	10.3.54.114 – 10.3.54.114	10.3.54.114
116	10.3.54.115/32	10.3.54.115 – 10.3.54.115	10.3.54.115
117	10.3.54.116/32	10.3.54.116 – 10.3.54.116	10.3.54.116
118	10.3.54.117/32	10.3.54.117 – 10.3.54.117	10.3.54.117
119	10.3.54.118/32	10.3.54.118 – 10.3.54.118	10.3.54.118
120	10.3.54.119/32	10.3.54.119 – 10.3.54.119	10.3.54.119
121	10.3.54.120/32	10.3.54.120 – 10.3.54.120	10.3.54.120
122	10.3.54.121/32	10.3.54.121 – 10.3.54.121	10.3.54.121
123	10.3.54.122/32	10.3.54.122 – 10.3.54.122	10.3.54.122
124	10.3.54.123/32	10.3.54.123 – 10.3.54.123	10.3.54.123
125	10.3.54.124/32	10.3.54.124 – 10.3.54.124	10.3.54.124
126	10.3.54.125/32	10.3.54.125 – 10.3.54.125	10.3.54.125
127	10.3.54.126/32	10.3.54.126 – 10.3.54.126	10.3.54.126
128	10.3.54.127/32	10.3.54.127 – 10.3.54.127	10.3.54.127
129	10.3.54.128/32	10.3.54.128 – 10.3.54.128	10.3.54.128
130	10.3.54.129/32	10.3.54.129 – 10.3.54.129	10.3.54.129
131	10.3.54.130/32	10.3.54.130 – 10.3.54.130	10.3.54.130
132	10.3.54.131/32	10.3.54.131 – 10.3.54.131	10.3.54.131
133	10.3.54.132/32	10.3.54.132 – 10.3.54.132	10.3.54.132
134	10.3.54.133/32	10.3.54.133 – 10.3.54.133	10.3.54.133
135	10.3.54.134/32	10.3.54.134 – 10.3.54.134	10.3.54.134
136	10.3.54.135/32	10.3.54.135 – 10.3.54.135	10.3.54.135
137	10.3.54.136/32	10.3.54.136 – 10.3.54.136	10.3.54.136
138	10.3.54.137/32	10.3.54.137 – 10.3.54.137	10.3.54.137
139	10.3.54.138/32	10.3.54.138 – 10.3.54.138	10.3.54.138
140	10.3.54.139/32	10.3.54.139 – 10.3.54.139	10.3.54.139
141	10.3.54.140/32	10.3.54.140 – 10.3.54.140	10.3.54.140
142	10.3.54.141/32	10.3.54.141 – 10.3.54.141	10.3.54.141
143	10.3.54.142/32	10.3.54.142 – 10.3.54.142	10.3.54.142
144	10.3.54.143/32	10.3.54.143 – 10.3.54.143	10.3.54.143
145	10.3.54.144/32	10.3.54.144 – 10.3.54.144	10.3.54.144
146	10.3.54.145/32	10.3.54.145 – 10.3.54.145	10.3.54.145
147	10.3.54.146/32	10.3.54.146 – 10.3.54.146	10.3.54.146
148	10.3.54.147/32	10.3.54.147 – 10.3.54.147	10.3.54.147
149	10.3.54.148/32	10.3.54.148 – 10.3.54.148	10.3.54.148
150	10.3.54.149/32	10.3.54.149 – 10.3.54.149	10.3.54.149
151	10.3.54.150/32	10.3.54.150 – 10.3.54.150	10.3.54.150
152	10.3.54.151/32	10.3.54.151 – 10.3.54.151	10.3.54.151
153	10.3.54.152/32	10.3.54.152 – 10.3.54.152	10.3.54.152
154	10.3.54.153/32	10.3.54.153 – 10.3.54.153	10.3.54.153
155	10.3.54.154/32	10.3.54.154 – 10.3.54.154	10.3.54.154
156	10.3.54.155/32	10.3.54.155 – 10.3.54.155	10.3.54.155
157	10.3.54.156/32	10.3.54.156 – 10.3.54.156	10.3.54.156
158	10.3.54.157/32	10.3.54.157 – 10.3.54.157	10.3.54.157
159	10.3.54.158/32	10.3.54.158 – 10.3.54.158	10.3.54.158
160	10.3.54.159/32	10.3.54.159 – 10.3.54.159	10.3.54.159
161	10.3.54.160/32	10.3.54.160 – 10.3.54.160	10.3.54.160
162	10.3.54.161/32	10.3.54.161 – 10.3.54.161	10.3.54.161
163	10.3.54.162/32	10.3.54.162 – 10.3.54.162	10.3.54.162
164	10.3.54.163/32	10.3.54.163 – 10.3.54.163	10.3.54.163
165	10.3.54.164/32	10.3.54.164 – 10.3.54.164	10.3.54.164
166	10.3.54.165/32	10.3.54.165 – 10.3.54.165	10.3.54.165
167	10.3.54.166/32	10.3.54.166 – 10.3.54.166	10.3.54.166
168	10.3.54.167/32	10.3.54.167 – 10.3.54.167	10.3.54.167
169	10.3.54.168/32	10.3.54.168 – 10.3.54.168	10.3.54.168
170	10.3.54.169/32	10.3.54.169 – 10.3.54.169	10.3.54.169
171	10.3.54.170/32	10.3.54.170 – 10.3.54.170	10.3.54.170
172	10.3.54.171/32	10.3.54.171 – 10.3.54.171	10.3.54.171
173	10.3.54.172/32	10.3.54.172 – 10.3.54.172	10.3.54.172
174	10.3.54.173/32	10.3.54.173 – 10.3.54.173	10.3.54.173
175	10.3.54.174/32	10.3.54.174 – 10.3.54.174	10.3.54.174
176	10.3.54.175/32	10.3.54.175 – 10.3.54.175	10.3.54.175
177	10.3.54.176/32	10.3.54.176 – 10.3.54.176	10.3.54.176
178	10.3.54.177/32	10.3.54.177 – 10.3.54.177	10.3.54.177
179	10.3.54.178/32	10.3.54.178 – 10.3.54.178	10.3.54.178
180	10.3.54.179/32	10.3.54.179 – 10.3.54.179	10.3.54.179
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200	10.3.54.199/32	10.3.54.199 – 10.3.54.199	10.3.54.199
201	10.3.54.200/32	10.3.54.200 – 10.3.54.200	10.3.54.200
202	10.3.54.201/32	10.3.54.201 – 10.3.54.201	10.3.54.201
203	10.3.54.202/32	10.3.54.202 – 10.3.54.202	10.3.54.202
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205	10.3.54.204/32	10.3.54.204 – 10.3.54.204	10.3.54.204
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207	10.3.54.206/32	10.3.54.206 – 10.3.54.206	10.3.54.206
208	10.3.54.207/32	10.3.54.207 – 10.3.54.207	10.3.54.207
209	10.3.54.208/32	10.3.54.208 – 10.3.54.208	10.3.54.208
210	10.3.54.209/32	10.3.54.209 – 10.3.54.209	10.3.54.209
211	10.3.54.210/32	10.3.54.210 – 10.3.54.210	10.3.54.210
212	10.3.54.211/32	10.3.54.211 – 10.3.54.211	10.3.54.211
213	10.3.54.212/32	10.3.54.212 – 10.3.54.212	10.3.54.212
214	10.3.54.213/32	10.3.54.213 – 10.3.54.213	10.3.54.213
215	10.3.54.214/32	10.3.54.214 – 10.3.54.214	10.3.54.214
216	10.3.54.215/32	10.3.54.215 – 10.3.54.215	10.3.54.215
217	10.3.54.216/32	10.3.54.216 – 10.3.54.216	10.3.54.216
218	10.3.54.217/32	10.3.54.217 – 10.3.54.217	10.3.54.217
219	10.3.54.218/32	10.3.54.218 – 10.3.54.218	10.3.54.218
220	10.3.54.219/32	10.3.54.219 – 10.3.54.219	10.3.54.219
221	10.3.54.220/32	10.3.54.220 – 10.3.54.220	10.3.54.220
222	10.3.54.221/32	10.3.54.221 – 10.3.54.221	10.3.54.221
223	10.3.54.222/32	10.3.54.222 – 10.3.54.222	10.3.54.222
224	10.3.54.223/32	10.3.54.223 – 10.3.54.223	10.3.54.223
225	10.3.54.224/32	10.3.54.224 – 10.3.54.224	10.3.54.224
226	10.3.54.225/32	10.3.54.225 – 10.3.54.225	10.3.54.225
227	10.3.54.226/32	10.3.54.226 – 10.3.54.226	10.3.54.226
228	10.3.54.227/32	10.3.54.227 – 10.3.54.227	10.3.54.227
229	10.3.54.228/32	10.3.54.228 – 10.3.54.228	10.3.54.228
230	10.3.54.229/32	10.3.54.229 – 10.3.54.229	10.3.54.229
231	10.3.54.230/32	10.3.54.230 – 10.3.54.230	10.3.54.230
232	10.3.54.231/32	10.3.54.231 – 10.3.54.231	10.3.54.231
233	10.3.54.232/32	10.3.54.232 – 10.3.54.232	10.3.54.232
234	10.3.54.233/32	10.3.54.233 – 10.3.54.233	10.3.54.233
235	10.3.54.234/32	10.3.54.234 – 10.3.54.234	10.3.54.234
236	10.3.54.235/32	10.3.54.235 – 10.3.54.235	10.3.54.235
237	10.3.54.236/32	10.3.54.236 – 10.3.54.236	10.3.54.236
238	10.3.54.237/32	10.3.54.237 – 10.3.54.237	10.3.54.237
239	10.3.54.238/32	10.3.54.238 – 10.3.54.238	10.3.54.238
240	10.3.54.239/32	10.3.54.239 – 10.3.54.239	10.3.54.239
241	10.3.54.240/32	10.3.54.240 – 10.3.54.240	10.3.54.240
242	10.3.54.241/32	10.3.54.241 – 10.3.54.241	10.3.54.241
243	10.3.54.242/32	10.3.54.242 – 10.3.54.242	10.3.54.242
244	10.3.54.243/32	10.3.54.243 – 10.3.54.243	10.3.54.243
245	10.3.54.244/32	10.3.54.244 – 10.3.54.244	10.3.54.244
246	10.3.54.245/32	10.3.54.245 – 10.3.54.245	10.3.54.245
247	10.3.54.246/32	10.3.54.246 – 10.3.54.246	10.3.54.246
248	10.3.54.247/32	10.3.54.247 – 10.3.54.247	10.3.54.247
249	10.3.54.248/32	10.3.54.248 – 10.3.54.248	10.3.54.248
250	10.3.54.249/32	10.3.54.249 – 10.3.54.249	10.3.54.249
251	10.3.54.250/32	10.3.54.250 – 10.3.54.250	10.3.54.250
252	10.3.54.251/32	10.3.54.251 – 10.3.54.251	10.3.54.251
253	10.3.54.252/32	10.3.54.252 – 10.3.54.252	10.3.54.252
254	10.3.54.253/32	10.3.54.253 – 10.3.54.253	10.3.54.253
255	10.3.54.254/32	10.3.54.254 – 10.3.54.254	10.3.54.254
256	10.3.54.255/32	10.3.54.255 – 10.3.54.255	10.3.54.255

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 →