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)10.2.177.0/24

network10.2.177.0/24

broadcast10.2.177.255

first host10.2.177.1

last host10.2.177.254

subnet mask255.255.255.0

wildcard0.0.0.255

addresses256

usable hosts254

classA

ipcalc 10.2.177.0/24

address00001010.00000010.10110001.00000000

subnet mask11111111.11111111.11111111.00000000

network00001010.00000010.10110001.00000000

broadcast00001010.00000010.10110001.11111111

green = network part, grey = host part

hex0x0a02b100

decimal167948544

reverse dns0.177.2.10.in-addr.arpa

ipv4-mapped::ffff:a02:b100

/24 split into /32 · 256 subnets

close ×

#	network	host range	broadcast
1	10.2.177.0/32	10.2.177.0 – 10.2.177.0	10.2.177.0
2	10.2.177.1/32	10.2.177.1 – 10.2.177.1	10.2.177.1
3	10.2.177.2/32	10.2.177.2 – 10.2.177.2	10.2.177.2
4	10.2.177.3/32	10.2.177.3 – 10.2.177.3	10.2.177.3
5	10.2.177.4/32	10.2.177.4 – 10.2.177.4	10.2.177.4
6	10.2.177.5/32	10.2.177.5 – 10.2.177.5	10.2.177.5
7	10.2.177.6/32	10.2.177.6 – 10.2.177.6	10.2.177.6
8	10.2.177.7/32	10.2.177.7 – 10.2.177.7	10.2.177.7
9	10.2.177.8/32	10.2.177.8 – 10.2.177.8	10.2.177.8
10	10.2.177.9/32	10.2.177.9 – 10.2.177.9	10.2.177.9
11	10.2.177.10/32	10.2.177.10 – 10.2.177.10	10.2.177.10
12	10.2.177.11/32	10.2.177.11 – 10.2.177.11	10.2.177.11
13	10.2.177.12/32	10.2.177.12 – 10.2.177.12	10.2.177.12
14	10.2.177.13/32	10.2.177.13 – 10.2.177.13	10.2.177.13
15	10.2.177.14/32	10.2.177.14 – 10.2.177.14	10.2.177.14
16	10.2.177.15/32	10.2.177.15 – 10.2.177.15	10.2.177.15
17	10.2.177.16/32	10.2.177.16 – 10.2.177.16	10.2.177.16
18	10.2.177.17/32	10.2.177.17 – 10.2.177.17	10.2.177.17
19	10.2.177.18/32	10.2.177.18 – 10.2.177.18	10.2.177.18
20	10.2.177.19/32	10.2.177.19 – 10.2.177.19	10.2.177.19
21	10.2.177.20/32	10.2.177.20 – 10.2.177.20	10.2.177.20
22	10.2.177.21/32	10.2.177.21 – 10.2.177.21	10.2.177.21
23	10.2.177.22/32	10.2.177.22 – 10.2.177.22	10.2.177.22
24	10.2.177.23/32	10.2.177.23 – 10.2.177.23	10.2.177.23
25	10.2.177.24/32	10.2.177.24 – 10.2.177.24	10.2.177.24
26	10.2.177.25/32	10.2.177.25 – 10.2.177.25	10.2.177.25
27	10.2.177.26/32	10.2.177.26 – 10.2.177.26	10.2.177.26
28	10.2.177.27/32	10.2.177.27 – 10.2.177.27	10.2.177.27
29	10.2.177.28/32	10.2.177.28 – 10.2.177.28	10.2.177.28
30	10.2.177.29/32	10.2.177.29 – 10.2.177.29	10.2.177.29
31	10.2.177.30/32	10.2.177.30 – 10.2.177.30	10.2.177.30
32	10.2.177.31/32	10.2.177.31 – 10.2.177.31	10.2.177.31
33	10.2.177.32/32	10.2.177.32 – 10.2.177.32	10.2.177.32
34	10.2.177.33/32	10.2.177.33 – 10.2.177.33	10.2.177.33
35	10.2.177.34/32	10.2.177.34 – 10.2.177.34	10.2.177.34
36	10.2.177.35/32	10.2.177.35 – 10.2.177.35	10.2.177.35
37	10.2.177.36/32	10.2.177.36 – 10.2.177.36	10.2.177.36
38	10.2.177.37/32	10.2.177.37 – 10.2.177.37	10.2.177.37
39	10.2.177.38/32	10.2.177.38 – 10.2.177.38	10.2.177.38
40	10.2.177.39/32	10.2.177.39 – 10.2.177.39	10.2.177.39
41	10.2.177.40/32	10.2.177.40 – 10.2.177.40	10.2.177.40
42	10.2.177.41/32	10.2.177.41 – 10.2.177.41	10.2.177.41
43	10.2.177.42/32	10.2.177.42 – 10.2.177.42	10.2.177.42
44	10.2.177.43/32	10.2.177.43 – 10.2.177.43	10.2.177.43
45	10.2.177.44/32	10.2.177.44 – 10.2.177.44	10.2.177.44
46	10.2.177.45/32	10.2.177.45 – 10.2.177.45	10.2.177.45
47	10.2.177.46/32	10.2.177.46 – 10.2.177.46	10.2.177.46
48	10.2.177.47/32	10.2.177.47 – 10.2.177.47	10.2.177.47
49	10.2.177.48/32	10.2.177.48 – 10.2.177.48	10.2.177.48
50	10.2.177.49/32	10.2.177.49 – 10.2.177.49	10.2.177.49
51	10.2.177.50/32	10.2.177.50 – 10.2.177.50	10.2.177.50
52	10.2.177.51/32	10.2.177.51 – 10.2.177.51	10.2.177.51
53	10.2.177.52/32	10.2.177.52 – 10.2.177.52	10.2.177.52
54	10.2.177.53/32	10.2.177.53 – 10.2.177.53	10.2.177.53
55	10.2.177.54/32	10.2.177.54 – 10.2.177.54	10.2.177.54
56	10.2.177.55/32	10.2.177.55 – 10.2.177.55	10.2.177.55
57	10.2.177.56/32	10.2.177.56 – 10.2.177.56	10.2.177.56
58	10.2.177.57/32	10.2.177.57 – 10.2.177.57	10.2.177.57
59	10.2.177.58/32	10.2.177.58 – 10.2.177.58	10.2.177.58
60	10.2.177.59/32	10.2.177.59 – 10.2.177.59	10.2.177.59
61	10.2.177.60/32	10.2.177.60 – 10.2.177.60	10.2.177.60
62	10.2.177.61/32	10.2.177.61 – 10.2.177.61	10.2.177.61
63	10.2.177.62/32	10.2.177.62 – 10.2.177.62	10.2.177.62
64	10.2.177.63/32	10.2.177.63 – 10.2.177.63	10.2.177.63
65	10.2.177.64/32	10.2.177.64 – 10.2.177.64	10.2.177.64
66	10.2.177.65/32	10.2.177.65 – 10.2.177.65	10.2.177.65
67	10.2.177.66/32	10.2.177.66 – 10.2.177.66	10.2.177.66
68	10.2.177.67/32	10.2.177.67 – 10.2.177.67	10.2.177.67
69	10.2.177.68/32	10.2.177.68 – 10.2.177.68	10.2.177.68
70	10.2.177.69/32	10.2.177.69 – 10.2.177.69	10.2.177.69
71	10.2.177.70/32	10.2.177.70 – 10.2.177.70	10.2.177.70
72	10.2.177.71/32	10.2.177.71 – 10.2.177.71	10.2.177.71
73	10.2.177.72/32	10.2.177.72 – 10.2.177.72	10.2.177.72
74	10.2.177.73/32	10.2.177.73 – 10.2.177.73	10.2.177.73
75	10.2.177.74/32	10.2.177.74 – 10.2.177.74	10.2.177.74
76	10.2.177.75/32	10.2.177.75 – 10.2.177.75	10.2.177.75
77	10.2.177.76/32	10.2.177.76 – 10.2.177.76	10.2.177.76
78	10.2.177.77/32	10.2.177.77 – 10.2.177.77	10.2.177.77
79	10.2.177.78/32	10.2.177.78 – 10.2.177.78	10.2.177.78
80	10.2.177.79/32	10.2.177.79 – 10.2.177.79	10.2.177.79
81	10.2.177.80/32	10.2.177.80 – 10.2.177.80	10.2.177.80
82	10.2.177.81/32	10.2.177.81 – 10.2.177.81	10.2.177.81
83	10.2.177.82/32	10.2.177.82 – 10.2.177.82	10.2.177.82
84	10.2.177.83/32	10.2.177.83 – 10.2.177.83	10.2.177.83
85	10.2.177.84/32	10.2.177.84 – 10.2.177.84	10.2.177.84
86	10.2.177.85/32	10.2.177.85 – 10.2.177.85	10.2.177.85
87	10.2.177.86/32	10.2.177.86 – 10.2.177.86	10.2.177.86
88	10.2.177.87/32	10.2.177.87 – 10.2.177.87	10.2.177.87
89	10.2.177.88/32	10.2.177.88 – 10.2.177.88	10.2.177.88
90	10.2.177.89/32	10.2.177.89 – 10.2.177.89	10.2.177.89
91	10.2.177.90/32	10.2.177.90 – 10.2.177.90	10.2.177.90
92	10.2.177.91/32	10.2.177.91 – 10.2.177.91	10.2.177.91
93	10.2.177.92/32	10.2.177.92 – 10.2.177.92	10.2.177.92
94	10.2.177.93/32	10.2.177.93 – 10.2.177.93	10.2.177.93
95	10.2.177.94/32	10.2.177.94 – 10.2.177.94	10.2.177.94
96	10.2.177.95/32	10.2.177.95 – 10.2.177.95	10.2.177.95
97	10.2.177.96/32	10.2.177.96 – 10.2.177.96	10.2.177.96
98	10.2.177.97/32	10.2.177.97 – 10.2.177.97	10.2.177.97
99	10.2.177.98/32	10.2.177.98 – 10.2.177.98	10.2.177.98
100	10.2.177.99/32	10.2.177.99 – 10.2.177.99	10.2.177.99
101	10.2.177.100/32	10.2.177.100 – 10.2.177.100	10.2.177.100
102	10.2.177.101/32	10.2.177.101 – 10.2.177.101	10.2.177.101
103	10.2.177.102/32	10.2.177.102 – 10.2.177.102	10.2.177.102
104	10.2.177.103/32	10.2.177.103 – 10.2.177.103	10.2.177.103
105	10.2.177.104/32	10.2.177.104 – 10.2.177.104	10.2.177.104
106	10.2.177.105/32	10.2.177.105 – 10.2.177.105	10.2.177.105
107	10.2.177.106/32	10.2.177.106 – 10.2.177.106	10.2.177.106
108	10.2.177.107/32	10.2.177.107 – 10.2.177.107	10.2.177.107
109	10.2.177.108/32	10.2.177.108 – 10.2.177.108	10.2.177.108
110	10.2.177.109/32	10.2.177.109 – 10.2.177.109	10.2.177.109
111	10.2.177.110/32	10.2.177.110 – 10.2.177.110	10.2.177.110
112	10.2.177.111/32	10.2.177.111 – 10.2.177.111	10.2.177.111
113	10.2.177.112/32	10.2.177.112 – 10.2.177.112	10.2.177.112
114	10.2.177.113/32	10.2.177.113 – 10.2.177.113	10.2.177.113
115	10.2.177.114/32	10.2.177.114 – 10.2.177.114	10.2.177.114
116	10.2.177.115/32	10.2.177.115 – 10.2.177.115	10.2.177.115
117	10.2.177.116/32	10.2.177.116 – 10.2.177.116	10.2.177.116
118	10.2.177.117/32	10.2.177.117 – 10.2.177.117	10.2.177.117
119	10.2.177.118/32	10.2.177.118 – 10.2.177.118	10.2.177.118
120	10.2.177.119/32	10.2.177.119 – 10.2.177.119	10.2.177.119
121	10.2.177.120/32	10.2.177.120 – 10.2.177.120	10.2.177.120
122	10.2.177.121/32	10.2.177.121 – 10.2.177.121	10.2.177.121
123	10.2.177.122/32	10.2.177.122 – 10.2.177.122	10.2.177.122
124	10.2.177.123/32	10.2.177.123 – 10.2.177.123	10.2.177.123
125	10.2.177.124/32	10.2.177.124 – 10.2.177.124	10.2.177.124
126	10.2.177.125/32	10.2.177.125 – 10.2.177.125	10.2.177.125
127	10.2.177.126/32	10.2.177.126 – 10.2.177.126	10.2.177.126
128	10.2.177.127/32	10.2.177.127 – 10.2.177.127	10.2.177.127
129	10.2.177.128/32	10.2.177.128 – 10.2.177.128	10.2.177.128
130	10.2.177.129/32	10.2.177.129 – 10.2.177.129	10.2.177.129
131	10.2.177.130/32	10.2.177.130 – 10.2.177.130	10.2.177.130
132	10.2.177.131/32	10.2.177.131 – 10.2.177.131	10.2.177.131
133	10.2.177.132/32	10.2.177.132 – 10.2.177.132	10.2.177.132
134	10.2.177.133/32	10.2.177.133 – 10.2.177.133	10.2.177.133
135	10.2.177.134/32	10.2.177.134 – 10.2.177.134	10.2.177.134
136	10.2.177.135/32	10.2.177.135 – 10.2.177.135	10.2.177.135
137	10.2.177.136/32	10.2.177.136 – 10.2.177.136	10.2.177.136
138	10.2.177.137/32	10.2.177.137 – 10.2.177.137	10.2.177.137
139	10.2.177.138/32	10.2.177.138 – 10.2.177.138	10.2.177.138
140	10.2.177.139/32	10.2.177.139 – 10.2.177.139	10.2.177.139
141	10.2.177.140/32	10.2.177.140 – 10.2.177.140	10.2.177.140
142	10.2.177.141/32	10.2.177.141 – 10.2.177.141	10.2.177.141
143	10.2.177.142/32	10.2.177.142 – 10.2.177.142	10.2.177.142
144	10.2.177.143/32	10.2.177.143 – 10.2.177.143	10.2.177.143
145	10.2.177.144/32	10.2.177.144 – 10.2.177.144	10.2.177.144
146	10.2.177.145/32	10.2.177.145 – 10.2.177.145	10.2.177.145
147	10.2.177.146/32	10.2.177.146 – 10.2.177.146	10.2.177.146
148	10.2.177.147/32	10.2.177.147 – 10.2.177.147	10.2.177.147
149	10.2.177.148/32	10.2.177.148 – 10.2.177.148	10.2.177.148
150	10.2.177.149/32	10.2.177.149 – 10.2.177.149	10.2.177.149
151	10.2.177.150/32	10.2.177.150 – 10.2.177.150	10.2.177.150
152	10.2.177.151/32	10.2.177.151 – 10.2.177.151	10.2.177.151
153	10.2.177.152/32	10.2.177.152 – 10.2.177.152	10.2.177.152
154	10.2.177.153/32	10.2.177.153 – 10.2.177.153	10.2.177.153
155	10.2.177.154/32	10.2.177.154 – 10.2.177.154	10.2.177.154
156	10.2.177.155/32	10.2.177.155 – 10.2.177.155	10.2.177.155
157	10.2.177.156/32	10.2.177.156 – 10.2.177.156	10.2.177.156
158	10.2.177.157/32	10.2.177.157 – 10.2.177.157	10.2.177.157
159	10.2.177.158/32	10.2.177.158 – 10.2.177.158	10.2.177.158
160	10.2.177.159/32	10.2.177.159 – 10.2.177.159	10.2.177.159
161	10.2.177.160/32	10.2.177.160 – 10.2.177.160	10.2.177.160
162	10.2.177.161/32	10.2.177.161 – 10.2.177.161	10.2.177.161
163	10.2.177.162/32	10.2.177.162 – 10.2.177.162	10.2.177.162
164	10.2.177.163/32	10.2.177.163 – 10.2.177.163	10.2.177.163
165	10.2.177.164/32	10.2.177.164 – 10.2.177.164	10.2.177.164
166	10.2.177.165/32	10.2.177.165 – 10.2.177.165	10.2.177.165
167	10.2.177.166/32	10.2.177.166 – 10.2.177.166	10.2.177.166
168	10.2.177.167/32	10.2.177.167 – 10.2.177.167	10.2.177.167
169	10.2.177.168/32	10.2.177.168 – 10.2.177.168	10.2.177.168
170	10.2.177.169/32	10.2.177.169 – 10.2.177.169	10.2.177.169
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177	10.2.177.176/32	10.2.177.176 – 10.2.177.176	10.2.177.176
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210	10.2.177.209/32	10.2.177.209 – 10.2.177.209	10.2.177.209
211	10.2.177.210/32	10.2.177.210 – 10.2.177.210	10.2.177.210
212	10.2.177.211/32	10.2.177.211 – 10.2.177.211	10.2.177.211
213	10.2.177.212/32	10.2.177.212 – 10.2.177.212	10.2.177.212
214	10.2.177.213/32	10.2.177.213 – 10.2.177.213	10.2.177.213
215	10.2.177.214/32	10.2.177.214 – 10.2.177.214	10.2.177.214
216	10.2.177.215/32	10.2.177.215 – 10.2.177.215	10.2.177.215
217	10.2.177.216/32	10.2.177.216 – 10.2.177.216	10.2.177.216
218	10.2.177.217/32	10.2.177.217 – 10.2.177.217	10.2.177.217
219	10.2.177.218/32	10.2.177.218 – 10.2.177.218	10.2.177.218
220	10.2.177.219/32	10.2.177.219 – 10.2.177.219	10.2.177.219
221	10.2.177.220/32	10.2.177.220 – 10.2.177.220	10.2.177.220
222	10.2.177.221/32	10.2.177.221 – 10.2.177.221	10.2.177.221
223	10.2.177.222/32	10.2.177.222 – 10.2.177.222	10.2.177.222
224	10.2.177.223/32	10.2.177.223 – 10.2.177.223	10.2.177.223
225	10.2.177.224/32	10.2.177.224 – 10.2.177.224	10.2.177.224
226	10.2.177.225/32	10.2.177.225 – 10.2.177.225	10.2.177.225
227	10.2.177.226/32	10.2.177.226 – 10.2.177.226	10.2.177.226
228	10.2.177.227/32	10.2.177.227 – 10.2.177.227	10.2.177.227
229	10.2.177.228/32	10.2.177.228 – 10.2.177.228	10.2.177.228
230	10.2.177.229/32	10.2.177.229 – 10.2.177.229	10.2.177.229
231	10.2.177.230/32	10.2.177.230 – 10.2.177.230	10.2.177.230
232	10.2.177.231/32	10.2.177.231 – 10.2.177.231	10.2.177.231
233	10.2.177.232/32	10.2.177.232 – 10.2.177.232	10.2.177.232
234	10.2.177.233/32	10.2.177.233 – 10.2.177.233	10.2.177.233
235	10.2.177.234/32	10.2.177.234 – 10.2.177.234	10.2.177.234
236	10.2.177.235/32	10.2.177.235 – 10.2.177.235	10.2.177.235
237	10.2.177.236/32	10.2.177.236 – 10.2.177.236	10.2.177.236
238	10.2.177.237/32	10.2.177.237 – 10.2.177.237	10.2.177.237
239	10.2.177.238/32	10.2.177.238 – 10.2.177.238	10.2.177.238
240	10.2.177.239/32	10.2.177.239 – 10.2.177.239	10.2.177.239
241	10.2.177.240/32	10.2.177.240 – 10.2.177.240	10.2.177.240
242	10.2.177.241/32	10.2.177.241 – 10.2.177.241	10.2.177.241
243	10.2.177.242/32	10.2.177.242 – 10.2.177.242	10.2.177.242
244	10.2.177.243/32	10.2.177.243 – 10.2.177.243	10.2.177.243
245	10.2.177.244/32	10.2.177.244 – 10.2.177.244	10.2.177.244
246	10.2.177.245/32	10.2.177.245 – 10.2.177.245	10.2.177.245
247	10.2.177.246/32	10.2.177.246 – 10.2.177.246	10.2.177.246
248	10.2.177.247/32	10.2.177.247 – 10.2.177.247	10.2.177.247
249	10.2.177.248/32	10.2.177.248 – 10.2.177.248	10.2.177.248
250	10.2.177.249/32	10.2.177.249 – 10.2.177.249	10.2.177.249
251	10.2.177.250/32	10.2.177.250 – 10.2.177.250	10.2.177.250
252	10.2.177.251/32	10.2.177.251 – 10.2.177.251	10.2.177.251
253	10.2.177.252/32	10.2.177.252 – 10.2.177.252	10.2.177.252
254	10.2.177.253/32	10.2.177.253 – 10.2.177.253	10.2.177.253
255	10.2.177.254/32	10.2.177.254 – 10.2.177.254	10.2.177.254
256	10.2.177.255/32	10.2.177.255 – 10.2.177.255	10.2.177.255

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 →