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)10.167.31.0/24

network10.167.31.0/24

broadcast10.167.31.255

first host10.167.31.1

last host10.167.31.254

subnet mask255.255.255.0

wildcard0.0.0.255

addresses256

usable hosts254

classA

ipcalc 10.167.31.0/24

address00001010.10100111.00011111.00000000

subnet mask11111111.11111111.11111111.00000000

network00001010.10100111.00011111.00000000

broadcast00001010.10100111.00011111.11111111

green = network part, grey = host part

hex0x0aa71f00

decimal178724608

reverse dns0.31.167.10.in-addr.arpa

ipv4-mapped::ffff:aa7:1f00

/24 split into /32 · 256 subnets

close ×

#	network	host range	broadcast
1	10.167.31.0/32	10.167.31.0 – 10.167.31.0	10.167.31.0
2	10.167.31.1/32	10.167.31.1 – 10.167.31.1	10.167.31.1
3	10.167.31.2/32	10.167.31.2 – 10.167.31.2	10.167.31.2
4	10.167.31.3/32	10.167.31.3 – 10.167.31.3	10.167.31.3
5	10.167.31.4/32	10.167.31.4 – 10.167.31.4	10.167.31.4
6	10.167.31.5/32	10.167.31.5 – 10.167.31.5	10.167.31.5
7	10.167.31.6/32	10.167.31.6 – 10.167.31.6	10.167.31.6
8	10.167.31.7/32	10.167.31.7 – 10.167.31.7	10.167.31.7
9	10.167.31.8/32	10.167.31.8 – 10.167.31.8	10.167.31.8
10	10.167.31.9/32	10.167.31.9 – 10.167.31.9	10.167.31.9
11	10.167.31.10/32	10.167.31.10 – 10.167.31.10	10.167.31.10
12	10.167.31.11/32	10.167.31.11 – 10.167.31.11	10.167.31.11
13	10.167.31.12/32	10.167.31.12 – 10.167.31.12	10.167.31.12
14	10.167.31.13/32	10.167.31.13 – 10.167.31.13	10.167.31.13
15	10.167.31.14/32	10.167.31.14 – 10.167.31.14	10.167.31.14
16	10.167.31.15/32	10.167.31.15 – 10.167.31.15	10.167.31.15
17	10.167.31.16/32	10.167.31.16 – 10.167.31.16	10.167.31.16
18	10.167.31.17/32	10.167.31.17 – 10.167.31.17	10.167.31.17
19	10.167.31.18/32	10.167.31.18 – 10.167.31.18	10.167.31.18
20	10.167.31.19/32	10.167.31.19 – 10.167.31.19	10.167.31.19
21	10.167.31.20/32	10.167.31.20 – 10.167.31.20	10.167.31.20
22	10.167.31.21/32	10.167.31.21 – 10.167.31.21	10.167.31.21
23	10.167.31.22/32	10.167.31.22 – 10.167.31.22	10.167.31.22
24	10.167.31.23/32	10.167.31.23 – 10.167.31.23	10.167.31.23
25	10.167.31.24/32	10.167.31.24 – 10.167.31.24	10.167.31.24
26	10.167.31.25/32	10.167.31.25 – 10.167.31.25	10.167.31.25
27	10.167.31.26/32	10.167.31.26 – 10.167.31.26	10.167.31.26
28	10.167.31.27/32	10.167.31.27 – 10.167.31.27	10.167.31.27
29	10.167.31.28/32	10.167.31.28 – 10.167.31.28	10.167.31.28
30	10.167.31.29/32	10.167.31.29 – 10.167.31.29	10.167.31.29
31	10.167.31.30/32	10.167.31.30 – 10.167.31.30	10.167.31.30
32	10.167.31.31/32	10.167.31.31 – 10.167.31.31	10.167.31.31
33	10.167.31.32/32	10.167.31.32 – 10.167.31.32	10.167.31.32
34	10.167.31.33/32	10.167.31.33 – 10.167.31.33	10.167.31.33
35	10.167.31.34/32	10.167.31.34 – 10.167.31.34	10.167.31.34
36	10.167.31.35/32	10.167.31.35 – 10.167.31.35	10.167.31.35
37	10.167.31.36/32	10.167.31.36 – 10.167.31.36	10.167.31.36
38	10.167.31.37/32	10.167.31.37 – 10.167.31.37	10.167.31.37
39	10.167.31.38/32	10.167.31.38 – 10.167.31.38	10.167.31.38
40	10.167.31.39/32	10.167.31.39 – 10.167.31.39	10.167.31.39
41	10.167.31.40/32	10.167.31.40 – 10.167.31.40	10.167.31.40
42	10.167.31.41/32	10.167.31.41 – 10.167.31.41	10.167.31.41
43	10.167.31.42/32	10.167.31.42 – 10.167.31.42	10.167.31.42
44	10.167.31.43/32	10.167.31.43 – 10.167.31.43	10.167.31.43
45	10.167.31.44/32	10.167.31.44 – 10.167.31.44	10.167.31.44
46	10.167.31.45/32	10.167.31.45 – 10.167.31.45	10.167.31.45
47	10.167.31.46/32	10.167.31.46 – 10.167.31.46	10.167.31.46
48	10.167.31.47/32	10.167.31.47 – 10.167.31.47	10.167.31.47
49	10.167.31.48/32	10.167.31.48 – 10.167.31.48	10.167.31.48
50	10.167.31.49/32	10.167.31.49 – 10.167.31.49	10.167.31.49
51	10.167.31.50/32	10.167.31.50 – 10.167.31.50	10.167.31.50
52	10.167.31.51/32	10.167.31.51 – 10.167.31.51	10.167.31.51
53	10.167.31.52/32	10.167.31.52 – 10.167.31.52	10.167.31.52
54	10.167.31.53/32	10.167.31.53 – 10.167.31.53	10.167.31.53
55	10.167.31.54/32	10.167.31.54 – 10.167.31.54	10.167.31.54
56	10.167.31.55/32	10.167.31.55 – 10.167.31.55	10.167.31.55
57	10.167.31.56/32	10.167.31.56 – 10.167.31.56	10.167.31.56
58	10.167.31.57/32	10.167.31.57 – 10.167.31.57	10.167.31.57
59	10.167.31.58/32	10.167.31.58 – 10.167.31.58	10.167.31.58
60	10.167.31.59/32	10.167.31.59 – 10.167.31.59	10.167.31.59
61	10.167.31.60/32	10.167.31.60 – 10.167.31.60	10.167.31.60
62	10.167.31.61/32	10.167.31.61 – 10.167.31.61	10.167.31.61
63	10.167.31.62/32	10.167.31.62 – 10.167.31.62	10.167.31.62
64	10.167.31.63/32	10.167.31.63 – 10.167.31.63	10.167.31.63
65	10.167.31.64/32	10.167.31.64 – 10.167.31.64	10.167.31.64
66	10.167.31.65/32	10.167.31.65 – 10.167.31.65	10.167.31.65
67	10.167.31.66/32	10.167.31.66 – 10.167.31.66	10.167.31.66
68	10.167.31.67/32	10.167.31.67 – 10.167.31.67	10.167.31.67
69	10.167.31.68/32	10.167.31.68 – 10.167.31.68	10.167.31.68
70	10.167.31.69/32	10.167.31.69 – 10.167.31.69	10.167.31.69
71	10.167.31.70/32	10.167.31.70 – 10.167.31.70	10.167.31.70
72	10.167.31.71/32	10.167.31.71 – 10.167.31.71	10.167.31.71
73	10.167.31.72/32	10.167.31.72 – 10.167.31.72	10.167.31.72
74	10.167.31.73/32	10.167.31.73 – 10.167.31.73	10.167.31.73
75	10.167.31.74/32	10.167.31.74 – 10.167.31.74	10.167.31.74
76	10.167.31.75/32	10.167.31.75 – 10.167.31.75	10.167.31.75
77	10.167.31.76/32	10.167.31.76 – 10.167.31.76	10.167.31.76
78	10.167.31.77/32	10.167.31.77 – 10.167.31.77	10.167.31.77
79	10.167.31.78/32	10.167.31.78 – 10.167.31.78	10.167.31.78
80	10.167.31.79/32	10.167.31.79 – 10.167.31.79	10.167.31.79
81	10.167.31.80/32	10.167.31.80 – 10.167.31.80	10.167.31.80
82	10.167.31.81/32	10.167.31.81 – 10.167.31.81	10.167.31.81
83	10.167.31.82/32	10.167.31.82 – 10.167.31.82	10.167.31.82
84	10.167.31.83/32	10.167.31.83 – 10.167.31.83	10.167.31.83
85	10.167.31.84/32	10.167.31.84 – 10.167.31.84	10.167.31.84
86	10.167.31.85/32	10.167.31.85 – 10.167.31.85	10.167.31.85
87	10.167.31.86/32	10.167.31.86 – 10.167.31.86	10.167.31.86
88	10.167.31.87/32	10.167.31.87 – 10.167.31.87	10.167.31.87
89	10.167.31.88/32	10.167.31.88 – 10.167.31.88	10.167.31.88
90	10.167.31.89/32	10.167.31.89 – 10.167.31.89	10.167.31.89
91	10.167.31.90/32	10.167.31.90 – 10.167.31.90	10.167.31.90
92	10.167.31.91/32	10.167.31.91 – 10.167.31.91	10.167.31.91
93	10.167.31.92/32	10.167.31.92 – 10.167.31.92	10.167.31.92
94	10.167.31.93/32	10.167.31.93 – 10.167.31.93	10.167.31.93
95	10.167.31.94/32	10.167.31.94 – 10.167.31.94	10.167.31.94
96	10.167.31.95/32	10.167.31.95 – 10.167.31.95	10.167.31.95
97	10.167.31.96/32	10.167.31.96 – 10.167.31.96	10.167.31.96
98	10.167.31.97/32	10.167.31.97 – 10.167.31.97	10.167.31.97
99	10.167.31.98/32	10.167.31.98 – 10.167.31.98	10.167.31.98
100	10.167.31.99/32	10.167.31.99 – 10.167.31.99	10.167.31.99
101	10.167.31.100/32	10.167.31.100 – 10.167.31.100	10.167.31.100
102	10.167.31.101/32	10.167.31.101 – 10.167.31.101	10.167.31.101
103	10.167.31.102/32	10.167.31.102 – 10.167.31.102	10.167.31.102
104	10.167.31.103/32	10.167.31.103 – 10.167.31.103	10.167.31.103
105	10.167.31.104/32	10.167.31.104 – 10.167.31.104	10.167.31.104
106	10.167.31.105/32	10.167.31.105 – 10.167.31.105	10.167.31.105
107	10.167.31.106/32	10.167.31.106 – 10.167.31.106	10.167.31.106
108	10.167.31.107/32	10.167.31.107 – 10.167.31.107	10.167.31.107
109	10.167.31.108/32	10.167.31.108 – 10.167.31.108	10.167.31.108
110	10.167.31.109/32	10.167.31.109 – 10.167.31.109	10.167.31.109
111	10.167.31.110/32	10.167.31.110 – 10.167.31.110	10.167.31.110
112	10.167.31.111/32	10.167.31.111 – 10.167.31.111	10.167.31.111
113	10.167.31.112/32	10.167.31.112 – 10.167.31.112	10.167.31.112
114	10.167.31.113/32	10.167.31.113 – 10.167.31.113	10.167.31.113
115	10.167.31.114/32	10.167.31.114 – 10.167.31.114	10.167.31.114
116	10.167.31.115/32	10.167.31.115 – 10.167.31.115	10.167.31.115
117	10.167.31.116/32	10.167.31.116 – 10.167.31.116	10.167.31.116
118	10.167.31.117/32	10.167.31.117 – 10.167.31.117	10.167.31.117
119	10.167.31.118/32	10.167.31.118 – 10.167.31.118	10.167.31.118
120	10.167.31.119/32	10.167.31.119 – 10.167.31.119	10.167.31.119
121	10.167.31.120/32	10.167.31.120 – 10.167.31.120	10.167.31.120
122	10.167.31.121/32	10.167.31.121 – 10.167.31.121	10.167.31.121
123	10.167.31.122/32	10.167.31.122 – 10.167.31.122	10.167.31.122
124	10.167.31.123/32	10.167.31.123 – 10.167.31.123	10.167.31.123
125	10.167.31.124/32	10.167.31.124 – 10.167.31.124	10.167.31.124
126	10.167.31.125/32	10.167.31.125 – 10.167.31.125	10.167.31.125
127	10.167.31.126/32	10.167.31.126 – 10.167.31.126	10.167.31.126
128	10.167.31.127/32	10.167.31.127 – 10.167.31.127	10.167.31.127
129	10.167.31.128/32	10.167.31.128 – 10.167.31.128	10.167.31.128
130	10.167.31.129/32	10.167.31.129 – 10.167.31.129	10.167.31.129
131	10.167.31.130/32	10.167.31.130 – 10.167.31.130	10.167.31.130
132	10.167.31.131/32	10.167.31.131 – 10.167.31.131	10.167.31.131
133	10.167.31.132/32	10.167.31.132 – 10.167.31.132	10.167.31.132
134	10.167.31.133/32	10.167.31.133 – 10.167.31.133	10.167.31.133
135	10.167.31.134/32	10.167.31.134 – 10.167.31.134	10.167.31.134
136	10.167.31.135/32	10.167.31.135 – 10.167.31.135	10.167.31.135
137	10.167.31.136/32	10.167.31.136 – 10.167.31.136	10.167.31.136
138	10.167.31.137/32	10.167.31.137 – 10.167.31.137	10.167.31.137
139	10.167.31.138/32	10.167.31.138 – 10.167.31.138	10.167.31.138
140	10.167.31.139/32	10.167.31.139 – 10.167.31.139	10.167.31.139
141	10.167.31.140/32	10.167.31.140 – 10.167.31.140	10.167.31.140
142	10.167.31.141/32	10.167.31.141 – 10.167.31.141	10.167.31.141
143	10.167.31.142/32	10.167.31.142 – 10.167.31.142	10.167.31.142
144	10.167.31.143/32	10.167.31.143 – 10.167.31.143	10.167.31.143
145	10.167.31.144/32	10.167.31.144 – 10.167.31.144	10.167.31.144
146	10.167.31.145/32	10.167.31.145 – 10.167.31.145	10.167.31.145
147	10.167.31.146/32	10.167.31.146 – 10.167.31.146	10.167.31.146
148	10.167.31.147/32	10.167.31.147 – 10.167.31.147	10.167.31.147
149	10.167.31.148/32	10.167.31.148 – 10.167.31.148	10.167.31.148
150	10.167.31.149/32	10.167.31.149 – 10.167.31.149	10.167.31.149
151	10.167.31.150/32	10.167.31.150 – 10.167.31.150	10.167.31.150
152	10.167.31.151/32	10.167.31.151 – 10.167.31.151	10.167.31.151
153	10.167.31.152/32	10.167.31.152 – 10.167.31.152	10.167.31.152
154	10.167.31.153/32	10.167.31.153 – 10.167.31.153	10.167.31.153
155	10.167.31.154/32	10.167.31.154 – 10.167.31.154	10.167.31.154
156	10.167.31.155/32	10.167.31.155 – 10.167.31.155	10.167.31.155
157	10.167.31.156/32	10.167.31.156 – 10.167.31.156	10.167.31.156
158	10.167.31.157/32	10.167.31.157 – 10.167.31.157	10.167.31.157
159	10.167.31.158/32	10.167.31.158 – 10.167.31.158	10.167.31.158
160	10.167.31.159/32	10.167.31.159 – 10.167.31.159	10.167.31.159
161	10.167.31.160/32	10.167.31.160 – 10.167.31.160	10.167.31.160
162	10.167.31.161/32	10.167.31.161 – 10.167.31.161	10.167.31.161
163	10.167.31.162/32	10.167.31.162 – 10.167.31.162	10.167.31.162
164	10.167.31.163/32	10.167.31.163 – 10.167.31.163	10.167.31.163
165	10.167.31.164/32	10.167.31.164 – 10.167.31.164	10.167.31.164
166	10.167.31.165/32	10.167.31.165 – 10.167.31.165	10.167.31.165
167	10.167.31.166/32	10.167.31.166 – 10.167.31.166	10.167.31.166
168	10.167.31.167/32	10.167.31.167 – 10.167.31.167	10.167.31.167
169	10.167.31.168/32	10.167.31.168 – 10.167.31.168	10.167.31.168
170	10.167.31.169/32	10.167.31.169 – 10.167.31.169	10.167.31.169
171	10.167.31.170/32	10.167.31.170 – 10.167.31.170	10.167.31.170
172	10.167.31.171/32	10.167.31.171 – 10.167.31.171	10.167.31.171
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174	10.167.31.173/32	10.167.31.173 – 10.167.31.173	10.167.31.173
175	10.167.31.174/32	10.167.31.174 – 10.167.31.174	10.167.31.174
176	10.167.31.175/32	10.167.31.175 – 10.167.31.175	10.167.31.175
177	10.167.31.176/32	10.167.31.176 – 10.167.31.176	10.167.31.176
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179	10.167.31.178/32	10.167.31.178 – 10.167.31.178	10.167.31.178
180	10.167.31.179/32	10.167.31.179 – 10.167.31.179	10.167.31.179
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200	10.167.31.199/32	10.167.31.199 – 10.167.31.199	10.167.31.199
201	10.167.31.200/32	10.167.31.200 – 10.167.31.200	10.167.31.200
202	10.167.31.201/32	10.167.31.201 – 10.167.31.201	10.167.31.201
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207	10.167.31.206/32	10.167.31.206 – 10.167.31.206	10.167.31.206
208	10.167.31.207/32	10.167.31.207 – 10.167.31.207	10.167.31.207
209	10.167.31.208/32	10.167.31.208 – 10.167.31.208	10.167.31.208
210	10.167.31.209/32	10.167.31.209 – 10.167.31.209	10.167.31.209
211	10.167.31.210/32	10.167.31.210 – 10.167.31.210	10.167.31.210
212	10.167.31.211/32	10.167.31.211 – 10.167.31.211	10.167.31.211
213	10.167.31.212/32	10.167.31.212 – 10.167.31.212	10.167.31.212
214	10.167.31.213/32	10.167.31.213 – 10.167.31.213	10.167.31.213
215	10.167.31.214/32	10.167.31.214 – 10.167.31.214	10.167.31.214
216	10.167.31.215/32	10.167.31.215 – 10.167.31.215	10.167.31.215
217	10.167.31.216/32	10.167.31.216 – 10.167.31.216	10.167.31.216
218	10.167.31.217/32	10.167.31.217 – 10.167.31.217	10.167.31.217
219	10.167.31.218/32	10.167.31.218 – 10.167.31.218	10.167.31.218
220	10.167.31.219/32	10.167.31.219 – 10.167.31.219	10.167.31.219
221	10.167.31.220/32	10.167.31.220 – 10.167.31.220	10.167.31.220
222	10.167.31.221/32	10.167.31.221 – 10.167.31.221	10.167.31.221
223	10.167.31.222/32	10.167.31.222 – 10.167.31.222	10.167.31.222
224	10.167.31.223/32	10.167.31.223 – 10.167.31.223	10.167.31.223
225	10.167.31.224/32	10.167.31.224 – 10.167.31.224	10.167.31.224
226	10.167.31.225/32	10.167.31.225 – 10.167.31.225	10.167.31.225
227	10.167.31.226/32	10.167.31.226 – 10.167.31.226	10.167.31.226
228	10.167.31.227/32	10.167.31.227 – 10.167.31.227	10.167.31.227
229	10.167.31.228/32	10.167.31.228 – 10.167.31.228	10.167.31.228
230	10.167.31.229/32	10.167.31.229 – 10.167.31.229	10.167.31.229
231	10.167.31.230/32	10.167.31.230 – 10.167.31.230	10.167.31.230
232	10.167.31.231/32	10.167.31.231 – 10.167.31.231	10.167.31.231
233	10.167.31.232/32	10.167.31.232 – 10.167.31.232	10.167.31.232
234	10.167.31.233/32	10.167.31.233 – 10.167.31.233	10.167.31.233
235	10.167.31.234/32	10.167.31.234 – 10.167.31.234	10.167.31.234
236	10.167.31.235/32	10.167.31.235 – 10.167.31.235	10.167.31.235
237	10.167.31.236/32	10.167.31.236 – 10.167.31.236	10.167.31.236
238	10.167.31.237/32	10.167.31.237 – 10.167.31.237	10.167.31.237
239	10.167.31.238/32	10.167.31.238 – 10.167.31.238	10.167.31.238
240	10.167.31.239/32	10.167.31.239 – 10.167.31.239	10.167.31.239
241	10.167.31.240/32	10.167.31.240 – 10.167.31.240	10.167.31.240
242	10.167.31.241/32	10.167.31.241 – 10.167.31.241	10.167.31.241
243	10.167.31.242/32	10.167.31.242 – 10.167.31.242	10.167.31.242
244	10.167.31.243/32	10.167.31.243 – 10.167.31.243	10.167.31.243
245	10.167.31.244/32	10.167.31.244 – 10.167.31.244	10.167.31.244
246	10.167.31.245/32	10.167.31.245 – 10.167.31.245	10.167.31.245
247	10.167.31.246/32	10.167.31.246 – 10.167.31.246	10.167.31.246
248	10.167.31.247/32	10.167.31.247 – 10.167.31.247	10.167.31.247
249	10.167.31.248/32	10.167.31.248 – 10.167.31.248	10.167.31.248
250	10.167.31.249/32	10.167.31.249 – 10.167.31.249	10.167.31.249
251	10.167.31.250/32	10.167.31.250 – 10.167.31.250	10.167.31.250
252	10.167.31.251/32	10.167.31.251 – 10.167.31.251	10.167.31.251
253	10.167.31.252/32	10.167.31.252 – 10.167.31.252	10.167.31.252
254	10.167.31.253/32	10.167.31.253 – 10.167.31.253	10.167.31.253
255	10.167.31.254/32	10.167.31.254 – 10.167.31.254	10.167.31.254
256	10.167.31.255/32	10.167.31.255 – 10.167.31.255	10.167.31.255

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 →