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)10.167.14.0/25

network10.167.14.0/25

broadcast10.167.14.127

first host10.167.14.1

last host10.167.14.126

subnet mask255.255.255.128

wildcard0.0.0.127

addresses128

usable hosts126

classA

ipcalc 10.167.14.0/25

address00001010.10100111.00001110.00000000

subnet mask11111111.11111111.11111111.10000000

network00001010.10100111.00001110.00000000

broadcast00001010.10100111.00001110.01111111

green = network part, grey = host part

hex0x0aa70e00

decimal178720256

reverse dns0.14.167.10.in-addr.arpa

ipv4-mapped::ffff:aa7:e00

/25 split into /32 · 128 subnets

close ×

#	network	host range	broadcast
1	10.167.14.0/32	10.167.14.0 – 10.167.14.0	10.167.14.0
2	10.167.14.1/32	10.167.14.1 – 10.167.14.1	10.167.14.1
3	10.167.14.2/32	10.167.14.2 – 10.167.14.2	10.167.14.2
4	10.167.14.3/32	10.167.14.3 – 10.167.14.3	10.167.14.3
5	10.167.14.4/32	10.167.14.4 – 10.167.14.4	10.167.14.4
6	10.167.14.5/32	10.167.14.5 – 10.167.14.5	10.167.14.5
7	10.167.14.6/32	10.167.14.6 – 10.167.14.6	10.167.14.6
8	10.167.14.7/32	10.167.14.7 – 10.167.14.7	10.167.14.7
9	10.167.14.8/32	10.167.14.8 – 10.167.14.8	10.167.14.8
10	10.167.14.9/32	10.167.14.9 – 10.167.14.9	10.167.14.9
11	10.167.14.10/32	10.167.14.10 – 10.167.14.10	10.167.14.10
12	10.167.14.11/32	10.167.14.11 – 10.167.14.11	10.167.14.11
13	10.167.14.12/32	10.167.14.12 – 10.167.14.12	10.167.14.12
14	10.167.14.13/32	10.167.14.13 – 10.167.14.13	10.167.14.13
15	10.167.14.14/32	10.167.14.14 – 10.167.14.14	10.167.14.14
16	10.167.14.15/32	10.167.14.15 – 10.167.14.15	10.167.14.15
17	10.167.14.16/32	10.167.14.16 – 10.167.14.16	10.167.14.16
18	10.167.14.17/32	10.167.14.17 – 10.167.14.17	10.167.14.17
19	10.167.14.18/32	10.167.14.18 – 10.167.14.18	10.167.14.18
20	10.167.14.19/32	10.167.14.19 – 10.167.14.19	10.167.14.19
21	10.167.14.20/32	10.167.14.20 – 10.167.14.20	10.167.14.20
22	10.167.14.21/32	10.167.14.21 – 10.167.14.21	10.167.14.21
23	10.167.14.22/32	10.167.14.22 – 10.167.14.22	10.167.14.22
24	10.167.14.23/32	10.167.14.23 – 10.167.14.23	10.167.14.23
25	10.167.14.24/32	10.167.14.24 – 10.167.14.24	10.167.14.24
26	10.167.14.25/32	10.167.14.25 – 10.167.14.25	10.167.14.25
27	10.167.14.26/32	10.167.14.26 – 10.167.14.26	10.167.14.26
28	10.167.14.27/32	10.167.14.27 – 10.167.14.27	10.167.14.27
29	10.167.14.28/32	10.167.14.28 – 10.167.14.28	10.167.14.28
30	10.167.14.29/32	10.167.14.29 – 10.167.14.29	10.167.14.29
31	10.167.14.30/32	10.167.14.30 – 10.167.14.30	10.167.14.30
32	10.167.14.31/32	10.167.14.31 – 10.167.14.31	10.167.14.31
33	10.167.14.32/32	10.167.14.32 – 10.167.14.32	10.167.14.32
34	10.167.14.33/32	10.167.14.33 – 10.167.14.33	10.167.14.33
35	10.167.14.34/32	10.167.14.34 – 10.167.14.34	10.167.14.34
36	10.167.14.35/32	10.167.14.35 – 10.167.14.35	10.167.14.35
37	10.167.14.36/32	10.167.14.36 – 10.167.14.36	10.167.14.36
38	10.167.14.37/32	10.167.14.37 – 10.167.14.37	10.167.14.37
39	10.167.14.38/32	10.167.14.38 – 10.167.14.38	10.167.14.38
40	10.167.14.39/32	10.167.14.39 – 10.167.14.39	10.167.14.39
41	10.167.14.40/32	10.167.14.40 – 10.167.14.40	10.167.14.40
42	10.167.14.41/32	10.167.14.41 – 10.167.14.41	10.167.14.41
43	10.167.14.42/32	10.167.14.42 – 10.167.14.42	10.167.14.42
44	10.167.14.43/32	10.167.14.43 – 10.167.14.43	10.167.14.43
45	10.167.14.44/32	10.167.14.44 – 10.167.14.44	10.167.14.44
46	10.167.14.45/32	10.167.14.45 – 10.167.14.45	10.167.14.45
47	10.167.14.46/32	10.167.14.46 – 10.167.14.46	10.167.14.46
48	10.167.14.47/32	10.167.14.47 – 10.167.14.47	10.167.14.47
49	10.167.14.48/32	10.167.14.48 – 10.167.14.48	10.167.14.48
50	10.167.14.49/32	10.167.14.49 – 10.167.14.49	10.167.14.49
51	10.167.14.50/32	10.167.14.50 – 10.167.14.50	10.167.14.50
52	10.167.14.51/32	10.167.14.51 – 10.167.14.51	10.167.14.51
53	10.167.14.52/32	10.167.14.52 – 10.167.14.52	10.167.14.52
54	10.167.14.53/32	10.167.14.53 – 10.167.14.53	10.167.14.53
55	10.167.14.54/32	10.167.14.54 – 10.167.14.54	10.167.14.54
56	10.167.14.55/32	10.167.14.55 – 10.167.14.55	10.167.14.55
57	10.167.14.56/32	10.167.14.56 – 10.167.14.56	10.167.14.56
58	10.167.14.57/32	10.167.14.57 – 10.167.14.57	10.167.14.57
59	10.167.14.58/32	10.167.14.58 – 10.167.14.58	10.167.14.58
60	10.167.14.59/32	10.167.14.59 – 10.167.14.59	10.167.14.59
61	10.167.14.60/32	10.167.14.60 – 10.167.14.60	10.167.14.60
62	10.167.14.61/32	10.167.14.61 – 10.167.14.61	10.167.14.61
63	10.167.14.62/32	10.167.14.62 – 10.167.14.62	10.167.14.62
64	10.167.14.63/32	10.167.14.63 – 10.167.14.63	10.167.14.63
65	10.167.14.64/32	10.167.14.64 – 10.167.14.64	10.167.14.64
66	10.167.14.65/32	10.167.14.65 – 10.167.14.65	10.167.14.65
67	10.167.14.66/32	10.167.14.66 – 10.167.14.66	10.167.14.66
68	10.167.14.67/32	10.167.14.67 – 10.167.14.67	10.167.14.67
69	10.167.14.68/32	10.167.14.68 – 10.167.14.68	10.167.14.68
70	10.167.14.69/32	10.167.14.69 – 10.167.14.69	10.167.14.69
71	10.167.14.70/32	10.167.14.70 – 10.167.14.70	10.167.14.70
72	10.167.14.71/32	10.167.14.71 – 10.167.14.71	10.167.14.71
73	10.167.14.72/32	10.167.14.72 – 10.167.14.72	10.167.14.72
74	10.167.14.73/32	10.167.14.73 – 10.167.14.73	10.167.14.73
75	10.167.14.74/32	10.167.14.74 – 10.167.14.74	10.167.14.74
76	10.167.14.75/32	10.167.14.75 – 10.167.14.75	10.167.14.75
77	10.167.14.76/32	10.167.14.76 – 10.167.14.76	10.167.14.76
78	10.167.14.77/32	10.167.14.77 – 10.167.14.77	10.167.14.77
79	10.167.14.78/32	10.167.14.78 – 10.167.14.78	10.167.14.78
80	10.167.14.79/32	10.167.14.79 – 10.167.14.79	10.167.14.79
81	10.167.14.80/32	10.167.14.80 – 10.167.14.80	10.167.14.80
82	10.167.14.81/32	10.167.14.81 – 10.167.14.81	10.167.14.81
83	10.167.14.82/32	10.167.14.82 – 10.167.14.82	10.167.14.82
84	10.167.14.83/32	10.167.14.83 – 10.167.14.83	10.167.14.83
85	10.167.14.84/32	10.167.14.84 – 10.167.14.84	10.167.14.84
86	10.167.14.85/32	10.167.14.85 – 10.167.14.85	10.167.14.85
87	10.167.14.86/32	10.167.14.86 – 10.167.14.86	10.167.14.86
88	10.167.14.87/32	10.167.14.87 – 10.167.14.87	10.167.14.87
89	10.167.14.88/32	10.167.14.88 – 10.167.14.88	10.167.14.88
90	10.167.14.89/32	10.167.14.89 – 10.167.14.89	10.167.14.89
91	10.167.14.90/32	10.167.14.90 – 10.167.14.90	10.167.14.90
92	10.167.14.91/32	10.167.14.91 – 10.167.14.91	10.167.14.91
93	10.167.14.92/32	10.167.14.92 – 10.167.14.92	10.167.14.92
94	10.167.14.93/32	10.167.14.93 – 10.167.14.93	10.167.14.93
95	10.167.14.94/32	10.167.14.94 – 10.167.14.94	10.167.14.94
96	10.167.14.95/32	10.167.14.95 – 10.167.14.95	10.167.14.95
97	10.167.14.96/32	10.167.14.96 – 10.167.14.96	10.167.14.96
98	10.167.14.97/32	10.167.14.97 – 10.167.14.97	10.167.14.97
99	10.167.14.98/32	10.167.14.98 – 10.167.14.98	10.167.14.98
100	10.167.14.99/32	10.167.14.99 – 10.167.14.99	10.167.14.99
101	10.167.14.100/32	10.167.14.100 – 10.167.14.100	10.167.14.100
102	10.167.14.101/32	10.167.14.101 – 10.167.14.101	10.167.14.101
103	10.167.14.102/32	10.167.14.102 – 10.167.14.102	10.167.14.102
104	10.167.14.103/32	10.167.14.103 – 10.167.14.103	10.167.14.103
105	10.167.14.104/32	10.167.14.104 – 10.167.14.104	10.167.14.104
106	10.167.14.105/32	10.167.14.105 – 10.167.14.105	10.167.14.105
107	10.167.14.106/32	10.167.14.106 – 10.167.14.106	10.167.14.106
108	10.167.14.107/32	10.167.14.107 – 10.167.14.107	10.167.14.107
109	10.167.14.108/32	10.167.14.108 – 10.167.14.108	10.167.14.108
110	10.167.14.109/32	10.167.14.109 – 10.167.14.109	10.167.14.109
111	10.167.14.110/32	10.167.14.110 – 10.167.14.110	10.167.14.110
112	10.167.14.111/32	10.167.14.111 – 10.167.14.111	10.167.14.111
113	10.167.14.112/32	10.167.14.112 – 10.167.14.112	10.167.14.112
114	10.167.14.113/32	10.167.14.113 – 10.167.14.113	10.167.14.113
115	10.167.14.114/32	10.167.14.114 – 10.167.14.114	10.167.14.114
116	10.167.14.115/32	10.167.14.115 – 10.167.14.115	10.167.14.115
117	10.167.14.116/32	10.167.14.116 – 10.167.14.116	10.167.14.116
118	10.167.14.117/32	10.167.14.117 – 10.167.14.117	10.167.14.117
119	10.167.14.118/32	10.167.14.118 – 10.167.14.118	10.167.14.118
120	10.167.14.119/32	10.167.14.119 – 10.167.14.119	10.167.14.119
121	10.167.14.120/32	10.167.14.120 – 10.167.14.120	10.167.14.120
122	10.167.14.121/32	10.167.14.121 – 10.167.14.121	10.167.14.121
123	10.167.14.122/32	10.167.14.122 – 10.167.14.122	10.167.14.122
124	10.167.14.123/32	10.167.14.123 – 10.167.14.123	10.167.14.123
125	10.167.14.124/32	10.167.14.124 – 10.167.14.124	10.167.14.124
126	10.167.14.125/32	10.167.14.125 – 10.167.14.125	10.167.14.125
127	10.167.14.126/32	10.167.14.126 – 10.167.14.126	10.167.14.126
128	10.167.14.127/32	10.167.14.127 – 10.167.14.127	10.167.14.127

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 /25
/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	-
/25	255.255.255.128	128	126	1
/26	255.255.255.192	64	62	2 split →
/27	255.255.255.224	32	30	4 split →
/28	255.255.255.240	16	14	8 split →
/29	255.255.255.248	8	6	16 split →
/30	255.255.255.252	4	2	32 split →
/31	255.255.255.254	2	2	64 split →
/32	255.255.255.255	1	1	128 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 →