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)10.167.114.0/25

network10.167.114.0/25

broadcast10.167.114.127

first host10.167.114.1

last host10.167.114.126

subnet mask255.255.255.128

wildcard0.0.0.127

addresses128

usable hosts126

classA

ipcalc 10.167.114.0/25

address00001010.10100111.01110010.00000000

subnet mask11111111.11111111.11111111.10000000

network00001010.10100111.01110010.00000000

broadcast00001010.10100111.01110010.01111111

green = network part, grey = host part

hex0x0aa77200

decimal178745856

reverse dns0.114.167.10.in-addr.arpa

ipv4-mapped::ffff:aa7:7200

/25 split into /32 · 128 subnets

close ×

#	network	host range	broadcast
1	10.167.114.0/32	10.167.114.0 – 10.167.114.0	10.167.114.0
2	10.167.114.1/32	10.167.114.1 – 10.167.114.1	10.167.114.1
3	10.167.114.2/32	10.167.114.2 – 10.167.114.2	10.167.114.2
4	10.167.114.3/32	10.167.114.3 – 10.167.114.3	10.167.114.3
5	10.167.114.4/32	10.167.114.4 – 10.167.114.4	10.167.114.4
6	10.167.114.5/32	10.167.114.5 – 10.167.114.5	10.167.114.5
7	10.167.114.6/32	10.167.114.6 – 10.167.114.6	10.167.114.6
8	10.167.114.7/32	10.167.114.7 – 10.167.114.7	10.167.114.7
9	10.167.114.8/32	10.167.114.8 – 10.167.114.8	10.167.114.8
10	10.167.114.9/32	10.167.114.9 – 10.167.114.9	10.167.114.9
11	10.167.114.10/32	10.167.114.10 – 10.167.114.10	10.167.114.10
12	10.167.114.11/32	10.167.114.11 – 10.167.114.11	10.167.114.11
13	10.167.114.12/32	10.167.114.12 – 10.167.114.12	10.167.114.12
14	10.167.114.13/32	10.167.114.13 – 10.167.114.13	10.167.114.13
15	10.167.114.14/32	10.167.114.14 – 10.167.114.14	10.167.114.14
16	10.167.114.15/32	10.167.114.15 – 10.167.114.15	10.167.114.15
17	10.167.114.16/32	10.167.114.16 – 10.167.114.16	10.167.114.16
18	10.167.114.17/32	10.167.114.17 – 10.167.114.17	10.167.114.17
19	10.167.114.18/32	10.167.114.18 – 10.167.114.18	10.167.114.18
20	10.167.114.19/32	10.167.114.19 – 10.167.114.19	10.167.114.19
21	10.167.114.20/32	10.167.114.20 – 10.167.114.20	10.167.114.20
22	10.167.114.21/32	10.167.114.21 – 10.167.114.21	10.167.114.21
23	10.167.114.22/32	10.167.114.22 – 10.167.114.22	10.167.114.22
24	10.167.114.23/32	10.167.114.23 – 10.167.114.23	10.167.114.23
25	10.167.114.24/32	10.167.114.24 – 10.167.114.24	10.167.114.24
26	10.167.114.25/32	10.167.114.25 – 10.167.114.25	10.167.114.25
27	10.167.114.26/32	10.167.114.26 – 10.167.114.26	10.167.114.26
28	10.167.114.27/32	10.167.114.27 – 10.167.114.27	10.167.114.27
29	10.167.114.28/32	10.167.114.28 – 10.167.114.28	10.167.114.28
30	10.167.114.29/32	10.167.114.29 – 10.167.114.29	10.167.114.29
31	10.167.114.30/32	10.167.114.30 – 10.167.114.30	10.167.114.30
32	10.167.114.31/32	10.167.114.31 – 10.167.114.31	10.167.114.31
33	10.167.114.32/32	10.167.114.32 – 10.167.114.32	10.167.114.32
34	10.167.114.33/32	10.167.114.33 – 10.167.114.33	10.167.114.33
35	10.167.114.34/32	10.167.114.34 – 10.167.114.34	10.167.114.34
36	10.167.114.35/32	10.167.114.35 – 10.167.114.35	10.167.114.35
37	10.167.114.36/32	10.167.114.36 – 10.167.114.36	10.167.114.36
38	10.167.114.37/32	10.167.114.37 – 10.167.114.37	10.167.114.37
39	10.167.114.38/32	10.167.114.38 – 10.167.114.38	10.167.114.38
40	10.167.114.39/32	10.167.114.39 – 10.167.114.39	10.167.114.39
41	10.167.114.40/32	10.167.114.40 – 10.167.114.40	10.167.114.40
42	10.167.114.41/32	10.167.114.41 – 10.167.114.41	10.167.114.41
43	10.167.114.42/32	10.167.114.42 – 10.167.114.42	10.167.114.42
44	10.167.114.43/32	10.167.114.43 – 10.167.114.43	10.167.114.43
45	10.167.114.44/32	10.167.114.44 – 10.167.114.44	10.167.114.44
46	10.167.114.45/32	10.167.114.45 – 10.167.114.45	10.167.114.45
47	10.167.114.46/32	10.167.114.46 – 10.167.114.46	10.167.114.46
48	10.167.114.47/32	10.167.114.47 – 10.167.114.47	10.167.114.47
49	10.167.114.48/32	10.167.114.48 – 10.167.114.48	10.167.114.48
50	10.167.114.49/32	10.167.114.49 – 10.167.114.49	10.167.114.49
51	10.167.114.50/32	10.167.114.50 – 10.167.114.50	10.167.114.50
52	10.167.114.51/32	10.167.114.51 – 10.167.114.51	10.167.114.51
53	10.167.114.52/32	10.167.114.52 – 10.167.114.52	10.167.114.52
54	10.167.114.53/32	10.167.114.53 – 10.167.114.53	10.167.114.53
55	10.167.114.54/32	10.167.114.54 – 10.167.114.54	10.167.114.54
56	10.167.114.55/32	10.167.114.55 – 10.167.114.55	10.167.114.55
57	10.167.114.56/32	10.167.114.56 – 10.167.114.56	10.167.114.56
58	10.167.114.57/32	10.167.114.57 – 10.167.114.57	10.167.114.57
59	10.167.114.58/32	10.167.114.58 – 10.167.114.58	10.167.114.58
60	10.167.114.59/32	10.167.114.59 – 10.167.114.59	10.167.114.59
61	10.167.114.60/32	10.167.114.60 – 10.167.114.60	10.167.114.60
62	10.167.114.61/32	10.167.114.61 – 10.167.114.61	10.167.114.61
63	10.167.114.62/32	10.167.114.62 – 10.167.114.62	10.167.114.62
64	10.167.114.63/32	10.167.114.63 – 10.167.114.63	10.167.114.63
65	10.167.114.64/32	10.167.114.64 – 10.167.114.64	10.167.114.64
66	10.167.114.65/32	10.167.114.65 – 10.167.114.65	10.167.114.65
67	10.167.114.66/32	10.167.114.66 – 10.167.114.66	10.167.114.66
68	10.167.114.67/32	10.167.114.67 – 10.167.114.67	10.167.114.67
69	10.167.114.68/32	10.167.114.68 – 10.167.114.68	10.167.114.68
70	10.167.114.69/32	10.167.114.69 – 10.167.114.69	10.167.114.69
71	10.167.114.70/32	10.167.114.70 – 10.167.114.70	10.167.114.70
72	10.167.114.71/32	10.167.114.71 – 10.167.114.71	10.167.114.71
73	10.167.114.72/32	10.167.114.72 – 10.167.114.72	10.167.114.72
74	10.167.114.73/32	10.167.114.73 – 10.167.114.73	10.167.114.73
75	10.167.114.74/32	10.167.114.74 – 10.167.114.74	10.167.114.74
76	10.167.114.75/32	10.167.114.75 – 10.167.114.75	10.167.114.75
77	10.167.114.76/32	10.167.114.76 – 10.167.114.76	10.167.114.76
78	10.167.114.77/32	10.167.114.77 – 10.167.114.77	10.167.114.77
79	10.167.114.78/32	10.167.114.78 – 10.167.114.78	10.167.114.78
80	10.167.114.79/32	10.167.114.79 – 10.167.114.79	10.167.114.79
81	10.167.114.80/32	10.167.114.80 – 10.167.114.80	10.167.114.80
82	10.167.114.81/32	10.167.114.81 – 10.167.114.81	10.167.114.81
83	10.167.114.82/32	10.167.114.82 – 10.167.114.82	10.167.114.82
84	10.167.114.83/32	10.167.114.83 – 10.167.114.83	10.167.114.83
85	10.167.114.84/32	10.167.114.84 – 10.167.114.84	10.167.114.84
86	10.167.114.85/32	10.167.114.85 – 10.167.114.85	10.167.114.85
87	10.167.114.86/32	10.167.114.86 – 10.167.114.86	10.167.114.86
88	10.167.114.87/32	10.167.114.87 – 10.167.114.87	10.167.114.87
89	10.167.114.88/32	10.167.114.88 – 10.167.114.88	10.167.114.88
90	10.167.114.89/32	10.167.114.89 – 10.167.114.89	10.167.114.89
91	10.167.114.90/32	10.167.114.90 – 10.167.114.90	10.167.114.90
92	10.167.114.91/32	10.167.114.91 – 10.167.114.91	10.167.114.91
93	10.167.114.92/32	10.167.114.92 – 10.167.114.92	10.167.114.92
94	10.167.114.93/32	10.167.114.93 – 10.167.114.93	10.167.114.93
95	10.167.114.94/32	10.167.114.94 – 10.167.114.94	10.167.114.94
96	10.167.114.95/32	10.167.114.95 – 10.167.114.95	10.167.114.95
97	10.167.114.96/32	10.167.114.96 – 10.167.114.96	10.167.114.96
98	10.167.114.97/32	10.167.114.97 – 10.167.114.97	10.167.114.97
99	10.167.114.98/32	10.167.114.98 – 10.167.114.98	10.167.114.98
100	10.167.114.99/32	10.167.114.99 – 10.167.114.99	10.167.114.99
101	10.167.114.100/32	10.167.114.100 – 10.167.114.100	10.167.114.100
102	10.167.114.101/32	10.167.114.101 – 10.167.114.101	10.167.114.101
103	10.167.114.102/32	10.167.114.102 – 10.167.114.102	10.167.114.102
104	10.167.114.103/32	10.167.114.103 – 10.167.114.103	10.167.114.103
105	10.167.114.104/32	10.167.114.104 – 10.167.114.104	10.167.114.104
106	10.167.114.105/32	10.167.114.105 – 10.167.114.105	10.167.114.105
107	10.167.114.106/32	10.167.114.106 – 10.167.114.106	10.167.114.106
108	10.167.114.107/32	10.167.114.107 – 10.167.114.107	10.167.114.107
109	10.167.114.108/32	10.167.114.108 – 10.167.114.108	10.167.114.108
110	10.167.114.109/32	10.167.114.109 – 10.167.114.109	10.167.114.109
111	10.167.114.110/32	10.167.114.110 – 10.167.114.110	10.167.114.110
112	10.167.114.111/32	10.167.114.111 – 10.167.114.111	10.167.114.111
113	10.167.114.112/32	10.167.114.112 – 10.167.114.112	10.167.114.112
114	10.167.114.113/32	10.167.114.113 – 10.167.114.113	10.167.114.113
115	10.167.114.114/32	10.167.114.114 – 10.167.114.114	10.167.114.114
116	10.167.114.115/32	10.167.114.115 – 10.167.114.115	10.167.114.115
117	10.167.114.116/32	10.167.114.116 – 10.167.114.116	10.167.114.116
118	10.167.114.117/32	10.167.114.117 – 10.167.114.117	10.167.114.117
119	10.167.114.118/32	10.167.114.118 – 10.167.114.118	10.167.114.118
120	10.167.114.119/32	10.167.114.119 – 10.167.114.119	10.167.114.119
121	10.167.114.120/32	10.167.114.120 – 10.167.114.120	10.167.114.120
122	10.167.114.121/32	10.167.114.121 – 10.167.114.121	10.167.114.121
123	10.167.114.122/32	10.167.114.122 – 10.167.114.122	10.167.114.122
124	10.167.114.123/32	10.167.114.123 – 10.167.114.123	10.167.114.123
125	10.167.114.124/32	10.167.114.124 – 10.167.114.124	10.167.114.124
126	10.167.114.125/32	10.167.114.125 – 10.167.114.125	10.167.114.125
127	10.167.114.126/32	10.167.114.126 – 10.167.114.126	10.167.114.126
128	10.167.114.127/32	10.167.114.127 – 10.167.114.127	10.167.114.127

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 →