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)10.167.119.0/25

network10.167.119.0/25

broadcast10.167.119.127

first host10.167.119.1

last host10.167.119.126

subnet mask255.255.255.128

wildcard0.0.0.127

addresses128

usable hosts126

classA

ipcalc 10.167.119.0/25

address00001010.10100111.01110111.00000000

subnet mask11111111.11111111.11111111.10000000

network00001010.10100111.01110111.00000000

broadcast00001010.10100111.01110111.01111111

green = network part, grey = host part

hex0x0aa77700

decimal178747136

reverse dns0.119.167.10.in-addr.arpa

ipv4-mapped::ffff:aa7:7700

/25 split into /32 · 128 subnets

close ×

#	network	host range	broadcast
1	10.167.119.0/32	10.167.119.0 – 10.167.119.0	10.167.119.0
2	10.167.119.1/32	10.167.119.1 – 10.167.119.1	10.167.119.1
3	10.167.119.2/32	10.167.119.2 – 10.167.119.2	10.167.119.2
4	10.167.119.3/32	10.167.119.3 – 10.167.119.3	10.167.119.3
5	10.167.119.4/32	10.167.119.4 – 10.167.119.4	10.167.119.4
6	10.167.119.5/32	10.167.119.5 – 10.167.119.5	10.167.119.5
7	10.167.119.6/32	10.167.119.6 – 10.167.119.6	10.167.119.6
8	10.167.119.7/32	10.167.119.7 – 10.167.119.7	10.167.119.7
9	10.167.119.8/32	10.167.119.8 – 10.167.119.8	10.167.119.8
10	10.167.119.9/32	10.167.119.9 – 10.167.119.9	10.167.119.9
11	10.167.119.10/32	10.167.119.10 – 10.167.119.10	10.167.119.10
12	10.167.119.11/32	10.167.119.11 – 10.167.119.11	10.167.119.11
13	10.167.119.12/32	10.167.119.12 – 10.167.119.12	10.167.119.12
14	10.167.119.13/32	10.167.119.13 – 10.167.119.13	10.167.119.13
15	10.167.119.14/32	10.167.119.14 – 10.167.119.14	10.167.119.14
16	10.167.119.15/32	10.167.119.15 – 10.167.119.15	10.167.119.15
17	10.167.119.16/32	10.167.119.16 – 10.167.119.16	10.167.119.16
18	10.167.119.17/32	10.167.119.17 – 10.167.119.17	10.167.119.17
19	10.167.119.18/32	10.167.119.18 – 10.167.119.18	10.167.119.18
20	10.167.119.19/32	10.167.119.19 – 10.167.119.19	10.167.119.19
21	10.167.119.20/32	10.167.119.20 – 10.167.119.20	10.167.119.20
22	10.167.119.21/32	10.167.119.21 – 10.167.119.21	10.167.119.21
23	10.167.119.22/32	10.167.119.22 – 10.167.119.22	10.167.119.22
24	10.167.119.23/32	10.167.119.23 – 10.167.119.23	10.167.119.23
25	10.167.119.24/32	10.167.119.24 – 10.167.119.24	10.167.119.24
26	10.167.119.25/32	10.167.119.25 – 10.167.119.25	10.167.119.25
27	10.167.119.26/32	10.167.119.26 – 10.167.119.26	10.167.119.26
28	10.167.119.27/32	10.167.119.27 – 10.167.119.27	10.167.119.27
29	10.167.119.28/32	10.167.119.28 – 10.167.119.28	10.167.119.28
30	10.167.119.29/32	10.167.119.29 – 10.167.119.29	10.167.119.29
31	10.167.119.30/32	10.167.119.30 – 10.167.119.30	10.167.119.30
32	10.167.119.31/32	10.167.119.31 – 10.167.119.31	10.167.119.31
33	10.167.119.32/32	10.167.119.32 – 10.167.119.32	10.167.119.32
34	10.167.119.33/32	10.167.119.33 – 10.167.119.33	10.167.119.33
35	10.167.119.34/32	10.167.119.34 – 10.167.119.34	10.167.119.34
36	10.167.119.35/32	10.167.119.35 – 10.167.119.35	10.167.119.35
37	10.167.119.36/32	10.167.119.36 – 10.167.119.36	10.167.119.36
38	10.167.119.37/32	10.167.119.37 – 10.167.119.37	10.167.119.37
39	10.167.119.38/32	10.167.119.38 – 10.167.119.38	10.167.119.38
40	10.167.119.39/32	10.167.119.39 – 10.167.119.39	10.167.119.39
41	10.167.119.40/32	10.167.119.40 – 10.167.119.40	10.167.119.40
42	10.167.119.41/32	10.167.119.41 – 10.167.119.41	10.167.119.41
43	10.167.119.42/32	10.167.119.42 – 10.167.119.42	10.167.119.42
44	10.167.119.43/32	10.167.119.43 – 10.167.119.43	10.167.119.43
45	10.167.119.44/32	10.167.119.44 – 10.167.119.44	10.167.119.44
46	10.167.119.45/32	10.167.119.45 – 10.167.119.45	10.167.119.45
47	10.167.119.46/32	10.167.119.46 – 10.167.119.46	10.167.119.46
48	10.167.119.47/32	10.167.119.47 – 10.167.119.47	10.167.119.47
49	10.167.119.48/32	10.167.119.48 – 10.167.119.48	10.167.119.48
50	10.167.119.49/32	10.167.119.49 – 10.167.119.49	10.167.119.49
51	10.167.119.50/32	10.167.119.50 – 10.167.119.50	10.167.119.50
52	10.167.119.51/32	10.167.119.51 – 10.167.119.51	10.167.119.51
53	10.167.119.52/32	10.167.119.52 – 10.167.119.52	10.167.119.52
54	10.167.119.53/32	10.167.119.53 – 10.167.119.53	10.167.119.53
55	10.167.119.54/32	10.167.119.54 – 10.167.119.54	10.167.119.54
56	10.167.119.55/32	10.167.119.55 – 10.167.119.55	10.167.119.55
57	10.167.119.56/32	10.167.119.56 – 10.167.119.56	10.167.119.56
58	10.167.119.57/32	10.167.119.57 – 10.167.119.57	10.167.119.57
59	10.167.119.58/32	10.167.119.58 – 10.167.119.58	10.167.119.58
60	10.167.119.59/32	10.167.119.59 – 10.167.119.59	10.167.119.59
61	10.167.119.60/32	10.167.119.60 – 10.167.119.60	10.167.119.60
62	10.167.119.61/32	10.167.119.61 – 10.167.119.61	10.167.119.61
63	10.167.119.62/32	10.167.119.62 – 10.167.119.62	10.167.119.62
64	10.167.119.63/32	10.167.119.63 – 10.167.119.63	10.167.119.63
65	10.167.119.64/32	10.167.119.64 – 10.167.119.64	10.167.119.64
66	10.167.119.65/32	10.167.119.65 – 10.167.119.65	10.167.119.65
67	10.167.119.66/32	10.167.119.66 – 10.167.119.66	10.167.119.66
68	10.167.119.67/32	10.167.119.67 – 10.167.119.67	10.167.119.67
69	10.167.119.68/32	10.167.119.68 – 10.167.119.68	10.167.119.68
70	10.167.119.69/32	10.167.119.69 – 10.167.119.69	10.167.119.69
71	10.167.119.70/32	10.167.119.70 – 10.167.119.70	10.167.119.70
72	10.167.119.71/32	10.167.119.71 – 10.167.119.71	10.167.119.71
73	10.167.119.72/32	10.167.119.72 – 10.167.119.72	10.167.119.72
74	10.167.119.73/32	10.167.119.73 – 10.167.119.73	10.167.119.73
75	10.167.119.74/32	10.167.119.74 – 10.167.119.74	10.167.119.74
76	10.167.119.75/32	10.167.119.75 – 10.167.119.75	10.167.119.75
77	10.167.119.76/32	10.167.119.76 – 10.167.119.76	10.167.119.76
78	10.167.119.77/32	10.167.119.77 – 10.167.119.77	10.167.119.77
79	10.167.119.78/32	10.167.119.78 – 10.167.119.78	10.167.119.78
80	10.167.119.79/32	10.167.119.79 – 10.167.119.79	10.167.119.79
81	10.167.119.80/32	10.167.119.80 – 10.167.119.80	10.167.119.80
82	10.167.119.81/32	10.167.119.81 – 10.167.119.81	10.167.119.81
83	10.167.119.82/32	10.167.119.82 – 10.167.119.82	10.167.119.82
84	10.167.119.83/32	10.167.119.83 – 10.167.119.83	10.167.119.83
85	10.167.119.84/32	10.167.119.84 – 10.167.119.84	10.167.119.84
86	10.167.119.85/32	10.167.119.85 – 10.167.119.85	10.167.119.85
87	10.167.119.86/32	10.167.119.86 – 10.167.119.86	10.167.119.86
88	10.167.119.87/32	10.167.119.87 – 10.167.119.87	10.167.119.87
89	10.167.119.88/32	10.167.119.88 – 10.167.119.88	10.167.119.88
90	10.167.119.89/32	10.167.119.89 – 10.167.119.89	10.167.119.89
91	10.167.119.90/32	10.167.119.90 – 10.167.119.90	10.167.119.90
92	10.167.119.91/32	10.167.119.91 – 10.167.119.91	10.167.119.91
93	10.167.119.92/32	10.167.119.92 – 10.167.119.92	10.167.119.92
94	10.167.119.93/32	10.167.119.93 – 10.167.119.93	10.167.119.93
95	10.167.119.94/32	10.167.119.94 – 10.167.119.94	10.167.119.94
96	10.167.119.95/32	10.167.119.95 – 10.167.119.95	10.167.119.95
97	10.167.119.96/32	10.167.119.96 – 10.167.119.96	10.167.119.96
98	10.167.119.97/32	10.167.119.97 – 10.167.119.97	10.167.119.97
99	10.167.119.98/32	10.167.119.98 – 10.167.119.98	10.167.119.98
100	10.167.119.99/32	10.167.119.99 – 10.167.119.99	10.167.119.99
101	10.167.119.100/32	10.167.119.100 – 10.167.119.100	10.167.119.100
102	10.167.119.101/32	10.167.119.101 – 10.167.119.101	10.167.119.101
103	10.167.119.102/32	10.167.119.102 – 10.167.119.102	10.167.119.102
104	10.167.119.103/32	10.167.119.103 – 10.167.119.103	10.167.119.103
105	10.167.119.104/32	10.167.119.104 – 10.167.119.104	10.167.119.104
106	10.167.119.105/32	10.167.119.105 – 10.167.119.105	10.167.119.105
107	10.167.119.106/32	10.167.119.106 – 10.167.119.106	10.167.119.106
108	10.167.119.107/32	10.167.119.107 – 10.167.119.107	10.167.119.107
109	10.167.119.108/32	10.167.119.108 – 10.167.119.108	10.167.119.108
110	10.167.119.109/32	10.167.119.109 – 10.167.119.109	10.167.119.109
111	10.167.119.110/32	10.167.119.110 – 10.167.119.110	10.167.119.110
112	10.167.119.111/32	10.167.119.111 – 10.167.119.111	10.167.119.111
113	10.167.119.112/32	10.167.119.112 – 10.167.119.112	10.167.119.112
114	10.167.119.113/32	10.167.119.113 – 10.167.119.113	10.167.119.113
115	10.167.119.114/32	10.167.119.114 – 10.167.119.114	10.167.119.114
116	10.167.119.115/32	10.167.119.115 – 10.167.119.115	10.167.119.115
117	10.167.119.116/32	10.167.119.116 – 10.167.119.116	10.167.119.116
118	10.167.119.117/32	10.167.119.117 – 10.167.119.117	10.167.119.117
119	10.167.119.118/32	10.167.119.118 – 10.167.119.118	10.167.119.118
120	10.167.119.119/32	10.167.119.119 – 10.167.119.119	10.167.119.119
121	10.167.119.120/32	10.167.119.120 – 10.167.119.120	10.167.119.120
122	10.167.119.121/32	10.167.119.121 – 10.167.119.121	10.167.119.121
123	10.167.119.122/32	10.167.119.122 – 10.167.119.122	10.167.119.122
124	10.167.119.123/32	10.167.119.123 – 10.167.119.123	10.167.119.123
125	10.167.119.124/32	10.167.119.124 – 10.167.119.124	10.167.119.124
126	10.167.119.125/32	10.167.119.125 – 10.167.119.125	10.167.119.125
127	10.167.119.126/32	10.167.119.126 – 10.167.119.126	10.167.119.126
128	10.167.119.127/32	10.167.119.127 – 10.167.119.127	10.167.119.127

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 →