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)10.76.62.0/25

network10.76.62.0/25

broadcast10.76.62.127

first host10.76.62.1

last host10.76.62.126

subnet mask255.255.255.128

wildcard0.0.0.127

addresses128

usable hosts126

classA

ipcalc 10.76.62.0/25

address00001010.01001100.00111110.00000000

subnet mask11111111.11111111.11111111.10000000

network00001010.01001100.00111110.00000000

broadcast00001010.01001100.00111110.01111111

green = network part, grey = host part

hex0x0a4c3e00

decimal172768768

reverse dns0.62.76.10.in-addr.arpa

ipv4-mapped::ffff:a4c:3e00

/25 split into /32 · 128 subnets

close ×

#	network	host range	broadcast
1	10.76.62.0/32	10.76.62.0 – 10.76.62.0	10.76.62.0
2	10.76.62.1/32	10.76.62.1 – 10.76.62.1	10.76.62.1
3	10.76.62.2/32	10.76.62.2 – 10.76.62.2	10.76.62.2
4	10.76.62.3/32	10.76.62.3 – 10.76.62.3	10.76.62.3
5	10.76.62.4/32	10.76.62.4 – 10.76.62.4	10.76.62.4
6	10.76.62.5/32	10.76.62.5 – 10.76.62.5	10.76.62.5
7	10.76.62.6/32	10.76.62.6 – 10.76.62.6	10.76.62.6
8	10.76.62.7/32	10.76.62.7 – 10.76.62.7	10.76.62.7
9	10.76.62.8/32	10.76.62.8 – 10.76.62.8	10.76.62.8
10	10.76.62.9/32	10.76.62.9 – 10.76.62.9	10.76.62.9
11	10.76.62.10/32	10.76.62.10 – 10.76.62.10	10.76.62.10
12	10.76.62.11/32	10.76.62.11 – 10.76.62.11	10.76.62.11
13	10.76.62.12/32	10.76.62.12 – 10.76.62.12	10.76.62.12
14	10.76.62.13/32	10.76.62.13 – 10.76.62.13	10.76.62.13
15	10.76.62.14/32	10.76.62.14 – 10.76.62.14	10.76.62.14
16	10.76.62.15/32	10.76.62.15 – 10.76.62.15	10.76.62.15
17	10.76.62.16/32	10.76.62.16 – 10.76.62.16	10.76.62.16
18	10.76.62.17/32	10.76.62.17 – 10.76.62.17	10.76.62.17
19	10.76.62.18/32	10.76.62.18 – 10.76.62.18	10.76.62.18
20	10.76.62.19/32	10.76.62.19 – 10.76.62.19	10.76.62.19
21	10.76.62.20/32	10.76.62.20 – 10.76.62.20	10.76.62.20
22	10.76.62.21/32	10.76.62.21 – 10.76.62.21	10.76.62.21
23	10.76.62.22/32	10.76.62.22 – 10.76.62.22	10.76.62.22
24	10.76.62.23/32	10.76.62.23 – 10.76.62.23	10.76.62.23
25	10.76.62.24/32	10.76.62.24 – 10.76.62.24	10.76.62.24
26	10.76.62.25/32	10.76.62.25 – 10.76.62.25	10.76.62.25
27	10.76.62.26/32	10.76.62.26 – 10.76.62.26	10.76.62.26
28	10.76.62.27/32	10.76.62.27 – 10.76.62.27	10.76.62.27
29	10.76.62.28/32	10.76.62.28 – 10.76.62.28	10.76.62.28
30	10.76.62.29/32	10.76.62.29 – 10.76.62.29	10.76.62.29
31	10.76.62.30/32	10.76.62.30 – 10.76.62.30	10.76.62.30
32	10.76.62.31/32	10.76.62.31 – 10.76.62.31	10.76.62.31
33	10.76.62.32/32	10.76.62.32 – 10.76.62.32	10.76.62.32
34	10.76.62.33/32	10.76.62.33 – 10.76.62.33	10.76.62.33
35	10.76.62.34/32	10.76.62.34 – 10.76.62.34	10.76.62.34
36	10.76.62.35/32	10.76.62.35 – 10.76.62.35	10.76.62.35
37	10.76.62.36/32	10.76.62.36 – 10.76.62.36	10.76.62.36
38	10.76.62.37/32	10.76.62.37 – 10.76.62.37	10.76.62.37
39	10.76.62.38/32	10.76.62.38 – 10.76.62.38	10.76.62.38
40	10.76.62.39/32	10.76.62.39 – 10.76.62.39	10.76.62.39
41	10.76.62.40/32	10.76.62.40 – 10.76.62.40	10.76.62.40
42	10.76.62.41/32	10.76.62.41 – 10.76.62.41	10.76.62.41
43	10.76.62.42/32	10.76.62.42 – 10.76.62.42	10.76.62.42
44	10.76.62.43/32	10.76.62.43 – 10.76.62.43	10.76.62.43
45	10.76.62.44/32	10.76.62.44 – 10.76.62.44	10.76.62.44
46	10.76.62.45/32	10.76.62.45 – 10.76.62.45	10.76.62.45
47	10.76.62.46/32	10.76.62.46 – 10.76.62.46	10.76.62.46
48	10.76.62.47/32	10.76.62.47 – 10.76.62.47	10.76.62.47
49	10.76.62.48/32	10.76.62.48 – 10.76.62.48	10.76.62.48
50	10.76.62.49/32	10.76.62.49 – 10.76.62.49	10.76.62.49
51	10.76.62.50/32	10.76.62.50 – 10.76.62.50	10.76.62.50
52	10.76.62.51/32	10.76.62.51 – 10.76.62.51	10.76.62.51
53	10.76.62.52/32	10.76.62.52 – 10.76.62.52	10.76.62.52
54	10.76.62.53/32	10.76.62.53 – 10.76.62.53	10.76.62.53
55	10.76.62.54/32	10.76.62.54 – 10.76.62.54	10.76.62.54
56	10.76.62.55/32	10.76.62.55 – 10.76.62.55	10.76.62.55
57	10.76.62.56/32	10.76.62.56 – 10.76.62.56	10.76.62.56
58	10.76.62.57/32	10.76.62.57 – 10.76.62.57	10.76.62.57
59	10.76.62.58/32	10.76.62.58 – 10.76.62.58	10.76.62.58
60	10.76.62.59/32	10.76.62.59 – 10.76.62.59	10.76.62.59
61	10.76.62.60/32	10.76.62.60 – 10.76.62.60	10.76.62.60
62	10.76.62.61/32	10.76.62.61 – 10.76.62.61	10.76.62.61
63	10.76.62.62/32	10.76.62.62 – 10.76.62.62	10.76.62.62
64	10.76.62.63/32	10.76.62.63 – 10.76.62.63	10.76.62.63
65	10.76.62.64/32	10.76.62.64 – 10.76.62.64	10.76.62.64
66	10.76.62.65/32	10.76.62.65 – 10.76.62.65	10.76.62.65
67	10.76.62.66/32	10.76.62.66 – 10.76.62.66	10.76.62.66
68	10.76.62.67/32	10.76.62.67 – 10.76.62.67	10.76.62.67
69	10.76.62.68/32	10.76.62.68 – 10.76.62.68	10.76.62.68
70	10.76.62.69/32	10.76.62.69 – 10.76.62.69	10.76.62.69
71	10.76.62.70/32	10.76.62.70 – 10.76.62.70	10.76.62.70
72	10.76.62.71/32	10.76.62.71 – 10.76.62.71	10.76.62.71
73	10.76.62.72/32	10.76.62.72 – 10.76.62.72	10.76.62.72
74	10.76.62.73/32	10.76.62.73 – 10.76.62.73	10.76.62.73
75	10.76.62.74/32	10.76.62.74 – 10.76.62.74	10.76.62.74
76	10.76.62.75/32	10.76.62.75 – 10.76.62.75	10.76.62.75
77	10.76.62.76/32	10.76.62.76 – 10.76.62.76	10.76.62.76
78	10.76.62.77/32	10.76.62.77 – 10.76.62.77	10.76.62.77
79	10.76.62.78/32	10.76.62.78 – 10.76.62.78	10.76.62.78
80	10.76.62.79/32	10.76.62.79 – 10.76.62.79	10.76.62.79
81	10.76.62.80/32	10.76.62.80 – 10.76.62.80	10.76.62.80
82	10.76.62.81/32	10.76.62.81 – 10.76.62.81	10.76.62.81
83	10.76.62.82/32	10.76.62.82 – 10.76.62.82	10.76.62.82
84	10.76.62.83/32	10.76.62.83 – 10.76.62.83	10.76.62.83
85	10.76.62.84/32	10.76.62.84 – 10.76.62.84	10.76.62.84
86	10.76.62.85/32	10.76.62.85 – 10.76.62.85	10.76.62.85
87	10.76.62.86/32	10.76.62.86 – 10.76.62.86	10.76.62.86
88	10.76.62.87/32	10.76.62.87 – 10.76.62.87	10.76.62.87
89	10.76.62.88/32	10.76.62.88 – 10.76.62.88	10.76.62.88
90	10.76.62.89/32	10.76.62.89 – 10.76.62.89	10.76.62.89
91	10.76.62.90/32	10.76.62.90 – 10.76.62.90	10.76.62.90
92	10.76.62.91/32	10.76.62.91 – 10.76.62.91	10.76.62.91
93	10.76.62.92/32	10.76.62.92 – 10.76.62.92	10.76.62.92
94	10.76.62.93/32	10.76.62.93 – 10.76.62.93	10.76.62.93
95	10.76.62.94/32	10.76.62.94 – 10.76.62.94	10.76.62.94
96	10.76.62.95/32	10.76.62.95 – 10.76.62.95	10.76.62.95
97	10.76.62.96/32	10.76.62.96 – 10.76.62.96	10.76.62.96
98	10.76.62.97/32	10.76.62.97 – 10.76.62.97	10.76.62.97
99	10.76.62.98/32	10.76.62.98 – 10.76.62.98	10.76.62.98
100	10.76.62.99/32	10.76.62.99 – 10.76.62.99	10.76.62.99
101	10.76.62.100/32	10.76.62.100 – 10.76.62.100	10.76.62.100
102	10.76.62.101/32	10.76.62.101 – 10.76.62.101	10.76.62.101
103	10.76.62.102/32	10.76.62.102 – 10.76.62.102	10.76.62.102
104	10.76.62.103/32	10.76.62.103 – 10.76.62.103	10.76.62.103
105	10.76.62.104/32	10.76.62.104 – 10.76.62.104	10.76.62.104
106	10.76.62.105/32	10.76.62.105 – 10.76.62.105	10.76.62.105
107	10.76.62.106/32	10.76.62.106 – 10.76.62.106	10.76.62.106
108	10.76.62.107/32	10.76.62.107 – 10.76.62.107	10.76.62.107
109	10.76.62.108/32	10.76.62.108 – 10.76.62.108	10.76.62.108
110	10.76.62.109/32	10.76.62.109 – 10.76.62.109	10.76.62.109
111	10.76.62.110/32	10.76.62.110 – 10.76.62.110	10.76.62.110
112	10.76.62.111/32	10.76.62.111 – 10.76.62.111	10.76.62.111
113	10.76.62.112/32	10.76.62.112 – 10.76.62.112	10.76.62.112
114	10.76.62.113/32	10.76.62.113 – 10.76.62.113	10.76.62.113
115	10.76.62.114/32	10.76.62.114 – 10.76.62.114	10.76.62.114
116	10.76.62.115/32	10.76.62.115 – 10.76.62.115	10.76.62.115
117	10.76.62.116/32	10.76.62.116 – 10.76.62.116	10.76.62.116
118	10.76.62.117/32	10.76.62.117 – 10.76.62.117	10.76.62.117
119	10.76.62.118/32	10.76.62.118 – 10.76.62.118	10.76.62.118
120	10.76.62.119/32	10.76.62.119 – 10.76.62.119	10.76.62.119
121	10.76.62.120/32	10.76.62.120 – 10.76.62.120	10.76.62.120
122	10.76.62.121/32	10.76.62.121 – 10.76.62.121	10.76.62.121
123	10.76.62.122/32	10.76.62.122 – 10.76.62.122	10.76.62.122
124	10.76.62.123/32	10.76.62.123 – 10.76.62.123	10.76.62.123
125	10.76.62.124/32	10.76.62.124 – 10.76.62.124	10.76.62.124
126	10.76.62.125/32	10.76.62.125 – 10.76.62.125	10.76.62.125
127	10.76.62.126/32	10.76.62.126 – 10.76.62.126	10.76.62.126
128	10.76.62.127/32	10.76.62.127 – 10.76.62.127	10.76.62.127

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 →