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)10.76.96.0/25

network10.76.96.0/25

broadcast10.76.96.127

first host10.76.96.1

last host10.76.96.126

subnet mask255.255.255.128

wildcard0.0.0.127

addresses128

usable hosts126

classA

ipcalc 10.76.96.0/25

address00001010.01001100.01100000.00000000

subnet mask11111111.11111111.11111111.10000000

network00001010.01001100.01100000.00000000

broadcast00001010.01001100.01100000.01111111

green = network part, grey = host part

hex0x0a4c6000

decimal172777472

reverse dns0.96.76.10.in-addr.arpa

ipv4-mapped::ffff:a4c:6000

/25 split into /32 · 128 subnets

close ×

#	network	host range	broadcast
1	10.76.96.0/32	10.76.96.0 – 10.76.96.0	10.76.96.0
2	10.76.96.1/32	10.76.96.1 – 10.76.96.1	10.76.96.1
3	10.76.96.2/32	10.76.96.2 – 10.76.96.2	10.76.96.2
4	10.76.96.3/32	10.76.96.3 – 10.76.96.3	10.76.96.3
5	10.76.96.4/32	10.76.96.4 – 10.76.96.4	10.76.96.4
6	10.76.96.5/32	10.76.96.5 – 10.76.96.5	10.76.96.5
7	10.76.96.6/32	10.76.96.6 – 10.76.96.6	10.76.96.6
8	10.76.96.7/32	10.76.96.7 – 10.76.96.7	10.76.96.7
9	10.76.96.8/32	10.76.96.8 – 10.76.96.8	10.76.96.8
10	10.76.96.9/32	10.76.96.9 – 10.76.96.9	10.76.96.9
11	10.76.96.10/32	10.76.96.10 – 10.76.96.10	10.76.96.10
12	10.76.96.11/32	10.76.96.11 – 10.76.96.11	10.76.96.11
13	10.76.96.12/32	10.76.96.12 – 10.76.96.12	10.76.96.12
14	10.76.96.13/32	10.76.96.13 – 10.76.96.13	10.76.96.13
15	10.76.96.14/32	10.76.96.14 – 10.76.96.14	10.76.96.14
16	10.76.96.15/32	10.76.96.15 – 10.76.96.15	10.76.96.15
17	10.76.96.16/32	10.76.96.16 – 10.76.96.16	10.76.96.16
18	10.76.96.17/32	10.76.96.17 – 10.76.96.17	10.76.96.17
19	10.76.96.18/32	10.76.96.18 – 10.76.96.18	10.76.96.18
20	10.76.96.19/32	10.76.96.19 – 10.76.96.19	10.76.96.19
21	10.76.96.20/32	10.76.96.20 – 10.76.96.20	10.76.96.20
22	10.76.96.21/32	10.76.96.21 – 10.76.96.21	10.76.96.21
23	10.76.96.22/32	10.76.96.22 – 10.76.96.22	10.76.96.22
24	10.76.96.23/32	10.76.96.23 – 10.76.96.23	10.76.96.23
25	10.76.96.24/32	10.76.96.24 – 10.76.96.24	10.76.96.24
26	10.76.96.25/32	10.76.96.25 – 10.76.96.25	10.76.96.25
27	10.76.96.26/32	10.76.96.26 – 10.76.96.26	10.76.96.26
28	10.76.96.27/32	10.76.96.27 – 10.76.96.27	10.76.96.27
29	10.76.96.28/32	10.76.96.28 – 10.76.96.28	10.76.96.28
30	10.76.96.29/32	10.76.96.29 – 10.76.96.29	10.76.96.29
31	10.76.96.30/32	10.76.96.30 – 10.76.96.30	10.76.96.30
32	10.76.96.31/32	10.76.96.31 – 10.76.96.31	10.76.96.31
33	10.76.96.32/32	10.76.96.32 – 10.76.96.32	10.76.96.32
34	10.76.96.33/32	10.76.96.33 – 10.76.96.33	10.76.96.33
35	10.76.96.34/32	10.76.96.34 – 10.76.96.34	10.76.96.34
36	10.76.96.35/32	10.76.96.35 – 10.76.96.35	10.76.96.35
37	10.76.96.36/32	10.76.96.36 – 10.76.96.36	10.76.96.36
38	10.76.96.37/32	10.76.96.37 – 10.76.96.37	10.76.96.37
39	10.76.96.38/32	10.76.96.38 – 10.76.96.38	10.76.96.38
40	10.76.96.39/32	10.76.96.39 – 10.76.96.39	10.76.96.39
41	10.76.96.40/32	10.76.96.40 – 10.76.96.40	10.76.96.40
42	10.76.96.41/32	10.76.96.41 – 10.76.96.41	10.76.96.41
43	10.76.96.42/32	10.76.96.42 – 10.76.96.42	10.76.96.42
44	10.76.96.43/32	10.76.96.43 – 10.76.96.43	10.76.96.43
45	10.76.96.44/32	10.76.96.44 – 10.76.96.44	10.76.96.44
46	10.76.96.45/32	10.76.96.45 – 10.76.96.45	10.76.96.45
47	10.76.96.46/32	10.76.96.46 – 10.76.96.46	10.76.96.46
48	10.76.96.47/32	10.76.96.47 – 10.76.96.47	10.76.96.47
49	10.76.96.48/32	10.76.96.48 – 10.76.96.48	10.76.96.48
50	10.76.96.49/32	10.76.96.49 – 10.76.96.49	10.76.96.49
51	10.76.96.50/32	10.76.96.50 – 10.76.96.50	10.76.96.50
52	10.76.96.51/32	10.76.96.51 – 10.76.96.51	10.76.96.51
53	10.76.96.52/32	10.76.96.52 – 10.76.96.52	10.76.96.52
54	10.76.96.53/32	10.76.96.53 – 10.76.96.53	10.76.96.53
55	10.76.96.54/32	10.76.96.54 – 10.76.96.54	10.76.96.54
56	10.76.96.55/32	10.76.96.55 – 10.76.96.55	10.76.96.55
57	10.76.96.56/32	10.76.96.56 – 10.76.96.56	10.76.96.56
58	10.76.96.57/32	10.76.96.57 – 10.76.96.57	10.76.96.57
59	10.76.96.58/32	10.76.96.58 – 10.76.96.58	10.76.96.58
60	10.76.96.59/32	10.76.96.59 – 10.76.96.59	10.76.96.59
61	10.76.96.60/32	10.76.96.60 – 10.76.96.60	10.76.96.60
62	10.76.96.61/32	10.76.96.61 – 10.76.96.61	10.76.96.61
63	10.76.96.62/32	10.76.96.62 – 10.76.96.62	10.76.96.62
64	10.76.96.63/32	10.76.96.63 – 10.76.96.63	10.76.96.63
65	10.76.96.64/32	10.76.96.64 – 10.76.96.64	10.76.96.64
66	10.76.96.65/32	10.76.96.65 – 10.76.96.65	10.76.96.65
67	10.76.96.66/32	10.76.96.66 – 10.76.96.66	10.76.96.66
68	10.76.96.67/32	10.76.96.67 – 10.76.96.67	10.76.96.67
69	10.76.96.68/32	10.76.96.68 – 10.76.96.68	10.76.96.68
70	10.76.96.69/32	10.76.96.69 – 10.76.96.69	10.76.96.69
71	10.76.96.70/32	10.76.96.70 – 10.76.96.70	10.76.96.70
72	10.76.96.71/32	10.76.96.71 – 10.76.96.71	10.76.96.71
73	10.76.96.72/32	10.76.96.72 – 10.76.96.72	10.76.96.72
74	10.76.96.73/32	10.76.96.73 – 10.76.96.73	10.76.96.73
75	10.76.96.74/32	10.76.96.74 – 10.76.96.74	10.76.96.74
76	10.76.96.75/32	10.76.96.75 – 10.76.96.75	10.76.96.75
77	10.76.96.76/32	10.76.96.76 – 10.76.96.76	10.76.96.76
78	10.76.96.77/32	10.76.96.77 – 10.76.96.77	10.76.96.77
79	10.76.96.78/32	10.76.96.78 – 10.76.96.78	10.76.96.78
80	10.76.96.79/32	10.76.96.79 – 10.76.96.79	10.76.96.79
81	10.76.96.80/32	10.76.96.80 – 10.76.96.80	10.76.96.80
82	10.76.96.81/32	10.76.96.81 – 10.76.96.81	10.76.96.81
83	10.76.96.82/32	10.76.96.82 – 10.76.96.82	10.76.96.82
84	10.76.96.83/32	10.76.96.83 – 10.76.96.83	10.76.96.83
85	10.76.96.84/32	10.76.96.84 – 10.76.96.84	10.76.96.84
86	10.76.96.85/32	10.76.96.85 – 10.76.96.85	10.76.96.85
87	10.76.96.86/32	10.76.96.86 – 10.76.96.86	10.76.96.86
88	10.76.96.87/32	10.76.96.87 – 10.76.96.87	10.76.96.87
89	10.76.96.88/32	10.76.96.88 – 10.76.96.88	10.76.96.88
90	10.76.96.89/32	10.76.96.89 – 10.76.96.89	10.76.96.89
91	10.76.96.90/32	10.76.96.90 – 10.76.96.90	10.76.96.90
92	10.76.96.91/32	10.76.96.91 – 10.76.96.91	10.76.96.91
93	10.76.96.92/32	10.76.96.92 – 10.76.96.92	10.76.96.92
94	10.76.96.93/32	10.76.96.93 – 10.76.96.93	10.76.96.93
95	10.76.96.94/32	10.76.96.94 – 10.76.96.94	10.76.96.94
96	10.76.96.95/32	10.76.96.95 – 10.76.96.95	10.76.96.95
97	10.76.96.96/32	10.76.96.96 – 10.76.96.96	10.76.96.96
98	10.76.96.97/32	10.76.96.97 – 10.76.96.97	10.76.96.97
99	10.76.96.98/32	10.76.96.98 – 10.76.96.98	10.76.96.98
100	10.76.96.99/32	10.76.96.99 – 10.76.96.99	10.76.96.99
101	10.76.96.100/32	10.76.96.100 – 10.76.96.100	10.76.96.100
102	10.76.96.101/32	10.76.96.101 – 10.76.96.101	10.76.96.101
103	10.76.96.102/32	10.76.96.102 – 10.76.96.102	10.76.96.102
104	10.76.96.103/32	10.76.96.103 – 10.76.96.103	10.76.96.103
105	10.76.96.104/32	10.76.96.104 – 10.76.96.104	10.76.96.104
106	10.76.96.105/32	10.76.96.105 – 10.76.96.105	10.76.96.105
107	10.76.96.106/32	10.76.96.106 – 10.76.96.106	10.76.96.106
108	10.76.96.107/32	10.76.96.107 – 10.76.96.107	10.76.96.107
109	10.76.96.108/32	10.76.96.108 – 10.76.96.108	10.76.96.108
110	10.76.96.109/32	10.76.96.109 – 10.76.96.109	10.76.96.109
111	10.76.96.110/32	10.76.96.110 – 10.76.96.110	10.76.96.110
112	10.76.96.111/32	10.76.96.111 – 10.76.96.111	10.76.96.111
113	10.76.96.112/32	10.76.96.112 – 10.76.96.112	10.76.96.112
114	10.76.96.113/32	10.76.96.113 – 10.76.96.113	10.76.96.113
115	10.76.96.114/32	10.76.96.114 – 10.76.96.114	10.76.96.114
116	10.76.96.115/32	10.76.96.115 – 10.76.96.115	10.76.96.115
117	10.76.96.116/32	10.76.96.116 – 10.76.96.116	10.76.96.116
118	10.76.96.117/32	10.76.96.117 – 10.76.96.117	10.76.96.117
119	10.76.96.118/32	10.76.96.118 – 10.76.96.118	10.76.96.118
120	10.76.96.119/32	10.76.96.119 – 10.76.96.119	10.76.96.119
121	10.76.96.120/32	10.76.96.120 – 10.76.96.120	10.76.96.120
122	10.76.96.121/32	10.76.96.121 – 10.76.96.121	10.76.96.121
123	10.76.96.122/32	10.76.96.122 – 10.76.96.122	10.76.96.122
124	10.76.96.123/32	10.76.96.123 – 10.76.96.123	10.76.96.123
125	10.76.96.124/32	10.76.96.124 – 10.76.96.124	10.76.96.124
126	10.76.96.125/32	10.76.96.125 – 10.76.96.125	10.76.96.125
127	10.76.96.126/32	10.76.96.126 – 10.76.96.126	10.76.96.126
128	10.76.96.127/32	10.76.96.127 – 10.76.96.127	10.76.96.127

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 →