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)10.0.60.0/25

network10.0.60.0/25

broadcast10.0.60.127

first host10.0.60.1

last host10.0.60.126

subnet mask255.255.255.128

wildcard0.0.0.127

addresses128

usable hosts126

classA

ipcalc 10.0.60.0/25

address00001010.00000000.00111100.00000000

subnet mask11111111.11111111.11111111.10000000

network00001010.00000000.00111100.00000000

broadcast00001010.00000000.00111100.01111111

green = network part, grey = host part

hex0x0a003c00

decimal167787520

reverse dns0.60.0.10.in-addr.arpa

ipv4-mapped::ffff:a00:3c00

/25 split into /32 · 128 subnets

close ×

#	network	host range	broadcast
1	10.0.60.0/32	10.0.60.0 – 10.0.60.0	10.0.60.0
2	10.0.60.1/32	10.0.60.1 – 10.0.60.1	10.0.60.1
3	10.0.60.2/32	10.0.60.2 – 10.0.60.2	10.0.60.2
4	10.0.60.3/32	10.0.60.3 – 10.0.60.3	10.0.60.3
5	10.0.60.4/32	10.0.60.4 – 10.0.60.4	10.0.60.4
6	10.0.60.5/32	10.0.60.5 – 10.0.60.5	10.0.60.5
7	10.0.60.6/32	10.0.60.6 – 10.0.60.6	10.0.60.6
8	10.0.60.7/32	10.0.60.7 – 10.0.60.7	10.0.60.7
9	10.0.60.8/32	10.0.60.8 – 10.0.60.8	10.0.60.8
10	10.0.60.9/32	10.0.60.9 – 10.0.60.9	10.0.60.9
11	10.0.60.10/32	10.0.60.10 – 10.0.60.10	10.0.60.10
12	10.0.60.11/32	10.0.60.11 – 10.0.60.11	10.0.60.11
13	10.0.60.12/32	10.0.60.12 – 10.0.60.12	10.0.60.12
14	10.0.60.13/32	10.0.60.13 – 10.0.60.13	10.0.60.13
15	10.0.60.14/32	10.0.60.14 – 10.0.60.14	10.0.60.14
16	10.0.60.15/32	10.0.60.15 – 10.0.60.15	10.0.60.15
17	10.0.60.16/32	10.0.60.16 – 10.0.60.16	10.0.60.16
18	10.0.60.17/32	10.0.60.17 – 10.0.60.17	10.0.60.17
19	10.0.60.18/32	10.0.60.18 – 10.0.60.18	10.0.60.18
20	10.0.60.19/32	10.0.60.19 – 10.0.60.19	10.0.60.19
21	10.0.60.20/32	10.0.60.20 – 10.0.60.20	10.0.60.20
22	10.0.60.21/32	10.0.60.21 – 10.0.60.21	10.0.60.21
23	10.0.60.22/32	10.0.60.22 – 10.0.60.22	10.0.60.22
24	10.0.60.23/32	10.0.60.23 – 10.0.60.23	10.0.60.23
25	10.0.60.24/32	10.0.60.24 – 10.0.60.24	10.0.60.24
26	10.0.60.25/32	10.0.60.25 – 10.0.60.25	10.0.60.25
27	10.0.60.26/32	10.0.60.26 – 10.0.60.26	10.0.60.26
28	10.0.60.27/32	10.0.60.27 – 10.0.60.27	10.0.60.27
29	10.0.60.28/32	10.0.60.28 – 10.0.60.28	10.0.60.28
30	10.0.60.29/32	10.0.60.29 – 10.0.60.29	10.0.60.29
31	10.0.60.30/32	10.0.60.30 – 10.0.60.30	10.0.60.30
32	10.0.60.31/32	10.0.60.31 – 10.0.60.31	10.0.60.31
33	10.0.60.32/32	10.0.60.32 – 10.0.60.32	10.0.60.32
34	10.0.60.33/32	10.0.60.33 – 10.0.60.33	10.0.60.33
35	10.0.60.34/32	10.0.60.34 – 10.0.60.34	10.0.60.34
36	10.0.60.35/32	10.0.60.35 – 10.0.60.35	10.0.60.35
37	10.0.60.36/32	10.0.60.36 – 10.0.60.36	10.0.60.36
38	10.0.60.37/32	10.0.60.37 – 10.0.60.37	10.0.60.37
39	10.0.60.38/32	10.0.60.38 – 10.0.60.38	10.0.60.38
40	10.0.60.39/32	10.0.60.39 – 10.0.60.39	10.0.60.39
41	10.0.60.40/32	10.0.60.40 – 10.0.60.40	10.0.60.40
42	10.0.60.41/32	10.0.60.41 – 10.0.60.41	10.0.60.41
43	10.0.60.42/32	10.0.60.42 – 10.0.60.42	10.0.60.42
44	10.0.60.43/32	10.0.60.43 – 10.0.60.43	10.0.60.43
45	10.0.60.44/32	10.0.60.44 – 10.0.60.44	10.0.60.44
46	10.0.60.45/32	10.0.60.45 – 10.0.60.45	10.0.60.45
47	10.0.60.46/32	10.0.60.46 – 10.0.60.46	10.0.60.46
48	10.0.60.47/32	10.0.60.47 – 10.0.60.47	10.0.60.47
49	10.0.60.48/32	10.0.60.48 – 10.0.60.48	10.0.60.48
50	10.0.60.49/32	10.0.60.49 – 10.0.60.49	10.0.60.49
51	10.0.60.50/32	10.0.60.50 – 10.0.60.50	10.0.60.50
52	10.0.60.51/32	10.0.60.51 – 10.0.60.51	10.0.60.51
53	10.0.60.52/32	10.0.60.52 – 10.0.60.52	10.0.60.52
54	10.0.60.53/32	10.0.60.53 – 10.0.60.53	10.0.60.53
55	10.0.60.54/32	10.0.60.54 – 10.0.60.54	10.0.60.54
56	10.0.60.55/32	10.0.60.55 – 10.0.60.55	10.0.60.55
57	10.0.60.56/32	10.0.60.56 – 10.0.60.56	10.0.60.56
58	10.0.60.57/32	10.0.60.57 – 10.0.60.57	10.0.60.57
59	10.0.60.58/32	10.0.60.58 – 10.0.60.58	10.0.60.58
60	10.0.60.59/32	10.0.60.59 – 10.0.60.59	10.0.60.59
61	10.0.60.60/32	10.0.60.60 – 10.0.60.60	10.0.60.60
62	10.0.60.61/32	10.0.60.61 – 10.0.60.61	10.0.60.61
63	10.0.60.62/32	10.0.60.62 – 10.0.60.62	10.0.60.62
64	10.0.60.63/32	10.0.60.63 – 10.0.60.63	10.0.60.63
65	10.0.60.64/32	10.0.60.64 – 10.0.60.64	10.0.60.64
66	10.0.60.65/32	10.0.60.65 – 10.0.60.65	10.0.60.65
67	10.0.60.66/32	10.0.60.66 – 10.0.60.66	10.0.60.66
68	10.0.60.67/32	10.0.60.67 – 10.0.60.67	10.0.60.67
69	10.0.60.68/32	10.0.60.68 – 10.0.60.68	10.0.60.68
70	10.0.60.69/32	10.0.60.69 – 10.0.60.69	10.0.60.69
71	10.0.60.70/32	10.0.60.70 – 10.0.60.70	10.0.60.70
72	10.0.60.71/32	10.0.60.71 – 10.0.60.71	10.0.60.71
73	10.0.60.72/32	10.0.60.72 – 10.0.60.72	10.0.60.72
74	10.0.60.73/32	10.0.60.73 – 10.0.60.73	10.0.60.73
75	10.0.60.74/32	10.0.60.74 – 10.0.60.74	10.0.60.74
76	10.0.60.75/32	10.0.60.75 – 10.0.60.75	10.0.60.75
77	10.0.60.76/32	10.0.60.76 – 10.0.60.76	10.0.60.76
78	10.0.60.77/32	10.0.60.77 – 10.0.60.77	10.0.60.77
79	10.0.60.78/32	10.0.60.78 – 10.0.60.78	10.0.60.78
80	10.0.60.79/32	10.0.60.79 – 10.0.60.79	10.0.60.79
81	10.0.60.80/32	10.0.60.80 – 10.0.60.80	10.0.60.80
82	10.0.60.81/32	10.0.60.81 – 10.0.60.81	10.0.60.81
83	10.0.60.82/32	10.0.60.82 – 10.0.60.82	10.0.60.82
84	10.0.60.83/32	10.0.60.83 – 10.0.60.83	10.0.60.83
85	10.0.60.84/32	10.0.60.84 – 10.0.60.84	10.0.60.84
86	10.0.60.85/32	10.0.60.85 – 10.0.60.85	10.0.60.85
87	10.0.60.86/32	10.0.60.86 – 10.0.60.86	10.0.60.86
88	10.0.60.87/32	10.0.60.87 – 10.0.60.87	10.0.60.87
89	10.0.60.88/32	10.0.60.88 – 10.0.60.88	10.0.60.88
90	10.0.60.89/32	10.0.60.89 – 10.0.60.89	10.0.60.89
91	10.0.60.90/32	10.0.60.90 – 10.0.60.90	10.0.60.90
92	10.0.60.91/32	10.0.60.91 – 10.0.60.91	10.0.60.91
93	10.0.60.92/32	10.0.60.92 – 10.0.60.92	10.0.60.92
94	10.0.60.93/32	10.0.60.93 – 10.0.60.93	10.0.60.93
95	10.0.60.94/32	10.0.60.94 – 10.0.60.94	10.0.60.94
96	10.0.60.95/32	10.0.60.95 – 10.0.60.95	10.0.60.95
97	10.0.60.96/32	10.0.60.96 – 10.0.60.96	10.0.60.96
98	10.0.60.97/32	10.0.60.97 – 10.0.60.97	10.0.60.97
99	10.0.60.98/32	10.0.60.98 – 10.0.60.98	10.0.60.98
100	10.0.60.99/32	10.0.60.99 – 10.0.60.99	10.0.60.99
101	10.0.60.100/32	10.0.60.100 – 10.0.60.100	10.0.60.100
102	10.0.60.101/32	10.0.60.101 – 10.0.60.101	10.0.60.101
103	10.0.60.102/32	10.0.60.102 – 10.0.60.102	10.0.60.102
104	10.0.60.103/32	10.0.60.103 – 10.0.60.103	10.0.60.103
105	10.0.60.104/32	10.0.60.104 – 10.0.60.104	10.0.60.104
106	10.0.60.105/32	10.0.60.105 – 10.0.60.105	10.0.60.105
107	10.0.60.106/32	10.0.60.106 – 10.0.60.106	10.0.60.106
108	10.0.60.107/32	10.0.60.107 – 10.0.60.107	10.0.60.107
109	10.0.60.108/32	10.0.60.108 – 10.0.60.108	10.0.60.108
110	10.0.60.109/32	10.0.60.109 – 10.0.60.109	10.0.60.109
111	10.0.60.110/32	10.0.60.110 – 10.0.60.110	10.0.60.110
112	10.0.60.111/32	10.0.60.111 – 10.0.60.111	10.0.60.111
113	10.0.60.112/32	10.0.60.112 – 10.0.60.112	10.0.60.112
114	10.0.60.113/32	10.0.60.113 – 10.0.60.113	10.0.60.113
115	10.0.60.114/32	10.0.60.114 – 10.0.60.114	10.0.60.114
116	10.0.60.115/32	10.0.60.115 – 10.0.60.115	10.0.60.115
117	10.0.60.116/32	10.0.60.116 – 10.0.60.116	10.0.60.116
118	10.0.60.117/32	10.0.60.117 – 10.0.60.117	10.0.60.117
119	10.0.60.118/32	10.0.60.118 – 10.0.60.118	10.0.60.118
120	10.0.60.119/32	10.0.60.119 – 10.0.60.119	10.0.60.119
121	10.0.60.120/32	10.0.60.120 – 10.0.60.120	10.0.60.120
122	10.0.60.121/32	10.0.60.121 – 10.0.60.121	10.0.60.121
123	10.0.60.122/32	10.0.60.122 – 10.0.60.122	10.0.60.122
124	10.0.60.123/32	10.0.60.123 – 10.0.60.123	10.0.60.123
125	10.0.60.124/32	10.0.60.124 – 10.0.60.124	10.0.60.124
126	10.0.60.125/32	10.0.60.125 – 10.0.60.125	10.0.60.125
127	10.0.60.126/32	10.0.60.126 – 10.0.60.126	10.0.60.126
128	10.0.60.127/32	10.0.60.127 – 10.0.60.127	10.0.60.127

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 →