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)10.26.69.0/25

network10.26.69.0/25

broadcast10.26.69.127

first host10.26.69.1

last host10.26.69.126

subnet mask255.255.255.128

wildcard0.0.0.127

addresses128

usable hosts126

classA

ipcalc 10.26.69.0/25

address00001010.00011010.01000101.00000000

subnet mask11111111.11111111.11111111.10000000

network00001010.00011010.01000101.00000000

broadcast00001010.00011010.01000101.01111111

green = network part, grey = host part

hex0x0a1a4500

decimal169493760

reverse dns0.69.26.10.in-addr.arpa

ipv4-mapped::ffff:a1a:4500

/25 split into /32 · 128 subnets

close ×

#	network	host range	broadcast
1	10.26.69.0/32	10.26.69.0 – 10.26.69.0	10.26.69.0
2	10.26.69.1/32	10.26.69.1 – 10.26.69.1	10.26.69.1
3	10.26.69.2/32	10.26.69.2 – 10.26.69.2	10.26.69.2
4	10.26.69.3/32	10.26.69.3 – 10.26.69.3	10.26.69.3
5	10.26.69.4/32	10.26.69.4 – 10.26.69.4	10.26.69.4
6	10.26.69.5/32	10.26.69.5 – 10.26.69.5	10.26.69.5
7	10.26.69.6/32	10.26.69.6 – 10.26.69.6	10.26.69.6
8	10.26.69.7/32	10.26.69.7 – 10.26.69.7	10.26.69.7
9	10.26.69.8/32	10.26.69.8 – 10.26.69.8	10.26.69.8
10	10.26.69.9/32	10.26.69.9 – 10.26.69.9	10.26.69.9
11	10.26.69.10/32	10.26.69.10 – 10.26.69.10	10.26.69.10
12	10.26.69.11/32	10.26.69.11 – 10.26.69.11	10.26.69.11
13	10.26.69.12/32	10.26.69.12 – 10.26.69.12	10.26.69.12
14	10.26.69.13/32	10.26.69.13 – 10.26.69.13	10.26.69.13
15	10.26.69.14/32	10.26.69.14 – 10.26.69.14	10.26.69.14
16	10.26.69.15/32	10.26.69.15 – 10.26.69.15	10.26.69.15
17	10.26.69.16/32	10.26.69.16 – 10.26.69.16	10.26.69.16
18	10.26.69.17/32	10.26.69.17 – 10.26.69.17	10.26.69.17
19	10.26.69.18/32	10.26.69.18 – 10.26.69.18	10.26.69.18
20	10.26.69.19/32	10.26.69.19 – 10.26.69.19	10.26.69.19
21	10.26.69.20/32	10.26.69.20 – 10.26.69.20	10.26.69.20
22	10.26.69.21/32	10.26.69.21 – 10.26.69.21	10.26.69.21
23	10.26.69.22/32	10.26.69.22 – 10.26.69.22	10.26.69.22
24	10.26.69.23/32	10.26.69.23 – 10.26.69.23	10.26.69.23
25	10.26.69.24/32	10.26.69.24 – 10.26.69.24	10.26.69.24
26	10.26.69.25/32	10.26.69.25 – 10.26.69.25	10.26.69.25
27	10.26.69.26/32	10.26.69.26 – 10.26.69.26	10.26.69.26
28	10.26.69.27/32	10.26.69.27 – 10.26.69.27	10.26.69.27
29	10.26.69.28/32	10.26.69.28 – 10.26.69.28	10.26.69.28
30	10.26.69.29/32	10.26.69.29 – 10.26.69.29	10.26.69.29
31	10.26.69.30/32	10.26.69.30 – 10.26.69.30	10.26.69.30
32	10.26.69.31/32	10.26.69.31 – 10.26.69.31	10.26.69.31
33	10.26.69.32/32	10.26.69.32 – 10.26.69.32	10.26.69.32
34	10.26.69.33/32	10.26.69.33 – 10.26.69.33	10.26.69.33
35	10.26.69.34/32	10.26.69.34 – 10.26.69.34	10.26.69.34
36	10.26.69.35/32	10.26.69.35 – 10.26.69.35	10.26.69.35
37	10.26.69.36/32	10.26.69.36 – 10.26.69.36	10.26.69.36
38	10.26.69.37/32	10.26.69.37 – 10.26.69.37	10.26.69.37
39	10.26.69.38/32	10.26.69.38 – 10.26.69.38	10.26.69.38
40	10.26.69.39/32	10.26.69.39 – 10.26.69.39	10.26.69.39
41	10.26.69.40/32	10.26.69.40 – 10.26.69.40	10.26.69.40
42	10.26.69.41/32	10.26.69.41 – 10.26.69.41	10.26.69.41
43	10.26.69.42/32	10.26.69.42 – 10.26.69.42	10.26.69.42
44	10.26.69.43/32	10.26.69.43 – 10.26.69.43	10.26.69.43
45	10.26.69.44/32	10.26.69.44 – 10.26.69.44	10.26.69.44
46	10.26.69.45/32	10.26.69.45 – 10.26.69.45	10.26.69.45
47	10.26.69.46/32	10.26.69.46 – 10.26.69.46	10.26.69.46
48	10.26.69.47/32	10.26.69.47 – 10.26.69.47	10.26.69.47
49	10.26.69.48/32	10.26.69.48 – 10.26.69.48	10.26.69.48
50	10.26.69.49/32	10.26.69.49 – 10.26.69.49	10.26.69.49
51	10.26.69.50/32	10.26.69.50 – 10.26.69.50	10.26.69.50
52	10.26.69.51/32	10.26.69.51 – 10.26.69.51	10.26.69.51
53	10.26.69.52/32	10.26.69.52 – 10.26.69.52	10.26.69.52
54	10.26.69.53/32	10.26.69.53 – 10.26.69.53	10.26.69.53
55	10.26.69.54/32	10.26.69.54 – 10.26.69.54	10.26.69.54
56	10.26.69.55/32	10.26.69.55 – 10.26.69.55	10.26.69.55
57	10.26.69.56/32	10.26.69.56 – 10.26.69.56	10.26.69.56
58	10.26.69.57/32	10.26.69.57 – 10.26.69.57	10.26.69.57
59	10.26.69.58/32	10.26.69.58 – 10.26.69.58	10.26.69.58
60	10.26.69.59/32	10.26.69.59 – 10.26.69.59	10.26.69.59
61	10.26.69.60/32	10.26.69.60 – 10.26.69.60	10.26.69.60
62	10.26.69.61/32	10.26.69.61 – 10.26.69.61	10.26.69.61
63	10.26.69.62/32	10.26.69.62 – 10.26.69.62	10.26.69.62
64	10.26.69.63/32	10.26.69.63 – 10.26.69.63	10.26.69.63
65	10.26.69.64/32	10.26.69.64 – 10.26.69.64	10.26.69.64
66	10.26.69.65/32	10.26.69.65 – 10.26.69.65	10.26.69.65
67	10.26.69.66/32	10.26.69.66 – 10.26.69.66	10.26.69.66
68	10.26.69.67/32	10.26.69.67 – 10.26.69.67	10.26.69.67
69	10.26.69.68/32	10.26.69.68 – 10.26.69.68	10.26.69.68
70	10.26.69.69/32	10.26.69.69 – 10.26.69.69	10.26.69.69
71	10.26.69.70/32	10.26.69.70 – 10.26.69.70	10.26.69.70
72	10.26.69.71/32	10.26.69.71 – 10.26.69.71	10.26.69.71
73	10.26.69.72/32	10.26.69.72 – 10.26.69.72	10.26.69.72
74	10.26.69.73/32	10.26.69.73 – 10.26.69.73	10.26.69.73
75	10.26.69.74/32	10.26.69.74 – 10.26.69.74	10.26.69.74
76	10.26.69.75/32	10.26.69.75 – 10.26.69.75	10.26.69.75
77	10.26.69.76/32	10.26.69.76 – 10.26.69.76	10.26.69.76
78	10.26.69.77/32	10.26.69.77 – 10.26.69.77	10.26.69.77
79	10.26.69.78/32	10.26.69.78 – 10.26.69.78	10.26.69.78
80	10.26.69.79/32	10.26.69.79 – 10.26.69.79	10.26.69.79
81	10.26.69.80/32	10.26.69.80 – 10.26.69.80	10.26.69.80
82	10.26.69.81/32	10.26.69.81 – 10.26.69.81	10.26.69.81
83	10.26.69.82/32	10.26.69.82 – 10.26.69.82	10.26.69.82
84	10.26.69.83/32	10.26.69.83 – 10.26.69.83	10.26.69.83
85	10.26.69.84/32	10.26.69.84 – 10.26.69.84	10.26.69.84
86	10.26.69.85/32	10.26.69.85 – 10.26.69.85	10.26.69.85
87	10.26.69.86/32	10.26.69.86 – 10.26.69.86	10.26.69.86
88	10.26.69.87/32	10.26.69.87 – 10.26.69.87	10.26.69.87
89	10.26.69.88/32	10.26.69.88 – 10.26.69.88	10.26.69.88
90	10.26.69.89/32	10.26.69.89 – 10.26.69.89	10.26.69.89
91	10.26.69.90/32	10.26.69.90 – 10.26.69.90	10.26.69.90
92	10.26.69.91/32	10.26.69.91 – 10.26.69.91	10.26.69.91
93	10.26.69.92/32	10.26.69.92 – 10.26.69.92	10.26.69.92
94	10.26.69.93/32	10.26.69.93 – 10.26.69.93	10.26.69.93
95	10.26.69.94/32	10.26.69.94 – 10.26.69.94	10.26.69.94
96	10.26.69.95/32	10.26.69.95 – 10.26.69.95	10.26.69.95
97	10.26.69.96/32	10.26.69.96 – 10.26.69.96	10.26.69.96
98	10.26.69.97/32	10.26.69.97 – 10.26.69.97	10.26.69.97
99	10.26.69.98/32	10.26.69.98 – 10.26.69.98	10.26.69.98
100	10.26.69.99/32	10.26.69.99 – 10.26.69.99	10.26.69.99
101	10.26.69.100/32	10.26.69.100 – 10.26.69.100	10.26.69.100
102	10.26.69.101/32	10.26.69.101 – 10.26.69.101	10.26.69.101
103	10.26.69.102/32	10.26.69.102 – 10.26.69.102	10.26.69.102
104	10.26.69.103/32	10.26.69.103 – 10.26.69.103	10.26.69.103
105	10.26.69.104/32	10.26.69.104 – 10.26.69.104	10.26.69.104
106	10.26.69.105/32	10.26.69.105 – 10.26.69.105	10.26.69.105
107	10.26.69.106/32	10.26.69.106 – 10.26.69.106	10.26.69.106
108	10.26.69.107/32	10.26.69.107 – 10.26.69.107	10.26.69.107
109	10.26.69.108/32	10.26.69.108 – 10.26.69.108	10.26.69.108
110	10.26.69.109/32	10.26.69.109 – 10.26.69.109	10.26.69.109
111	10.26.69.110/32	10.26.69.110 – 10.26.69.110	10.26.69.110
112	10.26.69.111/32	10.26.69.111 – 10.26.69.111	10.26.69.111
113	10.26.69.112/32	10.26.69.112 – 10.26.69.112	10.26.69.112
114	10.26.69.113/32	10.26.69.113 – 10.26.69.113	10.26.69.113
115	10.26.69.114/32	10.26.69.114 – 10.26.69.114	10.26.69.114
116	10.26.69.115/32	10.26.69.115 – 10.26.69.115	10.26.69.115
117	10.26.69.116/32	10.26.69.116 – 10.26.69.116	10.26.69.116
118	10.26.69.117/32	10.26.69.117 – 10.26.69.117	10.26.69.117
119	10.26.69.118/32	10.26.69.118 – 10.26.69.118	10.26.69.118
120	10.26.69.119/32	10.26.69.119 – 10.26.69.119	10.26.69.119
121	10.26.69.120/32	10.26.69.120 – 10.26.69.120	10.26.69.120
122	10.26.69.121/32	10.26.69.121 – 10.26.69.121	10.26.69.121
123	10.26.69.122/32	10.26.69.122 – 10.26.69.122	10.26.69.122
124	10.26.69.123/32	10.26.69.123 – 10.26.69.123	10.26.69.123
125	10.26.69.124/32	10.26.69.124 – 10.26.69.124	10.26.69.124
126	10.26.69.125/32	10.26.69.125 – 10.26.69.125	10.26.69.125
127	10.26.69.126/32	10.26.69.126 – 10.26.69.126	10.26.69.126
128	10.26.69.127/32	10.26.69.127 – 10.26.69.127	10.26.69.127

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 →