128.182.123.128/26

Public

Class B — /26 prefix — 62 usable hosts

Network Address

128.182.123.128

Broadcast Address

128.182.123.191

Subnet Mask

255.255.255.192

Usable Hosts

First Usable IP

128.182.123.129

Last Usable IP

128.182.123.190

Total IPs

Prefix Length

/26

Network address — the base address of the block (128.182.123.128). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 128.182.123.191 are delivered to every device in the subnet. Also reserved — not assignable.

Usable hosts — the 62 addresses between those two that you can assign to servers, VMs, or interfaces.

Subnet mask — 255.255.255.192 is the dotted-decimal equivalent of /26. Older tools and Cisco configs use this format instead of CIDR slash notation.

Full Details

CIDR Notation	128.182.123.128/26
Network Address	128.182.123.128
Broadcast Address	128.182.123.191
Subnet Mask	255.255.255.192
Wildcard Mask	0.0.0.63
Prefix Length	/26
IP Address Class	Class B
Total IP Addresses	64
Usable Host Addresses	62
First Usable IP	128.182.123.129
Last Usable IP	128.182.123.190
Network (Hex)	0x80B67B80
Broadcast (Hex)	0x80B67BBF
Address Type	Public / Globally Routable

Binary Representation

Network Address

10000000.10110110.01111011 10000000.10110110.01111011.10000000

Subnet Mask

11111111.11111111.11111111.11000000

The first 26 bits (1s in the mask) identify the network. The remaining 6 bits identify hosts within the network.

Split into Equal Subnets

Split 128.182.123.128/26 into 2 equal /27 subnets (30 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	128.182.123.128/27	128.182.123.128	128.182.123.129	128.182.123.158	128.182.123.159	30
2	128.182.123.160/27	128.182.123.160	128.182.123.161	128.182.123.190	128.182.123.191	30

Split 128.182.123.128/26 into 4 equal /28 subnets (14 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	128.182.123.128/28	128.182.123.128	128.182.123.129	128.182.123.142	128.182.123.143	14
2	128.182.123.144/28	128.182.123.144	128.182.123.145	128.182.123.158	128.182.123.159	14
3	128.182.123.160/28	128.182.123.160	128.182.123.161	128.182.123.174	128.182.123.175	14
4	128.182.123.176/28	128.182.123.176	128.182.123.177	128.182.123.190	128.182.123.191	14

Split 128.182.123.128/26 into 8 equal /29 subnets (6 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	128.182.123.128/29	128.182.123.128	128.182.123.129	128.182.123.134	128.182.123.135	6
2	128.182.123.136/29	128.182.123.136	128.182.123.137	128.182.123.142	128.182.123.143	6
3	128.182.123.144/29	128.182.123.144	128.182.123.145	128.182.123.150	128.182.123.151	6
4	128.182.123.152/29	128.182.123.152	128.182.123.153	128.182.123.158	128.182.123.159	6
5	128.182.123.160/29	128.182.123.160	128.182.123.161	128.182.123.166	128.182.123.167	6
6	128.182.123.168/29	128.182.123.168	128.182.123.169	128.182.123.174	128.182.123.175	6
7	128.182.123.176/29	128.182.123.176	128.182.123.177	128.182.123.182	128.182.123.183	6
8	128.182.123.184/29	128.182.123.184	128.182.123.185	128.182.123.190	128.182.123.191	6

Split 128.182.123.128/26 into 16 equal /30 subnets (2 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	128.182.123.128/30	128.182.123.128	128.182.123.129	128.182.123.130	128.182.123.131	2
2	128.182.123.132/30	128.182.123.132	128.182.123.133	128.182.123.134	128.182.123.135	2
3	128.182.123.136/30	128.182.123.136	128.182.123.137	128.182.123.138	128.182.123.139	2
4	128.182.123.140/30	128.182.123.140	128.182.123.141	128.182.123.142	128.182.123.143	2
5	128.182.123.144/30	128.182.123.144	128.182.123.145	128.182.123.146	128.182.123.147	2
6	128.182.123.148/30	128.182.123.148	128.182.123.149	128.182.123.150	128.182.123.151	2
7	128.182.123.152/30	128.182.123.152	128.182.123.153	128.182.123.154	128.182.123.155	2
8	128.182.123.156/30	128.182.123.156	128.182.123.157	128.182.123.158	128.182.123.159	2
9	128.182.123.160/30	128.182.123.160	128.182.123.161	128.182.123.162	128.182.123.163	2
10	128.182.123.164/30	128.182.123.164	128.182.123.165	128.182.123.166	128.182.123.167	2
11	128.182.123.168/30	128.182.123.168	128.182.123.169	128.182.123.170	128.182.123.171	2
12	128.182.123.172/30	128.182.123.172	128.182.123.173	128.182.123.174	128.182.123.175	2
13	128.182.123.176/30	128.182.123.176	128.182.123.177	128.182.123.178	128.182.123.179	2
14	128.182.123.180/30	128.182.123.180	128.182.123.181	128.182.123.182	128.182.123.183	2
15	128.182.123.184/30	128.182.123.184	128.182.123.185	128.182.123.186	128.182.123.187	2
16	128.182.123.188/30	128.182.123.188	128.182.123.189	128.182.123.190	128.182.123.191	2

IP Address Sample

Showing first 16 of 64 total IPs.

128.182.123.128 net

128.182.123.129

128.182.123.130

128.182.123.131

128.182.123.132

128.182.123.133

128.182.123.134

128.182.123.135

128.182.123.136

128.182.123.137

128.182.123.138

128.182.123.139

128.182.123.140

128.182.123.141

128.182.123.142

128.182.123.143

… 48 more IPs …

/26 Subnet Reference

Total IPs 64

Usable Hosts 62

Subnet Mask 255.255.255.192

Wildcard 0.0.0.63

Full /26 reference →

Related Ranges

Parent /25 block 128.182.123.128/25 Sibling /26 block 128.182.123.192/26

Adjacent Prefix Sizes

/24 254 hosts /25 126 hosts /26 62 hosts /27 30 hosts /28 14 hosts