123.88.132.128/27

Public

Class A — /27 prefix — 30 usable hosts

Network Address

123.88.132.128

Broadcast Address

123.88.132.159

Subnet Mask

255.255.255.224

Usable Hosts

First Usable IP

123.88.132.129

Last Usable IP

123.88.132.158

Total IPs

Prefix Length

/27

Network address — the base address of the block (123.88.132.128). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 123.88.132.159 are delivered to every device in the subnet. Also reserved — not assignable.

Usable hosts — the 30 addresses between those two that you can assign to servers, VMs, or interfaces.

Subnet mask — 255.255.255.224 is the dotted-decimal equivalent of /27. Older tools and Cisco configs use this format instead of CIDR slash notation.

Full Details

CIDR Notation	123.88.132.128/27
Network Address	123.88.132.128
Broadcast Address	123.88.132.159
Subnet Mask	255.255.255.224
Wildcard Mask	0.0.0.31
Prefix Length	/27
IP Address Class	Class A
Total IP Addresses	32
Usable Host Addresses	30
First Usable IP	123.88.132.129
Last Usable IP	123.88.132.158
Network (Hex)	0x7B588480
Broadcast (Hex)	0x7B58849F
Address Type	Public / Globally Routable

Binary Representation

Network Address

01111011.01011000.10000100 01111011.01011000.10000100.10000000

Subnet Mask

11111111.11111111.11111111.11100000

The first 27 bits (1s in the mask) identify the network. The remaining 5 bits identify hosts within the network.

Split into Equal Subnets

Split 123.88.132.128/27 into 2 equal /28 subnets (14 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	123.88.132.128/28	123.88.132.128	123.88.132.129	123.88.132.142	123.88.132.143	14
2	123.88.132.144/28	123.88.132.144	123.88.132.145	123.88.132.158	123.88.132.159	14

Split 123.88.132.128/27 into 4 equal /29 subnets (6 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	123.88.132.128/29	123.88.132.128	123.88.132.129	123.88.132.134	123.88.132.135	6
2	123.88.132.136/29	123.88.132.136	123.88.132.137	123.88.132.142	123.88.132.143	6
3	123.88.132.144/29	123.88.132.144	123.88.132.145	123.88.132.150	123.88.132.151	6
4	123.88.132.152/29	123.88.132.152	123.88.132.153	123.88.132.158	123.88.132.159	6

Split 123.88.132.128/27 into 8 equal /30 subnets (2 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	123.88.132.128/30	123.88.132.128	123.88.132.129	123.88.132.130	123.88.132.131	2
2	123.88.132.132/30	123.88.132.132	123.88.132.133	123.88.132.134	123.88.132.135	2
3	123.88.132.136/30	123.88.132.136	123.88.132.137	123.88.132.138	123.88.132.139	2
4	123.88.132.140/30	123.88.132.140	123.88.132.141	123.88.132.142	123.88.132.143	2
5	123.88.132.144/30	123.88.132.144	123.88.132.145	123.88.132.146	123.88.132.147	2
6	123.88.132.148/30	123.88.132.148	123.88.132.149	123.88.132.150	123.88.132.151	2
7	123.88.132.152/30	123.88.132.152	123.88.132.153	123.88.132.154	123.88.132.155	2
8	123.88.132.156/30	123.88.132.156	123.88.132.157	123.88.132.158	123.88.132.159	2

IP Address Sample

Showing first 16 of 32 total IPs.

123.88.132.128 net

123.88.132.129

123.88.132.130

123.88.132.131

123.88.132.132

123.88.132.133

123.88.132.134

123.88.132.135

123.88.132.136

123.88.132.137

123.88.132.138

123.88.132.139

123.88.132.140

123.88.132.141

123.88.132.142

123.88.132.143

… 16 more IPs …

/27 Subnet Reference

Total IPs 32

Usable Hosts 30

Subnet Mask 255.255.255.224

Wildcard 0.0.0.31

Full /27 reference →

Related Ranges

Parent /26 block 123.88.132.128/26 Sibling /27 block 123.88.132.160/27

Adjacent Prefix Sizes

/25 126 hosts /26 62 hosts /27 30 hosts /28 14 hosts /29 6 hosts