11.103.159.128/27

Public

Class A — /27 prefix — 30 usable hosts

Network Address

11.103.159.128

Broadcast Address

11.103.159.159

Subnet Mask

255.255.255.224

Usable Hosts

First Usable IP

11.103.159.129

Last Usable IP

11.103.159.158

Total IPs

Prefix Length

/27

Network address — the base address of the block (11.103.159.128). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 11.103.159.159 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	11.103.159.128/27
Network Address	11.103.159.128
Broadcast Address	11.103.159.159
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	11.103.159.129
Last Usable IP	11.103.159.158
Network (Hex)	0x0B679F80
Broadcast (Hex)	0x0B679F9F
Address Type	Public / Globally Routable

Binary Representation

Network Address

00001011.01100111.10011111 00001011.01100111.10011111.10000000

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 11.103.159.128/27 into 2 equal /28 subnets (14 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	11.103.159.128/28	11.103.159.128	11.103.159.129	11.103.159.142	11.103.159.143	14
2	11.103.159.144/28	11.103.159.144	11.103.159.145	11.103.159.158	11.103.159.159	14

Split 11.103.159.128/27 into 4 equal /29 subnets (6 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	11.103.159.128/29	11.103.159.128	11.103.159.129	11.103.159.134	11.103.159.135	6
2	11.103.159.136/29	11.103.159.136	11.103.159.137	11.103.159.142	11.103.159.143	6
3	11.103.159.144/29	11.103.159.144	11.103.159.145	11.103.159.150	11.103.159.151	6
4	11.103.159.152/29	11.103.159.152	11.103.159.153	11.103.159.158	11.103.159.159	6

Split 11.103.159.128/27 into 8 equal /30 subnets (2 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	11.103.159.128/30	11.103.159.128	11.103.159.129	11.103.159.130	11.103.159.131	2
2	11.103.159.132/30	11.103.159.132	11.103.159.133	11.103.159.134	11.103.159.135	2
3	11.103.159.136/30	11.103.159.136	11.103.159.137	11.103.159.138	11.103.159.139	2
4	11.103.159.140/30	11.103.159.140	11.103.159.141	11.103.159.142	11.103.159.143	2
5	11.103.159.144/30	11.103.159.144	11.103.159.145	11.103.159.146	11.103.159.147	2
6	11.103.159.148/30	11.103.159.148	11.103.159.149	11.103.159.150	11.103.159.151	2
7	11.103.159.152/30	11.103.159.152	11.103.159.153	11.103.159.154	11.103.159.155	2
8	11.103.159.156/30	11.103.159.156	11.103.159.157	11.103.159.158	11.103.159.159	2

IP Address Sample

Showing first 16 of 32 total IPs.

11.103.159.128 net

11.103.159.129

11.103.159.130

11.103.159.131

11.103.159.132

11.103.159.133

11.103.159.134

11.103.159.135

11.103.159.136

11.103.159.137

11.103.159.138

11.103.159.139

11.103.159.140

11.103.159.141

11.103.159.142

11.103.159.143

… 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 11.103.159.128/26 Sibling /27 block 11.103.159.160/27

Adjacent Prefix Sizes

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