11.18.13.96/28

Public

Class A — /28 prefix — 14 usable hosts

Network Address

11.18.13.96

Broadcast Address

11.18.13.111

Subnet Mask

255.255.255.240

Usable Hosts

First Usable IP

11.18.13.97

Last Usable IP

11.18.13.110

Total IPs

Prefix Length

/28

Network address — the base address of the block (11.18.13.96). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 11.18.13.111 are delivered to every device in the subnet. Also reserved — not assignable.

Usable hosts — the 14 addresses between those two that you can assign to servers, VMs, or interfaces.

Subnet mask — 255.255.255.240 is the dotted-decimal equivalent of /28. Older tools and Cisco configs use this format instead of CIDR slash notation.

Full Details

CIDR Notation	11.18.13.96/28
Network Address	11.18.13.96
Broadcast Address	11.18.13.111
Subnet Mask	255.255.255.240
Wildcard Mask	0.0.0.15
Prefix Length	/28
IP Address Class	Class A
Total IP Addresses	16
Usable Host Addresses	14
First Usable IP	11.18.13.97
Last Usable IP	11.18.13.110
Network (Hex)	0x0B120D60
Broadcast (Hex)	0x0B120D6F
Address Type	Public / Globally Routable

Binary Representation

Network Address

00001011.00010010.00001101 00001011.00010010.00001101.01100000

Subnet Mask

11111111.11111111.11111111.11110000

The first 28 bits (1s in the mask) identify the network. The remaining 4 bits identify hosts within the network.

Split into Equal Subnets

Split 11.18.13.96/28 into 2 equal /29 subnets (6 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	11.18.13.96/29	11.18.13.96	11.18.13.97	11.18.13.102	11.18.13.103	6
2	11.18.13.104/29	11.18.13.104	11.18.13.105	11.18.13.110	11.18.13.111	6

Split 11.18.13.96/28 into 4 equal /30 subnets (2 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	11.18.13.96/30	11.18.13.96	11.18.13.97	11.18.13.98	11.18.13.99	2
2	11.18.13.100/30	11.18.13.100	11.18.13.101	11.18.13.102	11.18.13.103	2
3	11.18.13.104/30	11.18.13.104	11.18.13.105	11.18.13.106	11.18.13.107	2
4	11.18.13.108/30	11.18.13.108	11.18.13.109	11.18.13.110	11.18.13.111	2

All 16 IP Addresses in this Range

11.18.13.96 net

11.18.13.97

11.18.13.98

11.18.13.99

11.18.13.100

11.18.13.101

11.18.13.102

11.18.13.103

11.18.13.104

11.18.13.105

11.18.13.106

11.18.13.107

11.18.13.108

11.18.13.109

11.18.13.110

11.18.13.111 bcast

/28 Subnet Reference

Total IPs 16

Usable Hosts 14

Subnet Mask 255.255.255.240

Wildcard 0.0.0.15

Full /28 reference →

Related Ranges

Parent /27 block 11.18.13.96/27 Sibling /28 block 11.18.13.112/28

Adjacent Prefix Sizes

/26 62 hosts /27 30 hosts /28 14 hosts /29 6 hosts /30 2 hosts