11.209.82.0/28

Public

Class A — /28 prefix — 14 usable hosts

Network Address

11.209.82.0

Broadcast Address

11.209.82.15

Subnet Mask

255.255.255.240

Usable Hosts

First Usable IP

11.209.82.1

Last Usable IP

11.209.82.14

Total IPs

Prefix Length

/28

Network address — the base address of the block (11.209.82.0). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 11.209.82.15 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	11.209.82.0/28
Network Address	11.209.82.0
Broadcast Address	11.209.82.15
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	11.209.82.1
Last Usable IP	11.209.82.14
Network (Hex)	0x0BD15200
Broadcast (Hex)	0x0BD1520F
Address Type	Public / Globally Routable

Binary Representation

Network Address

00001011.11010001.01010010 00001011.11010001.01010010.00000000

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 11.209.82.0/28 into 2 equal /29 subnets (6 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	11.209.82.0/29	11.209.82.0	11.209.82.1	11.209.82.6	11.209.82.7	6
2	11.209.82.8/29	11.209.82.8	11.209.82.9	11.209.82.14	11.209.82.15	6

Split 11.209.82.0/28 into 4 equal /30 subnets (2 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	11.209.82.0/30	11.209.82.0	11.209.82.1	11.209.82.2	11.209.82.3	2
2	11.209.82.4/30	11.209.82.4	11.209.82.5	11.209.82.6	11.209.82.7	2
3	11.209.82.8/30	11.209.82.8	11.209.82.9	11.209.82.10	11.209.82.11	2
4	11.209.82.12/30	11.209.82.12	11.209.82.13	11.209.82.14	11.209.82.15	2

All 16 IP Addresses in this Range

11.209.82.0 net

11.209.82.1

11.209.82.2

11.209.82.3

11.209.82.4

11.209.82.5

11.209.82.6

11.209.82.7

11.209.82.8

11.209.82.9

11.209.82.10

11.209.82.11

11.209.82.12

11.209.82.13

11.209.82.14

11.209.82.15 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 11.209.82.0/27 Sibling /28 block 11.209.82.16/28

Adjacent Prefix Sizes

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