15.128.62.32/28

Public

Class A — /28 prefix — 14 usable hosts

Network Address

15.128.62.32

Broadcast Address

15.128.62.47

Subnet Mask

255.255.255.240

Usable Hosts

First Usable IP

15.128.62.33

Last Usable IP

15.128.62.46

Total IPs

Prefix Length

/28

Network address — the base address of the block (15.128.62.32). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 15.128.62.47 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	15.128.62.32/28
Network Address	15.128.62.32
Broadcast Address	15.128.62.47
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	15.128.62.33
Last Usable IP	15.128.62.46
Network (Hex)	0x0F803E20
Broadcast (Hex)	0x0F803E2F
Address Type	Public / Globally Routable

Binary Representation

Network Address

00001111.10000000.00111110 00001111.10000000.00111110.00100000

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 15.128.62.32/28 into 2 equal /29 subnets (6 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	15.128.62.32/29	15.128.62.32	15.128.62.33	15.128.62.38	15.128.62.39	6
2	15.128.62.40/29	15.128.62.40	15.128.62.41	15.128.62.46	15.128.62.47	6

Split 15.128.62.32/28 into 4 equal /30 subnets (2 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	15.128.62.32/30	15.128.62.32	15.128.62.33	15.128.62.34	15.128.62.35	2
2	15.128.62.36/30	15.128.62.36	15.128.62.37	15.128.62.38	15.128.62.39	2
3	15.128.62.40/30	15.128.62.40	15.128.62.41	15.128.62.42	15.128.62.43	2
4	15.128.62.44/30	15.128.62.44	15.128.62.45	15.128.62.46	15.128.62.47	2

All 16 IP Addresses in this Range

15.128.62.32 net

15.128.62.33

15.128.62.34

15.128.62.35

15.128.62.36

15.128.62.37

15.128.62.38

15.128.62.39

15.128.62.40

15.128.62.41

15.128.62.42

15.128.62.43

15.128.62.44

15.128.62.45

15.128.62.46

15.128.62.47 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 15.128.62.32/27 Sibling /28 block 15.128.62.48/28

Adjacent Prefix Sizes

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