16.18.82.128/28

Public

Class A — /28 prefix — 14 usable hosts

Network Address

16.18.82.128

Broadcast Address

16.18.82.143

Subnet Mask

255.255.255.240

Usable Hosts

First Usable IP

16.18.82.129

Last Usable IP

16.18.82.142

Total IPs

Prefix Length

/28

Network address — the base address of the block (16.18.82.128). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 16.18.82.143 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	16.18.82.128/28
Network Address	16.18.82.128
Broadcast Address	16.18.82.143
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	16.18.82.129
Last Usable IP	16.18.82.142
Network (Hex)	0x10125280
Broadcast (Hex)	0x1012528F
Address Type	Public / Globally Routable

Binary Representation

Network Address

00010000.00010010.01010010 00010000.00010010.01010010.10000000

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 16.18.82.128/28 into 2 equal /29 subnets (6 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	16.18.82.128/29	16.18.82.128	16.18.82.129	16.18.82.134	16.18.82.135	6
2	16.18.82.136/29	16.18.82.136	16.18.82.137	16.18.82.142	16.18.82.143	6

Split 16.18.82.128/28 into 4 equal /30 subnets (2 usable hosts each).

#	CIDR	Network	First Usable	Last Usable	Broadcast	Hosts
1	16.18.82.128/30	16.18.82.128	16.18.82.129	16.18.82.130	16.18.82.131	2
2	16.18.82.132/30	16.18.82.132	16.18.82.133	16.18.82.134	16.18.82.135	2
3	16.18.82.136/30	16.18.82.136	16.18.82.137	16.18.82.138	16.18.82.139	2
4	16.18.82.140/30	16.18.82.140	16.18.82.141	16.18.82.142	16.18.82.143	2

All 16 IP Addresses in this Range

16.18.82.128 net

16.18.82.129

16.18.82.130

16.18.82.131

16.18.82.132

16.18.82.133

16.18.82.134

16.18.82.135

16.18.82.136

16.18.82.137

16.18.82.138

16.18.82.139

16.18.82.140

16.18.82.141

16.18.82.142

16.18.82.143 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 16.18.82.128/27 Sibling /28 block 16.18.82.144/28

Adjacent Prefix Sizes

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