IPRangeExplorer

2.9.2.144/28

Public

Class A — /28 prefix — 14 usable hosts

Network Address
2.9.2.144
Broadcast Address
2.9.2.159
Subnet Mask
255.255.255.240
Usable Hosts
14
First Usable IP
2.9.2.145
Last Usable IP
2.9.2.158
Total IPs
16
Prefix Length
/28

Network address — the base address of the block (2.9.2.144). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 2.9.2.159 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 2.9.2.144/28
Network Address 2.9.2.144
Broadcast Address 2.9.2.159
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 2.9.2.145
Last Usable IP 2.9.2.158
Network (Hex) 0x02090290
Broadcast (Hex) 0x0209029F
Address Type Public / Globally Routable

Binary Representation

Network Address
00000010.00001001.00000010 00000010.00001001.00000010.10010000
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 2.9.2.144/28 into 2 equal /29 subnets (6 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 2.9.2.144/29 2.9.2.144 2.9.2.145 2.9.2.150 2.9.2.151 6
2 2.9.2.152/29 2.9.2.152 2.9.2.153 2.9.2.158 2.9.2.159 6

All 16 IP Addresses in this Range

2.9.2.144 net
2.9.2.145
2.9.2.146
2.9.2.147
2.9.2.148
2.9.2.149
2.9.2.150
2.9.2.151
2.9.2.152
2.9.2.153
2.9.2.154
2.9.2.155
2.9.2.156
2.9.2.157
2.9.2.158
2.9.2.159 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 2.9.2.128/27 Sibling /28 block 2.9.2.128/28

Adjacent Prefix Sizes

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

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