102.159.43.128/27

Public

Class A — /27 prefix — 30 usable hosts

Network Address
102.159.43.128
Broadcast Address
102.159.43.159
Subnet Mask
255.255.255.224
Usable Hosts
30
First Usable IP
102.159.43.129
Last Usable IP
102.159.43.158
Total IPs
32
Prefix Length
/27

Network address — the base address of the block (102.159.43.128). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 102.159.43.159 are delivered to every device in the subnet. Also reserved — not assignable.

Usable hosts — the 30 addresses between those two that you can assign to servers, VMs, or interfaces.

Subnet mask255.255.255.224 is the dotted-decimal equivalent of /27. Older tools and Cisco configs use this format instead of CIDR slash notation.

Full Details

CIDR Notation 102.159.43.128/27
Network Address 102.159.43.128
Broadcast Address 102.159.43.159
Subnet Mask 255.255.255.224
Wildcard Mask 0.0.0.31
Prefix Length /27
IP Address Class Class A
Total IP Addresses 32
Usable Host Addresses 30
First Usable IP 102.159.43.129
Last Usable IP 102.159.43.158
Network (Hex) 0x669F2B80
Broadcast (Hex) 0x669F2B9F
Address Type Public / Globally Routable

Binary Representation

Network Address
01100110.10011111.00101011 01100110.10011111.00101011.10000000
Subnet Mask
11111111.11111111.11111111.11100000

The first 27 bits (1s in the mask) identify the network. The remaining 5 bits identify hosts within the network.

Split into Equal Subnets

Split 102.159.43.128/27 into 2 equal /28 subnets (14 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 102.159.43.128/28 102.159.43.128 102.159.43.129 102.159.43.142 102.159.43.143 14
2 102.159.43.144/28 102.159.43.144 102.159.43.145 102.159.43.158 102.159.43.159 14

IP Address Sample

Showing first 16 of 32 total IPs.

102.159.43.128 net
102.159.43.129
102.159.43.130
102.159.43.131
102.159.43.132
102.159.43.133
102.159.43.134
102.159.43.135
102.159.43.136
102.159.43.137
102.159.43.138
102.159.43.139
102.159.43.140
102.159.43.141
102.159.43.142
102.159.43.143
… 16 more IPs …

/27 Subnet Reference

Total IPs 32
Usable Hosts 30
Subnet Mask 255.255.255.224
Wildcard 0.0.0.31

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