102.159.72.64/27

Public

Class A — /27 prefix — 30 usable hosts

Network Address
102.159.72.64
Broadcast Address
102.159.72.95
Subnet Mask
255.255.255.224
Usable Hosts
30
First Usable IP
102.159.72.65
Last Usable IP
102.159.72.94
Total IPs
32
Prefix Length
/27

Network address — the base address of the block (102.159.72.64). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 102.159.72.95 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 102.159.72.64/27
Network Address 102.159.72.64
Broadcast Address 102.159.72.95
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 102.159.72.65
Last Usable IP 102.159.72.94
Network (Hex) 0x669F4840
Broadcast (Hex) 0x669F485F
Address Type Public / Globally Routable

Binary Representation

Network Address
01100110.10011111.01001000 01100110.10011111.01001000.01000000
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 102.159.72.64/27 into 2 equal /28 subnets (14 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 102.159.72.64/28 102.159.72.64 102.159.72.65 102.159.72.78 102.159.72.79 14
2 102.159.72.80/28 102.159.72.80 102.159.72.81 102.159.72.94 102.159.72.95 14

IP Address Sample

Showing first 16 of 32 total IPs.

102.159.72.64 net
102.159.72.65
102.159.72.66
102.159.72.67
102.159.72.68
102.159.72.69
102.159.72.70
102.159.72.71
102.159.72.72
102.159.72.73
102.159.72.74
102.159.72.75
102.159.72.76
102.159.72.77
102.159.72.78
102.159.72.79
… 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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