171.100.109.64/27

Public

Class B — /27 prefix — 30 usable hosts

Network Address
171.100.109.64
Broadcast Address
171.100.109.95
Subnet Mask
255.255.255.224
Usable Hosts
30
First Usable IP
171.100.109.65
Last Usable IP
171.100.109.94
Total IPs
32
Prefix Length
/27

Network address — the base address of the block (171.100.109.64). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 171.100.109.95 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 171.100.109.64/27
Network Address 171.100.109.64
Broadcast Address 171.100.109.95
Subnet Mask 255.255.255.224
Wildcard Mask 0.0.0.31
Prefix Length /27
IP Address Class Class B
Total IP Addresses 32
Usable Host Addresses 30
First Usable IP 171.100.109.65
Last Usable IP 171.100.109.94
Network (Hex) 0xAB646D40
Broadcast (Hex) 0xAB646D5F
Address Type Public / Globally Routable

Binary Representation

Network Address
10101011.01100100.01101101 10101011.01100100.01101101.01000000
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 171.100.109.64/27 into 2 equal /28 subnets (14 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 171.100.109.64/28 171.100.109.64 171.100.109.65 171.100.109.78 171.100.109.79 14
2 171.100.109.80/28 171.100.109.80 171.100.109.81 171.100.109.94 171.100.109.95 14

IP Address Sample

Showing first 16 of 32 total IPs.

171.100.109.64 net
171.100.109.65
171.100.109.66
171.100.109.67
171.100.109.68
171.100.109.69
171.100.109.70
171.100.109.71
171.100.109.72
171.100.109.73
171.100.109.74
171.100.109.75
171.100.109.76
171.100.109.77
171.100.109.78
171.100.109.79
… 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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