175.231.91.64/27

Public

Class B — /27 prefix — 30 usable hosts

Network Address
175.231.91.64
Broadcast Address
175.231.91.95
Subnet Mask
255.255.255.224
Usable Hosts
30
First Usable IP
175.231.91.65
Last Usable IP
175.231.91.94
Total IPs
32
Prefix Length
/27

Network address — the base address of the block (175.231.91.64). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 175.231.91.95 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 175.231.91.64/27
Network Address 175.231.91.64
Broadcast Address 175.231.91.95
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 175.231.91.65
Last Usable IP 175.231.91.94
Network (Hex) 0xAFE75B40
Broadcast (Hex) 0xAFE75B5F
Address Type Public / Globally Routable

Binary Representation

Network Address
10101111.11100111.01011011 10101111.11100111.01011011.01000000
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 175.231.91.64/27 into 2 equal /28 subnets (14 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 175.231.91.64/28 175.231.91.64 175.231.91.65 175.231.91.78 175.231.91.79 14
2 175.231.91.80/28 175.231.91.80 175.231.91.81 175.231.91.94 175.231.91.95 14

IP Address Sample

Showing first 16 of 32 total IPs.

175.231.91.64 net
175.231.91.65
175.231.91.66
175.231.91.67
175.231.91.68
175.231.91.69
175.231.91.70
175.231.91.71
175.231.91.72
175.231.91.73
175.231.91.74
175.231.91.75
175.231.91.76
175.231.91.77
175.231.91.78
175.231.91.79
… 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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