23.91.88.64/27

Public

Class A — /27 prefix — 30 usable hosts

Network Address
23.91.88.64
Broadcast Address
23.91.88.95
Subnet Mask
255.255.255.224
Usable Hosts
30
First Usable IP
23.91.88.65
Last Usable IP
23.91.88.94
Total IPs
32
Prefix Length
/27

Network address — the base address of the block (23.91.88.64). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 23.91.88.95 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 23.91.88.64/27
Network Address 23.91.88.64
Broadcast Address 23.91.88.95
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 23.91.88.65
Last Usable IP 23.91.88.94
Network (Hex) 0x175B5840
Broadcast (Hex) 0x175B585F
Address Type Public / Globally Routable

Binary Representation

Network Address
00010111.01011011.01011000 00010111.01011011.01011000.01000000
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 23.91.88.64/27 into 2 equal /28 subnets (14 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 23.91.88.64/28 23.91.88.64 23.91.88.65 23.91.88.78 23.91.88.79 14
2 23.91.88.80/28 23.91.88.80 23.91.88.81 23.91.88.94 23.91.88.95 14

IP Address Sample

Showing first 16 of 32 total IPs.

23.91.88.64 net
23.91.88.65
23.91.88.66
23.91.88.67
23.91.88.68
23.91.88.69
23.91.88.70
23.91.88.71
23.91.88.72
23.91.88.73
23.91.88.74
23.91.88.75
23.91.88.76
23.91.88.77
23.91.88.78
23.91.88.79
… 16 more IPs …

/27 Subnet Reference

Total IPs 32
Usable Hosts 30
Subnet Mask 255.255.255.224
Wildcard 0.0.0.31

Calculate Another