40.166.91.0/27

Public

Class A — /27 prefix — 30 usable hosts

Network Address
40.166.91.0
Broadcast Address
40.166.91.31
Subnet Mask
255.255.255.224
Usable Hosts
30
First Usable IP
40.166.91.1
Last Usable IP
40.166.91.30
Total IPs
32
Prefix Length
/27

Network address — the base address of the block (40.166.91.0). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 40.166.91.31 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 40.166.91.0/27
Network Address 40.166.91.0
Broadcast Address 40.166.91.31
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 40.166.91.1
Last Usable IP 40.166.91.30
Network (Hex) 0x28A65B00
Broadcast (Hex) 0x28A65B1F
Address Type Public / Globally Routable

Binary Representation

Network Address
00101000.10100110.01011011 00101000.10100110.01011011.00000000
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 40.166.91.0/27 into 2 equal /28 subnets (14 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 40.166.91.0/28 40.166.91.0 40.166.91.1 40.166.91.14 40.166.91.15 14
2 40.166.91.16/28 40.166.91.16 40.166.91.17 40.166.91.30 40.166.91.31 14

IP Address Sample

Showing first 16 of 32 total IPs.

40.166.91.0 net
40.166.91.1
40.166.91.2
40.166.91.3
40.166.91.4
40.166.91.5
40.166.91.6
40.166.91.7
40.166.91.8
40.166.91.9
40.166.91.10
40.166.91.11
40.166.91.12
40.166.91.13
40.166.91.14
40.166.91.15
… 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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