40.166.87.0/27

Public

Class A — /27 prefix — 30 usable hosts

Network Address
40.166.87.0
Broadcast Address
40.166.87.31
Subnet Mask
255.255.255.224
Usable Hosts
30
First Usable IP
40.166.87.1
Last Usable IP
40.166.87.30
Total IPs
32
Prefix Length
/27

Network address — the base address of the block (40.166.87.0). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 40.166.87.31 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 40.166.87.0/27
Network Address 40.166.87.0
Broadcast Address 40.166.87.31
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 40.166.87.1
Last Usable IP 40.166.87.30
Network (Hex) 0x28A65700
Broadcast (Hex) 0x28A6571F
Address Type Public / Globally Routable

Binary Representation

Network Address
00101000.10100110.01010111 00101000.10100110.01010111.00000000
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 40.166.87.0/27 into 2 equal /28 subnets (14 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 40.166.87.0/28 40.166.87.0 40.166.87.1 40.166.87.14 40.166.87.15 14
2 40.166.87.16/28 40.166.87.16 40.166.87.17 40.166.87.30 40.166.87.31 14

IP Address Sample

Showing first 16 of 32 total IPs.

40.166.87.0 net
40.166.87.1
40.166.87.2
40.166.87.3
40.166.87.4
40.166.87.5
40.166.87.6
40.166.87.7
40.166.87.8
40.166.87.9
40.166.87.10
40.166.87.11
40.166.87.12
40.166.87.13
40.166.87.14
40.166.87.15
… 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