100.45.41.32/27

Public

Class A — /27 prefix — 30 usable hosts

Network Address
100.45.41.32
Broadcast Address
100.45.41.63
Subnet Mask
255.255.255.224
Usable Hosts
30
First Usable IP
100.45.41.33
Last Usable IP
100.45.41.62
Total IPs
32
Prefix Length
/27

Network address — the base address of the block (100.45.41.32). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 100.45.41.63 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 100.45.41.32/27
Network Address 100.45.41.32
Broadcast Address 100.45.41.63
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 100.45.41.33
Last Usable IP 100.45.41.62
Network (Hex) 0x642D2920
Broadcast (Hex) 0x642D293F
Address Type Public / Globally Routable

Binary Representation

Network Address
01100100.00101101.00101001 01100100.00101101.00101001.00100000
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 100.45.41.32/27 into 2 equal /28 subnets (14 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 100.45.41.32/28 100.45.41.32 100.45.41.33 100.45.41.46 100.45.41.47 14
2 100.45.41.48/28 100.45.41.48 100.45.41.49 100.45.41.62 100.45.41.63 14

IP Address Sample

Showing first 16 of 32 total IPs.

100.45.41.32 net
100.45.41.33
100.45.41.34
100.45.41.35
100.45.41.36
100.45.41.37
100.45.41.38
100.45.41.39
100.45.41.40
100.45.41.41
100.45.41.42
100.45.41.43
100.45.41.44
100.45.41.45
100.45.41.46
100.45.41.47
… 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