100.62.45.0/27

Public

Class A — /27 prefix — 30 usable hosts

Network Address
100.62.45.0
Broadcast Address
100.62.45.31
Subnet Mask
255.255.255.224
Usable Hosts
30
First Usable IP
100.62.45.1
Last Usable IP
100.62.45.30
Total IPs
32
Prefix Length
/27

Network address — the base address of the block (100.62.45.0). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 100.62.45.31 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 100.62.45.0/27
Network Address 100.62.45.0
Broadcast Address 100.62.45.31
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 100.62.45.1
Last Usable IP 100.62.45.30
Network (Hex) 0x643E2D00
Broadcast (Hex) 0x643E2D1F
Address Type Public / Globally Routable

Binary Representation

Network Address
01100100.00111110.00101101 01100100.00111110.00101101.00000000
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 100.62.45.0/27 into 2 equal /28 subnets (14 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 100.62.45.0/28 100.62.45.0 100.62.45.1 100.62.45.14 100.62.45.15 14
2 100.62.45.16/28 100.62.45.16 100.62.45.17 100.62.45.30 100.62.45.31 14

IP Address Sample

Showing first 16 of 32 total IPs.

100.62.45.0 net
100.62.45.1
100.62.45.2
100.62.45.3
100.62.45.4
100.62.45.5
100.62.45.6
100.62.45.7
100.62.45.8
100.62.45.9
100.62.45.10
100.62.45.11
100.62.45.12
100.62.45.13
100.62.45.14
100.62.45.15
… 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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