54.54.155.0/25

Public

Class A — /25 prefix — 126 usable hosts

Network Address
54.54.155.0
Broadcast Address
54.54.155.127
Subnet Mask
255.255.255.128
Usable Hosts
126
First Usable IP
54.54.155.1
Last Usable IP
54.54.155.126
Total IPs
128
Prefix Length
/25

Network address — the base address of the block (54.54.155.0). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 54.54.155.127 are delivered to every device in the subnet. Also reserved — not assignable.

Usable hosts — the 126 addresses between those two that you can assign to servers, VMs, or interfaces.

Subnet mask255.255.255.128 is the dotted-decimal equivalent of /25. Older tools and Cisco configs use this format instead of CIDR slash notation.

Full Details

CIDR Notation 54.54.155.0/25
Network Address 54.54.155.0
Broadcast Address 54.54.155.127
Subnet Mask 255.255.255.128
Wildcard Mask 0.0.0.127
Prefix Length /25
IP Address Class Class A
Total IP Addresses 128
Usable Host Addresses 126
First Usable IP 54.54.155.1
Last Usable IP 54.54.155.126
Network (Hex) 0x36369B00
Broadcast (Hex) 0x36369B7F
Address Type Public / Globally Routable

Binary Representation

Network Address
00110110.00110110.10011011 00110110.00110110.10011011.00000000
Subnet Mask
11111111.11111111.11111111.10000000

The first 25 bits (1s in the mask) identify the network. The remaining 7 bits identify hosts within the network.

Split into Equal Subnets

Split 54.54.155.0/25 into 2 equal /26 subnets (62 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 54.54.155.0/26 54.54.155.0 54.54.155.1 54.54.155.62 54.54.155.63 62
2 54.54.155.64/26 54.54.155.64 54.54.155.65 54.54.155.126 54.54.155.127 62

IP Address Sample

Showing first 16 of 128 total IPs.

54.54.155.0 net
54.54.155.1
54.54.155.2
54.54.155.3
54.54.155.4
54.54.155.5
54.54.155.6
54.54.155.7
54.54.155.8
54.54.155.9
54.54.155.10
54.54.155.11
54.54.155.12
54.54.155.13
54.54.155.14
54.54.155.15
… 112 more IPs …

/25 Subnet Reference

Total IPs 128
Usable Hosts 126
Subnet Mask 255.255.255.128
Wildcard 0.0.0.127

Calculate Another