51.236.167.0/25

Public

Class A — /25 prefix — 126 usable hosts

Network Address
51.236.167.0
Broadcast Address
51.236.167.127
Subnet Mask
255.255.255.128
Usable Hosts
126
First Usable IP
51.236.167.1
Last Usable IP
51.236.167.126
Total IPs
128
Prefix Length
/25

Network address — the base address of the block (51.236.167.0). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 51.236.167.127 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 51.236.167.0/25
Network Address 51.236.167.0
Broadcast Address 51.236.167.127
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 51.236.167.1
Last Usable IP 51.236.167.126
Network (Hex) 0x33ECA700
Broadcast (Hex) 0x33ECA77F
Address Type Public / Globally Routable

Binary Representation

Network Address
00110011.11101100.10100111 00110011.11101100.10100111.00000000
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 51.236.167.0/25 into 2 equal /26 subnets (62 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 51.236.167.0/26 51.236.167.0 51.236.167.1 51.236.167.62 51.236.167.63 62
2 51.236.167.64/26 51.236.167.64 51.236.167.65 51.236.167.126 51.236.167.127 62

IP Address Sample

Showing first 16 of 128 total IPs.

51.236.167.0 net
51.236.167.1
51.236.167.2
51.236.167.3
51.236.167.4
51.236.167.5
51.236.167.6
51.236.167.7
51.236.167.8
51.236.167.9
51.236.167.10
51.236.167.11
51.236.167.12
51.236.167.13
51.236.167.14
51.236.167.15
… 112 more IPs …

/25 Subnet Reference

Total IPs 128
Usable Hosts 126
Subnet Mask 255.255.255.128
Wildcard 0.0.0.127

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