8.239.163.0/25

Public

Class A — /25 prefix — 126 usable hosts

Network Address
8.239.163.0
Broadcast Address
8.239.163.127
Subnet Mask
255.255.255.128
Usable Hosts
126
First Usable IP
8.239.163.1
Last Usable IP
8.239.163.126
Total IPs
128
Prefix Length
/25

Network address — the base address of the block (8.239.163.0). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 8.239.163.127 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 8.239.163.0/25
Network Address 8.239.163.0
Broadcast Address 8.239.163.127
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 8.239.163.1
Last Usable IP 8.239.163.126
Network (Hex) 0x08EFA300
Broadcast (Hex) 0x08EFA37F
Address Type Public / Globally Routable

Binary Representation

Network Address
00001000.11101111.10100011 00001000.11101111.10100011.00000000
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 8.239.163.0/25 into 2 equal /26 subnets (62 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 8.239.163.0/26 8.239.163.0 8.239.163.1 8.239.163.62 8.239.163.63 62
2 8.239.163.64/26 8.239.163.64 8.239.163.65 8.239.163.126 8.239.163.127 62

IP Address Sample

Showing first 16 of 128 total IPs.

8.239.163.0 net
8.239.163.1
8.239.163.2
8.239.163.3
8.239.163.4
8.239.163.5
8.239.163.6
8.239.163.7
8.239.163.8
8.239.163.9
8.239.163.10
8.239.163.11
8.239.163.12
8.239.163.13
8.239.163.14
8.239.163.15
… 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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