204.76.138.0/25

Public

Class C — /25 prefix — 126 usable hosts

Network Address
204.76.138.0
Broadcast Address
204.76.138.127
Subnet Mask
255.255.255.128
Usable Hosts
126
First Usable IP
204.76.138.1
Last Usable IP
204.76.138.126
Total IPs
128
Prefix Length
/25

Network address — the base address of the block (204.76.138.0). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 204.76.138.127 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 204.76.138.0/25
Network Address 204.76.138.0
Broadcast Address 204.76.138.127
Subnet Mask 255.255.255.128
Wildcard Mask 0.0.0.127
Prefix Length /25
IP Address Class Class C
Total IP Addresses 128
Usable Host Addresses 126
First Usable IP 204.76.138.1
Last Usable IP 204.76.138.126
Network (Hex) 0xCC4C8A00
Broadcast (Hex) 0xCC4C8A7F
Address Type Public / Globally Routable

Binary Representation

Network Address
11001100.01001100.10001010 11001100.01001100.10001010.00000000
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 204.76.138.0/25 into 2 equal /26 subnets (62 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 204.76.138.0/26 204.76.138.0 204.76.138.1 204.76.138.62 204.76.138.63 62
2 204.76.138.64/26 204.76.138.64 204.76.138.65 204.76.138.126 204.76.138.127 62

IP Address Sample

Showing first 16 of 128 total IPs.

204.76.138.0 net
204.76.138.1
204.76.138.2
204.76.138.3
204.76.138.4
204.76.138.5
204.76.138.6
204.76.138.7
204.76.138.8
204.76.138.9
204.76.138.10
204.76.138.11
204.76.138.12
204.76.138.13
204.76.138.14
204.76.138.15
… 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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