228.226.140.128/25

Multicast RFC 5771

Class D (Multicast) — /25 prefix — 126 usable hosts

Network Address
228.226.140.128
Broadcast Address
228.226.140.255
Subnet Mask
255.255.255.128
Usable Hosts
126
First Usable IP
228.226.140.129
Last Usable IP
228.226.140.254
Total IPs
128
Prefix Length
/25

Network address — the base address of the block (228.226.140.128). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 228.226.140.255 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 228.226.140.128/25
Network Address 228.226.140.128
Broadcast Address 228.226.140.255
Subnet Mask 255.255.255.128
Wildcard Mask 0.0.0.127
Prefix Length /25
IP Address Class Class D (Multicast)
Total IP Addresses 128
Usable Host Addresses 126
First Usable IP 228.226.140.129
Last Usable IP 228.226.140.254
Network (Hex) 0xE4E28C80
Broadcast (Hex) 0xE4E28CFF
Governing RFC RFC 5771
Address Type Multicast

Binary Representation

Network Address
11100100.11100010.10001100 11100100.11100010.10001100.10000000
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 228.226.140.128/25 into 2 equal /26 subnets (62 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 228.226.140.128/26 228.226.140.128 228.226.140.129 228.226.140.190 228.226.140.191 62
2 228.226.140.192/26 228.226.140.192 228.226.140.193 228.226.140.254 228.226.140.255 62

IP Address Sample

Showing first 16 of 128 total IPs.

228.226.140.128 net
228.226.140.129
228.226.140.130
228.226.140.131
228.226.140.132
228.226.140.133
228.226.140.134
228.226.140.135
228.226.140.136
228.226.140.137
228.226.140.138
228.226.140.139
228.226.140.140
228.226.140.141
228.226.140.142
228.226.140.143
… 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