224.76.136.128/25

Multicast RFC 5771

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

Network Address
224.76.136.128
Broadcast Address
224.76.136.255
Subnet Mask
255.255.255.128
Usable Hosts
126
First Usable IP
224.76.136.129
Last Usable IP
224.76.136.254
Total IPs
128
Prefix Length
/25

Network address — the base address of the block (224.76.136.128). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 224.76.136.255 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 224.76.136.128/25
Network Address 224.76.136.128
Broadcast Address 224.76.136.255
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 224.76.136.129
Last Usable IP 224.76.136.254
Network (Hex) 0xE04C8880
Broadcast (Hex) 0xE04C88FF
Governing RFC RFC 5771
Address Type Multicast

Binary Representation

Network Address
11100000.01001100.10001000 11100000.01001100.10001000.10000000
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 224.76.136.128/25 into 2 equal /26 subnets (62 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 224.76.136.128/26 224.76.136.128 224.76.136.129 224.76.136.190 224.76.136.191 62
2 224.76.136.192/26 224.76.136.192 224.76.136.193 224.76.136.254 224.76.136.255 62

IP Address Sample

Showing first 16 of 128 total IPs.

224.76.136.128 net
224.76.136.129
224.76.136.130
224.76.136.131
224.76.136.132
224.76.136.133
224.76.136.134
224.76.136.135
224.76.136.136
224.76.136.137
224.76.136.138
224.76.136.139
224.76.136.140
224.76.136.141
224.76.136.142
224.76.136.143
… 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