225.64.0.0/10

Multicast RFC 5771

Class D (Multicast) — /10 prefix — 4,194,302 usable hosts

Network Address
225.64.0.0
Broadcast Address
225.127.255.255
Subnet Mask
255.192.0.0
Usable Hosts
4,194,302
First Usable IP
225.64.0.1
Last Usable IP
225.127.255.254
Total IPs
4,194,304
Prefix Length
/10

Network address — the base address of the block (225.64.0.0). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 225.127.255.255 are delivered to every device in the subnet. Also reserved — not assignable.

Usable hosts — the 4,194,302 addresses between those two that you can assign to servers, VMs, or interfaces.

Subnet mask255.192.0.0 is the dotted-decimal equivalent of /10. Older tools and Cisco configs use this format instead of CIDR slash notation.

Full Details

CIDR Notation 225.64.0.0/10
Network Address 225.64.0.0
Broadcast Address 225.127.255.255
Subnet Mask 255.192.0.0
Wildcard Mask 0.63.255.255
Prefix Length /10
IP Address Class Class D (Multicast)
Total IP Addresses 4,194,304
Usable Host Addresses 4,194,302
First Usable IP 225.64.0.1
Last Usable IP 225.127.255.254
Network (Hex) 0xE1400000
Broadcast (Hex) 0xE17FFFFF
Governing RFC RFC 5771
Address Type Multicast

Binary Representation

Network Address
11100001 11100001.01000000.00000000.00000000
Subnet Mask
11111111.11000000.00000000.00000000

The first 10 bits (1s in the mask) identify the network. The remaining 22 bits identify hosts within the network.

Split into Equal Subnets

Split 225.64.0.0/10 into 2 equal /11 subnets (2,097,150 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 225.64.0.0/11 225.64.0.0 225.64.0.1 225.95.255.254 225.95.255.255 2,097,150
2 225.96.0.0/11 225.96.0.0 225.96.0.1 225.127.255.254 225.127.255.255 2,097,150

/10 Subnet Reference

Total IPs 4,194,304
Usable Hosts 4,194,302
Subnet Mask 255.192.0.0
Wildcard 0.63.255.255

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