IPRangeExplorer

239.2.23.128/26

Multicast RFC 5771

Class D (Multicast) — /26 prefix — 62 usable hosts

Network Address
239.2.23.128
Broadcast Address
239.2.23.191
Subnet Mask
255.255.255.192
Usable Hosts
62
First Usable IP
239.2.23.129
Last Usable IP
239.2.23.190
Total IPs
64
Prefix Length
/26

Network address — the base address of the block (239.2.23.128). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 239.2.23.191 are delivered to every device in the subnet. Also reserved — not assignable.

Usable hosts — the 62 addresses between those two that you can assign to servers, VMs, or interfaces.

Subnet mask — 255.255.255.192 is the dotted-decimal equivalent of /26. Older tools and Cisco configs use this format instead of CIDR slash notation.

Full Details

CIDR Notation 239.2.23.128/26
Network Address 239.2.23.128
Broadcast Address 239.2.23.191
Subnet Mask 255.255.255.192
Wildcard Mask 0.0.0.63
Prefix Length /26
IP Address Class Class D (Multicast)
Total IP Addresses 64
Usable Host Addresses 62
First Usable IP 239.2.23.129
Last Usable IP 239.2.23.190
Network (Hex) 0xEF021780
Broadcast (Hex) 0xEF0217BF
Governing RFC RFC 5771
Address Type Multicast

Binary Representation

Network Address
11101111.00000010.00010111 11101111.00000010.00010111.10000000
Subnet Mask
11111111.11111111.11111111.11000000

The first 26 bits (1s in the mask) identify the network. The remaining 6 bits identify hosts within the network.

Split into Equal Subnets

Split 239.2.23.128/26 into 2 equal /27 subnets (30 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 239.2.23.128/27 239.2.23.128 239.2.23.129 239.2.23.158 239.2.23.159 30
2 239.2.23.160/27 239.2.23.160 239.2.23.161 239.2.23.190 239.2.23.191 30

IP Address Sample

Showing first 16 of 64 total IPs.

239.2.23.128 net
239.2.23.129
239.2.23.130
239.2.23.131
239.2.23.132
239.2.23.133
239.2.23.134
239.2.23.135
239.2.23.136
239.2.23.137
239.2.23.138
239.2.23.139
239.2.23.140
239.2.23.141
239.2.23.142
239.2.23.143
… 48 more IPs …

/26 Subnet Reference

Total IPs 64
Usable Hosts 62
Subnet Mask 255.255.255.192
Wildcard 0.0.0.63
Full /26 reference →

Related Ranges

Parent /25 block 239.2.23.128/25 Sibling /26 block 239.2.23.192/26

Adjacent Prefix Sizes

/24 254 hosts /25 126 hosts /26 62 hosts /27 30 hosts /28 14 hosts

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