230.128.1.96/27

Multicast RFC 5771

Class D (Multicast) — /27 prefix — 30 usable hosts

Network Address
230.128.1.96
Broadcast Address
230.128.1.127
Subnet Mask
255.255.255.224
Usable Hosts
30
First Usable IP
230.128.1.97
Last Usable IP
230.128.1.126
Total IPs
32
Prefix Length
/27

Network address — the base address of the block (230.128.1.96). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 230.128.1.127 are delivered to every device in the subnet. Also reserved — not assignable.

Usable hosts — the 30 addresses between those two that you can assign to servers, VMs, or interfaces.

Subnet mask255.255.255.224 is the dotted-decimal equivalent of /27. Older tools and Cisco configs use this format instead of CIDR slash notation.

Full Details

CIDR Notation 230.128.1.96/27
Network Address 230.128.1.96
Broadcast Address 230.128.1.127
Subnet Mask 255.255.255.224
Wildcard Mask 0.0.0.31
Prefix Length /27
IP Address Class Class D (Multicast)
Total IP Addresses 32
Usable Host Addresses 30
First Usable IP 230.128.1.97
Last Usable IP 230.128.1.126
Network (Hex) 0xE6800160
Broadcast (Hex) 0xE680017F
Governing RFC RFC 5771
Address Type Multicast

Binary Representation

Network Address
11100110.10000000.00000001 11100110.10000000.00000001.01100000
Subnet Mask
11111111.11111111.11111111.11100000

The first 27 bits (1s in the mask) identify the network. The remaining 5 bits identify hosts within the network.

Split into Equal Subnets

Split 230.128.1.96/27 into 2 equal /28 subnets (14 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 230.128.1.96/28 230.128.1.96 230.128.1.97 230.128.1.110 230.128.1.111 14
2 230.128.1.112/28 230.128.1.112 230.128.1.113 230.128.1.126 230.128.1.127 14

IP Address Sample

Showing first 16 of 32 total IPs.

230.128.1.96 net
230.128.1.97
230.128.1.98
230.128.1.99
230.128.1.100
230.128.1.101
230.128.1.102
230.128.1.103
230.128.1.104
230.128.1.105
230.128.1.106
230.128.1.107
230.128.1.108
230.128.1.109
230.128.1.110
230.128.1.111
… 16 more IPs …

/27 Subnet Reference

Total IPs 32
Usable Hosts 30
Subnet Mask 255.255.255.224
Wildcard 0.0.0.31

Calculate Another