192.168.2.64/27

Private (RFC 1918) RFC 1918

Class C — /27 prefix — 30 usable hosts

Network Address
192.168.2.64
Broadcast Address
192.168.2.95
Subnet Mask
255.255.255.224
Usable Hosts
30
First Usable IP
192.168.2.65
Last Usable IP
192.168.2.94
Total IPs
32
Prefix Length
/27

Network address — the base address of the block (192.168.2.64). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 192.168.2.95 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 192.168.2.64/27
Network Address 192.168.2.64
Broadcast Address 192.168.2.95
Subnet Mask 255.255.255.224
Wildcard Mask 0.0.0.31
Prefix Length /27
IP Address Class Class C
Total IP Addresses 32
Usable Host Addresses 30
First Usable IP 192.168.2.65
Last Usable IP 192.168.2.94
Network (Hex) 0xC0A80240
Broadcast (Hex) 0xC0A8025F
Governing RFC RFC 1918
Address Type Private (RFC 1918)

Binary Representation

Network Address
11000000.10101000.00000010 11000000.10101000.00000010.01000000
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 192.168.2.64/27 into 2 equal /28 subnets (14 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 192.168.2.64/28 192.168.2.64 192.168.2.65 192.168.2.78 192.168.2.79 14
2 192.168.2.80/28 192.168.2.80 192.168.2.81 192.168.2.94 192.168.2.95 14

IP Address Sample

Showing first 16 of 32 total IPs.

192.168.2.64 net
192.168.2.65
192.168.2.66
192.168.2.67
192.168.2.68
192.168.2.69
192.168.2.70
192.168.2.71
192.168.2.72
192.168.2.73
192.168.2.74
192.168.2.75
192.168.2.76
192.168.2.77
192.168.2.78
192.168.2.79
… 16 more IPs …

/27 Subnet Reference

Total IPs 32
Usable Hosts 30
Subnet Mask 255.255.255.224
Wildcard 0.0.0.31

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