201.156.165.64/27

Public

Class C — /27 prefix — 30 usable hosts

Network Address
201.156.165.64
Broadcast Address
201.156.165.95
Subnet Mask
255.255.255.224
Usable Hosts
30
First Usable IP
201.156.165.65
Last Usable IP
201.156.165.94
Total IPs
32
Prefix Length
/27

Network address — the base address of the block (201.156.165.64). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 201.156.165.95 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 201.156.165.64/27
Network Address 201.156.165.64
Broadcast Address 201.156.165.95
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 201.156.165.65
Last Usable IP 201.156.165.94
Network (Hex) 0xC99CA540
Broadcast (Hex) 0xC99CA55F
Address Type Public / Globally Routable

Binary Representation

Network Address
11001001.10011100.10100101 11001001.10011100.10100101.01000000
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 201.156.165.64/27 into 2 equal /28 subnets (14 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 201.156.165.64/28 201.156.165.64 201.156.165.65 201.156.165.78 201.156.165.79 14
2 201.156.165.80/28 201.156.165.80 201.156.165.81 201.156.165.94 201.156.165.95 14

IP Address Sample

Showing first 16 of 32 total IPs.

201.156.165.64 net
201.156.165.65
201.156.165.66
201.156.165.67
201.156.165.68
201.156.165.69
201.156.165.70
201.156.165.71
201.156.165.72
201.156.165.73
201.156.165.74
201.156.165.75
201.156.165.76
201.156.165.77
201.156.165.78
201.156.165.79
… 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