157.72.67.64/27

Public

Class B — /27 prefix — 30 usable hosts

Network Address
157.72.67.64
Broadcast Address
157.72.67.95
Subnet Mask
255.255.255.224
Usable Hosts
30
First Usable IP
157.72.67.65
Last Usable IP
157.72.67.94
Total IPs
32
Prefix Length
/27

Network address — the base address of the block (157.72.67.64). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 157.72.67.95 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 157.72.67.64/27
Network Address 157.72.67.64
Broadcast Address 157.72.67.95
Subnet Mask 255.255.255.224
Wildcard Mask 0.0.0.31
Prefix Length /27
IP Address Class Class B
Total IP Addresses 32
Usable Host Addresses 30
First Usable IP 157.72.67.65
Last Usable IP 157.72.67.94
Network (Hex) 0x9D484340
Broadcast (Hex) 0x9D48435F
Address Type Public / Globally Routable

Binary Representation

Network Address
10011101.01001000.01000011 10011101.01001000.01000011.01000000
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 157.72.67.64/27 into 2 equal /28 subnets (14 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 157.72.67.64/28 157.72.67.64 157.72.67.65 157.72.67.78 157.72.67.79 14
2 157.72.67.80/28 157.72.67.80 157.72.67.81 157.72.67.94 157.72.67.95 14

IP Address Sample

Showing first 16 of 32 total IPs.

157.72.67.64 net
157.72.67.65
157.72.67.66
157.72.67.67
157.72.67.68
157.72.67.69
157.72.67.70
157.72.67.71
157.72.67.72
157.72.67.73
157.72.67.74
157.72.67.75
157.72.67.76
157.72.67.77
157.72.67.78
157.72.67.79
… 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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