136.9.57.64/27

Public

Class B — /27 prefix — 30 usable hosts

Network Address
136.9.57.64
Broadcast Address
136.9.57.95
Subnet Mask
255.255.255.224
Usable Hosts
30
First Usable IP
136.9.57.65
Last Usable IP
136.9.57.94
Total IPs
32
Prefix Length
/27

Network address — the base address of the block (136.9.57.64). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 136.9.57.95 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 136.9.57.64/27
Network Address 136.9.57.64
Broadcast Address 136.9.57.95
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 136.9.57.65
Last Usable IP 136.9.57.94
Network (Hex) 0x88093940
Broadcast (Hex) 0x8809395F
Address Type Public / Globally Routable

Binary Representation

Network Address
10001000.00001001.00111001 10001000.00001001.00111001.01000000
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 136.9.57.64/27 into 2 equal /28 subnets (14 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 136.9.57.64/28 136.9.57.64 136.9.57.65 136.9.57.78 136.9.57.79 14
2 136.9.57.80/28 136.9.57.80 136.9.57.81 136.9.57.94 136.9.57.95 14

IP Address Sample

Showing first 16 of 32 total IPs.

136.9.57.64 net
136.9.57.65
136.9.57.66
136.9.57.67
136.9.57.68
136.9.57.69
136.9.57.70
136.9.57.71
136.9.57.72
136.9.57.73
136.9.57.74
136.9.57.75
136.9.57.76
136.9.57.77
136.9.57.78
136.9.57.79
… 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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