212.237.81.32/27

Public

Class C — /27 prefix — 30 usable hosts

Network Address
212.237.81.32
Broadcast Address
212.237.81.63
Subnet Mask
255.255.255.224
Usable Hosts
30
First Usable IP
212.237.81.33
Last Usable IP
212.237.81.62
Total IPs
32
Prefix Length
/27

Network address — the base address of the block (212.237.81.32). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 212.237.81.63 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 212.237.81.32/27
Network Address 212.237.81.32
Broadcast Address 212.237.81.63
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 212.237.81.33
Last Usable IP 212.237.81.62
Network (Hex) 0xD4ED5120
Broadcast (Hex) 0xD4ED513F
Address Type Public / Globally Routable

Binary Representation

Network Address
11010100.11101101.01010001 11010100.11101101.01010001.00100000
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 212.237.81.32/27 into 2 equal /28 subnets (14 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 212.237.81.32/28 212.237.81.32 212.237.81.33 212.237.81.46 212.237.81.47 14
2 212.237.81.48/28 212.237.81.48 212.237.81.49 212.237.81.62 212.237.81.63 14

IP Address Sample

Showing first 16 of 32 total IPs.

212.237.81.32 net
212.237.81.33
212.237.81.34
212.237.81.35
212.237.81.36
212.237.81.37
212.237.81.38
212.237.81.39
212.237.81.40
212.237.81.41
212.237.81.42
212.237.81.43
212.237.81.44
212.237.81.45
212.237.81.46
212.237.81.47
… 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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