212.237.77.64/27

Public

Class C — /27 prefix — 30 usable hosts

Network Address
212.237.77.64
Broadcast Address
212.237.77.95
Subnet Mask
255.255.255.224
Usable Hosts
30
First Usable IP
212.237.77.65
Last Usable IP
212.237.77.94
Total IPs
32
Prefix Length
/27

Network address — the base address of the block (212.237.77.64). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 212.237.77.95 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 212.237.77.64/27
Network Address 212.237.77.64
Broadcast Address 212.237.77.95
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 212.237.77.65
Last Usable IP 212.237.77.94
Network (Hex) 0xD4ED4D40
Broadcast (Hex) 0xD4ED4D5F
Address Type Public / Globally Routable

Binary Representation

Network Address
11010100.11101101.01001101 11010100.11101101.01001101.01000000
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 212.237.77.64/27 into 2 equal /28 subnets (14 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 212.237.77.64/28 212.237.77.64 212.237.77.65 212.237.77.78 212.237.77.79 14
2 212.237.77.80/28 212.237.77.80 212.237.77.81 212.237.77.94 212.237.77.95 14

IP Address Sample

Showing first 16 of 32 total IPs.

212.237.77.64 net
212.237.77.65
212.237.77.66
212.237.77.67
212.237.77.68
212.237.77.69
212.237.77.70
212.237.77.71
212.237.77.72
212.237.77.73
212.237.77.74
212.237.77.75
212.237.77.76
212.237.77.77
212.237.77.78
212.237.77.79
… 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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