185.4.0.64/27

Public

Class B — /27 prefix — 30 usable hosts

Network Address
185.4.0.64
Broadcast Address
185.4.0.95
Subnet Mask
255.255.255.224
Usable Hosts
30
First Usable IP
185.4.0.65
Last Usable IP
185.4.0.94
Total IPs
32
Prefix Length
/27

Network address — the base address of the block (185.4.0.64). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 185.4.0.95 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 185.4.0.64/27
Network Address 185.4.0.64
Broadcast Address 185.4.0.95
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 185.4.0.65
Last Usable IP 185.4.0.94
Network (Hex) 0xB9040040
Broadcast (Hex) 0xB904005F
Address Type Public / Globally Routable

Binary Representation

Network Address
10111001.00000100.00000000 10111001.00000100.00000000.01000000
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 185.4.0.64/27 into 2 equal /28 subnets (14 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 185.4.0.64/28 185.4.0.64 185.4.0.65 185.4.0.78 185.4.0.79 14
2 185.4.0.80/28 185.4.0.80 185.4.0.81 185.4.0.94 185.4.0.95 14

IP Address Sample

Showing first 16 of 32 total IPs.

185.4.0.64 net
185.4.0.65
185.4.0.66
185.4.0.67
185.4.0.68
185.4.0.69
185.4.0.70
185.4.0.71
185.4.0.72
185.4.0.73
185.4.0.74
185.4.0.75
185.4.0.76
185.4.0.77
185.4.0.78
185.4.0.79
… 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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