187.151.89.32/27

Public

Class B — /27 prefix — 30 usable hosts

Network Address
187.151.89.32
Broadcast Address
187.151.89.63
Subnet Mask
255.255.255.224
Usable Hosts
30
First Usable IP
187.151.89.33
Last Usable IP
187.151.89.62
Total IPs
32
Prefix Length
/27

Network address — the base address of the block (187.151.89.32). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 187.151.89.63 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 187.151.89.32/27
Network Address 187.151.89.32
Broadcast Address 187.151.89.63
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 187.151.89.33
Last Usable IP 187.151.89.62
Network (Hex) 0xBB975920
Broadcast (Hex) 0xBB97593F
Address Type Public / Globally Routable

Binary Representation

Network Address
10111011.10010111.01011001 10111011.10010111.01011001.00100000
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 187.151.89.32/27 into 2 equal /28 subnets (14 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 187.151.89.32/28 187.151.89.32 187.151.89.33 187.151.89.46 187.151.89.47 14
2 187.151.89.48/28 187.151.89.48 187.151.89.49 187.151.89.62 187.151.89.63 14

IP Address Sample

Showing first 16 of 32 total IPs.

187.151.89.32 net
187.151.89.33
187.151.89.34
187.151.89.35
187.151.89.36
187.151.89.37
187.151.89.38
187.151.89.39
187.151.89.40
187.151.89.41
187.151.89.42
187.151.89.43
187.151.89.44
187.151.89.45
187.151.89.46
187.151.89.47
… 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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