187.151.33.0/27

Public

Class B — /27 prefix — 30 usable hosts

Network Address
187.151.33.0
Broadcast Address
187.151.33.31
Subnet Mask
255.255.255.224
Usable Hosts
30
First Usable IP
187.151.33.1
Last Usable IP
187.151.33.30
Total IPs
32
Prefix Length
/27

Network address — the base address of the block (187.151.33.0). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 187.151.33.31 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 187.151.33.0/27
Network Address 187.151.33.0
Broadcast Address 187.151.33.31
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 187.151.33.1
Last Usable IP 187.151.33.30
Network (Hex) 0xBB972100
Broadcast (Hex) 0xBB97211F
Address Type Public / Globally Routable

Binary Representation

Network Address
10111011.10010111.00100001 10111011.10010111.00100001.00000000
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 187.151.33.0/27 into 2 equal /28 subnets (14 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 187.151.33.0/28 187.151.33.0 187.151.33.1 187.151.33.14 187.151.33.15 14
2 187.151.33.16/28 187.151.33.16 187.151.33.17 187.151.33.30 187.151.33.31 14

IP Address Sample

Showing first 16 of 32 total IPs.

187.151.33.0 net
187.151.33.1
187.151.33.2
187.151.33.3
187.151.33.4
187.151.33.5
187.151.33.6
187.151.33.7
187.151.33.8
187.151.33.9
187.151.33.10
187.151.33.11
187.151.33.12
187.151.33.13
187.151.33.14
187.151.33.15
… 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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