171.237.155.0/27

Public

Class B — /27 prefix — 30 usable hosts

Network Address
171.237.155.0
Broadcast Address
171.237.155.31
Subnet Mask
255.255.255.224
Usable Hosts
30
First Usable IP
171.237.155.1
Last Usable IP
171.237.155.30
Total IPs
32
Prefix Length
/27

Network address — the base address of the block (171.237.155.0). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 171.237.155.31 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 171.237.155.0/27
Network Address 171.237.155.0
Broadcast Address 171.237.155.31
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 171.237.155.1
Last Usable IP 171.237.155.30
Network (Hex) 0xABED9B00
Broadcast (Hex) 0xABED9B1F
Address Type Public / Globally Routable

Binary Representation

Network Address
10101011.11101101.10011011 10101011.11101101.10011011.00000000
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 171.237.155.0/27 into 2 equal /28 subnets (14 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 171.237.155.0/28 171.237.155.0 171.237.155.1 171.237.155.14 171.237.155.15 14
2 171.237.155.16/28 171.237.155.16 171.237.155.17 171.237.155.30 171.237.155.31 14

IP Address Sample

Showing first 16 of 32 total IPs.

171.237.155.0 net
171.237.155.1
171.237.155.2
171.237.155.3
171.237.155.4
171.237.155.5
171.237.155.6
171.237.155.7
171.237.155.8
171.237.155.9
171.237.155.10
171.237.155.11
171.237.155.12
171.237.155.13
171.237.155.14
171.237.155.15
… 16 more IPs …

/27 Subnet Reference

Total IPs 32
Usable Hosts 30
Subnet Mask 255.255.255.224
Wildcard 0.0.0.31

Calculate Another