203.42.58.0/27

Public

Class C — /27 prefix — 30 usable hosts

Network Address
203.42.58.0
Broadcast Address
203.42.58.31
Subnet Mask
255.255.255.224
Usable Hosts
30
First Usable IP
203.42.58.1
Last Usable IP
203.42.58.30
Total IPs
32
Prefix Length
/27

Network address — the base address of the block (203.42.58.0). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 203.42.58.31 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 203.42.58.0/27
Network Address 203.42.58.0
Broadcast Address 203.42.58.31
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 203.42.58.1
Last Usable IP 203.42.58.30
Network (Hex) 0xCB2A3A00
Broadcast (Hex) 0xCB2A3A1F
Address Type Public / Globally Routable

Binary Representation

Network Address
11001011.00101010.00111010 11001011.00101010.00111010.00000000
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 203.42.58.0/27 into 2 equal /28 subnets (14 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 203.42.58.0/28 203.42.58.0 203.42.58.1 203.42.58.14 203.42.58.15 14
2 203.42.58.16/28 203.42.58.16 203.42.58.17 203.42.58.30 203.42.58.31 14

IP Address Sample

Showing first 16 of 32 total IPs.

203.42.58.0 net
203.42.58.1
203.42.58.2
203.42.58.3
203.42.58.4
203.42.58.5
203.42.58.6
203.42.58.7
203.42.58.8
203.42.58.9
203.42.58.10
203.42.58.11
203.42.58.12
203.42.58.13
203.42.58.14
203.42.58.15
… 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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