255.19.43.0/27

Public

Class E (Reserved) — /27 prefix — 30 usable hosts

Network Address
255.19.43.0
Broadcast Address
255.19.43.31
Subnet Mask
255.255.255.224
Usable Hosts
30
First Usable IP
255.19.43.1
Last Usable IP
255.19.43.30
Total IPs
32
Prefix Length
/27

Network address — the base address of the block (255.19.43.0). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 255.19.43.31 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 255.19.43.0/27
Network Address 255.19.43.0
Broadcast Address 255.19.43.31
Subnet Mask 255.255.255.224
Wildcard Mask 0.0.0.31
Prefix Length /27
IP Address Class Class E (Reserved)
Total IP Addresses 32
Usable Host Addresses 30
First Usable IP 255.19.43.1
Last Usable IP 255.19.43.30
Network (Hex) 0xFF132B00
Broadcast (Hex) 0xFF132B1F
Address Type Public / Globally Routable

Binary Representation

Network Address
11111111.00010011.00101011 11111111.00010011.00101011.00000000
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 255.19.43.0/27 into 2 equal /28 subnets (14 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 255.19.43.0/28 255.19.43.0 255.19.43.1 255.19.43.14 255.19.43.15 14
2 255.19.43.16/28 255.19.43.16 255.19.43.17 255.19.43.30 255.19.43.31 14

IP Address Sample

Showing first 16 of 32 total IPs.

255.19.43.0 net
255.19.43.1
255.19.43.2
255.19.43.3
255.19.43.4
255.19.43.5
255.19.43.6
255.19.43.7
255.19.43.8
255.19.43.9
255.19.43.10
255.19.43.11
255.19.43.12
255.19.43.13
255.19.43.14
255.19.43.15
… 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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