136.18.23.0/27

Public

Class B — /27 prefix — 30 usable hosts

Network Address
136.18.23.0
Broadcast Address
136.18.23.31
Subnet Mask
255.255.255.224
Usable Hosts
30
First Usable IP
136.18.23.1
Last Usable IP
136.18.23.30
Total IPs
32
Prefix Length
/27

Network address — the base address of the block (136.18.23.0). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 136.18.23.31 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 136.18.23.0/27
Network Address 136.18.23.0
Broadcast Address 136.18.23.31
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 136.18.23.1
Last Usable IP 136.18.23.30
Network (Hex) 0x88121700
Broadcast (Hex) 0x8812171F
Address Type Public / Globally Routable

Binary Representation

Network Address
10001000.00010010.00010111 10001000.00010010.00010111.00000000
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 136.18.23.0/27 into 2 equal /28 subnets (14 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 136.18.23.0/28 136.18.23.0 136.18.23.1 136.18.23.14 136.18.23.15 14
2 136.18.23.16/28 136.18.23.16 136.18.23.17 136.18.23.30 136.18.23.31 14

IP Address Sample

Showing first 16 of 32 total IPs.

136.18.23.0 net
136.18.23.1
136.18.23.2
136.18.23.3
136.18.23.4
136.18.23.5
136.18.23.6
136.18.23.7
136.18.23.8
136.18.23.9
136.18.23.10
136.18.23.11
136.18.23.12
136.18.23.13
136.18.23.14
136.18.23.15
… 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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