102.159.1.0/27

Public

Class A — /27 prefix — 30 usable hosts

Network Address
102.159.1.0
Broadcast Address
102.159.1.31
Subnet Mask
255.255.255.224
Usable Hosts
30
First Usable IP
102.159.1.1
Last Usable IP
102.159.1.30
Total IPs
32
Prefix Length
/27

Network address — the base address of the block (102.159.1.0). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 102.159.1.31 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 102.159.1.0/27
Network Address 102.159.1.0
Broadcast Address 102.159.1.31
Subnet Mask 255.255.255.224
Wildcard Mask 0.0.0.31
Prefix Length /27
IP Address Class Class A
Total IP Addresses 32
Usable Host Addresses 30
First Usable IP 102.159.1.1
Last Usable IP 102.159.1.30
Network (Hex) 0x669F0100
Broadcast (Hex) 0x669F011F
Address Type Public / Globally Routable

Binary Representation

Network Address
01100110.10011111.00000001 01100110.10011111.00000001.00000000
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 102.159.1.0/27 into 2 equal /28 subnets (14 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 102.159.1.0/28 102.159.1.0 102.159.1.1 102.159.1.14 102.159.1.15 14
2 102.159.1.16/28 102.159.1.16 102.159.1.17 102.159.1.30 102.159.1.31 14

IP Address Sample

Showing first 16 of 32 total IPs.

102.159.1.0 net
102.159.1.1
102.159.1.2
102.159.1.3
102.159.1.4
102.159.1.5
102.159.1.6
102.159.1.7
102.159.1.8
102.159.1.9
102.159.1.10
102.159.1.11
102.159.1.12
102.159.1.13
102.159.1.14
102.159.1.15
… 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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