IPRangeExplorer

15.128.63.32/27

Public

Class A — /27 prefix — 30 usable hosts

Network Address
15.128.63.32
Broadcast Address
15.128.63.63
Subnet Mask
255.255.255.224
Usable Hosts
30
First Usable IP
15.128.63.33
Last Usable IP
15.128.63.62
Total IPs
32
Prefix Length
/27

Network address — the base address of the block (15.128.63.32). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 15.128.63.63 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 mask — 255.255.255.224 is the dotted-decimal equivalent of /27. Older tools and Cisco configs use this format instead of CIDR slash notation.

Full Details

CIDR Notation 15.128.63.32/27
Network Address 15.128.63.32
Broadcast Address 15.128.63.63
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 15.128.63.33
Last Usable IP 15.128.63.62
Network (Hex) 0x0F803F20
Broadcast (Hex) 0x0F803F3F
Address Type Public / Globally Routable

Binary Representation

Network Address
00001111.10000000.00111111 00001111.10000000.00111111.00100000
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 15.128.63.32/27 into 2 equal /28 subnets (14 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 15.128.63.32/28 15.128.63.32 15.128.63.33 15.128.63.46 15.128.63.47 14
2 15.128.63.48/28 15.128.63.48 15.128.63.49 15.128.63.62 15.128.63.63 14

IP Address Sample

Showing first 16 of 32 total IPs.

15.128.63.32 net
15.128.63.33
15.128.63.34
15.128.63.35
15.128.63.36
15.128.63.37
15.128.63.38
15.128.63.39
15.128.63.40
15.128.63.41
15.128.63.42
15.128.63.43
15.128.63.44
15.128.63.45
15.128.63.46
15.128.63.47
… 16 more IPs …

/27 Subnet Reference

Total IPs 32
Usable Hosts 30
Subnet Mask 255.255.255.224
Wildcard 0.0.0.31
Full /27 reference →

Related Ranges

Parent /26 block 15.128.63.0/26 Sibling /27 block 15.128.63.0/27

Adjacent Prefix Sizes

/25 126 hosts /26 62 hosts /27 30 hosts /28 14 hosts /29 6 hosts

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