IPRangeExplorer

126.242.0.0/15

Public

Class A — /15 prefix — 131,070 usable hosts

Network Address
126.242.0.0
Broadcast Address
126.243.255.255
Subnet Mask
255.254.0.0
Usable Hosts
131,070
First Usable IP
126.242.0.1
Last Usable IP
126.243.255.254
Total IPs
131,072
Prefix Length
/15

Network address — the base address of the block (126.242.0.0). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 126.243.255.255 are delivered to every device in the subnet. Also reserved — not assignable.

Usable hosts — the 131,070 addresses between those two that you can assign to servers, VMs, or interfaces.

Subnet mask — 255.254.0.0 is the dotted-decimal equivalent of /15. Older tools and Cisco configs use this format instead of CIDR slash notation.

Full Details

CIDR Notation 126.242.0.0/15
Network Address 126.242.0.0
Broadcast Address 126.243.255.255
Subnet Mask 255.254.0.0
Wildcard Mask 0.1.255.255
Prefix Length /15
IP Address Class Class A
Total IP Addresses 131,072
Usable Host Addresses 131,070
First Usable IP 126.242.0.1
Last Usable IP 126.243.255.254
Network (Hex) 0x7EF20000
Broadcast (Hex) 0x7EF3FFFF
Address Type Public / Globally Routable

Binary Representation

Network Address
01111110 01111110.11110010.00000000.00000000
Subnet Mask
11111111.11111110.00000000.00000000

The first 15 bits (1s in the mask) identify the network. The remaining 17 bits identify hosts within the network.

Split into Equal Subnets

Split 126.242.0.0/15 into 2 equal /16 subnets (65,534 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 126.242.0.0/16 126.242.0.0 126.242.0.1 126.242.255.254 126.242.255.255 65,534
2 126.243.0.0/16 126.243.0.0 126.243.0.1 126.243.255.254 126.243.255.255 65,534

/15 Subnet Reference

Total IPs 131,072
Usable Hosts 131,070
Subnet Mask 255.254.0.0
Wildcard 0.1.255.255
Full /15 reference →

Related Ranges

Parent /14 block 126.240.0.0/14 Sibling /15 block 126.240.0.0/15

Adjacent Prefix Sizes

/13 524,286 hosts /14 262,142 hosts /15 131,070 hosts /16 65,534 hosts /17 32,766 hosts

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