64.252.129.0/25

Public

Class A — /25 prefix — 126 usable hosts

Network Address
64.252.129.0
Broadcast Address
64.252.129.127
Subnet Mask
255.255.255.128
Usable Hosts
126
First Usable IP
64.252.129.1
Last Usable IP
64.252.129.126
Total IPs
128
Prefix Length
/25

Network address — the base address of the block (64.252.129.0). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 64.252.129.127 are delivered to every device in the subnet. Also reserved — not assignable.

Usable hosts — the 126 addresses between those two that you can assign to servers, VMs, or interfaces.

Subnet mask255.255.255.128 is the dotted-decimal equivalent of /25. Older tools and Cisco configs use this format instead of CIDR slash notation.

Full Details

CIDR Notation 64.252.129.0/25
Network Address 64.252.129.0
Broadcast Address 64.252.129.127
Subnet Mask 255.255.255.128
Wildcard Mask 0.0.0.127
Prefix Length /25
IP Address Class Class A
Total IP Addresses 128
Usable Host Addresses 126
First Usable IP 64.252.129.1
Last Usable IP 64.252.129.126
Network (Hex) 0x40FC8100
Broadcast (Hex) 0x40FC817F
Address Type Public / Globally Routable

Binary Representation

Network Address
01000000.11111100.10000001 01000000.11111100.10000001.00000000
Subnet Mask
11111111.11111111.11111111.10000000

The first 25 bits (1s in the mask) identify the network. The remaining 7 bits identify hosts within the network.

Split into Equal Subnets

Split 64.252.129.0/25 into 2 equal /26 subnets (62 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 64.252.129.0/26 64.252.129.0 64.252.129.1 64.252.129.62 64.252.129.63 62
2 64.252.129.64/26 64.252.129.64 64.252.129.65 64.252.129.126 64.252.129.127 62

IP Address Sample

Showing first 16 of 128 total IPs.

64.252.129.0 net
64.252.129.1
64.252.129.2
64.252.129.3
64.252.129.4
64.252.129.5
64.252.129.6
64.252.129.7
64.252.129.8
64.252.129.9
64.252.129.10
64.252.129.11
64.252.129.12
64.252.129.13
64.252.129.14
64.252.129.15
… 112 more IPs …

/25 Subnet Reference

Total IPs 128
Usable Hosts 126
Subnet Mask 255.255.255.128
Wildcard 0.0.0.127

Calculate Another