40.83.102.0/25

Public

Class A — /25 prefix — 126 usable hosts

Network Address
40.83.102.0
Broadcast Address
40.83.102.127
Subnet Mask
255.255.255.128
Usable Hosts
126
First Usable IP
40.83.102.1
Last Usable IP
40.83.102.126
Total IPs
128
Prefix Length
/25

Network address — the base address of the block (40.83.102.0). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 40.83.102.127 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 40.83.102.0/25
Network Address 40.83.102.0
Broadcast Address 40.83.102.127
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 40.83.102.1
Last Usable IP 40.83.102.126
Network (Hex) 0x28536600
Broadcast (Hex) 0x2853667F
Address Type Public / Globally Routable

Binary Representation

Network Address
00101000.01010011.01100110 00101000.01010011.01100110.00000000
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 40.83.102.0/25 into 2 equal /26 subnets (62 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 40.83.102.0/26 40.83.102.0 40.83.102.1 40.83.102.62 40.83.102.63 62
2 40.83.102.64/26 40.83.102.64 40.83.102.65 40.83.102.126 40.83.102.127 62

IP Address Sample

Showing first 16 of 128 total IPs.

40.83.102.0 net
40.83.102.1
40.83.102.2
40.83.102.3
40.83.102.4
40.83.102.5
40.83.102.6
40.83.102.7
40.83.102.8
40.83.102.9
40.83.102.10
40.83.102.11
40.83.102.12
40.83.102.13
40.83.102.14
40.83.102.15
… 112 more IPs …

/25 Subnet Reference

Total IPs 128
Usable Hosts 126
Subnet Mask 255.255.255.128
Wildcard 0.0.0.127

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