169.53.17.0/25

Public

Class B — /25 prefix — 126 usable hosts

Network Address
169.53.17.0
Broadcast Address
169.53.17.127
Subnet Mask
255.255.255.128
Usable Hosts
126
First Usable IP
169.53.17.1
Last Usable IP
169.53.17.126
Total IPs
128
Prefix Length
/25

Network address — the base address of the block (169.53.17.0). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 169.53.17.127 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 169.53.17.0/25
Network Address 169.53.17.0
Broadcast Address 169.53.17.127
Subnet Mask 255.255.255.128
Wildcard Mask 0.0.0.127
Prefix Length /25
IP Address Class Class B
Total IP Addresses 128
Usable Host Addresses 126
First Usable IP 169.53.17.1
Last Usable IP 169.53.17.126
Network (Hex) 0xA9351100
Broadcast (Hex) 0xA935117F
Address Type Public / Globally Routable

Binary Representation

Network Address
10101001.00110101.00010001 10101001.00110101.00010001.00000000
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 169.53.17.0/25 into 2 equal /26 subnets (62 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 169.53.17.0/26 169.53.17.0 169.53.17.1 169.53.17.62 169.53.17.63 62
2 169.53.17.64/26 169.53.17.64 169.53.17.65 169.53.17.126 169.53.17.127 62

IP Address Sample

Showing first 16 of 128 total IPs.

169.53.17.0 net
169.53.17.1
169.53.17.2
169.53.17.3
169.53.17.4
169.53.17.5
169.53.17.6
169.53.17.7
169.53.17.8
169.53.17.9
169.53.17.10
169.53.17.11
169.53.17.12
169.53.17.13
169.53.17.14
169.53.17.15
… 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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