29.27.129.0/25

Public

Class A — /25 prefix — 126 usable hosts

Network Address
29.27.129.0
Broadcast Address
29.27.129.127
Subnet Mask
255.255.255.128
Usable Hosts
126
First Usable IP
29.27.129.1
Last Usable IP
29.27.129.126
Total IPs
128
Prefix Length
/25

Network address — the base address of the block (29.27.129.0). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 29.27.129.127 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 29.27.129.0/25
Network Address 29.27.129.0
Broadcast Address 29.27.129.127
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 29.27.129.1
Last Usable IP 29.27.129.126
Network (Hex) 0x1D1B8100
Broadcast (Hex) 0x1D1B817F
Address Type Public / Globally Routable

Binary Representation

Network Address
00011101.00011011.10000001 00011101.00011011.10000001.00000000
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 29.27.129.0/25 into 2 equal /26 subnets (62 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 29.27.129.0/26 29.27.129.0 29.27.129.1 29.27.129.62 29.27.129.63 62
2 29.27.129.64/26 29.27.129.64 29.27.129.65 29.27.129.126 29.27.129.127 62

IP Address Sample

Showing first 16 of 128 total IPs.

29.27.129.0 net
29.27.129.1
29.27.129.2
29.27.129.3
29.27.129.4
29.27.129.5
29.27.129.6
29.27.129.7
29.27.129.8
29.27.129.9
29.27.129.10
29.27.129.11
29.27.129.12
29.27.129.13
29.27.129.14
29.27.129.15
… 112 more IPs …

/25 Subnet Reference

Total IPs 128
Usable Hosts 126
Subnet Mask 255.255.255.128
Wildcard 0.0.0.127

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