210.252.133.128/25

Public

Class C — /25 prefix — 126 usable hosts

Network Address
210.252.133.128
Broadcast Address
210.252.133.255
Subnet Mask
255.255.255.128
Usable Hosts
126
First Usable IP
210.252.133.129
Last Usable IP
210.252.133.254
Total IPs
128
Prefix Length
/25

Network address — the base address of the block (210.252.133.128). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 210.252.133.255 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 210.252.133.128/25
Network Address 210.252.133.128
Broadcast Address 210.252.133.255
Subnet Mask 255.255.255.128
Wildcard Mask 0.0.0.127
Prefix Length /25
IP Address Class Class C
Total IP Addresses 128
Usable Host Addresses 126
First Usable IP 210.252.133.129
Last Usable IP 210.252.133.254
Network (Hex) 0xD2FC8580
Broadcast (Hex) 0xD2FC85FF
Address Type Public / Globally Routable

Binary Representation

Network Address
11010010.11111100.10000101 11010010.11111100.10000101.10000000
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 210.252.133.128/25 into 2 equal /26 subnets (62 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 210.252.133.128/26 210.252.133.128 210.252.133.129 210.252.133.190 210.252.133.191 62
2 210.252.133.192/26 210.252.133.192 210.252.133.193 210.252.133.254 210.252.133.255 62

IP Address Sample

Showing first 16 of 128 total IPs.

210.252.133.128 net
210.252.133.129
210.252.133.130
210.252.133.131
210.252.133.132
210.252.133.133
210.252.133.134
210.252.133.135
210.252.133.136
210.252.133.137
210.252.133.138
210.252.133.139
210.252.133.140
210.252.133.141
210.252.133.142
210.252.133.143
… 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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