Fossa Technology

IP Class Identifier

Instantly classify IPv4 addresses into Class A, B, or C with detailed network analysis

Enter an IPv4 address above to see its classification and network details

🌐 IP Address Classes

Class A: 1.0.0.0 to 126.255.255.255
First octet: 1-126 | Default subnet: /8 | Hosts: 16,777,214
Class B: 128.0.0.0 to 191.255.255.255
First octet: 128-191 | Default subnet: /16 | Hosts: 65,534
Class C: 192.0.0.0 to 223.255.255.255
First octet: 192-223 | Default subnet: /24 | Hosts: 254

📊 Quick Examples

Class A
Class B
Class C
Class A

🔧 Features

  • ✅ Instant IP classification
  • 📱 Mobile-friendly interface
  • 🔍 Detailed network information
  • ⚡ Real-time validation
  • 🆓 Completely free to use

Frequently Asked Questions

What is an IP Class Identifier?

An IP Class Identifier is a tool that classifies IPv4 addresses into Class A, B, or C based on their first octet, helping you understand network size and structure.

How do I use the IP Class Identifier tool?

Simply enter any IPv4 address (e.g., 192.168.1.1) and the tool will instantly show its class, subnet mask, and network details.

What are the different classes of IPv4 addresses?

IPv4 addresses are divided into Class A (large networks), Class B (medium networks), and Class C (small networks), based on the value of the first octet.

What other network tools can I use?

You can also try our CIDR to IP Range Converter, Subnet Calculator, and IP Address Validator for more advanced network analysis.

Is the IP Class Identifier free to use?

Yes, the IP Class Identifier and all related network tools on Fossatech are completely free to use.

IPv4 Class Ranges

ABCDE
1.0.0.0126.255.255.255128.0.0.0191.255.255.255192.0.0.0223.255.255.255224.0.0.0239.255.255.255240.0.0.0255.255.255.255
Class A1.0.0.0 - 126.255.255.255
Class B128.0.0.0 - 191.255.255.255
Class C192.0.0.0 - 223.255.255.255
Class D224.0.0.0 - 239.255.255.255
Class E240.0.0.0 - 255.255.255.255

More About IP Classes

What is a private IP address?

A private IP address is reserved for use within a private network and is not routable on the public internet. Examples include 10.0.0.0/8, 172.16.0.0/12, and 192.168.0.0/16.

Why do IP classes matter?

IP classes help define the size and structure of networks, which is important for routing, subnetting, and network management.

Related Tools

CIDR to IP Range ConverterSubnet CalculatorIP Address Validator