IP Addresses Explained (IPv4 vs. IPv6) - Free HTML Lessons | Full Stack Web Development | Nextsem

1. What is an IP Address?

1. Every internet device needs an address.

2. IP stands for Internet Protocol address.

3. It works like postal home address.

4. Packets travel using unique IP addresses.

5. Routers direct data to correct destinations.

Example

Try it Yourself »

<!DOCTYPE html>

<head>

<title>IP Address Demo</title>

</head>

<body>

<h1>Internet Protocol Addresses</h1>

<p>Local IP: 192.168.29.171</p>

</body>

</html>

2. IPv4: 32-Bit Dotted Decimal

1. IPv4 uses four dotted decimal numbers.

2. Format looks like 192.168.1.1 on networks.

3. System allows 4.3 billion unique addresses.

4. Rapid internet growth depleted IPv4 pool.

5. Networks use NAT for address sharing.

3. IPv6: 128-Bit Hexadecimal

1. IPv6 replaces exhausted older IPv4 pools.

2. Format uses hexadecimal blocks with colons.

3. Provides trillions of new unique addresses.

4. Modern routers support dual stack protocols.

5. Every smart device gets unique address.

4. Inspecting Network Configuration with ipconfig

1. Windows ipconfig reveals active network settings.

2. Open Windows Terminal on your computer.

3. Type ipconfig and press Enter key.

4. Output reveals local IPv4 and IPv6.

5. Default gateway identifies local Wi-Fi router.

⊞Administrator: Windows 11 Command Prompt (cmd.exe)

>ipconfig

⊞Windows 11 Execution OutputReal PC Match

Microsoft Windows [Version 10.0.22631.3007] (Windows 11 Pro x86_64)

Windows IP Configuration Ethernet adapter Ethernet: IPv4 Address. . . . . . . . . . . : 192.168.29.170 Subnet Mask . . . . . . . . . . . : 255.255.255.0 Default Gateway . . . . . . . . . : 192.168.29.1