What is my IP address?

What is an IP address?

An IP address (Internet Protocol address) is a unique identifier assigned to each device connected to a network. It enables devices to communicate with one another over the internet or local networks, ensuring data reaches its correct destination. Think of it as your device’s address on the network.

Types of IP Address

Internet Protocol Version 4 (IPv4)

IPv4 is the most widely used protocol that provides a 32-bit address format. Despite its limitations (only 4.3 billion unique addresses), it remains the backbone of the internet.

Key Features:

• 32-bit address format (e.g., 192.168.1.1)
• Supports unicast, multicast, and broadcast communication
• Still used for core protocols like HTTP and DNS

Internet Protocol Version 6 (IPv6)

IPv6 is the successor to IPv4 and offers a much larger address space (128-bit addresses). It is designed to meet the growing number of internet-connected devices and improve network efficiency.

Key Improvements: 

• Automatic Address Configuration: Devices can self-assign IP addresses.
• No NAT: Eliminates the need for address translation.
• Better QoS & Multicast Support: Improves video streaming and real-time communication.
• No Broadcasts: Reduces network congestion by using multicast and anycast.

Public vs Private IP Address

Public IP Address

A public IP is a unique address assigned to devices that access the internet, visible to all on the web. These addresses are managed by ISPs, and devices with public IPs need extra security measures like firewalls.

Private IP Address

Private IP addresses are used within local networks (like in homes or offices). These addresses cannot be seen from the outside world, allowing multiple devices in the same network to share a single public IP address.

Key Differences:

• Public IPs: Unique across the internet, accessible from anywhere.
• Private IPs: Used within local networks and assigned by your router.

In summary, your device’s IP address is essential for communication on the internet or within a network. Whether it’s IPv4 or IPv6, public or private, understanding IP addresses ensures better network management and security.