How to Find a Device’s IP Address Using MAC Address Online

find device name by mac address online
find device name by mac address online

In today’s interconnected world, every device that connects to a network is assigned a unique identifier known as an IP address. These addresses play a critical role in enabling communication between devices across the network. However, there are situations where you may need to locate a device’s IP address using its MAC address. This article will guide you through the process of finding a device’s IP address using its MAC address, and we’ll explore various tools available for this purpose.

Understanding MAC Addresses

A MAC address, short for Media Access Control address, is a hardware identifier assigned to a device’s Network Interface Card (NIC). It consists of 48 bits and is represented as a 12-digit hexadecimal number or a six-byte binary number separated by colons. For example: 2C:54:91:88:C9:E3. The first six digits of a MAC address indicate the manufacturer, while the last six digits represent the Network Interface Controller assigned by the manufacturer. Devices can have multiple MAC addresses, with each network interface possessing a unique MAC address.

The Role of Address Resolution Protocol (ARP)

Address Resolution Protocol (ARP) is a communication protocol that facilitates the association between an IP address and a MAC address. When a device wants to send a packet to another device, it broadcasts an ARP packet containing a question like “What is the MAC address corresponding to IP address 10.5.5.1?” The device with the corresponding IP address responds with its MAC address, enabling successful communication.

Using ARP to Find a Device’s IP Address from MAC Address

To find a device’s IP address using its MAC address, you can utilize the ARP protocol. Below are the steps to do this on both Windows and macOS:

On Windows

  1. Open the Command Prompt (CMD) by searching for “cmd” in the search menu.
  2. Type “arp -a” in the Command Prompt and press Enter.
  3. A list of IP addresses, their corresponding MAC addresses, and allocation types (dynamic or static) will be displayed.

On macOS

  1. Open the Terminal app from Applications > Utilities > Terminal.
  2. Type “arp -a” in the Terminal and press Enter.
  3. A list of ARP entries will be shown, including the IP address, MAC address, interface, and allocation type.

Using InvGate Insight to Locate Devices

InvGate Insight is an agent-first tool that provides an alternative method to locate devices using MAC addresses. By installing the Agent on your equipment, you can search for devices based on their MAC addresses and get their complete profile and geolocation data.

Finding the DHCP IP Address

The Dynamic Host Configuration Protocol (DHCP) is a network protocol that assigns IP addresses to devices. To find the IP address of the DHCP server on both Windows and macOS, follow these steps:

On Windows

  1. Open the Command Prompt (CMD) and type “ipconfig” to view your network configuration data, including the DHCP server’s IP address.

On macOS

  1. Open Finder > Applications > Utilities > Terminal.
  2. Type “ifconfig” or “ifconfig -a” in the Terminal and press Enter.
  3. Copy your IP address from the network configuration and access it via a web browser to reach the ISP web page.

Using a Sniffer to Find the Information

If the previous methods are unsuccessful, you can resort to using a sniffer tool like Nmap to monitor your network traffic and find the MAC addresses.

Third-Party Apps for IP Address Discovery Using MAC Address

Various third-party apps are available that can help you find the IP address associated with a MAC address. Some popular examples include Angry IP Scanner, Advanced IP Scanner, and PRTG Network Monitor.

Frequently Asked Questions

What is a MAC address?

A MAC address, short for Media Access Control address, is a hardware identifier assigned to a device’s Network Interface Card (NIC). It consists of 48 bits and is represented as a 12-digit hexadecimal number or a six-byte binary number separated by colons. For example: 2C:54:91:88:C9:E3. The first six digits of a MAC address indicate the manufacturer, while the last six digits represent the Network Interface Controller assigned by the manufacturer. Devices can have multiple MAC addresses, with each network interface possessing a unique MAC address.

What is the Address Resolution Protocol (ARP) and how does it work?

Address Resolution Protocol (ARP) is a communication protocol that facilitates the association between an IP address and a MAC address. When a device wants to send a packet to another device, it broadcasts an ARP packet containing a question like ‘What is the MAC address corresponding to IP address 10.5.5.1?’ The device with the corresponding IP address responds with its MAC address, enabling successful communication.

How can I find a device’s IP address using its MAC address on Windows?

To find a device’s IP address using its MAC address on Windows, you can open the Command Prompt (CMD) and type ‘arp -a’ to view a list of IP addresses, their corresponding MAC addresses, and allocation types (dynamic or static).

How can I find a device’s IP address using its MAC address on macOS?

To find a device’s IP address using its MAC address on macOS, you can open the Terminal app and type ‘arp -a’ to view a list of ARP entries, including the IP address, MAC address, interface, and allocation type.

What is InvGate Insight, and how does it help in locating devices using MAC addresses?

InvGate Insight is an agent-first tool that provides an alternative method to locate devices using MAC addresses. By installing the Agent on your equipment, you can search for devices based on their MAC addresses and get their complete profile and geolocation data.

Are there third-party apps available to discover IP addresses using MAC addresses?

Yes, various third-party apps are available that can help you find the IP address associated with a MAC address. Some popular examples include Angry IP Scanner, Advanced IP Scanner, and PRTG Network Monitor.

Conclusion

Knowing how to find a device’s IP address using its MAC address can be invaluable in various situations. Whether you use the ARP protocol, specialized tools like InvGate Insight, or third-party apps, you can efficiently locate devices on your network and manage them effectively. Finding the device name by MAC address online is an essential skill for network administrators and individuals troubleshooting connectivity issues. By understanding the relationship between MAC addresses and IP addresses, you can gain valuable insights into your network and ensure smooth communication among devices. With the various tools and methods discussed in this article, you are now equipped to efficiently locate devices and maintain the integrity of your network.