On Windows networks, computers can be identified in more than one way. Two common names you may see are the NetBIOS name and the hostname. They often look similar, but they are not the same thing. Understanding the difference is useful when you are setting up networking, troubleshooting file sharing, checking DNS, or managing Windows systems on a LAN.

What Is a NetBIOS Name?

A NetBIOS name is a name used by Windows computers to identify each other on a local network. NetBIOS stands for Network Basic Input/Output System. It is an older networking technology that allows applications on different computers to communicate over a Local Area Network (LAN).

Key points about NetBIOS names:

  • Every Windows computer can have a NetBIOS name
  • It is mainly used for local network communication
  • It helps services related to Windows file and printer sharing
  • It is often visible in system and network settings

In older Windows networks, tools and features such as Network Neighborhood relied on NetBIOS to discover nearby computers.

What Is a Hostname?

A hostname is the network name of a computer used for IP-based communication. When a computer connects over TCP/IP, the hostname is used with DNS to find the correct IP address. Applications such as web browsers, FTP clients, and many internet services depend on hostnames.

For example:

  • A hostname might be resolved by DNS into an IP address
  • Your browser then connects to that IP address to open a website

So, the hostname is part of how systems communicate over modern IP networks.

NetBIOS Name vs Hostname

Although the NetBIOS name and hostname may appear the same, Windows treats them as separate identifiers.

Feature NetBIOS Name Hostname
Main use Local Windows networking IP networking and DNS
Network scope Usually LAN / local network Local network and internet
Resolution method NetBIOS name resolution DNS or hosts file
Used by File sharing, older Windows network services Browsers, FTP, most internet applications
Change behavior Changing hostname does not always change NetBIOS name automatically in all setups Used for DNS and IP-based access


Important Difference to Remember

A change in the hostname does not always automatically change the NetBIOS name.

That means a computer could have:

  • One hostname used for DNS and IP networking
  • A different NetBIOS name used for local Windows network discovery

This can cause confusion when troubleshooting network access, shared folders, or computer visibility on a LAN.

How NetBIOS Names Are Used

NetBIOS-related functionality is commonly involved when:

  • Windows computers share files over a local network
  • Mapped network drives are used
  • Older LAN discovery features look for nearby systems
  • Local network applications depend on computer names instead of IP addresses

For example, commands and features related to network shares historically depended on NetBIOS name resolution.

How Hostnames Are Used

Hostnames are used when a system needs to work with IP networking.

Typical examples include:

  • Opening websites in a browser
  • Connecting through FTP
  • Resolving names through DNS
  • Accessing servers by domain or computer name over TCP/IP

For IP communication to work, the hostname must resolve to an IP address, usually through DNS.

Why This Matters

If network resources are not opening correctly, the problem may be related to name resolution.

Possible situations include:

  • The hostname resolves through DNS, but the NetBIOS name is different
  • A shared folder works by IP address but not by computer name
  • A Windows PC is visible on the LAN under an unexpected name
  • DNS changes were made, but local NetBIOS identification stayed the same

Checking both names can help identify the issue faster.

Final Thoughts

A NetBIOS name is mainly used for local Windows networking, while a hostname is used for IP-based communication and DNS resolution. They may look similar, but they serve different purposes and are not always updated together.

If you work with Windows systems on a LAN, understanding this difference can make network setup and troubleshooting much easier.

For more networking and hosting-related guides, explore the bodHOST knowledge base. You can also review our latest web hosting plans if you are setting up websites or online services.

Related Knowledge base: Public vs. Private IP Address: What’s the Difference

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