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dynamic IP address

nounStandard termTelecom & IT

A dynamic IP address is a temporary network identifier assigned to a device by a server.

A dynamic IP address is a logical network address leased to a device for a limited time by a DHCP server, rather than being permanently configured. When the lease expires or the device reconnects, it may receive a completely different address from the available pool. Internet service providers use dynamic IPs for residential customers to conserve their limited allocation of public IPv4 addresses.

Heard on the job

You can't host a reliable web server on that residential connection because it uses a dynamic IP address that changes every week.

Do not mix it up with

  • static IP address: A dynamic IP changes automatically, while a static IP is manually assigned and never changes.

Related terms

static IP address

A fixed network address manually assigned to a device, rather than one leased dynamically.

Internet service provider

A company that supplies the physical infrastructure and routing necessary for customers to access the global internet.

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