MMDB file format

What MMDB is

MMDB is the MaxMind DB file format. It is designed for fast local lookup of an IP address into an associated data record.

Why it is useful

MMDB is useful when an application, service, or local process needs to answer a lookup question quickly: given this IP address, which geolocation or network record applies?

How GeoIP Locations uses it

GeoIP Locations publishes MMDB packages as a compact lookup database companion to CSV and Parquet. The MMDB format is not intended to replace analytical tables; it is intended for application lookup workflows.

When to choose MMDB

Choose MMDB when you need offline IP lookup, application integration, local enrichment, or a MaxMind-compatible database workflow.