Using MMDB files

Origin and purpose

MMDB refers to the MaxMind DB lookup file format. It is designed to map an IP address to a data record quickly without requiring a remote API call.

Why GeoIP Locations publishes MMDB

MMDB is useful for applications that need local enrichment. Instead of scanning a table, an application asks the database: given this IP address, what record applies?

Best use cases

• Offline IP lookup inside an application.
• Local enrichment for logs, events, or security telemetry.
• Service-side lookup workflows where an API dependency is not desired.
• MaxMind-compatible tooling where MMDB readers are already used.

Important distinction

MMDB is not a replacement for Parquet analytics. Use MMDB for lookup. Use Parquet for analysis. Use CSV for simple exchange and inspection.