MMDB Viewer

This tool enables offline access to IP geolocation and network metadata stored in MMDB databases. It accepts an MMDB file and performs IP lookups to return structured data such as country, city, coordinates, and ASN information. Target users include developers, network engineers, data scientists, and security analysts who require deterministic, local access without external API calls. Typical use cases include log validation, dataset enrichment in CI pipelines, and offline testing for routing decisions. The tool assumes MMDB format compatibility and operates in non-networked environments to preserve data sovereignty. It supports single IP queries and batched inputs for performance in automation pipelines.
Conceptually, the viewer decodes the binary MMDB format, traverses data blocks, and uses the IP as a key to retrieve the first matching data record. It handles IPv4 and IPv6, returns fields such as country, region, city, latitude, longitude, postal code, ASN, and organization, and yields a not-found result when there is no match. Determinism is guaranteed given the same MMDB version. The product emphasizes offline capability, reproducibility, and a stable output schema suitable for downstream processing.
Who benefits includes DevOps, security teams, data scientists, and engineers who rely on precise IP-to-location data for logging, validation, threat detection, or routing tests. A key differentiator is offline operation with no external calls, plus compatibility with standard MaxMind MMDB schemas and simple integration into automation. Common use cases are log enrichment, data validation, inventory auditing, and migration testing of geolocation-based rules.