These sources provide cross-country or foundational data used across multiple regions.
| Source | URL | Data Provided |
|---|---|---|
| ISO 3166 | iso.org | Country codes, subdivision codes (ISO 3166-1 and 3166-2) |
| OpenStreetMap / Nominatim | nominatim.openstreetmap.org | Geocoding and reverse geocoding for address lookups |
| CCADB (Common CA Database) | ccadb.org | Certificate authority intermediate certificates for domain validation |
| SAM.gov (System for Award Management) | sam.gov | UEI (Unique Entity Identifier) numbers for registered government entities |
| NCES IPEDS | nces.ed.gov | Higher education institutions, state university systems, .edu domains |
| CSCD | californiaschoolcampusdatabase.org | 9,533 California school campus boundaries mapped at the assessor parcel level. Maintained by GreenInfo Network and Stanford Prevention Research Center. Used for service map school layer. |
| Wikidata SPARQL New | query.wikidata.org | Data Verification: Entity name matching, Wikidata Q-IDs, official website URLs, and metadata enrichment across 30+ countries (~38,000 entities linked) |