Data quality and coverage
See which fields are sourced and which are generated.
Current postal coverage
30 of 48 countries use sampled GeoNames locality/postal rows. Samples are bounded and not full national databases.
Countries with source rows
United States: 1224; Canada: 312; United Kingdom: 96; Japan: 1128; Australia: 192; Germany: 384; New Zealand: 371; Argentina: 552; Austria: 216; Switzerland: 612; Chile: 245; Cyprus: 144; Spain: 425; France: 312; India: 826; Italy: 480; South Korea: 408; Sri Lanka: 196; Morocco: 249; Malaysia: 384; Netherlands: 288; Norway: 360; Philippines: 408; Poland: 384; Portugal: 480; Russia: 1879; Sweden: 504; Thailand: 874; Turkey: 1968; Mexico: 768
Legacy samples
Singapore, United Arab Emirates, Brazil, Egypt, Greece, Indonesia, Iran, Myanmar, Mauritius, Nigeria, Nepal, Saudi Arabia, Ukraine, Vietnam, South Africa, China, Hong Kong, Taiwan. These fixtures have no verified upstream postal row. Do not treat their city/postcode association as independently checked.
Generated and enriched fields
Street and house details are synthetic. Names, jobs and companies come from Faker sample pools. Phones are test placeholders; most countries do not use valid dialable ranges. Japan Post adds unambiguous prefecture/city labels for a subset of Japanese postcodes. Sandbox cards are unrelated to generated profiles.
Audit and freshness
Source manifests retain URLs, download hashes, sample counts and source lines. Download/preparation timestamps are not provider update dates. OUI updates run through a review workflow; the website uses the last deployed snapshot, never a claim of live daily verification.