Postal-prefix test records - synthetic suffix
Netherlands Address Generator
Dutch-format addresses with a synthetic street and house number, a source locality and a four-digit postcode area. Two generated letters complete the test postcode without claiming a real delivery match.
Source-matched postal prefix. Street and remaining postcode characters are synthetic, not delivery-verified.
Netherlands Address Format
In the Dutch layout, the street name comes before the house number. The next line places four digits, a space and two uppercase letters before the locality. The formatter leaves two spaces between the complete test postcode and the locality name. House-number additions, building units and business recipients are not inferred from postcode data.
Voorbeeldstraat 250 7847 GG 'T HAANTJE NETHERLANDS
Synthetic format example, not a delivery address. The street or box line is generated test data.
UPU Netherlands addressing reference. This reference documents postal layouts, not the validity of generated addresses.
Netherlands Source Coverage
- Retained source rows
- 4,334
- Locality labels by area
- 2,460
- Covered source groups
- 12
The free GeoNames Netherlands file contains the numeric part of the postcode, not a complete address-level directory. The suffix letters are synthetic. The province names are source labels used for filtering; they do not establish a relationship between the invented street and the selected four-digit area.
Included province groups
- Drenthe: 279 source rows
- Flevoland: 97 source rows
- Friesland: 486 source rows
- Groningen: 264 source rows
- Guelders: 534 source rows
- Limburg: 289 source rows
- North Brabant: 564 source rows
- North Holland: 505 source rows
- Overijssel: 327 source rows
- South Holland: 579 source rows
- Utrecht: 247 source rows
- Zeeland: 163 source rows
Counts describe this imported subset, not a national completeness percentage. A locality label may occur in more than one source group. Exact duplicates are removed; unsupported or inconsistent records are omitted, not repaired with guessed geography.
Netherlands Form-Testing Cases
Dutch address forms often split street, house number and addition into separate inputs. These records provide a combined synthetic street line, so production parsers must not assume that every last token is an ordinary integer. For postcode fields, preserve the internal space and avoid treating the four-digit prefix as the complete postal code.
Generated records are for development, QA and demonstrations. They must not be used for mail delivery, identity checks, account verification or proof of residence. A synthetic result can coincidentally resemble an existing address; it is not guaranteed to be nonexistent.
Data and Attribution
Geographic data: GeoNames NL postal export, reused under CC BY 4.0. Downloaded 2026-09-05. The source provides no guarantee of accuracy, timeliness or completeness.
Postal-place relationships are retained from individual source rows, without mixing localities and codes independently. Coordinates, population figures and unrelated gazetteer fields are not included in the browser data.
Netherlands Address FAQ
Can the two postcode letters be used for a delivery lookup?
No. They are generated characters, not a licensed postcode-to-house-number relationship. A delivery lookup needs an authorized address source and the real house number.