National Georegister

Base URL

https://www.nationaalgeoregister.nl/geonetwork/srv

Endpoints 7

• POST/api/search/records/_searchSearch with an Elasticsearch query (JSON): query, size, sort, search_after, _source, aggs. Fast (~1 ms 'took').
• GET/api/records/{uuid}One full ISO record; with Accept application/json as JSON (~30 kB), otherwise XML.
• GET/api/records/{uuid}/formatters/xmlThe record as ISO 19139 XML.
• GET/api/records/{uuid}/relatedLinked parts: online resources (links with protocol), services, datasets, feature catalogues, thumbnails; filter with type=…
• GET/dut/csw?service=CSW&request=GetRecordsOGC CSW 2.0.2 search, with CQL_TEXT or FILTER; resultType hits or results; elementSetName brief/summary/full.
• GET/dut/csw?service=CSW&request=GetRecordById&id={uuid}One record via CSW, in the chosen outputSchema (gmd, mdb, dcat, DCAT-AP-NL 3.0 …).
• GET/dut/catalog.search#/metadata/{uuid}The record page for people (not an API).

Filtering tested

Elasticsearch Query DSL (match, term, bool, range, aggs) in the search API; CQL_TEXT or OGC Filter in CSW.

Parameters 8

Fields in the search index (_source) 11

Limits and pitfalls

• No key and no documented limit. Page with search_after (size 1000); the whole catalogue is ~10 pages and ~15 s. experience
• The search API requires the headers Accept: application/json and a real language in Accept-Language (nl). Without Accept or with 'Accept-Language: *' (the Node fetch default) you get HTTP 400; GET /api/records/{uuid} even returns 500. curl does not have this problem. tested
• Our sample call below is therefore the CSW (GET, XML), which doesn't need these headers. For the JSON search API see the curl example under 'Searching via the API'. tested
• Format values are not clean: 'NetCDF' also appears wrapped in line breaks and spaces. Trim and collapse whitespace before counting. tested
• Dates in records are not always real: revision dates in the future (2028, 2098) or only year and month. Services on geodata.nationaalgeoregister.nl no longer exist (DNS). experience
• data.overheid.nl harvests the NGR (~7,750 records): the NGR uuid is in identifier there (…geonetwork?uuid=…). Use it to link duplicates. experience
• No robots.txt (404). /api/site, /api/sources and /api/doc returned 500; /v2/api-docs redirects to the sign-in page. tested

Try it HTTP 200 · 490 ms · 16 Oct

https://www.nationaalgeoregister.nl/geonetwork/srv/dut/csw?service=CSW&version=2.0.2&request=GetRecords&typeNames=csw:Record&resultType=results&elementSetName=brief&maxRecords=3&constraintLanguage=CQL_TEXT&constraint_language_version=1.1.0&constraint=AnyText LIKE '%natura%'

<?xml version="1.0" encoding="UTF-8"?>
<csw:GetRecordsResponse xmlns:csw="http://www.opengis.net/cat/csw/2.0.2" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.opengis.net/cat/csw/2.0.2 http://schemas.opengis.net/csw/2.0.2/CSW-discovery.xsd">
  <csw:SearchStatus timestamp="2026-10-16T21:58:34.962417Z" />
  <csw:SearchResults numberOfRecordsMatched="239" numberOfRecordsReturned="3" elementSet="brief" nextRecord="4">
    <csw:BriefRecord xmlns:ows="http://www.opengis.net/ows" xmlns:geonet="http://www.fao.org/geonetwork" xmlns:dc="http://purl.org/dc/elements/1.1/">
      <dc:identifier>6d91fa61-1fe7-544a-8191-8dbd44cb3267</dc:identifier>
      <dc:title>Habitattypen T1 Natura 2000 (versie januari 2025) (historie)</dc:title>
      <dc:type>GIS dataset</dc:type>
      <ows:BoundingBox crs="urn:ogc:def:crs:EPSG:6.6:4326">
        <ows:LowerCorner>52.4437 5.9726</ows:LowerCorner>
        <ows:UpperCorner>53.3684 7.4985</ows:UpperCorner>
      </ows:BoundingBox>
    </csw:BriefRecord>
    <csw:BriefRecord xmlns:ows="http://www.opengis.net/ows" xmlns:geonet="http://www.fao.org/geonetwork" xmlns:dc="http://purl.org/dc/elements/1.1/">
      <

Shortened response, saved at harvest time. Click the URL for the real, current response.