ArcGIS API Query - download multiple pages of contour data.

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ArcGIS API Query - download multiple pages of contour data.
Im making an API call below and but it only returns a maximum of 1000 results and then i get a notification that I have exceeded Transfer Limit Im wondering if someone can help me figure out how to 1) find out how many results there are and 2) download the next 1000 results
****to view URL]/arcgis/rest/services/contours/MapServer/16/query?where=&text=&objectIds=&time=&geometry=-93.712606,41.34144,-93.709216,41.353792&geometryType=esriGeometryEnvelope&inSR=4326&spatialRel=esriSpatialRelIntersects&relationParam=&outFields=*&returnGeometry=true&returnTrueCurves=false&maxAllowableOffset=&geometryPrecision=&outSR=3857&having=&returnIdsOnly=false&returnCountOnly=false&orderByFields=&groupByFieldsForStatistics=&outStatistics=&returnZ=false&returnM=false&gdbVersion=&historicMoment=&returnDistinctValues=false&resultOffset=&resultRecordCount=&queryByDistance=&returnExtentOnly=false&datumTransformation=¶meterValues=&rangeValues=&quantizationParameters=&featureEncoding=esriDefault&f=pjson&maxResults=1000&sig=b77635f4a530bbbe5b568c2f12c122aba2e02c0ee94263be9f8d66319eff02d6
Skills:
Geospatial
, RESTful API
, Web API
, Geographical Information System (GIS)
, RESTful

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