Also check Newfoundland, Canada which has a code of NL, like Netherlands. If the GEDCOM file says NL it is listed there.
NOTE: Adding entries to this province has been hindered by the practice of clods using the city name without the province, such as Utrecht, Netherlands instead of Utrecht, Utrecht, Netherlands. The two-word label could mean the province, without a city, so the entry is skipped.
To add your data: Simply send the URL of your GEDCOM file to webmaster at Gedcomindex.com. No websites? Look to Dropbox.com