diff --git a/youtube_dl/extractor/npo.py b/youtube_dl/extractor/npo.py
index ff2153387..cb8319f0d 100644
--- a/youtube_dl/extractor/npo.py
+++ b/youtube_dl/extractor/npo.py
@@ -36,8 +36,8 @@ class NPOIE(NPOBaseIE):
                         https?://
                             (?:www\.)?
                             (?:
-                                npo\.nl/(?!(?:live|radio)/)(?:[^/]+/){2}|
-                                ntr\.nl/(?:[^/]+/){2,}|
+                                npo\.nl/(?:[^/]+/)*|
+                                (?:ntr|npostart)\.nl/(?:[^/]+/){2,}|
                                 omroepwnl\.nl/video/fragment/[^/]+__|
                                 (?:zapp|npo3)\.nl/(?:[^/]+/){2,}
                             )
@@ -160,8 +160,20 @@ class NPOIE(NPOBaseIE):
     }, {
         'url': 'https://www.zapp.nl/1803-skelterlab/instructie-video-s/740-instructievideo-s/POMS_AT_11736927',
         'only_matching': True,
+    }, {
+        'url': 'https://www.npostart.nl/broodje-gezond-ei/28-05-2018/KN_1698996',
+        'only_matching': True,
+    }, {
+        'url': 'https://npo.nl/KN_1698996',
+        'only_matching': True,
     }]
 
+    @classmethod
+    def suitable(cls, url):
+        return (False if any(ie.suitable(url)
+                for ie in (NPOLiveIE, NPORadioIE, NPORadioFragmentIE))
+                else super(NPOIE, cls).suitable(url))
+
     def _real_extract(self, url):
         video_id = self._match_id(url)
         return self._get_info(video_id)
@@ -389,7 +401,7 @@ class NPOLiveIE(NPOBaseIE):
 
 class NPORadioIE(InfoExtractor):
     IE_NAME = 'npo.nl:radio'
-    _VALID_URL = r'https?://(?:www\.)?npo\.nl/radio/(?P<id>[^/]+)/?$'
+    _VALID_URL = r'https?://(?:www\.)?npo\.nl/radio/(?P<id>[^/]+)'
 
     _TEST = {
         'url': 'http://www.npo.nl/radio/radio-1',
@@ -404,6 +416,10 @@ class NPORadioIE(InfoExtractor):
         }
     }
 
+    @classmethod
+    def suitable(cls, url):
+        return False if NPORadioFragmentIE.suitable(url) else super(NPORadioIE, cls).suitable(url)
+
     @staticmethod
     def _html_get_attribute_regex(attribute):
         return r'{0}\s*=\s*\'([^\']+)\''.format(attribute)