diff --git a/src/wp-includes/class-oembed.php b/src/wp-includes/class-oembed.php
index 25dc08fe44..2178a24523 100644
--- a/src/wp-includes/class-oembed.php
+++ b/src/wp-includes/class-oembed.php
@@ -60,7 +60,7 @@ class WP_oEmbed {
 			'#https?://youtu\.be/.*#i'                            => array( 'https://www.youtube.com/oembed',                            true  ),
 			'#https?://(.+\.)?vimeo\.com/.*#i'                    => array( 'https://vimeo.com/api/oembed.{format}',                     true  ),
 			'#https?://(www\.)?dailymotion\.com/.*#i'             => array( 'https://www.dailymotion.com/services/oembed',               true  ),
-			'#https?://dai.ly/.*#i'                               => array( 'https://www.dailymotion.com/services/oembed',               true  ),
+			'#https?://dai\.ly/.*#i'                              => array( 'https://www.dailymotion.com/services/oembed',               true  ),
 			'#https?://(www\.)?flickr\.com/.*#i'                  => array( 'https://www.flickr.com/services/oembed/',                   true  ),
 			'#https?://flic\.kr/.*#i'                             => array( 'https://www.flickr.com/services/oembed/',                   true  ),
 			'#https?://(.+\.)?smugmug\.com/.*#i'                  => array( 'https://api.smugmug.com/services/oembed/',                  true  ),
@@ -68,14 +68,14 @@ class WP_oEmbed {
 			'http://i*.photobucket.com/albums/*'                  => array( 'http://api.photobucket.com/oembed',                         false ),
 			'http://gi*.photobucket.com/groups/*'                 => array( 'http://api.photobucket.com/oembed',                         false ),
 			'#https?://(www\.)?scribd\.com/doc/.*#i'              => array( 'https://www.scribd.com/services/oembed',                    true  ),
-			'#https?://wordpress.tv/.*#i'                         => array( 'https://wordpress.tv/oembed/',                              true  ),
+			'#https?://wordpress\.tv/.*#i'                        => array( 'https://wordpress.tv/oembed/',                              true  ),
 			'#https?://(.+\.)?polldaddy\.com/.*#i'                => array( 'https://polldaddy.com/oembed/',                             true  ),
 			'#https?://poll\.fm/.*#i'                             => array( 'https://polldaddy.com/oembed/',                             true  ),
 			'#https?://(www\.)?funnyordie\.com/videos/.*#i'       => array( 'http://www.funnyordie.com/oembed',                          true  ),
 			'#https?://(www\.)?twitter\.com/.+?/status(es)?/.*#i' => array( 'https://publish.twitter.com/oembed',                        true  ),
 			'#https?://(www\.)?twitter\.com/.+?/timelines/.*#i'   => array( 'https://publish.twitter.com/oembed',                        true  ),
 			'#https?://(www\.)?twitter\.com/i/moments/.*#i'       => array( 'https://publish.twitter.com/oembed',                        true  ),
-			'#https?://vine.co/v/.*#i'                            => array( 'https://vine.co/oembed.{format}',                           true  ),
+			'#https?://vine\.co/v/.*#i'                           => array( 'https://vine.co/oembed.{format}',                           true  ),
 			'#https?://(www\.)?soundcloud\.com/.*#i'              => array( 'https://soundcloud.com/oembed',                             true  ),
 			'#https?://(.+?\.)?slideshare\.net/.*#i'              => array( 'https://www.slideshare.net/api/oembed/2',                   true  ),
 			'#https?://(www\.)?instagr(\.am|am\.com)/p/.*#i'      => array( 'https://api.instagram.com/oembed',                          true  ),
@@ -92,7 +92,7 @@ class WP_oEmbed {
 			'#https?://kck\.st/.*#i'                              => array( 'https://www.kickstarter.com/services/oembed',               true  ),
 			'#https?://cloudup\.com/.*#i'                         => array( 'https://cloudup.com/oembed',                                true  ),
 			'#https?://(www\.)?reverbnation\.com/.*#i'            => array( 'https://www.reverbnation.com/oembed',                       true  ),
-			'#https?://videopress.com/v/.*#'                      => array( 'https://public-api.wordpress.com/oembed/1.0/?for=' . $host, true  ),
+			'#https?://videopress\.com/v/.*#'                     => array( 'https://public-api.wordpress.com/oembed/1.0/?for=' . $host, true  ),
 			'#https?://(www\.)?reddit\.com/r/[^/]+/comments/.*#i' => array( 'https://www.reddit.com/oembed',                             true  ),
 			'#https?://(www\.)?speakerdeck\.com/.*#i'             => array( 'https://speakerdeck.com/oembed.{format}',                   true  ),
 			'#https?://www\.facebook\.com/.*/posts/.*#i'          => array( 'https://www.facebook.com/plugins/post/oembed.json/',        true  ),
diff --git a/tests/phpunit/tests/oembed.php b/tests/phpunit/tests/oembed.php
index 6f8787d8c4..f46ac07e9e 100644
--- a/tests/phpunit/tests/oembed.php
+++ b/tests/phpunit/tests/oembed.php
@@ -8,7 +8,7 @@ class Tests_oEmbed extends WP_UnitTestCase {
 		'youtube-shorturl'     => '#https?://youtu\.be/.*#i',
 		'vimeo'                => '#https?://(.+\.)?vimeo\.com/.*#i',
 		'dailymotion'          => '#https?://(www\.)?dailymotion\.com/.*#i',
-		'dailymotion-shorturl' => '#https?://dai.ly/.*#i',
+		'dailymotion-shorturl' => '#https?://dai\.ly/.*#i',
 		'flickr'               => '#https?://(www\.)?flickr\.com/.*#i',
 		'flickr-shorturl'      => '#https?://flic\.kr/.*#i',
 		'smugmug'              => '#https?://(.+\.)?smugmug\.com/.*#i',
@@ -16,14 +16,14 @@ class Tests_oEmbed extends WP_UnitTestCase {
 		'photobucket-album'    => 'http://i*.photobucket.com/albums/*',
 		'photobucket-group'    => 'http://gi*.photobucket.com/groups/*',
 		'scribd'               => '#https?://(www\.)?scribd\.com/doc/.*#i',
-		'wordpress-tv'         => '#https?://wordpress.tv/.*#i',
+		'wordpress-tv'         => '#https?://wordpress\.tv/.*#i',
 		'polldaddy'            => '#https?://(.+\.)?polldaddy\.com/.*#i',
 		'polldaddy-shorturl'   => '#https?://poll\.fm/.*#i',
 		'funnyordie'           => '#https?://(www\.)?funnyordie\.com/videos/.*#i',
 		'twitter'              => '#https?://(www\.)?twitter\.com/.+?/status(es)?/.*#i',
 		'twitter-timeline'     => '#https?://(www\.)?twitter\.com/.+?/timelines/.*#i',
 		'twitter-moment'       => '#https?://(www\.)?twitter\.com/i/moments/.*#i',
-		'vine'                 => '#https?://vine.co/v/.*#i',
+		'vine'                 => '#https?://vine\.co/v/.*#i',
 		'soundcloud'           => '#https?://(www\.)?soundcloud\.com/.*#i',
 		'slideshare'           => '#https?://(.+?\.)?slideshare\.net/.*#i',
 		'instagram'            => '#https?://(www\.)?instagr(\.am|am\.com)/p/.*#i',
@@ -40,7 +40,7 @@ class Tests_oEmbed extends WP_UnitTestCase {
 		'kickstarter-shorturl' => '#https?://kck\.st/.*#i',
 		'cloudup'              => '#https?://cloudup\.com/.*#i',
 		'reverbnation'         => '#https?://(www\.)?reverbnation\.com/.*#i',
-		'videopress'           => '#https?://videopress.com/v/.*#',
+		'videopress'           => '#https?://videopress\.com/v/.*#',
 		'reddit-comments'      => '#https?://(www\.)?reddit\.com/r/[^/]+/comments/.*#i',
 		'speakerdeck'          => '#https?://(www\.)?speakerdeck\.com/.*#i',
 		'facebook-post'        => '#https?://www\.facebook\.com/.*/posts/.*#i',
@@ -812,4 +812,37 @@ class Tests_oEmbed extends WP_UnitTestCase {
 
 	}
 
+	/**
+	 * Test URLs that should not match any of the predefined providers.
+	 *
+	 * @group oembed
+	 * @ticket 38187
+	 *
+	 * @dataProvider dataShouldNotMatchOembedRegex
+	 */
+	public function testUrlShouldNotMatchOembedRegex( $url ) {
+
+		$this->assertSame( false, self::$oembed->get_provider( $url, array( 'discover' => false ) ) );
+
+	}
+
+	/**
+	 * Data provider for testUrlShouldNotMatchOembedRegex().
+	 *
+	 * @return array
+	 */
+	public function dataShouldNotMatchOembedRegex() {
+		$providers = self::$provider_map;
+
+		return array(
+			array( 'http://dairly/something' ),
+			array( 'https://daisly/' ),
+			array( 'http://wordpressstv/' ),
+			array( 'https://wordpressstv/somethingelse' ),
+			array( 'http://vinerco/v/andanother' ),
+			array( 'https://vineqco/v/' ),
+			array( 'http://videopressscom/v/' ),
+			array( 'https://videopresstcom/v/covered' ),
+		);
+	}
 }