diff --git a/METADATA-VERSION.php b/METADATA-VERSION.php
index 6fecbb20..42c552f3 100644
--- a/METADATA-VERSION.php
+++ b/METADATA-VERSION.php
@@ -6,4 +6,4 @@
  * For more information, look at the phing tasks in build.xml
  * @internal
  */
-return 'v8.13.52';
+return 'v8.13.53';
diff --git a/src/PhoneNumberUtil.php b/src/PhoneNumberUtil.php
index d8880db0..2bae41f1 100644
--- a/src/PhoneNumberUtil.php
+++ b/src/PhoneNumberUtil.php
@@ -2577,6 +2577,9 @@ public function formatOutOfCountryKeepingAlphaChars(PhoneNumber $number, string
         $regionCode = $this->getRegionCodeForCountryCode($countryCode);
         // Metadata cannot be null because the country calling code is valid.
         $metadataForRegion = $this->getMetadataForRegionOrCallingCode($countryCode, $regionCode);
+        // Strip any extension
+        $this->maybeStripExtension($formattedNumber);
+        // Append the formatted extension
         $this->maybeAppendFormattedExtension(
             $number,
             $metadataForRegion,
@@ -3450,6 +3453,12 @@ public function isPossibleNumber(PhoneNumber|string $number, ?string $regionDial
      *        length (obviously includes the length of area codes for fixed line numbers), it will
      *        return false for the subscriber-number-only version.
      * </ol>
+     * There is a known <a href="https://issuetracker.google.com/issues/335892662">issue</a> with this
+     * method: if a number is possible only in a certain region among several regions that share the
+     * same country calling code, this method will consider only the "main" region. For example,
+     * +1310xxxx are valid numbers in Canada. However, they are not possible in the US. As a result,
+     * this method will return IS_POSSIBLE_LOCAL_ONLY for +1310xxxx.
+     *
      * @param PhoneNumber $number the number that needs to be checked
      * @return int a ValidationResult object which indicates whether the number is possible
      */
@@ -3480,6 +3489,12 @@ public function isPossibleNumberWithReason(PhoneNumber $number): int
      *        return false for the subscriber-number-only version.
      * </ol>
      *
+     * There is a known <a href="https://issuetracker.google.com/issues/335892662">issue</a> with this
+     * method: if a number is possible only in a certain region among several regions that share the
+     * same country calling code, this method will consider only the "main" region. For example,
+     * +1310xxxx are valid numbers in Canada. However, they are not possible in the US. As a result,
+     * this method will return IS_POSSIBLE_LOCAL_ONLY for +1310xxxx.
+     *
      * @param PhoneNumber $number the number that needs to be checked
      * @param int $type the PhoneNumberType we are interested in
      * @return int a ValidationResult object which indicates whether the number is possible
diff --git a/src/data/PhoneNumberMetadata_EH.php b/src/data/PhoneNumberMetadata_EH.php
index b234fc29..d425ce83 100644
--- a/src/data/PhoneNumberMetadata_EH.php
+++ b/src/data/PhoneNumberMetadata_EH.php
@@ -21,7 +21,7 @@
         'example' => '528812345',
     ],
     'mobile' => [
-        'pattern' => '(?:6(?:[0-79]\\d|8[0-247-9])|7(?:[0167]\\d|2[0-4]|5[01]|8[0-3]))\\d{6}',
+        'pattern' => '(?:6(?:[0-79]\\d|8[0-247-9])|7(?:[0167]\\d|2[0-467]|5[0-3]|8[0-5]))\\d{6}',
         'example' => '650123456',
     ],
     'tollFree' => [
diff --git a/src/data/PhoneNumberMetadata_IL.php b/src/data/PhoneNumberMetadata_IL.php
index 8eefc88b..3c1af00d 100644
--- a/src/data/PhoneNumberMetadata_IL.php
+++ b/src/data/PhoneNumberMetadata_IL.php
@@ -69,7 +69,7 @@
         ],
     ],
     'voip' => [
-        'pattern' => '7(?:38(?:0\\d|5[0-2569]|88)|8(?:33|55|77|81)\\d)\\d{4}|7(?:18|2[23]|3[237]|47|6[258]|7\\d|82|9[2-9])\\d{6}',
+        'pattern' => '7(?:38(?:0\\d|5[0-3569]|88)|8(?:33|55|77|81)\\d)\\d{4}|7(?:18|2[23]|3[237]|47|6[258]|7\\d|82|9[2-9])\\d{6}',
         'example' => '771234567',
         'posLength' => [
             9,
diff --git a/src/data/PhoneNumberMetadata_LV.php b/src/data/PhoneNumberMetadata_LV.php
index 52d58203..290d4258 100644
--- a/src/data/PhoneNumberMetadata_LV.php
+++ b/src/data/PhoneNumberMetadata_LV.php
@@ -21,7 +21,7 @@
         'example' => '63123456',
     ],
     'mobile' => [
-        'pattern' => '23(?:23[0-57-9]|33[0238])\\d{3}|2(?:[0-24-9]\\d\\d|3(?:0[07]|[14-9]\\d|2[024-9]|3[0-24-9]))\\d{4}',
+        'pattern' => '2333[0-8]\\d{3}|2(?:[0-24-9]\\d\\d|3(?:0[07]|[14-9]\\d|2[02-9]|3[0-24-9]))\\d{4}',
         'example' => '21234567',
     ],
     'tollFree' => [
diff --git a/src/data/PhoneNumberMetadata_MA.php b/src/data/PhoneNumberMetadata_MA.php
index 0cfc0fd0..3ff008a1 100644
--- a/src/data/PhoneNumberMetadata_MA.php
+++ b/src/data/PhoneNumberMetadata_MA.php
@@ -21,7 +21,7 @@
         'example' => '520123456',
     ],
     'mobile' => [
-        'pattern' => '(?:6(?:[0-79]\\d|8[0-247-9])|7(?:[0167]\\d|2[0-4]|5[01]|8[0-3]))\\d{6}',
+        'pattern' => '(?:6(?:[0-79]\\d|8[0-247-9])|7(?:[0167]\\d|2[0-467]|5[0-3]|8[0-5]))\\d{6}',
         'example' => '650123456',
     ],
     'tollFree' => [
diff --git a/src/data/PhoneNumberMetadata_MK.php b/src/data/PhoneNumberMetadata_MK.php
index ace5a986..c2110670 100644
--- a/src/data/PhoneNumberMetadata_MK.php
+++ b/src/data/PhoneNumberMetadata_MK.php
@@ -29,7 +29,7 @@
         ],
     ],
     'mobile' => [
-        'pattern' => '7(?:3555|(?:474|9[019]7)7)\\d{3}|7(?:[0-25-8]\\d\\d|3(?:[1-48]\\d|6[01]|7[01578])|4(?:2\\d|60|7[01578])|9(?:[2-4]\\d|5[01]|7[015]))\\d{4}',
+        'pattern' => '7(?:3555|(?:474|9[019]7)7)\\d{3}|7(?:[0-25-8]\\d\\d|3(?:[1-478]\\d|6[01])|4(?:2\\d|60|7[01578])|9(?:[2-4]\\d|5[01]|7[015]))\\d{4}',
         'example' => '72345678',
     ],
     'tollFree' => [
diff --git a/src/data/PhoneNumberMetadata_MM.php b/src/data/PhoneNumberMetadata_MM.php
index e6217307..7d79775c 100644
--- a/src/data/PhoneNumberMetadata_MM.php
+++ b/src/data/PhoneNumberMetadata_MM.php
@@ -69,7 +69,7 @@
         ],
     ],
     'voip' => [
-        'pattern' => '1333\\d{4}|[12]468\\d{4}',
+        'pattern' => '1333\\d{4}',
         'example' => '13331234',
         'posLength' => [
             8,
diff --git a/src/data/PhoneNumberMetadata_MU.php b/src/data/PhoneNumberMetadata_MU.php
index 8dc150aa..d62fd787 100644
--- a/src/data/PhoneNumberMetadata_MU.php
+++ b/src/data/PhoneNumberMetadata_MU.php
@@ -19,7 +19,7 @@
         ],
     ],
     'fixedLine' => [
-        'pattern' => '(?:2(?:[0346-8]\\d|1[0-7])|4(?:[013568]\\d|2[4-8]|71)|54(?:[3-5]\\d|71)|6\\d\\d|8(?:14|3[129]))\\d{4}',
+        'pattern' => '(?:2(?:[0346-8]\\d|1[0-7])|4(?:[013568]\\d|2[4-8]|71|90)|54(?:[3-5]\\d|71)|6\\d\\d|8(?:14|3[129]))\\d{4}',
         'example' => '54480123',
         'posLength' => [
             7,
diff --git a/src/data/PhoneNumberMetadata_PW.php b/src/data/PhoneNumberMetadata_PW.php
index 1a172f8f..b79f316d 100644
--- a/src/data/PhoneNumberMetadata_PW.php
+++ b/src/data/PhoneNumberMetadata_PW.php
@@ -21,7 +21,7 @@
         'example' => '2771234',
     ],
     'mobile' => [
-        'pattern' => '(?:(?:46|83)[0-5]|6[2-4689]0)\\d{4}|(?:45|77|88)\\d{5}',
+        'pattern' => '(?:(?:46|83)[0-5]|(?:6[2-4689]|78)0)\\d{4}|(?:45|77|88)\\d{5}',
         'example' => '6201234',
     ],
     'tollFree' => [
diff --git a/src/data/PhoneNumberMetadata_SO.php b/src/data/PhoneNumberMetadata_SO.php
index b8c8c8d2..f3bbdd52 100644
--- a/src/data/PhoneNumberMetadata_SO.php
+++ b/src/data/PhoneNumberMetadata_SO.php
@@ -28,7 +28,7 @@
         ],
     ],
     'mobile' => [
-        'pattern' => '(?:(?:15|(?:3[59]|4[89]|6\\d|7[79]|8[08])\\d|9(?:0\\d|[2-9]))\\d|2(?:4\\d|8))\\d{5}|(?:[67]\\d\\d|904)\\d{5}',
+        'pattern' => '(?:(?:15|(?:3[59]|4[89]|6\\d|7[679]|8[08])\\d|9(?:0\\d|[2-9]))\\d|2(?:4\\d|8))\\d{5}|(?:[67]\\d\\d|904)\\d{5}',
         'example' => '71123456',
         'posLength' => [
             7,
@@ -134,7 +134,7 @@
             'pattern' => '(\\d{2})(\\d{5,7})',
             'format' => '$1 $2',
             'leadingDigitsPatterns' => [
-                '1|28|6[0-35-9]|77|9[2-9]',
+                '1|28|6[0-35-9]|7[67]|9[2-9]',
             ],
             'nationalPrefixFormattingRule' => '',
             'domesticCarrierCodeFormattingRule' => '',
diff --git a/tests/core/PhoneNumberUtilTest.php b/tests/core/PhoneNumberUtilTest.php
index d31e5655..1dab19fc 100644
--- a/tests/core/PhoneNumberUtilTest.php
+++ b/tests/core/PhoneNumberUtilTest.php
@@ -875,6 +875,13 @@ public function testFormatOutOfCountryKeepingAlphaChars(): void
             $this->phoneUtil->formatOutOfCountryKeepingAlphaChars($alphaNumericNumber, RegionCode::BS)
         );
 
+        // Testing a number with extension.
+        $alphaNumericNumberWithExtn = $this->phoneUtil->parseAndKeepRawInput('800 SIX-flag ext. 1234', RegionCode::US);
+        $this->assertEquals(
+            '0011 1 800 SIX-FLAG extn. 1234',
+            $this->phoneUtil->formatOutOfCountryKeepingAlphaChars($alphaNumericNumberWithExtn, RegionCode::AU)
+        );
+
         // Testing that if the raw input doesn't exist, it is formatted using
         // formatOutOfCountryCallingNumber.
         $alphaNumericNumber->clearRawInput();