diff --git a/src/Domains/Domain.php b/src/Domains/Domain.php
index e503508..3f7d088 100644
--- a/src/Domains/Domain.php
+++ b/src/Domains/Domain.php
@@ -46,6 +46,13 @@ class Domain
      */
     protected $sub = '';
 
+    /**
+     * PSL rule matching suffix
+     *
+     * @var string
+     */
+    protected $rule = '';
+
     /**
      * Domain Parts
      *
@@ -105,11 +112,29 @@ public function getSuffix(): string
             return $this->suffix;
         }
 
-        for ($i = 3; $i > 0; $i--) {
-            $joined = \implode('.', \array_slice($this->parts, $i * -1));
+        for ($i = 0; $i < count($this->parts); $i++) {
+            $joined = \implode('.', \array_slice($this->parts, $i));
+            $next = \implode('.', \array_slice($this->parts, $i + 1));
+            $exception = '!'.$joined;
+            $wildcard = '*.'.$next;
+
+            if (\array_key_exists($exception, self::$list)) {
+                $this->suffix = $next;
+                $this->rule = $exception;
+
+                return $next;
+            }
 
             if (\array_key_exists($joined, self::$list)) {
                 $this->suffix = $joined;
+                $this->rule = $joined;
+
+                return $joined;
+            }
+
+            if (\array_key_exists($wildcard, self::$list)) {
+                $this->suffix = $joined;
+                $this->rule = $wildcard;
 
                 return $joined;
             }
@@ -118,6 +143,14 @@ public function getSuffix(): string
         return '';
     }
 
+    public function getRule(): string
+    {
+        if (! $this->rule) {
+            $this->getSuffix();
+        }
+        return $this->rule;
+    }
+
     /**
      * Returns registerable domain name
      */
@@ -176,7 +209,7 @@ public function getSub(): string
      */
     public function isKnown(): bool
     {
-        if (\array_key_exists($this->getSuffix(), self::$list)) {
+        if (\array_key_exists($this->getRule(), self::$list)) {
             return true;
         }
 
@@ -188,7 +221,7 @@ public function isKnown(): bool
      */
     public function isICANN(): bool
     {
-        if (isset(self::$list[$this->getSuffix()]) && self::$list[$this->getSuffix()]['type'] === 'ICANN') {
+        if (isset(self::$list[$this->getRule()]) && self::$list[$this->getRule()]['type'] === 'ICANN') {
             return true;
         }
 
@@ -200,7 +233,7 @@ public function isICANN(): bool
      */
     public function isPrivate(): bool
     {
-        if (isset(self::$list[$this->getSuffix()]) && self::$list[$this->getSuffix()]['type'] === 'PRIVATE') {
+        if (isset(self::$list[$this->getRule()]) && self::$list[$this->getRule()]['type'] === 'PRIVATE') {
             return true;
         }
 
diff --git a/tests/DomainTest.php b/tests/DomainTest.php
index 9cebcfb..28e3f59 100755
--- a/tests/DomainTest.php
+++ b/tests/DomainTest.php
@@ -211,4 +211,148 @@ public function testHTTPSException2(): void
 
         new Domain('https://facbook.com');
     }
+
+    public function testExampleExampleCk(): void
+    {
+        $domain = new Domain('example.example.ck');
+
+        $this->assertEquals('example.example.ck', $domain->get());
+        $this->assertEquals('ck', $domain->getTLD());
+        $this->assertEquals('example.ck', $domain->getSuffix());
+        $this->assertEquals('example.example.ck', $domain->getRegisterable());
+        $this->assertEquals('example', $domain->getName());
+        $this->assertEquals('', $domain->getSub());
+        $this->assertEquals(true, $domain->isKnown());
+        $this->assertEquals(true, $domain->isICANN());
+        $this->assertEquals(false, $domain->isPrivate());
+        $this->assertEquals(false, $domain->isTest());
+    }
+
+    public function testSubSubExampleExampleCk(): void
+    {
+        $domain = new Domain('subsub.demo.example.example.ck');
+
+        $this->assertEquals('subsub.demo.example.example.ck', $domain->get());
+        $this->assertEquals('ck', $domain->getTLD());
+        $this->assertEquals('example.ck', $domain->getSuffix());
+        $this->assertEquals('example.example.ck', $domain->getRegisterable());
+        $this->assertEquals('example', $domain->getName());
+        $this->assertEquals('subsub.demo', $domain->getSub());
+        $this->assertEquals(true, $domain->isKnown());
+        $this->assertEquals(true, $domain->isICANN());
+        $this->assertEquals(false, $domain->isPrivate());
+        $this->assertEquals(false, $domain->isTest());
+    }
+
+    public function testWwwCk(): void
+    {
+        $domain = new Domain('www.ck');
+
+        $this->assertEquals('www.ck', $domain->get());
+        $this->assertEquals('ck', $domain->getTLD());
+        $this->assertEquals('ck', $domain->getSuffix());
+        $this->assertEquals('www.ck', $domain->getRegisterable());
+        $this->assertEquals('www', $domain->getName());
+        $this->assertEquals('', $domain->getSub());
+        $this->assertEquals(true, $domain->isKnown());
+        $this->assertEquals(true, $domain->isICANN());
+        $this->assertEquals(false, $domain->isPrivate());
+        $this->assertEquals(false, $domain->isTest());
+    }
+
+    public function testSubSubWwwCk(): void
+    {
+        $domain = new Domain('subsub.demo.www.ck');
+
+        $this->assertEquals('subsub.demo.www.ck', $domain->get());
+        $this->assertEquals('ck', $domain->getTLD());
+        $this->assertEquals('ck', $domain->getSuffix());
+        $this->assertEquals('www.ck', $domain->getRegisterable());
+        $this->assertEquals('www', $domain->getName());
+        $this->assertEquals('subsub.demo', $domain->getSub());
+        $this->assertEquals(true, $domain->isKnown());
+        $this->assertEquals(true, $domain->isICANN());
+        $this->assertEquals(false, $domain->isPrivate());
+        $this->assertEquals(false, $domain->isTest());
+    }
+
+    public function testWildcardNomBr(): void
+    {
+        $domain = new Domain('sub.example.com.nom.br');
+
+        $this->assertEquals('sub.example.com.nom.br', $domain->get());
+        $this->assertEquals('br', $domain->getTLD());
+        $this->assertEquals('com.nom.br', $domain->getSuffix());
+        $this->assertEquals('example.com.nom.br', $domain->getRegisterable());
+        $this->assertEquals('example', $domain->getName());
+        $this->assertEquals('sub', $domain->getSub());
+        $this->assertEquals(true, $domain->isKnown());
+        $this->assertEquals(true, $domain->isICANN());
+        $this->assertEquals(false, $domain->isPrivate());
+        $this->assertEquals(false, $domain->isTest());
+    }
+
+    public function testWildcardKawasakiJp(): void
+    {
+        $domain = new Domain('sub.example.com.kawasaki.jp');
+
+        $this->assertEquals('sub.example.com.kawasaki.jp', $domain->get());
+        $this->assertEquals('jp', $domain->getTLD());
+        $this->assertEquals('com.kawasaki.jp', $domain->getSuffix());
+        $this->assertEquals('example.com.kawasaki.jp', $domain->getRegisterable());
+        $this->assertEquals('example', $domain->getName());
+        $this->assertEquals('sub', $domain->getSub());
+        $this->assertEquals(true, $domain->isKnown());
+        $this->assertEquals(true, $domain->isICANN());
+        $this->assertEquals(false, $domain->isPrivate());
+        $this->assertEquals(false, $domain->isTest());
+    }
+
+    public function testExceptionKawasakiJp(): void
+    {
+        $domain = new Domain('sub.city.kawasaki.jp');
+
+        $this->assertEquals('sub.city.kawasaki.jp', $domain->get());
+        $this->assertEquals('jp', $domain->getTLD());
+        $this->assertEquals('kawasaki.jp', $domain->getSuffix());
+        $this->assertEquals('city.kawasaki.jp', $domain->getRegisterable());
+        $this->assertEquals('city', $domain->getName());
+        $this->assertEquals('sub', $domain->getSub());
+        $this->assertEquals(true, $domain->isKnown());
+        $this->assertEquals(true, $domain->isICANN());
+        $this->assertEquals(false, $domain->isPrivate());
+        $this->assertEquals(false, $domain->isTest());
+    }
+
+    public function testWildcardPrivateDomain(): void
+    {
+        $domain = new Domain('sub.example.com.dev.adobeaemcloud.com');
+
+        $this->assertEquals('sub.example.com.dev.adobeaemcloud.com', $domain->get());
+        $this->assertEquals('com', $domain->getTLD());
+        $this->assertEquals('com.dev.adobeaemcloud.com', $domain->getSuffix());
+        $this->assertEquals('example.com.dev.adobeaemcloud.com', $domain->getRegisterable());
+        $this->assertEquals('example', $domain->getName());
+        $this->assertEquals('sub', $domain->getSub());
+        $this->assertEquals(true, $domain->isKnown());
+        $this->assertEquals(false, $domain->isICANN());
+        $this->assertEquals(true, $domain->isPrivate());
+        $this->assertEquals(false, $domain->isTest());
+    }
+
+    public function testPrivateDomain(): void
+    {
+        $domain = new Domain('sub.example.adobeaemcloud.net');
+
+        $this->assertEquals('sub.example.adobeaemcloud.net', $domain->get());
+        $this->assertEquals('net', $domain->getTLD());
+        $this->assertEquals('adobeaemcloud.net', $domain->getSuffix());
+        $this->assertEquals('example.adobeaemcloud.net', $domain->getRegisterable());
+        $this->assertEquals('example', $domain->getName());
+        $this->assertEquals('sub', $domain->getSub());
+        $this->assertEquals(true, $domain->isKnown());
+        $this->assertEquals(false, $domain->isICANN());
+        $this->assertEquals(true, $domain->isPrivate());
+        $this->assertEquals(false, $domain->isTest());
+    }
 }