diff --git a/src/Http/Middleware/EnsureFrontendRequestsAreStateful.php b/src/Http/Middleware/EnsureFrontendRequestsAreStateful.php
index 18589cb..6799589 100644
--- a/src/Http/Middleware/EnsureFrontendRequestsAreStateful.php
+++ b/src/Http/Middleware/EnsureFrontendRequestsAreStateful.php
@@ -3,9 +3,6 @@
 namespace Laravel\Sanctum\Http\Middleware;
 
 use Illuminate\Routing\Pipeline;
-use Illuminate\Support\Collection;
-use Illuminate\Support\Str;
-use Laravel\Sanctum\Sanctum;
 
 class EnsureFrontendRequestsAreStateful
 {
@@ -20,11 +17,16 @@ public function handle($request, $next)
     {
         $this->configureSecureCookieSessions();
 
-        return (new Pipeline(app()))->send($request)->through(
-            static::fromFrontend($request) ? $this->frontendMiddleware() : []
-        )->then(function ($request) use ($next) {
-            return $next($request);
-        });
+        $middleware = FrontendRequestChecker::isFromFrontend($request)
+            ? $this->frontendMiddleware()
+            : [];
+
+        return (new Pipeline(app()))
+            ->send($request)
+            ->through($middleware)
+            ->then(function ($request) use ($next) {
+                return $next($request);
+            });
     }
 
     /**
@@ -63,31 +65,4 @@ protected function frontendMiddleware()
 
         return $middleware;
     }
-
-    /**
-     * Determine if the given request is from the first-party application frontend.
-     *
-     * @param  \Illuminate\Http\Request  $request
-     * @return bool
-     */
-    public static function fromFrontend($request)
-    {
-        $domain = $request->headers->get('referer') ?: $request->headers->get('origin');
-
-        if (is_null($domain)) {
-            return false;
-        }
-
-        $domain = Str::replaceFirst('https://', '', $domain);
-        $domain = Str::replaceFirst('http://', '', $domain);
-        $domain = Str::endsWith($domain, '/') ? $domain : "{$domain}/";
-
-        $stateful = array_filter(config('sanctum.stateful', []));
-
-        return Str::is(Collection::make($stateful)->map(function ($uri) use ($request) {
-            $uri = $uri === Sanctum::$currentRequestHostPlaceholder ? $request->getHttpHost() : $uri;
-
-            return trim($uri).'/*';
-        })->all(), $domain);
-    }
 }
diff --git a/src/Http/Middleware/FrontendRequestChecker.php b/src/Http/Middleware/FrontendRequestChecker.php
new file mode 100644
index 0000000..5aee917
--- /dev/null
+++ b/src/Http/Middleware/FrontendRequestChecker.php
@@ -0,0 +1,69 @@
+<?php
+
+namespace Laravel\Sanctum\Http\Middleware;
+
+use Illuminate\Http\Request;
+use Illuminate\Support\Collection;
+use Illuminate\Support\Str;
+use Laravel\Sanctum\Sanctum;
+
+class FrontendRequestChecker
+{
+    /**
+     * Determine if the given request is from the first-party application frontend.
+     *
+     * @param  \Illuminate\Http\Request  $request
+     * @return bool
+     */
+    public static function isFromFrontend(Request $request): bool
+    {
+        $domain = self::getDomain($request);
+
+        if (is_null($domain)) {
+            return false;
+        }
+
+        $stateful = array_filter(config('sanctum.stateful', []));
+
+        $patterns = self::getStatefulDomainPatterns($stateful, $request);
+
+        return Str::is($patterns, $domain);
+    }
+
+    /**
+     * Get the domain from the request.
+     *
+     * @param  \Illuminate\Http\Request  $request
+     * @return string|null
+     */
+    private static function getDomain(Request $request): ?string
+    {
+        $domain = $request->headers->get('referer') ?: $request->headers->get('origin');
+
+        if (is_null($domain)) {
+            return null;
+        }
+
+        $domain = Str::of($domain)->after('://')->finish('/');
+
+        return (string) $domain;
+    }
+
+    /**
+     * Get the stateful domain patterns.
+     *
+     * @param  array  $stateful
+     * @param  \Illuminate\Http\Request  $request
+     * @return array
+     */
+    private static function getStatefulDomainPatterns(array $stateful, Request $request): array
+    {
+        return Collection::make($stateful)->map(function ($uri) use ($request) {
+            if ($uri === Sanctum::$currentRequestHostPlaceholder) {
+                return trim($request->getHttpHost()).'/*';
+            }
+
+            return trim($uri).'/*';
+        })->all();
+    }
+}
diff --git a/tests/Feature/DefaultConfigContainsAppUrlTest.php b/tests/Feature/DefaultConfigContainsAppUrlTest.php
index 0bb6f60..dcd858b 100644
--- a/tests/Feature/DefaultConfigContainsAppUrlTest.php
+++ b/tests/Feature/DefaultConfigContainsAppUrlTest.php
@@ -3,7 +3,7 @@
 namespace Laravel\Sanctum\Tests\Feature;
 
 use Illuminate\Http\Request;
-use Laravel\Sanctum\Http\Middleware\EnsureFrontendRequestsAreStateful;
+use Laravel\Sanctum\Http\Middleware\FrontendRequestChecker;
 use Orchestra\Testbench\Concerns\WithWorkbench;
 use Orchestra\Testbench\TestCase;
 
@@ -52,6 +52,6 @@ public function test_request_from_app_url_is_stateful_with_default_config()
 
         $request->headers->set('referer', config('app.url'));
 
-        $this->assertTrue(EnsureFrontendRequestsAreStateful::fromFrontend($request));
+        $this->assertTrue(FrontendRequestChecker::isFromFrontend($request));
     }
 }
diff --git a/tests/Feature/EnsureFrontendRequestsAreStatefulTest.php b/tests/Feature/EnsureFrontendRequestsAreStatefulTest.php
index 311724e..1a3de42 100644
--- a/tests/Feature/EnsureFrontendRequestsAreStatefulTest.php
+++ b/tests/Feature/EnsureFrontendRequestsAreStatefulTest.php
@@ -3,7 +3,7 @@
 namespace Laravel\Sanctum\Tests\Feature;
 
 use Illuminate\Http\Request;
-use Laravel\Sanctum\Http\Middleware\EnsureFrontendRequestsAreStateful;
+use Laravel\Sanctum\Http\Middleware\FrontendRequestChecker;
 use Laravel\Sanctum\Sanctum;
 use Orchestra\Testbench\Concerns\WithWorkbench;
 use Orchestra\Testbench\TestCase;
@@ -22,22 +22,22 @@ public function test_request_referer_is_parsed_against_configuration()
         $request = Request::create('/');
         $request->headers->set('referer', 'https://test.com');
 
-        $this->assertTrue(EnsureFrontendRequestsAreStateful::fromFrontend($request));
+        $this->assertTrue(FrontendRequestChecker::isFromFrontend($request));
 
         $request = Request::create('/');
         $request->headers->set('referer', 'https://wrong.com');
 
-        $this->assertFalse(EnsureFrontendRequestsAreStateful::fromFrontend($request));
+        $this->assertFalse(FrontendRequestChecker::isFromFrontend($request));
 
         $request = Request::create('/');
         $request->headers->set('referer', 'https://test.com.x');
 
-        $this->assertFalse(EnsureFrontendRequestsAreStateful::fromFrontend($request));
+        $this->assertFalse(FrontendRequestChecker::isFromFrontend($request));
 
         $request = Request::create('/');
         $request->headers->set('referer', 'https://foobar.test.com/');
 
-        $this->assertTrue(EnsureFrontendRequestsAreStateful::fromFrontend($request));
+        $this->assertTrue(FrontendRequestChecker::isFromFrontend($request));
     }
 
     public function test_request_origin_fallback()
@@ -45,19 +45,19 @@ public function test_request_origin_fallback()
         $request = Request::create('/');
         $request->headers->set('origin', 'test.com');
 
-        $this->assertTrue(EnsureFrontendRequestsAreStateful::fromFrontend($request));
+        $this->assertTrue(FrontendRequestChecker::isFromFrontend($request));
 
         $request = Request::create('/');
         $request->headers->set('referer', null);
         $request->headers->set('origin', 'test.com');
 
-        $this->assertTrue(EnsureFrontendRequestsAreStateful::fromFrontend($request));
+        $this->assertTrue(FrontendRequestChecker::isFromFrontend($request));
 
         $request = Request::create('/');
         $request->headers->set('referer', '');
         $request->headers->set('origin', 'test.com');
 
-        $this->assertTrue(EnsureFrontendRequestsAreStateful::fromFrontend($request));
+        $this->assertTrue(FrontendRequestChecker::isFromFrontend($request));
     }
 
     public function test_same_domain_stateful()
@@ -66,10 +66,10 @@ public function test_same_domain_stateful()
         $request->headers->set('origin', 'app-domain.com');
 
         config(['sanctum.stateful' => []]);
-        $this->assertFalse(EnsureFrontendRequestsAreStateful::fromFrontend($request));
+        $this->assertFalse(FrontendRequestChecker::isFromFrontend($request));
 
         config(['sanctum.stateful' => [Sanctum::$currentRequestHostPlaceholder]]);
-        $this->assertTrue(EnsureFrontendRequestsAreStateful::fromFrontend($request));
+        $this->assertTrue(FrontendRequestChecker::isFromFrontend($request));
     }
 
     public function test_wildcard_matching()
@@ -77,7 +77,7 @@ public function test_wildcard_matching()
         $request = Request::create('/');
         $request->headers->set('referer', 'https://foo.test.com');
 
-        $this->assertTrue(EnsureFrontendRequestsAreStateful::fromFrontend($request));
+        $this->assertTrue(FrontendRequestChecker::isFromFrontend($request));
     }
 
     public function test_requests_are_not_stateful_without_referer()
@@ -86,6 +86,6 @@ public function test_requests_are_not_stateful_without_referer()
 
         $request = Request::create('/');
 
-        $this->assertFalse(EnsureFrontendRequestsAreStateful::fromFrontend($request));
+        $this->assertFalse(FrontendRequestChecker::isFromFrontend($request));
     }
 }