diff --git a/app/tests/Support/Imitation/ImitationTestCase.php b/app/tests/Support/Imitation/ImitationTestCase.php
index 66be7ec3..76001078 100644
--- a/app/tests/Support/Imitation/ImitationTestCase.php
+++ b/app/tests/Support/Imitation/ImitationTestCase.php
@@ -84,19 +84,35 @@ abstract class ImitationTestCase extends TestCase
      *                              Use App\Support\RussianRegions::nameToCode() for lookup.
      */
     protected function seedPhoneRange(
-        string $defCode,
-        string $from,
-        string $to,
+        int $defCode,
+        int $from,
+        int $to,
         int $subjectCode,
     ): void {
+        // Anchor phone_ranges_imports row first — phone_ranges.import_id is a
+        // required FK (migration 2026_05_31_100000). F1 fix: the previous version
+        // used non-existent columns (range_from/range_to/region_name) and omitted
+        // import_id, so every Россвязь-branch test that called it failed at runtime.
+        $importId = DB::table('phone_ranges_imports')->insertGetId([
+            'imported_at'     => now(),
+            'source_url'      => 'test://rossvyaz',
+            'rows_inserted'   => 1,
+            'rows_updated'    => 0,
+            'checksum_sha256' => str_repeat('0', 64),
+            'status'          => 'completed',
+            'completed_at'    => now(),
+        ]);
+
         DB::table('phone_ranges')->insert([
-            'def_code'     => $defCode,
-            'range_from'   => $from,
-            'range_to'     => $to,
-            'subject_code' => $subjectCode,
-            'region_name'  => '',
-            'operator'     => 'test-operator',
-            'imported_at'  => now(),
+            'def_code'          => $defCode,
+            'from_num'          => $from,
+            'to_num'            => $to,
+            'operator'          => 'test-operator',
+            'region'            => \App\Support\RussianRegions::CODE_TO_NAME[$subjectCode] ?? 'test-region',
+            'region_normalized' => null,
+            'subject_code'      => $subjectCode,
+            'imported_at'       => now(),
+            'import_id'         => $importId,
         ]);
     }
 }