diff --git a/apps/cm/app/api/proxy/[...url]/route.ts b/apps/cm/app/api/proxy/[...url]/route.ts
index ca15a1447..761991e39 100644
--- a/apps/cm/app/api/proxy/[...url]/route.ts
+++ b/apps/cm/app/api/proxy/[...url]/route.ts
@@ -101,19 +101,11 @@ async function handler(
         [AUTH_USER_ID]: userId,
         ...responseData, // 2FA 관련 추가 데이터 포함
       });
-      const hostname = window.location.hostname;
-      let domain = hostname === "localhost" || hostname === "127.0.0.1" ? undefined : hostname;
-      
-      // 운영 환경에서는 서브도메인을 포함한 최상위 도메인 사용
-      if (hostname.includes("hasuon.or.kr")) {
-         domain = ".hasuon.or.kr";
-      }
 
       if (refreshToken) {
         cookieStore.set(REFRESH_TOKEN, refreshToken, {
           httpOnly: true,
           sameSite: "lax",
-          domain: domain,
           path: "/",
         });
       }
diff --git a/apps/cs/app/api/proxy/[...url]/route.ts b/apps/cs/app/api/proxy/[...url]/route.ts
index 07fa4376f..7442c702f 100644
--- a/apps/cs/app/api/proxy/[...url]/route.ts
+++ b/apps/cs/app/api/proxy/[...url]/route.ts
@@ -61,19 +61,12 @@ async function handler(
       });
 
       
-      const hostname = window.location.hostname;
-      let domain = hostname === "localhost" || hostname === "127.0.0.1" ? undefined : hostname;
-      
-      // 운영 환경에서는 서브도메인을 포함한 최상위 도메인 사용
-      if (hostname.includes("hasuon.or.kr")) {
-         domain = ".hasuon.or.kr";
-      }
 
       if (refreshToken) {
         cookieStore.set(REFRESH_TOKEN, refreshToken, {
           httpOnly: true,
           sameSite: "lax",
-          domain: domain,
+//          domain: domain,
           path: "/",
         });
       }
diff --git a/apps/cs/src/pages/users/api/zip-service.ts b/apps/cs/src/pages/users/api/zip-service.ts
index 211638344..ebc7e8c91 100644
--- a/apps/cs/src/pages/users/api/zip-service.ts
+++ b/apps/cs/src/pages/users/api/zip-service.ts
@@ -10,6 +10,8 @@ export interface ZipSearchParams extends PageableParams {
   roadNm?: string; // 도로명
   stdgNm?: string; // 법정동명
   dongNm?: string; // 행정동명
+  bldgNoMno?: number | null; // 빌딩본번
+  bldgNoSno?: number | null; // 빌딩딩부번
   lotnoMno?: number | null; // 지번본번
   lotnoSno?: number | null; // 지번부번
 }
@@ -21,6 +23,8 @@ export interface Zip {
   sggNm: string;
   emdNm: string;
   roadNm: string;
+  bldgNoMno: number;
+  bldgNoSno: number;
   lotnoMno: number;
   lotnoSno: number;
   lotno: string;
diff --git a/apps/cs/src/pages/users/ui/zip-search-dialog.tsx b/apps/cs/src/pages/users/ui/zip-search-dialog.tsx
index baab27619..bf2160ea8 100644
--- a/apps/cs/src/pages/users/ui/zip-search-dialog.tsx
+++ b/apps/cs/src/pages/users/ui/zip-search-dialog.tsx
@@ -39,8 +39,8 @@ function ZipSearchDialog({ onSelectAddress }: ZipSearchDialogProps) {
   });
   const [searchQuery, setSearchQuery] = useState<ZipSearchParams>({
     roadNm: "",
-    lotnoMno: null,
-    lotnoSno: null,
+    bldgNoMno: null,
+    bldgNoSno: null,
   });
   const hasFetchedOnce = useRef(false);
 
@@ -156,17 +156,17 @@ function ZipSearchDialog({ onSelectAddress }: ZipSearchDialogProps) {
               </div>
 
               <div className="flex flex-col">
-                <Label className="mb-1 text-base">지번본번</Label>
+                <Label className="mb-1 text-base">건물본번</Label>
                 <Input
                   type="number"
-                  value={searchQuery.lotnoMno ?? ""}
+                  value={searchQuery.bldgNoMno ?? ""}
                   onChange={(e) => {
                     const value = e.target.value
                       ? parseInt(e.target.value)
                       : null;
                     setSearchQuery({
                       ...searchQuery,
-                      lotnoMno: value,
+                      bldgNoMno: value,
                     });
                   }}
                   placeholder="예: 123"
@@ -175,17 +175,17 @@ function ZipSearchDialog({ onSelectAddress }: ZipSearchDialogProps) {
               </div>
 
               <div className="flex flex-col">
-                <Label className="mb-1 text-base">지번부번</Label>
+                <Label className="mb-1 text-base">건물부번</Label>
                 <Input
                   type="number"
-                  value={searchQuery.lotnoSno ?? ""}
+                  value={searchQuery.bldgNoSno ?? ""}
                   onChange={(e) => {
                     const value = e.target.value
                       ? parseInt(e.target.value)
                       : null;
                     setSearchQuery({
                       ...searchQuery,
-                      lotnoSno: value,
+                      bldgNoSno: value,
                     });
                   }}
                   placeholder="예: 45"