diff --git a/src/main/java/com/palnet/biz/api/acnt/cstmr/controller/AcntCstmrController.java b/src/main/java/com/palnet/biz/api/acnt/cstmr/controller/AcntCstmrController.java
index dbcb39e..309a2b6 100644
--- a/src/main/java/com/palnet/biz/api/acnt/cstmr/controller/AcntCstmrController.java
+++ b/src/main/java/com/palnet/biz/api/acnt/cstmr/controller/AcntCstmrController.java
@@ -106,7 +106,15 @@ public class AcntCstmrController {
 		
 		return ResponseEntity.ok().body(new SuccessResponse<>(resultMap));
 	}
+	@PostMapping(value = "/find/certifNum")
+	   public String findUserId(String Hpno){
+	      String result = service.certifNum(Hpno);
+	      
+	         log.info("result>>>>>>>>>>>>>>>>>>>>>>>> {}",result);
 
+	      return result;
+	   }
+	}
 	
 	
 }
diff --git a/src/main/java/com/palnet/biz/api/acnt/cstmr/service/AcntCstmrService.java b/src/main/java/com/palnet/biz/api/acnt/cstmr/service/AcntCstmrService.java
index f11f8ff..86a2b29 100644
--- a/src/main/java/com/palnet/biz/api/acnt/cstmr/service/AcntCstmrService.java
+++ b/src/main/java/com/palnet/biz/api/acnt/cstmr/service/AcntCstmrService.java
@@ -134,7 +134,13 @@ public class AcntCstmrService {
 		
 		return rs;
 	}
-	
+	   public String certifNum(String Hpno){
+		      
+		      String resultFindId = query.certifNum(Hpno);
+		      log.debug(">>>>>>",resultFindId);
+		      return resultFindId;
+		   }
+
 	
 	public PtyCstmrBas savePtyCstmrBas(AcntCstmrRqModel rq) throws Exception{
 		
diff --git a/src/main/java/com/palnet/biz/jpa/repository/pty/PtyCstmrQueryRepository.java b/src/main/java/com/palnet/biz/jpa/repository/pty/PtyCstmrQueryRepository.java
index a65f65a..1657d88 100644
--- a/src/main/java/com/palnet/biz/jpa/repository/pty/PtyCstmrQueryRepository.java
+++ b/src/main/java/com/palnet/biz/jpa/repository/pty/PtyCstmrQueryRepository.java
@@ -49,7 +49,20 @@ public class PtyCstmrQueryRepository{
 		
 		return result;
 	}
-	
+	public String certifNum(String Hpno) {
+	      QPtyCrtfyhpBas bas = QPtyCrtfyhpBas.ptyCrtfyhpBas;
+	      
+	      BooleanBuilder builder = new BooleanBuilder();
+	      builder.and(bas.hpno.eq(Hpno));
+	      
+	      PtyCrtfyhpBas entity = query.select(bas)
+	            .from(bas)
+	            .where(builder)
+	            .orderBy(bas.createDt.desc())
+	            .fetchFirst();
+	      String certifNum = entity.getCrtfyhpNo();
+	      return certifNum;
+	   }
 	
 	
 	public boolean findCstmrByHpno(String hpno) {