diff --git a/object/cert_whois.go b/object/cert_whois.go
index 7489c17..604648d 100644
--- a/object/cert_whois.go
+++ b/object/cert_whois.go
@@ -18,7 +18,6 @@ import (
 	"strings"
 	"time"
 
-	"github.com/casbin/caswaf/proxy"
 	"github.com/likexian/whois"
 	whoisparser "github.com/likexian/whois-parser"
 )
@@ -44,15 +43,16 @@ func getDomainExpireTime(domainName string) (string, error) {
 		server = "whois.nic.run"
 	} else {
 		server = "grs-whois.hichina.com" // com, net, cc, tv
+		//return "", fmt.Errorf("unsupported suffix for domain: %s", domainName)
 	}
 
 	client := whois.NewClient()
-	if server != "whois.cnnic.cn" && server != "grs-whois.hichina.com" {
-		dialer := proxy.GetProxyDialer()
-		if dialer != nil {
-			client.SetDialer(dialer)
-		}
-	}
+	//if server != "whois.cnnic.cn" && server != "grs-whois.hichina.com" {
+	//	dialer := proxy.GetProxyDialer()
+	//	if dialer != nil {
+	//		client.SetDialer(dialer)
+	//	}
+	//}
 
 	data, err := client.Whois(domainName, server)
 	if err != nil {