diff --git a/hosts/whitelist.txt b/hosts/whitelist.txt
index fcb544d..1b03b99 100755
--- a/hosts/whitelist.txt
+++ b/hosts/whitelist.txt
@@ -1,6 +1,8 @@
 ## This whitelist maintaince by @ookangzheng
 ## Attribution-NonCommercial 4.0 International (CC BY-NC-SA 4.0)
 
+ftp.tsukuba.wide.ad.jp
+
 # Nokia image asset 
 d3orhvfyxudxxq.cloudfront.net # CNAME images.ctfassets.net