GL2 postcode area關於「Taiwan postcode」標籤，搜尋引擎有相關的訊息討論：
The Post Office in Taipei Citywww.post.gov.tw › post › internet › U_english2Taiwan, Taipei, Tainan Area and Zip/Postal Code - Travel China Guidewww.travelchinaguide.com › essential › area_zip › taiwanThe Post Office in Hualien Countywww.post.gov.tw › post › internet › U_english