How to tracking number check sites

USPS

https://www.usps.com/ 

enter the number left up side tracking area

DHL

http://www.dhl.com

enter the number right side of "Track Your Shipment"

 

China Post (airmail, normal parcel) No EMS

http://track-chinapost.com/  no offical site

http://yjcx.11185.cn/ by china post site

 China Post tracking may check in your country post office 

 

AT once Method for

http://www.17track.net/index_en.shtml 

mobile site http://www.17track.net/m/en/

android App.  https://play.google.com/store/apps/details?id=yqtrack.app 

 

singpost

http://www.singpost.com.sg/