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Tracking numbers are numbers given to packages when they are shipped. Tracking numbers are useful for knowing the location of time sensitive deliveries. In the United States, some of the companies and organizations that use tracking numbers are UPS,〔(【引用サイトリンク】url=http://www.ups.com/tracking/tracking.html )〕 FedEx,〔(【引用サイトリンク】url=http://www.fedex.com/Tracking )〕 and the United States Postal Service. ==Formats== FedEx Ground and Express tracking numbers can be between 12 and 14 digits. Prior to January 2013, Ground tracking numbers were up to 15 digits and Express numbers were up to 12 digits.〔http://fedex.p.delivery.net/m/p/fdx/bcc/home.asp〕 A UPS tracking number, for domestic packages within the United States, will usually start with "1Z" followed by a 6 character shipper number (numbers and letters), a 2 digit service level indicator (e.g., 03 for GROUND, SEE UPS SERVICE CODES below), and finally 8 digits identifying the package, for a total of 18 characters. DHL Express supports the carrier-independent ISO standard 15459-1 for the identification of single packages. Such identifiers consist of upper-case characters and numerals, and they can be up to 35 digits long. Companies that already use this standard do not require an additional identifier to track their pieces when shipping with DHL Express.〔http://de.slideshare.net/martintreder16/license-plate-the-iso-standard-for-transport-package-identifiers〕 In addition, DHL Express uses numeric identifiers of exactly ten digits to track transport orders (i.e. an order to transport a shipment consisting of one or more pieces from A to B). Customers can use both codes for tracking purposes. Most Postal Services use the international S10 (UPU standard), including the United States Postal Service〔USPS (date unknown). Track & Confirm label ID numbers. United States Postal Service. Retrieved from http://www.uspstrack.org/2015/08/usps-tracking-number-format.html〕 and most European Postal Services. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Tracking number」の詳細全文を読む スポンサード リンク
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