UPS: http://wwwapps.ups.com/WebTracking/track?track=yes&trackNums=%1
UPS: http://wwwapps.ups.com/WebTracking/track?HTMLVersion=5.0&loc=en_US&Requester=UPSHome&trackNums=%1&track.x=Track

FedEx: http://www.fedex.com/Tracking?tracknumbers=%1
FedEx: http://www.fedex.com/Tracking?action=track&tracknumbers=%1
FedEx: http://fedex.com/Tracking?action=track&tracknumber_list=%1&cntry_code=us
FedEx: http://www.fedex.com/Tracking?ascend_header=1&clienttype=dotcom&cntry_code=us&language=english&tracknumbers=%1

USPS: https://tools.usps.com/go/TrackConfirmAction?qtc_tLabels1=%1
USPS: https://tools.usps.com/go/TrackConfirmAction_input?qtc_tLabels1=%1
USPS: http://trkcnfrm1.smi.usps.com/PTSInternetWeb/InterLabelInquiry.do?origTrackNum=%1

OnTrac: http://www.ontrac.com/trackingdetail.asp?tracking=%1
OnTrac: http://www.ontrac.com/tracking.asp?trackingres=submit&tracking_number=%1&trackBtn.x=18&trackBtn.y=12&trackBtn=trackingres_submit

LaserShip: http://lasership.com/track/%1
LaserShip: (As XML) http://lasership.com/track/%1/xml
LaserShip: http://www.lasership.com/track.php?track_number_input=%1

DHL US: http://www.dhl-usa.com/content/us/en/express/tracking.shtml?brand=DHL&AWB=%1
HDL Canada: http://international.dhl.ca/content/ca/en/express/tracking.shtml?brand=DHL&AWB=%1

DHL Global Mail: http://webtrack.dhlglobalmail.com/?trackingnumber=%1

TNT: http://www.tnt.com/webtracker/tracking.do?navigation=1&searchType=CON&respLang=en&genericSiteIdent=.&cons=%1