http://trkcnfrm1.smi.usps.com/PTSInternetWeb/InterLabelInquiry.do?origTrackNum= http://trkcnfrm1\.smi\.usps\.com/PTSInternetWeb/InterLabelInquiry\.do\?origTrackNum=.* http://trkcnfrm1\.smi\.usps\.com/PTSInternetWeb/InterLabelInquiry\.do\?strOrigTrackNum=.*