is sbcglobal throttling Cuban traffic?

["C. A. Fillekes" <cfillekes () gmail com>]

Reports from around the country are that traceroutes through sbcglobal
(in Austin, Houston and NJ) are failing with timeout to
havanatimes.org -- yet when we go in through TOR or Comcast or using
overseas services, their routing is just fine.  What gives?