КодСтранаРегионГородОператорДобавлено
+1 281 СШАTX Texas: Houston Metro (split 713; overlay 832)2013-08-22
+1 281 СШАHouston, TX2013-10-18
+1 281 848СШАHarrisHouston, TXTeleport Communications Group - Houston, Landline2013-10-18