anchor.diff:  637,1591,10,271,so,Somalia,252,Nationlink
   637,1591,60,1551,so,Somalia,252,Nationlink
   637,1591,04,79,so,Somalia,252,Somafone
  +637,1591,82,2095,so,Somalia,252,Somtel
   637,1591,71,1823,so,Somalia,252,Somtel
  -637,1591,82,2095,so,Somalia,252,Somtel
   637,1591,01,31,so,Somalia,252,Telesom
   655,1621,02,47,za,South Africa,27,8.ta
   655,1621,21,543,za,South Africa,27,Cape Town Metropolitan
  
positive.code: 639,1593,03,63,ke,Kenya,254,Airtel/Zain/Celtel Ltd.
  545,1349,09,159,ki,Kiribati,686,Kiribati Frigate
  467,1127,193,403,kp,Korea N. Dem. People's Rep.,850,Sun Net
  450,1104,04,79,kr,Korea S Republic of,82,KT Freetel Co. Ltd.
  450,1104,08,143,kr,Korea S Republic of,82,KT Freetel Co. Ltd.
  450,1104,02,47,kr,Korea S Republic of,82,KT Freetel Co. Ltd.
  450,1104,06,111,kr,Korea S Republic of,82,LG Telecom
  450,1104,03,63,kr,Korea S Republic of,82,SK Telecom
  450,1104,05,95,kr,Korea S Republic of,82,SK Telecom Co. Ltd
  
negative.code: 608,1544,01,31,sn,Senegal,221,Orange/Sonatel
  608,1544,02,47,sn,Senegal,221,TIGO/Sentel GSM
  220,544,03,63,rs,Serbia,381,MTS/Telekom Srbija
  220,544,01,31,rs,Serbia,381,Telenor/Mobtel
  220,544,02,47,rs,Serbia,381,Telenor/Mobtel
  220,544,05,95,rs,Serbia,381,VIP Mobile
  633,1587,10,271,sc,Seychelles,248,Airtel
  633,1587,01,31,sc,Seychelles,248,C&W
  