anchor.diff:  619,1561,25,607,sl,Sierra Leone,232,Mobitel
   525,1317,12,303,sg,Singapore,65,GRID Communications Pte Ltd
   525,1317,03,63,sg,Singapore,65,MobileOne Ltd
  +525,1317,07,127,sg,Singapore,65,Singtel
   525,1317,02,47,sg,Singapore,65,Singtel
   525,1317,01,31,sg,Singapore,65,Singtel
  -525,1317,07,127,sg,Singapore,65,Singtel
  +525,1317,05,95,sg,Singapore,65,Starhub
   525,1317,06,111,sg,Singapore,65,Starhub
  -525,1317,05,95,sg,Singapore,65,Starhub
   231,561,06,111,sk,Slovakia,421,O2
  +231,561,01,31,sk,Slovakia,421,Orange
   231,561,05,95,sk,Slovakia,421,Orange
  -231,561,01,31,sk,Slovakia,421,Orange
   231,561,15,351,sk,Slovakia,421,Orange
   231,561,02,47,sk,Slovakia,421,T-Mobile
   231,561,04,79,sk,Slovakia,421,T-Mobile
  
positive.code: 230,560,01,31,cz,Czech Rep.,420,T-Mobile / RadioMobil
  230,560,05,95,cz,Czech Rep.,420,Travel Telekommunikation s.r.o.
  230,560,04,79,cz,Czech Rep.,420,Ufone
  230,560,99,2463,cz,Czech Rep.,420,Vodafone
  230,560,03,63,cz,Czech Rep.,420,Vodafone
  238,568,05,95,dk,Denmark,45,ApS KBUS
  238,568,23,575,dk,Denmark,45,Banedanmark
  238,568,28,655,dk,Denmark,45,CoolTEL ApS
  
negative.code: 302,770,680,1664,ca,Canada,1,Sask Tel Mobility
  302,770,654,1620,ca,Canada,1,Sask Tel Mobility
  302,770,656,1622,ca,Canada,1,Tbay Mobility
  302,770,653,1619,ca,Canada,1,Telus Mobility
  302,770,220,544,ca,Canada,1,Telus Mobility
  302,770,500,1280,ca,Canada,1,Videotron
  302,770,490,1168,ca,Canada,1,WIND
  625,1573,01,31,cv,Cape Verde,238,CV Movel
  