DuckCorp Dico

Found one definition

1.                 From English - German Ding/FreeDict dictionary ver. 1.9-fd1:
                   
   
   
                   
                     
   carrier-grade NAT /kˈaɹiə ɡɹˈeɪd ˌɛnˌeɪtˈiː/ (CGN /sˌiːdʒˌiːˈɛn/)
   Netzwerkadressübersetzung auf Betreiberebene
      Synonym: large-scale NAT
    see: network address translation