La plupart des bases de données d'IP incluent des colonnes pour la « Plage d'adresses IP de début » et la « Plage d'adresses IP de fin ». Les valeurs de ces colonnes sont généralement des entiers à huit chiffres. Il est probable que vos données possèdent des adresses IP sous forme de chaînes de nombres à neuf chiffres séparés par des virgules, par exemple 1.23.456.789. Pour déterminer l'emplacement de l'adresse IP, vous devrez convertir l'adresse IP en un nombre entier et déterminer la plage IP où se trouve cette adresse.
Vous devez d'abord créer deux liaisons entre vos données d'adresses IP et la base de données d'adresses IP.(INT(
LEFT([IP Address],(FIND([IP Address], ".")))
))*16777216+
(INT(
LEFT(
MID([IP Address],
FIND([IP Address],".")+1),
FIND(MID([IP Address],FIND([IP Address],".")+1),".")-1)
))*65536+
(INT(
MID([IP Address],
FIND([IP Address], ".", FIND([IP Address], ".") +1)+1,
(FIND([IP Address], ".", FIND([IP Address], ".", FIND([IP Address],"." ) +1) +1)) - (FIND([IP Address], ".", FIND([IP Address], ".") +1))-1
)
))*256+
(INT(
RIGHT([IP Address],
LEN([IP Address]) -
FIND([IP Address], ".", FIND([IP Address], ".", FIND([IP Address],"." ) +1) +1)
)(INT(
LEFT([IP Address],(FIND([IP Address], ".")))
))*16777216+
(INT(
LEFT(
MID([IP Address],
FIND([IP Address],".")+1),
FIND(MID([IP Address],FIND([IP Address],".")+1),".")-1)
))*65536+
(INT(
MID([IP Address],
FIND([IP Address], ".", FIND([IP Address], ".") +1)+1,
(FIND([IP Address], ".", FIND([IP Address], ".", FIND([IP Address],"." ) +1) +1)) - (FIND([IP Address], ".", FIND([IP Address], ".") +1))-1
)
))*256+
(INT(
RIGHT([IP Address],
LEN([IP Address]) -
FIND([IP Address], ".", FIND([IP Address], ".", FIND([IP Address],"." ) +1) +1)
)
))001458025
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