Separate IP Address Octets in Excel

If you find yourself with a spreadsheet containing hundreds of servers, and there’s an IP Address Column, you may want to create 4 additional columns, each containing each of the four octets of the IP Address.

This may be useful for grouping large numbers of hosts in a spreadsheet by subnet.

And this may be useful in grouping together servers in legacy infrastructure by application where that information doesn’t exist, since deployments of solutions across multiple servers are often grouped together in a range of IP addresses allocated to the projects by the Network admin.

These formulae are used to separate out each of the four octets.

A2:=LEFT(A1,FIND(".",A1)-1)
A3:=MID(A1,FIND(".",A1)+1,FIND(".",A1,FIND(".",A1)+1)-FIND(".",A1)-1)
A4:=MID(A1,FIND(".",A1,FIND(".",A1)+1)+1,FIND(".",A1,FIND(".",A1,FIND(".",A1)+1)+1)-(FIND(".",A1,FIND(".",A1)+1)+1))
A5:=MID(A1,FIND(".",A1,FIND(".",A1,FIND(".",A1)+1)+1)+1,LEN(A1)-FIND(".",A1,FIND(".",A1,FIND(".",A1)+1)+1))

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