Thank you. That's exactly exactly what it was. Now one hopefully small problem. I've written a lot of reports identifying our computers by school. One of the reports has an unusually large number of computers as it is picking up out of range devices. This is the report:
SELECT
dbo.tblComputers.Computername,
dbo.tblComputers.Domain,
dbo.tblComputersystem.Lastchanged,
dbo.tblComputers.Username,
dbo.tblComputers.LastknownIP,
dbo.tblComputersystem.Manufacturer,
dbo.tblComputersystem.Model,
dbo.tblComputersystem.TotalPhysicalMemory
FROM
dbo.tblComputersystem
INNER JOIN dbo.tblComputers ON (dbo.tblComputersystem.Computername = dbo.tblComputers.Computername)
WHERE
dbo.tblComputersystem.Domainrole < '2' AND
dbo.tblComputers.LastknownIP BETWEEN '10.144.16.1' AND '10.144.19.254'
A jpg of the output is attached. As you can see I'm getting addresses that are 10.144.17.xxx through 10.144.177.xxx