Lansweeper uses an IPNumeric field to easily filter and sort IP addresses. The below sample lists all devices between 192.168.1.1 (192168001001) to 192.168.1.255 (192168001255).
Select Top 1000000 tblAssets.AssetID,
tblAssets.AssetName,
tblAssets.IPAddress
From tblAssets
Inner Join tblAssetCustom On tblAssetCustom.AssetID = tblAssets.AssetID
Where tblAssetCustom.State = 1 And tblAssets.IPNumeric >= 192168001001
And tblAssets.IPNumeric <= 192168001255
Order By tblAssets.IPNumeric