The best replacement for lookup is vlookup.

The best alternatives to lookup are rated as following:
★★★★★  vlookup
★★★★  lookup
★★★  merge join
★★  master detail salesforce
★★  master detail
★  dictionary c#
★  hlookup
★  joiner which is better performance wise
★  joiner
★  joiner informatica
★  hookup
★  look up
★  index match
★  reverse ip lookup
★  join datastage
★  vlookup in excel
  match excel
  h lookup
  forward lookup
  vlookup excel
  merge join ssis
  dictionary .net
  look-up

Your alternative for lookup is not listed? Suggest!
Speaking about lookup, one probably shouldn't forget about phone number.

Other search terms related to lookup and their ratings are:
★★★★★ phone number
★★ area code
★★ google cell phone number
You have in mind a companion for lookup and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of lookup in all years. Click on graph for more.
lookup
vlookup
lookup