Data Entry on a Spreadsheet

I have a list of business contacts. There are 36K contacts at 10.5K companies I need a data entry professional or team to look up 2 company ID numbers online for each unique company in a List Services account of ours and add those numbers to the spreadsheet for all 10.5K company entries. Duplicated companies at the same location will get the same numbers. The process would involve the following steps: 1. Look up the company in our List Services account 2. Identify the correct location from the spreadsheet for that company 3. Copy the company number from List Services Account 4. Paste it into the spreadsheet I need this on a quick turnaround. Please let me know if you can do this accurately and in what time frame.