Phone and Fax Number Appending

Win More Accounts Faster with the data intelligence

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Business phone appending

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Consumer phone appending

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Verifying of existing business & consumer phones

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New mover phone appending


Spectra Leads can help you with your call center and telemarketing efforts through phone number append and verification services. Phone number appending can turn an incomplete contact file into a valuable leads list. You can append phone numbers to your existing lists with our premium phone appending service.

This service finds the most accurate phone information available and presents your updated file for download in just 1-2 days. Phone number appending services provide you with a fast and easy way to add telephone numbers to your customer and prospect files helping you to more effectively target your customers and new prospects.

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  • Over 200 million telco-sourced consumer and business directory assistance listings with daily updates.
  • Two sources of more than 180 million compiled consumer listings, and 15 million compiled business listings from white and yellow page directories nationwide.
  • Plus compiled telephone directory listings for Canada
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Consumer Phone Number Append Percentage

All lists are matched against the National Do-Not-Call registry. However, if your organization is exempt from these laws you must specify "Exempt" at the time of order. The average percentage append rate for exempt customers is 25% to 70%. The average percentage of non-exempt customers is 7% to 18%.

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Business Phone Number Append Percentage

The business phone number append percentage varies depending on the accuracy of the names in your list. Your record must match our database record exactly in order to append a phone number, otherwise no match will be given. The average percentage appended is 35% to 65%.