Append Missing Phone Numbers Using Name and Address

DOTS Phone Append 2

A real-time web service API that enables companies to append missing consumer and business phone numbers to contact data records.

Our proprietary database is updated daily with 800 million consumer, business and government phone number listings, resulting in industry leading match rates up to 75%. DOTS Phone Append 2 also validates and standardizes submitted street addresses. With this service, companies ensure that their customer contact records are complete and always up-to-date.



Sample Request URL

JSON output using path parameters: Barbara/93101/27 E Cota St/Service Objects/true/[YourKey]?format=json
XML output using query string parameters:[YourKey]
Four Ways to Use Your Subscription

Integrate any of our easy-to-program contact verification APIs directly into your systems for real-time cleansing, appending and fraud protection.


When you have a quick list that needs to be verified and cleansed, it's time for DataTumbler, our PC-based data cleansing application.


Implementing an automated FTP batch for your data quality needs is the perfect way to cleanse data from one of your systems on a scheduled time of day or month.


Our Quick Lookups are the perfect way to get the job done fast! Access-from-anywhere data validation tools will come in handy for quick contact lookups.

  • Phone Append Features
    • Match rate up to 75%
    • Multi-data source
    • Proprietary data-set with over 800 million consumer, business and government listings
    • Coverage for both US and Canada, including Puerto Rico and Guam
    • Returns indicator for residential and business address types
    • Sub-second response times
    • Real-time API or batch service available
    • Supports REST, SOAP, GET and POST requests over HTTP/S outputting in XML or JSON formats
    • Updated daily
    • Intelligent, predictive logic
    • Certainty score indicates phone contact availability
    • Returns matched name and validated address along with phone number
    • Identify business vs residential phone numbers when using Composite operation
  • Benefits of Appending Phone Numbers

    DOTS Phone Append 2 is a real-time phone number append API that fills in the blanks by comparing a contact's address with a huge database of current telecom data and then appending that record with missing information such as phone number and other contact details. Phone append ensures that your contact records are complete and accurate. Why use phone number append?

    Phone append appends numbers in real-time, a boon for call centers and customer service organizations. This in turn can save time and boost profits. Phone append also appends phone numbers to consumer and business leads, allowing sales and marketing to follow through over the phone. Phone append instantly provides organizations with current and multiple contact points with customers and leads alike.

Pricing plans start at $289/month
and include our exclusive Customer Success Program (with annual contracts) featuring:
  • 24/7 Critical Emergency Support
  • Programming consultation with Integration Engineer
  • Early access to product releases and version updates
Ready to get started?