Reliable Telephone Verification With Our Reverse Phone Lookup Service

DOTS GeoPhone Plus 2

DOTS GeoPhone Plus 2SM is a real-time reverse telephone lookup service that provides phone number verification for landlines, wireless numbers, and VoIP.

Over 400 million US and Canadian records, including 170 million wireless numbers, make this the most accurate, up-to-date telephone number validation service available. The phone number reverse lookup API includes latitude-longitude data for registered subscribers and date-driven portability information.

Four Ways to Use Your Subscription

Integrate our easy-to-program reverse phone lookup API directly into your systems for real-time telephone verification, cleansing, and appending.


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


Implementing an automated FTP batch for phone validation is the perfect way to lookup telephone data from one of your systems on a scheduled time of day or month.


Quick Lookups are the perfect choice for fast telephone number verification! Access-from-anywhere telephone validation tools allow for quick reverse phone lookups.

  • Features of Reverse Phone Lookup API
    • Reverse-lookup of wireless, landline, VoIP and toll-free telephone numbers for residential, business, and government telephone listings
    • Database includes over 400 million individual telephone records, with 170 million wireless numbers
    • Appends rooftop latitude and longitude information at address-level
    • Utilizes cascading logic to resolve caller identification data
    • Identifies phone type (business or residential)
    • Determines line type (landline, wireless or VoIP)
    • Quality score returned with every transaction
    • Accesses Local Number Portability (LNP) data and returns date of porting
    • 8 digit SIC code and description provided for finer detail into business classification
    • Data is compiled from over 2,300 US, Canadian, and Puerto Rican telephone carriers
    • Validates residential contact or business name and associated address for wireless numbers and landlines
    • Returns phone number provider information (including carrier, city, state, latitude and longitude)
    • Response time approximately 0.7 seconds
  • Benefits of GeoPhone Plus Reverse Phone Lookup

    DOTS GeoPhone Plus 2 is a phone number verification service that does more than validate the 10 digits of a phone number - our phone validation software provides the contact or business name and address associated with that phone number, provides telecom carrier information, phone type and line type. It also includes new telephone verification features such as: date ported, utilization of Caller ID information, SIC codes and descriptions, and date first seen.

    This reverse phone lookup software is easy to implement and use, and it delivers several important benefits.

    For example, the API:
    • Enhances customer records with valid wireless phone numbers
    • Verifies accuracy of phone number in coordination with other data points
    • Connects alternative phone numbers with existing contact records

    Why use a phone validation API? By using our reverse phone lookup software, you can require less information from your contacts at the point of contact. For example, busy business executives may hesitate to download a white paper or fill out a survey if you require them to provide too much information. With reverse phone number lookup, you can instantly and accurately fill in the blanks based on the contact's phone number.

    Since the reverse phone lookup API returns additional information such as SIC code and date ported, you can also glean some useful insights about the contact. For example, is the caller calling from a residence or a business? How long has the phone number been assigned to that caller? You could also use the address information provided to plot the caller's address on a map or look at satellite images of the property via Google Earth or a similar resource.

    Our Geophone Plus service also can correct and append phone numbers, helping to ensure that your marketing list is as accurate as possible. For example, if a contact transposes numbers within the phone number, the phone validation API can detect and correct the error by comparing the data to our extensive database of contact records. You can also run phone validation software on demand to ensure that your contact list contains the most current phone numbers -- as well as alternate phone numbers -- for your contacts. ... Read Less

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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
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