The Data Group


updated phone numbers available

Don't Leave Sales on the Table Because of Outdated Phone Numbers

It’s all about maintaining updated customer info and being able to reach customers and leads via phone and text. When you do this successfully, you increase potential sales opportunities and can provide an optimal customer experience 

Tapping into The Data Group’s up-to-date database of over 500 million accurate phone numbers allows you to do just that. Our consumer phone append service helps you easily stay in contact with customers throughout the year as phone numbers change and new numbers become available.

Phone Append Services You Can Trust

With The Data Group’s real-time phone lookups, you’ll receive corresponding quality data for each number that calls you. Inversely, our landlines and cell phone append services provide accurate information about particular numbers before you make the call, allowing you to reach customers on more devices while staying TCPA compliant in the process.

Whether you’re looking to reach more customers, reconnect with those you have lost contact, receive extensive returns on your marketing spend, boost your customer satisfaction, or improve your debt collection resources, you cannot afford to do without updated phone numbers.

Click the button below to get a free phone number match report and measure the quality of your data.

Increased Data Accuracy

Accurate data is the most powerful catalyst for understanding your customers — and expert phone appending is instrumental to this quest. 

Inaccurate data is as good as no data at all.

Phone Append Process

Our premium phone append service checks your records against our massive database to ensure the highest match rate between name and number. Our goal is to ensure every contact customer entry is relevant and precise. 

The Data Group paints an accurate results of each caller by accessing their full name, finding their postal address, and teaching you about their specific demographics—and all in real-time.

Phone Append Services

Benefits of Phone Append Services

What does phone appending do for you? 

The benefits are specific and measurable:

Reaching new and lost customers

Connect with a larger audience and re-establish contact with customers who’ve changed their phone number.

Identifying a larger percentage of inbound callers

Get more information to match with incoming calls and improve your ability to identify who’s calling.

More customer success

Improve your ability to reach and engage with customers with their preferred method of communication, leading to increased customer satisfaction and loyalty.

Increased customer satisfaction through personalized interactions

The better you know your customers, the better you can serve them.

Shorter wait times

More information leads to faster call routing and quicker turnarounds.

More referrals

Broaden your reach with minimal hassle.

Maximized marketing ROI

No wasted spend chasing ghost customers.

Minimized waste of time and money

No more phoning the wrong number. Get through to the consumer you want.

Smart assistance with debt collection

Get closer to finding your debtors and boosting your bottom line — all while still staying TPCA compliant.

Our technology allows you to maximize the power of a single call.

Accurate and Complete Phone Data Verification

Outbound calling campaigns can send even the most zen of marketers into a tizzy. The number one reason for all the stress? Inaccurate and incomplete information. 

Here at The Data Group, we want to stop the madness. 

In our quest to keep you from wasting energy on inaccurate information while exploding your earning potential, we have designed a phone appending service that does the heavy lifting on your behalf.

We can compare each phone number against our immense, nationwide directory to check if the phone number matches the person. If it doesn’t, we will simply give you the correct information.

With an extensive database of public, private, landline VoIP, and wireless phone numbers, we can give you a comprehensive insight into who is on the other end of the line. 

Correct contact data for each customer or lead, right at your fingertips.

Our real-time batch or API service will also help you access other data:

Caller Names

We determine whether the phone number you have for an individual is correct.

Caller Mailing Addresses

Retrieve detailed address data from our database, including street address, zip code, city, and state.

Caller Demographics

By better knowing each customer and prospect, you can discover how to serve your base, as well as grow it.

Phone append services allow you to leverage the full possibility of every call.

Protect Your Business By Maintaining TCPA Compliance

The Telephone Consumer Protection Act (TCPA) is a US federal statute intended to protect individual US citizens from having their privacy violated by telemarketers, pre-recorded messages, and auto-dialers. 

Companies need to stay within these regulations to avoid costly fines that can start at $1,500 or higher.

The Data Group Can Help

How do you continue with outbound marketing campaigns while still playing within the bounds of the TCPA?

That’s where we come in. Our nationwide file—updated daily to be one of the largest and most accurate in the world.

We can help you verify:

  • Type of phone you are calling, whether it is a landline or cell phone.
  • Whether the owner of the line is the same person who gave consent to be contacted
  • If a phone has been ported from landline to wireless


Armed with this information, remaining TCPA compliant while still conducting a successful campaign is completely achievable.


Telephone Consumer Protection Act

Phone Append Services

Identify Disconnected Phone Numbers to Save You Time and Money

Our phone append service will not only help you achieve an accurate, detailed directory through specially designed technology and stay in compliance with current privacy laws. It can also shave time off any telemarketer’s day thanks to our phone disconnect processing.

One of the key features of phone disconnect processing is the ability to check numbers against our directory to see whether they are still in use. In an instant, you’ll be able to see if a number has been disconnected and make a decision to remove them from your database, saving you hours of wasted time and energy.

The Data Group: Your Clear Choice for Phone Appending Services

Think of how much more you could achieve if you no longer had to concern yourself with whether your database contained accurate, reliable phone number information.

Here at The Data Group, our mission is to use our phone appending technology to help you capitalize on your time and money by providing data that is:

– Accurate

– Secure

– Compliant

– Customizable

– Scalable

Come see what all the fuss is about. Start your free trial today!


Phone append services can find and supply accurate data and details about your client by adding phone numbers to an existing file. This helps to provide a complete picture of who your customers are.

With phone append services for your business, you can save time and money, increase your marketing ROI, and improve your overall customer satisfaction.

Phone append services can provide the caller’s name, postal address, and demographics. You can even learn whether the caller is using a cell phone or landline. In addition, verified email addresses and additional digital device ID’s can be appended allowing your company to create an omni-channel marketing experience.

While our competitors boast a match rate of only 20%, the Data Group enjoys a 35-50% match rate.

While pricing may vary, most services charge scalable rates based on the number of phone numbers appended, often charging a specific rate per thousand. At The Data Group, we offer a best price guarantee and will beat any competitor’s price.

Yes, our phone append service can update both a customers landline and cell phone number.

The better you know your customers, the better you can tailor your marketing to meet their wants and needs. This reduces your workload while still increasing your ROI of both inbound and outbound call and text campaigns.