Fill in the Blanks
with Phone Append

Reliably add phone numbers to your customer, donor and prospect lists. Processing files is incredibly easy; simply email or upload your file and we will process, match and append phone numbers in as little as a few minutes. Get started immediately.

“It is very simple to process files, they’re back within
minutes. I always get what I order.”

Lisa Mann
Legal Document Services

Emily Robertson
Missing Phone #

The Most Reliable Source of Phone Numbers Available

Accurate Append maintains the most definitive, authoritative source of telephone numbers available in the phone append industry. Our phone databases are comprised of over 600 million landline and mobile phone numbers; helping you stay connected to your customers, prospects, voters, donors, and more.

RightParty Connect Algorithm

Accurate Append's proprietary RightParty Connect algorithm uses multi-point identify verification to ensure that you don't just get a phone number for any "John Smith" - you get the phone number for the "John Smith" in your list.

Amazing Support From Our Experts

All Accurate Append products are backed by our experienced team of experts who are passionate about helping our customers get the very most out of our products.

Notable Partners


Does Accurate Append do reverse phone appending?

Yes! We will take your existing phone number and append the consumer or business name and postal address.

Can Accurate Append append business records?

We can work with any type of record you have be it consumer, business, government or entity.

My files contain a great deal of data. Do I have to remove any extra information before Accurate Append processes my file?

Absolutely not! We understand working with large data sets is complicated enough as it is, so our software safely appends phone numbers to the end of your record. Keeping all of the other data in the file intact.

What input fields are needed to match for phone appending?

In order to append the best phone numbers available we ask that you provide the following fields: full name or business name, street address, city, state, and zip.

How quickly will I receive my results after my file is processed?

You can receive results in a matter of minutes after submitting your file for processing.

Does Accurate Append offer a phone append API?

Yes, we offer multiple phone append API’s. These API’s support standard phone appending in addition to reverse phone appending.

Chat With Our Experts

Chat with our experts and find the best data solution for your company

We are available by phone at: 888-496-4258

  • This field is for validation purposes and should be left unchanged.