Guide

How to remove landlines from a skip-traced list

You paid for the skip trace. Now you have five phone columns per owner and no idea which ones can take a text. Here's how to sort them in one upload: mobiles to your texting tool, landlines to your dialer, dead numbers out.

One owner's three phone numbers from a skip-traced list sorted into texting.csv, calling.csv and removed

Texting a landline wastes the send

Most landlines can't receive a text. The message goes out, nothing arrives, and you never find out which owners you missed.

Do it at scale and it costs you twice: once for the wasted sends, and again if carriers notice how many of your messages fail and start filtering the ones that would have landed.

But don't delete the landlines. An owner who ignores every text might still pick up the house phone. The goal is to send each number down the right channel: mobiles to texting, everything that rings to the dialer.

You can't tell by looking at the number

A mobile and a landline in the same town can share the area code and the next three digits. Nothing in the number gives it away.

Numbers also move. People take a home number to a mobile carrier, or a cell number to an internet phone app, and keep every digit. So a line-type column filled in when the data was compiled can be out of date. The reliable answer comes from looking up which carrier holds the number now, and what kind of line it is.

What one owner looks like, before and after

Here's one row from a skip trace, with made-up numbers. The check finds that Phone 1 is a landline, Phone 2 is a mobile and Phone 3 isn't a real number.

One owner's row in each file
FilePhone 1Phone 2Phone 3
Your upload(312) 555-0142(312) 555-0187(773) 555-0110
texting.csv—(312) 555-0187—
calling.csv(312) 555-0142(312) 555-0187—

The owner stays in both files. The texting file keeps only the mobile, the calling file keeps both numbers that ring, and the dead number is gone from each. Nothing to sort by hand.

Do it in four steps

  1. Step 1

    Export the list as a CSV

    Keep it exactly as your skip-trace provider gave it: one row per owner, every phone in its own column. If it's an Excel file, open it and use Save As, then CSV.

  2. Step 2

    Upload it and tick your phone columns

    We spot the phone columns and tick them for you, up to ten. Check we got them all.

    The column step of a list upload with Phone 1, Phone 2 and Phone 3 ticked
  3. Step 3

    Check the cost, then start

    You see the credit count before anything runs. Each different number is charged once, even if it shows up in three rows. Repeats, blanks and badly formatted numbers are free, and anything that comes back unknown is refunded when the list finishes.

    The cost step showing rows, phone numbers to check and credits needed before the list starts
  4. Step 4

    Download the file for each job

    When the list is done, every number has a verdict: textable, callable, invalid or unknown. The files below are ready to import.

    A finished skip-traced list with downloads for texting, for calling and for owners with no working number

Which file goes where

texting.csv
Into your texting tool. Only owners with a mobile, and only their mobile numbers.
calling.csv
Into your dialer. Every number that rings, plus the ones we couldn't confirm either way.
removed.csv
Owners with no working number. Trace them again, or let them go.
all.csv
Everything, with the line type, carrier and region next to each phone. For when you want to dig in.

Common questions

Will I pay twice if a number shows up in two columns?

No. You pay once for each different number in the file. Repeats, blank cells and badly formatted numbers are free.

What if an owner only has landlines?

They're left out of texting.csv and kept in calling.csv with the landlines in place. Call them instead.

What happens to numbers you can't confirm?

They come back unknown and cost nothing. They stay in calling.csv and are left out of texting.csv, since a text to them may be wasted.

Does this check Do Not Call lists or consent?

No. It tells you whether a number can be reached, not whether you're allowed to contact it. Keep checking consent and Do Not Call before you send.

Can you tell me who owns each number?

No. You get the line type, the carrier and the region. Nothing about the person behind the number.

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