Question 1

How do I verify a phone number for free?

Accepted Answer

Enter any phone number above and PhoneCheckr instantly returns the carrier name, line type, and validity. Single lookups are free (up to 10 per hour). For bulk verification, upload a CSV or Excel file and validate your entire list at $0.01 per number. No subscription required.

Question 2

Can PhoneCheckr detect VOIP phone numbers?

Accepted Answer

Yes. PhoneCheckr detects VOIP numbers (internet-based phone numbers from providers like Google Voice, Twilio, and Vonage) and flags them separately from mobile and landline numbers. This lets you filter VOIP numbers before running SMS campaigns or importing contacts.

Question 3

How do I look up the carrier for a phone number?

Accepted Answer

PhoneCheckr queries a national phone database and returns the carrier name (e.g., Verizon, AT&T, T-Mobile) and line type for any US or Canadian number. Enter a single number above for an instant result, or upload a CSV to get carrier data for every number in bulk.

Question 4

What's the difference between mobile, landline, and VOIP numbers?

Accepted Answer

Mobile numbers are assigned to cell phones and can receive SMS messages. Landline numbers are tied to a fixed location and cannot receive texts. VOIP (Voice over IP) numbers are internet-based and may or may not support SMS depending on the provider. Knowing the line type helps you choose the right outreach channel.

Question 5

How can I find if the phone numbers are mobile or landline?

Accepted Answer

PhoneCheckr detects whether a phone number is mobile, landline, or VOIP by checking a national carrier database. It returns carrier name, line type, and validity for every number, so you can route outreach to the right channel.

Question 6

Can I upload a CSV or Excel file to check phone numbers in bulk?

Accepted Answer

Yes. Upload a CSV or Excel file, map the column containing your numbers, and PhoneCheckr validates and enriches every entry at $0.01 per number. Download the results as a report showing carrier name, line type (mobile, landline, or VOIP), and validity for each number.

Question 7

Can I use PhoneCheckr to clean my phone list before sending text messages?

Accepted Answer

Yes. Removing landlines, VOIP numbers, and invalid entries before an SMS campaign reduces wasted spend and improves deliverability. PhoneCheckr identifies which numbers are mobile and reachable by SMS so you can clean your list before sending.

Question 8

Is phone number verification free?

Accepted Answer

Individual lookups and basic validation (including country code, number format, and line type) are free. Full carrier reports for bulk CSV uploads are available at $0.01 per lookup, with no subscription required.

Question 9

How accurate is PhoneCheckr's phone number lookup?

Accepted Answer

PhoneCheckr queries a national phone database to determine carrier and line type. Accuracy is high for active numbers in the US and Canada. Numbers recently ported between carriers may have a brief lag before the database reflects the change.

Question 10

Which payment methods do you accept?

Accepted Answer

We use Stripe for secure payment processing and accept VISA, Mastercard, American Express, and Discover debit and credit cards.

Question 11

Is PhoneCheckr a free phone number lookup tool?

Accepted Answer

PhoneCheckr offers free single lookups (up to 10 per hour). Enter any US or Canadian number above and instantly see the carrier name, line type (mobile, landline, or VOIP), and whether the number is valid. No account required. Bulk CSV lookups are $0.01 per number with no subscription.

Question 12

What is bulk phone number validation and what does it include?

Accepted Answer

Bulk phone number validation is the process of checking a large list of phone numbers at once, verifying each one for format, validity, country code, carrier name, and line type. Upload a CSV or Excel file to PhoneCheckr, select the column containing your numbers, and download a cleaned, enriched report. Bulk lookups are $0.01 per number with no subscription required.

Question 13

How does phone number verification improve SMS deliverability?

Accepted Answer

SMS deliverability improves when you only send to verified mobile numbers. Phone number verification identifies landline and VOIP numbers that cannot receive text messages so you can remove them before your campaign. Filtering to mobile-only numbers reduces bounce rates, avoids carrier filtering, and lowers your cost per delivered message. Phone number verification is a standard step before any SMS send.

Phone Number	National Format	Valid	Country	Type	Carrier
+13145606905	(314) 560-6905	Yes	US	Mobile	AT&T Wireless
+15618004042	(561) 800-4042	Yes	US	VOIP	Google (Grand Central)
+12198105077	(219) 810-5077	Yes	US	Mobile	Virgin Mobile
+19876540000		No	US
+16158887534	(615) 888-7534	Yes	US	Mobile	Verizon Wireless
+15619989999	(561) 998-9999	Yes	US	Landline	DeltaCom, Inc
+15550001234		No	US
+15614010487	(561) 401-0487	Yes	US	VOIP	Twilio
+18103347344	(810) 334-7344	Yes	US	Mobile	Sprint Spectrum, L.P.
+16145727071	(614) 572-7071	Yes	US	Mobile	Verizon Wireless

Free Phone Number Checker

You'll get a report like this

Upload your file

Map your number column

Get your results

Who uses PhoneCheckr

Sales / SDR

SMS Marketing

Lead Gen / Marketing Ops

RevOps / Data

Fraud / Trust & Safety

Small Business / Individual

Bad phone data is expensive. Here's what it costs.

Landlines and VOIP can't receive your texts

Every bad number wastes a rep's call slot

CRM contact data degrades every quarter

Ready to clean your phone list?

What you can do with PhoneCheckr

Clean your SMS list before sending

Validate a phone number in seconds

Look up the carrier for any number

Check if a number is mobile, landline, or VOIP

Filter VOIP numbers from your contact list

Validate phone numbers in bulk via CSV

Frequently asked questions

phone_number
13145606905
+1-561-800-4042
(219) 810-5077
9876540000
6158887534
5619989999
5550001234
+15614010487
8103347344
(614) 572-7071