01
Valid or invalid detection
Spot numbers that look invalid before you spend sending volume on them.
Phone Intelligence
Phone Number Lookup: Check Line Type, Carrier and Validity Before You Send
Find out if a US number is valid, mobile, landline or VoIP, and which carrier it uses. Clean your list inside Reach Bullet so every message goes to a number that can receive it.
(212) 555-0147
Landline
Number Lookup
Phone Intelligence
+1 (305) 555-0184
Lookup
M
Michael Carter
Contact in your list
Status
✓ Valid
Line type
Mobile
Carrier
T-Mobile
Country
United States
✓ Ready for your campaign
(646) 555-0129
VoIP
What Is a Phone Number Lookup?
A phone number lookup checks a number and tells you what it is before you send to it. Reach Bullet returns validity, line type, carrier and country in one step.
02
Line type identification
Tell mobile, landline and VoIP numbers apart.
03
Carrier detection
See the carrier associated with each number.
Example Phone Lookup Result
Every lookup returns the same fields, so your team can act on it fast. Keep, fix or remove a number before it enters a campaign.
Field
Example
Number
+1 (305) 555-0184
Status
✓ Valid
Line type
Mobile
Carrier
T-Mobile
Country
United States
Why Check Numbers Before You Send an SMS Campaign?
Every message sent to a bad number is wasted volume. Lookup helps you send only to numbers that can receive texts.
Cut wasted sends
Remove invalid numbers first.
Handle landlines and VoIP differently
Most landlines cannot receive standard texts, so your workflow can react to line type.
Keep your lists clean
Better data means cleaner reporting and fewer surprises.
How to Run a Phone Lookup in Reach Bullet
Run lookups on a single number or as part of your list prep. No separate tool and no extra export.
Enter or import numbers
Add a number or bring in a list.
Run the lookup
Get validity, line type, carrier and country.
Send to the clean list
Launch your campaign with confidence.
Phone Lookup API for Developers
Run lookups from inside your own systems with the Phone Intelligence API. Validate numbers at signup, in forms or before any send.
Explore the SMS API →Your systems
SignupAt signup
FormsIn forms
Before a sendBefore any send
Phone Lookup
Phone Intelligence
Lookup result
StatusValid
Line typeMobile
CarrierT-Mobile
Phone Lookup Use Cases
Anywhere a phone number enters your business, a lookup can check it. Here are the most common places US teams use it.
01
Lead list cleanup
Check purchased or imported lists before the first send.
02
Web form and signup validation
Catch typos and bad numbers at the door through the API.
03
Re-engagement lists
Re-check old contacts before you text them again.
FAQs
Everything you need to know about phone lookup.
What is a phone number lookup?
It is a check that tells you whether a phone number appears valid and gives details like line type, carrier and country. In Reach Bullet you can run it before a number enters a campaign.
How can I tell if a number is mobile, landline or VoIP?
Run it through Reach Bullet’s lookup. The result shows the line type, so you can decide how to handle each number.
Can I check the carrier of a US phone number?
Yes. The lookup shows the carrier associated with the number, along with its validity and country.
Does a valid result mean the person will reply or has opted in?
No. Valid means the number appears to be a real, correctly formatted number. You still need consent before you text anyone. See our Messaging Compliance page.
Can I text a landline?
Most landlines cannot receive standard text messages. That is why checking line type first helps you avoid wasted sends.
Can I run lookups through an API?
Yes. The Phone Intelligence API lets you run number lookups from your own application or data workflow.
Know the Number Before You Use It
Validate, classify and clean your numbers in the same platform you send from. Start sending or see plans and pricing.