Internet Tip # 6 - Cellular Phone Number Provider - find out if your friends # is free for you

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The nice thing about the following table of websites, is that they offer important information for free. Some of them will tell you if a friends cell number is in your cellular network and some of them will do a reverse phone look up.


Find out which carrier a cell phone number belongs to: It has correctly discovered the correct carrier for Sprint Nextel, AT&T, Verizon Wireless, and T-Mobile USA phone numbers. Find out if your friends number is on your same carrier so you know you can call them for free.



Stop robocalls now!



From Telephone Number Identification


This amazing service has so far determined the correct current wireless carrier and the correct original wireless carrier for many different cellular phone numbers.


CallerSmart helps you investigate mystery phone numbers, and avoid unwanted calls and texts. Unfortunately, they want to show an ad before they show you the persons name.


From 800notes

Are you getting bugged by 800 numbers or long distance numbers and you want to know which telemarketer keeps calling? Enter the number here.


Last updated on July 31, 2019
Created on November 8, 2005

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User Comments

There are 54 comments.

Displaying first 50 comments.

1. Posted By: MP - - April 10, 2007, 5:57 am

One more resource that helps to find out who owns a phone number and how they are using it.

2. Posted By: Caroline - - October 4, 2007, 4:04 pm
Reverse Cell Phone Detective Site to help you find the owner of a cell phone number.... good but expensive

3. Posted By: Sean - - October 26, 2007, 4:51 pm
I've been using Who Owns This Phone to find information about cell phone numbers... any other suggestions?

4. Posted By: Terry - - December 2, 2007, 2:46 am
I found a site that claimed to give free reverse cell phone lookups @ - any experience with them?

5. Posted By: David - - December 24, 2007, 8:45 pm
I like there is a free map of the location of the cell phone number.

6. Posted By: Conti - - February 5, 2008, 11:04 pm
The carrier site mentioned is the best but is no longer free. is the only free reverse lookup tool I know of.

7. Posted By: lee simpson - - March 7, 2008, 2:55 pm
Check out They have all the mystery ghost calls in a wiki format. Numberzoom It's a good list of unknown phone numbers.

8. Posted By: Anthony - - March 7, 2008, 5:11 pm
Another website like is

9. Posted By: Caller Complaints - - March 13, 2008, 2:54 pm
Hey All,

Our website is similar to and and provides a free "telemarketer lookup" for users.

10. Posted By: d0s4d1 - - April 6, 2008, 9:25 pm
None of these links or services are going to identify the carrier of a phone number. Number Portability means you can take your number with you to your new carrier, meaning that carrier can no longer be identified by the number prefix. Also there is no real database of cell phone numbers that is national or centralized, so it takes paying a private detective service to track down an owner of a cell phone.

11. Posted By: Kevin - - September 6, 2008, 6:08 am
There is also which allows you to lookup area codes, unlisted phone numbers -- also has news, telemarketer suggestions, and videos.

12. Posted By: Shawn - - September 6, 2008, 6:09 am
There is also which allows you to lookup area codes, unlisted phone numbers -- also has news, telemarketer suggestions, and videos.

13. Posted By: chris - - December 2, 2008, 3:52 pm
None of the above sites can follow a number that has been ported to a new carrier

14. Posted By: Other Chris - - January 18, 2009, 11:04 am
Yes, except for that Verizon one. And the AT&T one that's no longer offered

15. Posted By: Jeff - - January 19, 2009, 1:13 pm
The AT&T one is still offered but you have to login to your AT&T account.

16. Posted By: montana - - April 24, 2009, 3:11 pm
anybody who has a verizon account thats to high i will pay it for you call me at 619-209-1924 or email me at sincerly yours tony montana

17. Posted By: nir - - June 23, 2009, 1:13 pm
Here is a tool that helps you find the vendor by number, it also help you manage your contacts,and many other things, and sits on your desktop!!!

18. Posted By: Andy - - August 20, 2009, 5:11 pm
Overall good post. Cell phone reverse lookups usually take more time, there are also paid directories - some pros and cons are discussed in this post on reverse cell phone lookups.

19. Posted By: Timothy - - March 1, 2010, 4:13 pm
You can also do a reverse cell phone lookup at and look up a cell phone carrier and phone owner address location for free.

20. Posted By: Michael Princeton - - March 7, 2010, 10:29 am
Here is another ineteresting artivle on cell phone lookups

21. Posted By: Kikkt - - April 23, 2010, 12:39 pm
Great entry on cell phone look up procedure. I am wondering how good this info is. They also talk about it in this article and it is hard to figure it out.

22. Posted By: Lolla - - April 23, 2010, 12:42 pm
Most reverse cell phone look up sites basically provide no usefule info about the owner - either obsolete or no info wahtsoever.

23. Posted By: reade - - May 1, 2010, 9:19 am
has anyone made an android or iphone app that can do this? perhaps it can list the network providers in your contacts list

24. Posted By: Tommy - - May 21, 2010, 4:20 pm
Another good site for searching mobile numbers is

25. Posted By: Marc - - July 22, 2010, 8:21 pm
Data24-7 offers a paid service which looks-up the phone carriers, but it takes number portability into account. If a phone is ported from one carrier to another, the results of this service will be updated almost immediately. The cost is only $0.006 per query.
The link is:

26. Posted By: Aaron - - August 31, 2010, 9:28 am offers access to over 2.4 million cell phone numbers according to this press release.

27. Posted By: Neo Max - - September 16, 2010, 2:39 am
I always try reverse cell phone lookup service and it never lets me down, great.


28. Posted By: Jerry - - September 26, 2010, 7:08 am
See the website

29. Posted By: Bill Stevens - - September 26, 2010, 7:09 am
Have you seen this one:

30. Posted By: Guy - - October 22, 2010, 11:43 am
Verizon's mobile-to-mobile lookup still works, but ATT moved theirs inside their Customer site so you have to have an account

31. Posted By: Marc - - November 6, 2010, 6:10 pm
Data24-7 offers a carrier lookup service which is "number-portability-aware". This means if somebody changes their phone carrier, the Data24-7 service will immediately know about it and return the correct carrier. For USA numbers (and some international), they will also return the email-to-sms and email-to-mms gateway addresses so that you can send messages to the phones via email. The link is:

32. Posted By: jxxx - - November 10, 2010, 3:15 am
Well all the sites have been browsed but says number not found
adn also some of the sites are asking for payments for the first time users or they can ask us to put our email id and then they can send the details on our email id instead of displaying as a whole.

well as per me few of the Mobile number details must be available to check whether information provided is correct

how one can blindly make the payemnts and came to know afterwards details provided are also wrong

33. Posted By: Michael Kitghlinger - - November 11, 2010, 6:40 am
Looking for a reverse phone site? Lookup here to identify any unknown landline or cell phone number:

34. Posted By: John Calvin Lewis - - December 31, 2010, 6:05 am
Good post.
Is your love busy talking to someone all the time, reverse search to find out the owner of the phone number.

35. Posted By: michael - - January 27, 2011, 9:02 pm
Very interesting resource, I wonder where they get the datasets to determine the cellphone numbers

36. Posted By: sunshine - - February 7, 2011, 5:35 pm
very helpful. loved it.

37. Posted By: Pete - - April 15, 2011, 11:38 am
TIRS has great data. cheap. also has an API for developers that are interested like me :)

38. Posted By: thomas dionne - - April 27, 2011, 10:21 am
i was wondering if there was a way to take a phone number and see who carrier is in mass, or with an API

OR if there is a way to know at&t gives out the 904616xxxx numbers... I know people can switch carriers but even if i was 80% accurate that would be useful...

Also is there a way to tell if a number is a land line or cell phone? I want to know for 100's of numbers a day, if i had a list ahead of time, that would be cool, i could build a program. If there was an api that could use your number checker... that would be awesome... wondering if you know of anything like that?

39. Posted By: Bill - - July 11, 2011, 2:48 pm
Hey! Just a simple note of thanks and appreciation for your sharing. It's so easy to approach a murderous frenzy when trying to find even the most basic of things on the World Wide Mess.

40. Posted By: mathrew - - July 17, 2011, 8:58 am
Another useful one is it's used for reporting telemarketers and phone scammers, it's a consumer complaint board

41. Posted By: Rob - - February 29, 2012, 3:09 am
Some of the resources here are really good, a few of them no longer work or aren't so good any more. Another website I found that had some good information on finding cellular numbers was Their is an article on finding the owner of a cell phone's name: and also one on finding the cell phone number of a friend: The site doesn't have anything to sell so I found it very helpful.

42. Posted By: - - October 19, 2012, 9:10 pm
Look up the exact carrier as of today.

Name and Address available from :
Verizon Wireless | AT&T | Sprint | Nextel | US Cellular | T Mobile | TracFone | Metro PCS | Boost Mobile | Cricket

43. Posted By: Jagged Edge - - August 10, 2013, 12:50 pm
Great information, very helpful. Saves tons on sending email to friends' and clients' cellphones, instead of texting!

44. Posted By: thatgirl - - November 19, 2013, 1:26 pm

45. Posted By: maya - - June 29, 2015, 11:07 am
So i have been getting spam phone calls for the lask week and some of the websites mentioned here are no longer active. is the only one with that phone number is question

46. Posted By: customer - - June 24, 2016, 1:17 am
customer service numbers

47. Posted By: taylor swift - - November 9, 2016, 12:37 am

Thank you for another essential article.- taylor swift

48. Posted By: scamc allfighters - - December 29, 2016, 2:28 am
is it an important for find the number now a daysa there are many people calling the differnt number so find it it is necessary

49. Posted By: Phone Number Lookup - - January 3, 2017, 11:52 am
Several other phone number lookup websites:

50. Posted By: arby - - March 27, 2017, 8:33 pm
The Verizon website to check in-network numbers is gone. The link in the post is not longer good.