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In The Media

Cellphone Number Underwriting

by Larry Chiang on June 22, 2025

A free carrier lookup service allows you to identify the telecommunications provider (carrier) associated with a phone number, often including details like whether it’s a mobile, landline, or VoIP number, and sometimes the geographical location or line type. Here are some reliable free carrier lookup tools based on available information:
   – **Features**: Validates phone numbers, identifies carriers, and checks if a number can receive messages without notifying the owner. It uses Google’s public database for basic checks but recommends its Number Lookup API for more accurate data.  
   – **How to Use**: Enter the phone number and select the country, then click “Check Number.” Results display in seconds.  
   – **Limitations**: Basic checks may have inaccuracies; API access requires an account for bulk or automated lookups.[](messente.com/carrier-lookup)
2. **Textmagic** (freetools.textmagic.com)  
   – **Features**: Extracts carrier name, phone type (mobile/landline), time zone, and country codes. Useful for separating valid from invalid numbers before SMS campaigns.  
   – **How to Use**: Input the phone number, select the country, and click “Check Carrier.” No notification is sent to the number’s owner.  
   – **Limitations**: Limited to individual lookups; bulk features may require payment.[](freetools.textmagic.com/carrier-lookup)
3. **Textr** (textrapp.com)  
   – **Features**: Provides carrier details, city, state, and phone type for U.S. and Canadian numbers. Helps improve database accuracy for SMS marketing.  
   – **How to Use**: Enter the phone number, select USA or Canada, and submit.  
   – **Limitations**: Focused on North America; additional features require a paid Textr Team account.[](textrapp.com/free-tools/free-carrier-look-up-tool)
4. **ClearoutPhone** (clearoutphone.io)  
   – **Features**: Offers carrier details, line type, time zone, and number validity for 240+ countries. Useful for fraud prevention and database cleaning.  
   – **How to Use**: Enter the phone number and click “Check Carrier.” Free users get 100 lookups after signing up.  
   – **Limitations**: Free lookups are limited; bulk validation requires a paid plan.[](clearoutphone.io/carrier-lookup/)
5. **NumLookup** (numlookup.com)  
   – **Features**: Identifies carriers for mobile, landline, and VoIP numbers with real-time data from carrier databases. Supports fraud prevention and cost management.  
   – **How to Use**: Enter a 10-digit phone number to get instant carrier details.  
   – **Limitations**: May not provide personal owner information due to privacy laws.[](www.numlookup.com/phone-carrier-lookup)
6. **IPQS** (ipqualityscore.com)  
   – **Features**: Checks carriers, line types, and geographic data for numbers worldwide. Supports fraud detection and marketing compliance.  
   – **How to Use**: Enter the phone number for free carrier lookup; includes porting checks for accuracy.  
   – **Limitations**: Free tier offers 1,000 lookups per month; advanced features require payment.[](www.ipqualityscore.com/free-carrier-lookup)
7. **SMSPool** (smspool.net)  
   – **Features**: Identifies mobile carriers and checks if a number is VoIP or tied to a physical SIM card. Useful for verifying numbers for SMS verifications.  
   – **How to Use**: Enter the phone number with the country code (e.g., 1234567890 for U.S.).  
   – **Limitations**: Database updates daily, so accuracy isn’t guaranteed 100%.[](www.smspool.net/free-carrier-lookup)
8. **FreeCarrierLookup** (freecarrierlookup.com)  
   – **Features**: Provides carrier name and whether a number is wireless or landline. Includes email-to-SMS/MMS gateway addresses for U.S./Canadian numbers.  
   – **How to Use**: Enter the phone number on their site for instant results.  
   – **Limitations**: Limited to one free lookup per day for individual users; API or batch processing requires payment.[](freecarrierlookup.com/)[](https://www.reddit.com/r/ciscoUC/comments/pnops9/carrier_lookup_tool/)
**Tips for Choosing a Tool**:  
– For **business use** (e.g., SMS marketing or fraud prevention), prioritize tools with API access or bulk lookup options like Messente or ClearoutPhone.  
– For **personal use** (e.g., identifying spam callers), simpler tools like NumLookup or SMSPool suffice.  
– Be aware that phone number portability (switching carriers while keeping the number) can cause occasional inaccuracies. Tools like IPQS or Data247 (data247.com) emphasize real-time porting checks for better accuracy.  [](www.ipqualityscore.com/free-carrier-lookup)[](www.data247.com/services/carrier-lookup)
– Most tools ensure privacy by not notifying the phone number owner during lookups.  
**Note**: Some services offer limited free lookups and charge for additional features (e.g., CarrierLookup.com charges $0.01 per lookup after the free daily limit). Always verify the tool’s coverage for your country and needs. For pricing details on paid plans, check the respective websites, as I don’t have specific cost information.  [](www.carrierlookup.com/)[](landlineremover.com/free-phone-carrier-lookup-tools)
If you have a specific phone number or country in mind, let me know, and I can guide you on the best tool to use!

 
 
Larry Chiang, 650-283-8008
⁦‪@LarryChiang‬⁩
Engineering Up a Tidal Wave Perpetual Promotion Machine #EUTWMPPM

At first focus. The start is sooo hard. After I got my first swath of #LeadGen customers, we just pooped out
#cellphoneNumberUnderwriting
– Caller ID for email
– Thin File Analysis
#thirdPartyDataVerification pic.x.com/vglGmOByjW

 
10/31/19, 10:41 AM
 
 


WordPress’d from my personal iPhone, 650-283-8008, number that Steve Jobs texted me on

https://www.YouTube.com/watch?v=ejeIz4EhoJ0

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