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Prospecting 19 December 2023

7 Ways to Get a List of Cell Phone Numbers [Tools to Use]

Daisy Shevlin

Looking for the best ways to generate a list of cell phone numbers to cold call potential prospects? These seven B2B prospecting tools can help.👇 


  1. Kaspr.
  2. Cognism.
  3. Seamless.AI.
  4. ZoomInfo.
  5. Lead411.
  6. RocketReach. 
  7. B2B Cell Phone Lists.

1. Kaspr

⭐ 4.4/5 on G2


Kaspr is an all-in-one B2B prospecting and sales intelligence platform; it’s an easy way to generate lists of phone numbers quickly and accurately. 


If you’re prospecting on LinkedIn, you need Kaspr. 


Use our LinkedIn Chrome Extension to capture a prospect’s information, including personal and business details like email addresses, job titles, phone numbers, and company names.


Graphic of Kaspr widget with button to click to show the prospect's phone number 

The Kaspr web app also allows you to build lists based on prospects you discover while creating filtered searches on LinkedIn Navigator. To generate your list, you need to create your LinkedIn search; Kaspr will then save and find the cell phone numbers and other data in bulk.


Sync these lists to your CRM so you can cold call them as quickly as possible.


Top features include: 

  • 500M+ email addresses and phone numbers available. 
  • Contact data updated in real-time and checked against 150 sources.
  • Easy-to-use web app and Chrome Extension. 
  • GDPR and CCPA aligned.
  • Option to add prospects to wait lists if data isn’t yet available.
  • Get cell phone numbers for free (5 phone credits per month on the free plan)


Get started with Kaspr for free. 🙌


Blog CTA graphic - Five phone number credits per month for free


2. Cognism

⭐ 4.6/5 on G2


Cognism is a sales intelligence platform with a web app and a browser extension that provides company, contact data and intent data too. 


It has one of the largest databases of up-to-date and accurate cell phone numbers for United States contacts, making it a popular choice for SDRs


Cognism’s Diamond Data® uses manual human verification to ensure the accuracy of B2B cell phone numbers in the database. 


And the database isn’t just accurate, it’s also GDPR and CCPA compliant. They check mobile numbers against global Do-Not-Call (DNC) registries, removing contact data that shouldn’t be there. 👊


Top features include: 

  • Human verification of contact data.
  • It is one of the largest databases of US contact information.
  • 98% accuracy rates for mobile phone numbers.
  • GDPR and CCPA compliance. 

3. Seamless.AI

⭐ 4.2/5 on G2


Seamless.AI is a solid platform for B2B SDRs who want to build cell phone lists quickly.


Their platform has a search engine that’s updated in nearly real-time, providing verified phone numbers, emails, and other critical contact data. They verified over 1.9B contact and company records in 2022. 


Like many tools on this list, Seamless.AI has a web app, a Chrome Extension, and plenty of integrations with popular CRM and sales intelligence tools. 


Top features include: 

  • Real-time continuous data verification.
  • Chrome Extension and web app.
  • 1.9B contact and company records verified in 2022.
  • Pitch intelligence and insights with AI features. 

4. ZoomInfo

⭐ 4.4/5 on G2


ZoomInfo is often used as a cell phone lookup service, offering B2B contact and company data. It comes with both a web app and a Chrome Extension. 


ZoomInfo’s database of phone numbers has advanced search filters. Search for prospects based on industries, job titles, locations, company size, etc. They also have intent data available. 


Top features include: 

  • Advanced search filters.
  • Intent data with real-time alerts.
  • Website visitor tracking.
  • CRM integrations. 

5. Lead411

⭐ 4.5/5 on G2 


Lead411 is a B2B database with intuitive search functions. 


They have a 96% accuracy rate for phone numbers. The platform uses a combined AI and human verification approach to ensure that the data they pull from multiple sources is up-to-date. 


Bombora intent data is also available, allowing you to identify prospects actively in the market.  


Lead411 is often used as a data enrichment platform, with brands updating contact data in their CRM from the platform’s database. 


Top features include: 

  • Bombora intent data. 
  • Human and AI verification of phone numbers.
  • Data enrichment capabilities. 

6. RocketReach

⭐ 4.5/5 on G2


RocketReach has over 4.5B records in its database. The platform uses AI to continuously scan multiple sources to verify and maintain contact data accuracy, including (of course!) phone numbers and email addresses. 


The database has advanced search features to narrow your searches with filters like a prospect’s education, role, department, skills, or years of experience. You can also search by a company’s number of employees, revenue, and industry.


Some plans include intent data. 


Top features include: 

  • Advanced search based on company and personal traits.
  • Fast lookup speeds.
  • Chrome Extensions and web database available.
  • Extensive integrations with other sales intelligence tools and CRMs.
  • Bulk lookup. 
  • AI verification. 

7. B2B Cell Phone Lists

No G2 Rating 


B2B Cell Phone Lists is a smaller provider that makes it easy to find cell phone numbers for B2B and B2C businesses in the US. 


They also offer web scraping and list-building services, which can be helpful in collecting a large number of contact phone numbers quickly. That being said, its compliance status regarding GDPR and CCPA regulations isn’t clear, so it depends on what your needs around that are. 


Top features include:

  • USA B2B and B2C phone numbers. 
  • Site crawlers update data periodically.
  • Web scraping tools may help accelerate data collection. 

Use Kaspr to find cell phone numbers free

Kaspr’s web app and LinkedIn Chrome extension make it easy to find accurate B2B cell phone numbers quickly… and for free. 


All contact data is updated in real-time, and you can access prospects’ phone numbers and email addresses on LinkedIn and through LinkedIn Navigator. Build segmented lists within the app and use automated workflows to streamline data syncing and outreach.


Ready to build prospect lists and find cell phone numbers for free? Kaspr is ready to help. Sign up for free today. 👈


✅ GDPR and CCPA aligned.
✅ 500M+ phone numbers and email addresses.
✅ 200M+ business profiles.
✅ All-in-one prospecting tool.
✅ Fully self-service.
✅ Customizable plans.

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