Searching for a prospect’s phone number? Chrome Extensions that provide contact details will speed up the process.
Chrome Extensions for finding contact numbers
Contact-finding Chrome Extensions can help you quickly find and extract prospects’ phone numbers. These are the 9+ best Chrome Extensions for finding prospect contact details (including phone numbers) in 2025. 👇
1. Cognism
4.6/5 on G2 ⭐
Kaspr is part of the Cognism Group, and it just got an upgrade with the launch of Sales Companion! Sales Companion is everything you love about Kaspr, but with more powerful features, deeper integrations, and global coverage.
Cognism is a B2B contact database known for its high accuracy rates in both European and US phone numbers.
Cognism’s Chrome Extension (which also works across other browsers) allows you to access Cognism’s data while browsing LinkedIn and LinkedIn Sales Navigator, company websites, and your CRM or sales engagement tools. It displays Cognism’s data, which you can save and add to your CRM data.
Top features of Cognism
- Phone-verified cell phone numbers to help you connect with 87% of your list.
- Find direct dial phone numbers for your prospects.
- Exclusive on-demand verified cell phone and email data set Diamond Data®.
- GDPR and CCPA compliant & DNC list scrubbing in 13 countries (more than any other competitor).
- Combined human and AI verification for maximum data quality.
- Access US and European phone numbers on multiple websites, including LinkedIn.
Pros and cons
The pros of Cognism’s number-finding Extension include:
- Discover new prospects and their data at once.
- You can use the data for prospects in your CRM.
- Exceptionally high data accuracy rates for B2B phone numbers (will connect you with 87% of your list).
The cons include:
- It may be better suited to large teams or high-growth companies than to individual people.
- The Chrome Extension is only available to paying customers.
- You can test the data accuracy with a free data sample.
Pricing information and plans:
- Contact sales for pricing.
- You can get a free data sample to test the phone numbers Cognism has.
2. Apollo.io
4.8/5 on G2 ⭐
Apollo.io’s Chrome Extension allows you to access Apollo’s database while browsing other sites and using tools. These tools include LinkedIn, Gmail, Salesforce, HubSpot, and major brand company sites.
Simply click on the Extension while browsing, and you can see contact information like a prospect’s name and phone number.
Top features of Apollo.io’s platform
- Use across multiple popular sales tools, LinkedIn, and major brand sites.
- Access Apollo’s data while browsing online.
- Enrich CRM data in-app.
Pros and cons
The pros of Apollo’s number-finding Extension include:
- Highly rated by customers.
- Can find and enrich phone numbers through multiple tools.
- Some phone credits come with the free plan.
The cons include:
Pricing information and plans:
- Apollo.io has a free plan with 5 cell phone credits per month.
- The Basic plan is $49 and comes with 900 cell phone credits annually.
3. ZoomInfo
4.4/5 on G2 ⭐
ZoomInfo’s Chrome Extension works like other tools discussed so far. Free for ZoomInfo customers, use the Extension to access prospect phone numbers and key details while browsing online.
Top features of ZoomInfo
- Add qualified prospects to email lists.
- Export contact data effortlessly.
- Export searches to tools thanks to over 70+ integrations.
- Access phone numbers, email addresses, and key buying signals.
Pros and cons
The pros of ZoomInfo’s number-finding Extension include:
- List-building and automation features.
- Easy prospect export.
- Buyer intent data in addition to primary contact data.
The cons include:
Pricing information and plans:
- A free trial is available.
- Contact sales for pricing information.
4. RocketReach
4.5/5 on G2 ⭐
RocketReach’s desktop Chrome Extension allows you to access RocketReach’s database while browsing online. Get professional phone numbers from contacts while browsing LinkedIn, AngelList, CrunchBase, and company websites. Discover which key players work for a specific company and get their contact information at the same time.
Top features of RocketReach
- Use on multiple websites and social platforms.
- Access RocketReach’s extensive database.
- Get company information like annual revenue and industry.
Pros and cons
The pros of RocketReach’s number-finding Extension include:
- Easy to use.
- Use on diverse databases.
- Free for RocketReach customers.
The cons include:
- Some reviews reported poor customer experiences or support.
- Some reviews noted that even inaccurate contact data chews up credits.
Pricing information and plans:
- You need the Pro plan or higher (starting at $99 per month) to access phone credits, which offers unlimited cell phone numbers and 3600 exports.
5. Seamless.AI
4.2/5 on G2 ⭐
Seamless.AI’s Chrome Extension can be used anywhere online (according to Seamless.AI), including company websites and LinkedIn. You can research companies or contacts with a few clicks and automate list building.
Top Seamless.AI features
- Company and contact research capabilities.
- Update CRM with AI-driven data enrichment.
- Enrich Gmail contacts in-app.
Pros and cons
The pros of Seamless.AI’s number-finding Extension include:
- The Extension itself is free.
- Simple interface for both company and contact research.
- Works well on both company websites and LinkedIn.
The cons include:
- User reviews note the lowest-cost plans are more expensive than many competitors.
- Some users report regularly crashing of Extension.
Pricing information and plans:
- The Free plan includes 50 credits per month.
- Contact sales for additional pricing information.
6. ContactOut
4.5/5 on G2 ⭐
ContactOut is an AI-focused prospecting search engine with functionality in its own database and on LinkedIn social media profiles.
The ContactOut Chrome Extension can help with this, providing access to over 300M prospects’ data, like phone numbers and emails.
Top features of ContactOut
- Automated outreach with AI-crafted messages.
- Built-in list building and CRM syncing features.
- Integrate with over 5,000 apps.
Pros and cons
The pros of ContactOut’s number-finding Extension include:
- AI-boosted search available.
- Extensive integrations are available.
- Automated, AI-crafted outreach.
The cons include:
- One review noted that the database contained inaccurate data.
Pricing information and plans:
- ContactOut’s free plan offers 2 phone numbers per day.
- The Sales plan costs $79 and has 600 phone numbers per year.
7. Lusha
4.3/5 on G2 ⭐
Lusha’s Chrome Extension can quickly help you find B2B email addresses and phone numbers. Access Lusha’s contact data through the Extension on LinkedIn (and platforms like LinkedIn’s Sales Navigator and Recruiter), Salesforce, or company websites. You can also begin outreach through the Extension.
Lusha’s top features
- Start the outreach process without leaving the page.
- Use on multiple LinkedIn platforms, Salesforce, and company pages.
- Sync data with HubSpot or Salesforce CRMS.
Pros and cons
The pros of Lusha’s number-finding Extension include:
- CRM integrations.
- Easy-to-use interface.
- Automated outreach.
The cons include:
Pricing information and plans:
- Lusha’s free plan includes 5 phone number credits.
- The Pro plan costs $29 per user, and comes with 480 phone number credits.
8. SignalHire
3.5/5 on G2 ⭐
SignalHire’s Chrome Extension can provide direct contact information, including phone numbers. It works on social media profiles including; LinkedIn, Twitter, Facebook, and GitHub.
It may find up-to-date business or personal phone numbers, personal emails, and social media profiles for prospects.
Top Signalhire features
- Find not only phone numbers and emails but also social profiles.
- Works on different social media platforms compared to other Extensions.
- 5 free credits monthly.
Pros and cons
The pros of SignalHire’s number-finding Extension include:
- Integrates with popular CRMs.
- Multiple customer support options.
- Open API for data enrichment.
The cons include:
- Use the data carefully because some prospects won’t want outreach to their personal contact information.
- Reviews noted that “verified” contact information was often inaccurate.
Pricing information and plans:
- All paid plans include the Chrome Extension.
- Plans start at $49 per month, and you can choose a phone number-only plan for 100 phone credits.
9. Swordfish.AI
4.5/5 on G2 ⭐
Swordfish’s Chrome Extension can work on individual prospect profiles and entire lists, allowing you to streamline prospecting.
You can pull phone numbers and verified business emails for lists in seconds. It works on Google, Bing, Facebook, LinkedIn, GitHub, Twitter, and StackOverflow.
Top Swordfish.AI features
- Find contact information in bulk.
- Access multiple social media sites and search engines other Extensions don’t.
- 3.5 billion individual data points.
Pros and cons
The pros of Swordfish’s number-finding Extension include:
- Highly rated, with 4.8 stars on Google Chrome.
- Flexibility in use with individual or bulk prospecting.
- Partner with cell phone carriers to verify data.
The cons include:
- Works on multiple social media profiles but not company sites.
Pricing information and plans:
- Contact sales for pricing.
10. UpLead
4.7/5 on G2 ⭐
UpLead’s Chrome Extension is similar to the rest on our list, allowing you to capture lead information directly from your browser. Access lead data from a prospect’s LinkedIn profile and load company data in a single click. Sync the data to your CRM or download it to CSV.
UpLead’s top features
- Effortless data sync and CSV export.
- Prospect and enrich data.
- See related contacts to leads you’re viewing.
- 95% data accuracy.
Pros and cons
The pros of UpLead’s number-finding Extension include:
- Features like “related contacts” to make prospecting easier.
- Simple-to-use interface.
- Access to data like company tech stack.
The cons include:
- Pricing may be too high for small teams or individual SDRs.
- Some teams report low phone number accuracy rates.
Pricing information and plans:
- The Essentials plan costs $99 per month and includes 170 credits, which can be used on email and phone number credits.
How can I find a phone number for free?
There are plenty of methods you can use to find someone’s cell phone number free, but make sure you choose methods known for both high accuracy and compliance with privacy laws.
The Cognism Sales Companion browser extension can help with that—it is GDPR and CCPA compliant and has a large database, particularly in Europe, where other competitors lack.
What Chrome Extensions find phone numbers from LinkedIn?
Plenty of Chrome Extensions can help find phone numbers from LinkedIn, but Kaspr and Cognism are among the best. They have reliable accuracy rates, are easy to use, and are self-service prospecting tools.
👉 Here are some Chrome Extensions that work with Sales Navigator.
Get a phone number list from Cognism
Kaspr is part of the Cognism Group, and it just got an upgrade with the launch of Sales Companion! It’s everything you love about Kaspr, but with more powerful features, deeper integrations, and global coverage. Take their data for a test drive with the 25 free leads today.