Know Exactly Which Marketing Drives Phone Calls
Our Dynamic Number Insertion technology automatically displays unique tracking numbers based on how visitors found your site, enabling precise attribution of phone leads.
41%
Higher Marketing ROI
100%
Call Attribution
10 min
Implementation Time
Call Tracking Dashboard
Real-time marketing insights
Google Ads
42%Organic
28%Social
21%Direct
9%Call Volume by Campaign
183
24.7%
Dynamic Number Insertion
Track the true source of your leads and optimize your marketing ROI with our advanced call tracking solution.
Track Marketing ROI
See exactly which marketing channels drive phone calls and calculate true campaign performance.
Source Attribution
Attribute every call to its specific marketing source, from Google Ads to social media and beyond.
UTM Parameter Tracking
Capture campaign, source, medium and other UTM parameters to gain deeper marketing insights.
Simple JavaScript Implementation
Get started quickly with our lightweight JavaScript snippet that's easy to deploy on any website.
Maximize Your Marketing Budget
SureLeadFlow's Dynamic Number Insertion (DNI) technology automatically displays unique phone numbers to your website visitors based on how they found your site, enabling accurate attribution of phone calls to specific marketing sources.
With this powerful data in hand, you can optimize your marketing spend, double down on high-performing channels, and eliminate wasted ad budget to drive more leads at a lower cost per acquisition.

How It Works
Seamless visitor tracking from click to call
Visitor Arrives
When a visitor lands on your website, our system identifies their traffic source
JavaScript Detects Source
Our script detects whether they came from Google Ads, organic search, social media, etc.
Number Replacement
Your regular phone number is dynamically replaced with a unique tracking number
Call Forwarding
When the visitor calls, it's forwarded to your business while recording the source
Analytics & Reporting
Call data is logged in your dashboard with complete attribution information
ROI Optimization
Use the attribution data to optimize marketing spend and increase conversions
Track Marketing ROI
See the true value of your marketing efforts
Paid Search Attribution
Identify which Google Ads keywords and campaigns drive phone conversions
Social Media Tracking
See which social platforms and campaigns generate valuable phone leads
Organic Search Insights
Track which SEO efforts result in phone calls to understand ROI
Traditional Media Tracking
Assign unique numbers to offline campaigns to track effectiveness
Cost Per Call Analysis
Calculate the exact cost per phone lead for each marketing channel
Conversion Reporting
Track which calls converted to sales to measure true campaign value
Source Attribution
Connect phone calls to their specific marketing origins
First-Touch Attribution
Track the original source that brought visitors to your site
Multi-Touch Attribution
See the complete customer journey across multiple visits
Cookie Tracking
Maintain visitor source data even across multiple sessions
Channel Grouping
Organize sources into meaningful categories for easier analysis
Referral Tracking
See which external websites are driving valuable calls
Direct Visit Identification
Distinguish between typed-in visits and other marketing channels
UTM Parameter Tracking
Capture detailed campaign data from your digital marketing
Campaign Tracking
Identify which specific marketing campaigns drive phone calls
Medium Identification
Track whether calls came from email, CPC, social, or other channels
Source Tracking
See which specific sites or platforms your callers came from
Content Parameter
Identify which specific content or assets drove phone calls
Term Capture
Track the specific paid keywords that drove each phone call
Custom Parameters
Track additional custom UTM parameters specific to your needs
Simple JavaScript Implementation
Get started in minutes with our lightweight code snippet
- Copy & paste installation requires no technical expertise
- Works with all website platforms including WordPress, Shopify, and custom sites
- Automatically detects and replaces all phone numbers on your site
- No impact on page load speed with asynchronous loading
- Compatible with Google Tag Manager for easy deployment
Implementation Example
<!-- SureLeadFlow DNI Tracking Code -->
<script>
(function(w,d,s,l,i){
w[l]=w[l]||[];w[l].push({'dni.setup':new Date().getTime(),event:'dni.loaded'});
var f=d.getElementsByTagName(s)[0],
j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';
j.async=true;j.src='https://cdn.sureleadflow.com/dni.js?id='+i+dl;
f.parentNode.insertBefore(j,f);
})(window,document,'script','dniLayer','SLF-XXXX');
</script>
Replace 'SLF-XXXX' with your unique account ID
One snippet provides all functionality with no additional configuration needed
Seamless Integration With Your Marketing Stack
Connect SureLeadFlow's Dynamic Number Insertion with your existing tools for a complete view of your marketing performance
Ready to Track Your Marketing ROI?
Start seeing which marketing channels drive valuable phone calls and optimize your budget for maximum results.
What Our Customers Say
Businesses of all sizes trust our Dynamic Number Insertion to track and improve their marketing ROI.
"Dynamic Number Insertion has transformed how we measure marketing success. We can now see exactly which campaigns drive phone calls, allowing us to optimize our spend and increase ROI by 43%."
Sarah Johnson
Marketing Director, TechSolutions Inc.
"Implementation was incredibly easy - just a single JavaScript snippet and we were up and running in minutes. Now we can track UTM parameters from our digital ads all the way to phone conversions."
David Chen
Digital Manager, GrowthBiz Agency
"As a local service business, phone calls are our most valuable leads. DNI has shown us that 68% of our quality calls come from Google Ads, allowing us to reallocate budget from underperforming channels."
Michael Rodriguez
Owner, Elite Plumbing Services
Ready to Track Your Marketing ROI?
Start your 14-day free trial today. No credit card required.
Frequently Asked Questions
Find answers to common questions about our Dynamic Number Insertion solution.