What is dynamic number insertion and why do I need it?

Dynamic number insertion (DNI) is a script that swaps the phone number on your website based on each visitor's traffic source. Without it, every visitor sees one number and you can't tell which channel drove a call.

How long does setup take?

Under 15 minutes. Install one script through Google Tag Manager or your site head, set number pools per source, and attribution starts with the next session. Standard setups need no developer.

How many tracking numbers do I need?

Enough for each visitor in a pool to hold a number for their session, so pool size follows each source's daily traffic. Convirza pools expand without changing your site setup.

Does Convirza DNI work with Google Ads click-to-call?

Yes. Calls from click-to-call ads are attributed to the campaign, ad group and keyword, and call conversions flow back to Google Ads so bidding optimizes on call quality.

What if a visitor has JavaScript disabled?

The visitor sees your default number and the call still routes correctly. It just won't carry session-level attribution.

DYNAMIC NUMBER INSERTION

Dynamic number insertion that shows which keyword rang.

DNI swaps the number on your website by visitor source, so every call ties to its campaign, keyword and channel.

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$20 in credits. No credit card.

<15 min

To set up DNI

3B+

Calls scored on the platform

375+

Area codes for local numbers

THE REAL PROBLEM

Why can't you see which ads drive calls?

Convirza DNI sets up in under 15 minutes with one script. Without DNI, every visitor sees the same number. The call rings and the lead converts, but your reports credit direct or organic traffic. The Google Ads campaign that drove it gets nothing.

So your bidding never sees calls, and paid search loses the budget review.

THREE STEPS

How does dynamic number insertion work?

Install one script

Add one JavaScript snippet through Google Tag Manager or your site head, and choose which traffic sources get which number pool.

Each session gets its own number

A Google Ads visitor sees a number tied to that campaign; an organic visitor sees another. Keyword, page and referrer ride along with the call.

Calls are attributed and scored

Convirza logs the source, records the call and scores it with Conversation Analytics™. Keyword to call to outcome writes back to Google Ads, GA4 and your CRM.

BUILT FOR

Who uses dynamic number insertion?

Paid search teams spending on keywords they cannot verify

Google Ads bids blind when it never gets a call conversion. DNI sends that signal back, so budget moves to keywords that convert.

Agencies managing multi-channel budgets for clients

Clients want to know what's working across Google, Meta and organic. DNI puts every channel that drove a call in the report, not only form fills.

Marketing ops teams building attribution stacks

GA4, your CRM and your ad platform disagree on lead source. DNI ties the session to the call to the deal, and webhooks sync it across your stack.

Frequently asked questions

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The product behind it

See which campaigns are driving your calls. Starting with the next visitor.

Set up DNI in under 15 minutes. No credit card. Start free with $20 in credits.

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