Phone tracking numbers

In call tracking, a tracking number is a unique phone number used to monitor and attribute phone calls to specific marketing campaigns, sources, or activities. These numbers are part of a system designed to help businesses understand which marketing efforts are driving inbound calls and measure their effectiveness.

Get Started

Step 1. Go to Tracking > Numbers and click on the '+ Add' button.

Step 2. Choose where you wish to place your tracking numbers. and click 'Next'.

1. All online sources: If you choose 'All Online Sources', you'll be able to track phone calls from various channels, including Google Ads, Organic, Referral, and more.
2. Specific Online Channel: Opt for the 'Specific Online Channel' option if you want your tracking number dedicated to monitoring just one online channel, such as Google Search Ads or Google My Business.
3. Somewhere else: By selecting the 'Somewhere Else' option, your tracking number will exclusively track calls from a specific offline source, like a newspaper or a billboard.

Step 3. **Click 'Next**' on the channel configuration menu screen.

Step 4. In the next step, you will decide how many tracking numbers are necessary to effectively monitor your phone calls.

This is where the concept of the pool comes into play.

The Call Tracking Pool is a collection of available tracking numbers ready to be assigned to new sessions when visitors land on your website. If you already know the quantity of tracking numbers you'll need, simply enter the amount in the 'Quantity' field. Otherwise, you will need to calculate your pool based on your requirements.

2 ways you can calculate your pool

1. Manually: To manually calculate your pool, start by determining your hourly peak visitors. Access Google Analytics 4 and navigate to: Audience > Overview > Users (hourly). Identify your peak number. Then come back to Nimbata and click on the "Get from calculator" button.

Insert your hourly peak visitors and Nimbata will promptly reveal the required number of tracking numbers based on your traffic and average session duration. Click on "Use Pool" to proceed.

2. Through GA4: Connect Nimbata with GA4 effortlessly by clicking "Get from Google" and granting access to Nimbata.

Select the desired Account and GA4 Property from which you want Nimbata to retrieve data. Your recommended pool will then appear as shown below:

Step 4. Click on 'Use recommended pool of X tracking numbers' or select a specific channel and use the recommended pool for it only.

Step 5. Choose your tracking number prefix by selecting the State and City for the US, or City for EU, UK, and AU. Then, pick the numbers you wish to use from the provided list. If you need more than 10 numbers, then they will be picked automatically for you. Once done, click on 'Finish'.

Step 6. You will be taken back to your Tracking Numbers list. From there you can give a friendly name for your numbers that will help you recognize them, for example, 'US Maryland Numbers'. To do that you can:

Either click on the number name, edit it and click on the green check mark next to it.

OR:

1. You can bulk edit names by ticking the numbers you want to edit and clicking the 'Modify number name' button.

2. Then, choose a new name and click 'Change'.

Step 7. Go to Tracking > Destinations and enter your Destination Number. The destination number is the phone number that will ring when someone calls using the specific tracking numbers.

Step 8. Click on the '+ Add' button, select the country your destination number belongs to, type the number, give it a name, and click on 'Add Destination'.

[Optional] Step 8.5. If you have not already set up a call flow for this destination number, you can tell Nimbata to create the call flow for you by ticking the 'Create call flow for x' field right before you click on 'Add Destination'.

Adding a tracking number to the same number pool

Do you already have a number pool and want to add more tracking numbers to it instead of creating a new one from scratch? Follow the steps below to do this.

Step 1. Go to Tracking > Numbers.

Step 2. Locate the number pool you wish to expand. Click on the three-dot menu to the right of the pool and select 'Add tracking number(s) to this group'.

Step 3. Go back to Step 2 at the beginning of this guide and follow the outlined process for adding new tracking numbers.

Once finished, the new numbers will be added to the same pool and will function alongside your existing tracking numbers!

Ideal for sudden traffic spikes that require a larger number pool to maintain accurate call attribution.

🎉 Congratulations! The Tracking Numbers are now yours. Continue with creating your first call flow in order to start receiving calls through your new tracking numbers.

Updated on: 23/12/2025