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What is call tracking?
Call tracking shows which advert, search, listing or campaign made someone phone a business. It does it by giving each source its own phone number, and recording which number was called.
Why it matters
Online, almost everything is measured. You can see how many people clicked an ad, which page they landed on and whether they filled in a form. But for most local and service businesses, the most valuable enquiries arrive by phone, and a phone call leaves no trail in your analytics. Without call tracking, a business spending money on Google Ads, Facebook, directories and print has to guess which of them is working.
Asking callers “how did you hear about us?” helps a little, but people misremember, staff forget to ask, and the answer is never “the third ad in the Fareham roofing campaign for the search ‘roof leak repair’”.
How call tracking works
There are two kinds of tracking number, and most businesses use both.
Static (fixed) numbers
A static number is assigned to one source and never changes: one for the Google Business Profile, one for Checkatrade, one for the leaflet, one for the van. Every call to that number came from that source. Simple and reliable, and the only option for anything offline.
Dynamic numbers
A website has visitors from many sources at once, so one fixed number can't tell them apart. Dynamic number insertion shows each visitor a different number from a small pool and remembers where that visitor came from. When the number rings, the call is matched to the visit, including the ad campaign and keyword. This is how you track calls down to the ad for Facebook ads and the keyword for Google Ads.
What call tracking software records
- The source: which number was called, and for website visitors the channel, campaign, keyword and landing page.
- The call: who called, when, how long it rang and whether it was answered, missed or went to voicemail.
- The conversation, if recording is on: the recording, a transcript and often a summary.
- The outcome: whether the caller became a lead, got a quote or booked, so you can measure jobs rather than calls.
Who uses call tracking
Marketing agencies use it to prove the value of their campaigns and to optimise ad spend toward the keywords that bring calls. More on call tracking for agencies.
Trades and home-service businesses such as roofers, plumbers and builders use it to see which listings and ads book jobs, and to catch missed calls before the customer rings someone else. More on call tracking for trades.
Multi-location and high-ticket businesses such as clinics, solicitors, car dealers and estate agents use it to route calls to the right branch and to measure which campaigns bring valuable enquiries.
What to look for in a call tracking provider
- UK local numbers, and the ability to move existing numbers in.
- Dynamic number insertion per visitor, not just per channel.
- Conversions sent back to Meta, Google Ads, Microsoft Ads and GA4.
- Recording with a caller notice, transcripts and summaries you can actually skim.
- Missed-call alerts, opening hours, menus and voicemail.
- For agencies: many clients in one login, client logins, and per-client usage.
- Clear data processing terms under UK GDPR.
Calltrail covers all of these. Book a demo and we'll show you how it looks with sample clients.