What Is l.wl.co in Google Analytics? Understanding WhatsApp Referral Traffic and How to Track It Better

Welcome to our website. If you’ve ever logged into Google Analytics and noticed l.wl.co as a referral source, you might have wondered what it is, where it’s coming from, and why it’s showing up in your reports. The domain l wl co is a bit cryptic at first, but it actually has a clear explanation.

Let’s walk through what l.wl.co means, how it relates to WhatsApp, and what you can do to track this kind of traffic more accurately—especially if you rely on WhatsApp to engage users, convert leads, or drive traffic to your website.

So, What Is l.wl.co?

l.wl.co is the domain WhatsApp uses when someone clicks a link shared through its app. If you’re seeing it as a referral source in Google Analytics, it means users are visiting your site via WhatsApp. This is especially common if you’re sharing links through WhatsApp Business or via share buttons that open the app.

Many people search phrases like “unusual referral traffic in GA4” or “why is l.wl.co showing up in Analytics” because it’s not immediately obvious that it’s tied to WhatsApp. In this case, l.wl.co = WhatsApp click-throughs.

But there’s a catch: while it’s helpful to know WhatsApp is driving traffic, Google Analytics won’t show you much detail beyond that. You’ll see that the session came from l.wl.co, but not:

  • Who shared the link
  • Which message or campaign it came from
  • Whether it came from a group chat, business broadcast, or direct message
  • What specific link or button drove the visit

Why This Matters for Marketers and Businesses

WhatsApp is becoming a huge part of customer acquisition and retention, especially in regions where it’s a preferred communication tool. If you’re working with this tool, then you’ve probably also asked: “How do I track WhatsApp traffic in GA4?”, or “Can I create UTM links for WhatsApp?” You’re not alone.

The problem is, referral traffic from messaging apps like WhatsApp is hard to analyze using default settings. Even when Google Analytics shows you that traffic came from WhatsApp, it doesn’t reveal much beyond the domain.

How To See WhatsApp Referrals in Google Analytics

You can find WhatsApp referral links in GA4 by navigating to:

Reports → Acquisition → Traffic Acquisition → + Add Dimension → Session Source

Then, search for referral and look for l.wl.co, t.co, or l.instagram.com—other common referrers from apps and social shares.

This is often where people also find unknown or unusual traffic sources like:

  • lm.facebook.com
  • r.facebook.com
  • l.instagram.com
  • web.telegram.org

But even with that info, there’s still limited context. You know what domain referred the user, not which specific message, group, or post did the work.

How To Track WhatsApp Traffic More Accurately

If you’ve searched “how to track WhatsApp links in Google Analytics” or “best UTM tags for WhatsApp”, the answer is simple: use UTM parameters.

Here’s an example of a sample link:

https://yourwebsite.com/pageutm_source=whatsapp&utm_medium=chat&utm_campaign=offer_summer2025
With this structure, you’ll be able to track:

  • Source: WhatsApp
  • Medium: Chat
  • Campaign: Offer Summer 2025 (or whatever label you choose)

That way, you’re no longer just seeing “referral from l.wl.co”—you’re seeing meaningful data.

This approach is great for anyone managing:

  • Multiple marketing campaigns
  • Traffic attribution for WhatsApp messages
  • WhatsApp Business links shared in ads or newsletters

A Tool to Help You Go Further

If you’re handling lots of campaigns and wondering how to manage all your WhatsApp traffic in one place—or how to attribute it clearly across links, groups, or clients—you might want to explore tools built for chat-based engagement.

View this video about this topic and how you can track your WhatsApp Referrals.

The problem is that WhatsApp is not going to send you more information on top of that.

One option is Chatwith.io. If you need to track your leads with more detail, please contact us. We have a very cool control panel for agencies and businesses willing to track the leads and performance. It’s not a typical tracking platform, but it helps you:

  1. Generate and organize shareable WhatsApp group links
  2. Manage chat links for different campaigns or teams
  3. Understand who’s clicking, from where, and when

How to generate a report in Google Analytics with FULL URL for referrals to spot WhatsApp links

To check referral sources in Google Analytics, start by logging into your GA4 property and clicking on Reports.

  • Navigate to Acquisition → Traffic Acquisition. By default, you’ll see a table grouped by Default Channel Grouping, which includes categories like Organic Search, Direct, and Referral. However, this view doesn’t show you exactly which domains are sending traffic to your site under the “Referral” category.
  • To get that information, click the plus (+) icon above the table, then select Traffic Source → Session Source.
  • In the search bar, type “referral” and press Enter. This will filter the data so you can see the specific domains that are referring visitors to your site.

Final Thoughts

Seeing l.wl.co in your analytics report is a good sign—it means WhatsApp is driving traffic. But unless you’re actively tagging your links or using a tool to help manage and track them, you’re likely missing out on the why, how, and from where.

Start small. Try adding UTM parameters to one link. Monitor the results. See what works. And if you find yourself juggling multiple links, groups, or campaigns, consider using a platform like Chatwith.io to stay organized and track performance with less guesswork. If you’ve been looking up terms like “how to track WhatsApp leads”, “WhatsApp link tracking for agencies”, or “lead attribution from messaging apps”, a tool like this might be just what you need to fill in the gaps.

There’s no need to overhaul your workflow—just one link at a time.

Tracking users with Google Ads, Facebook Ads or TikTok Ads

How to automate your campaigns using WhatsApp API.

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