diff --git a/cara/apps/calculator/user.py b/cara/apps/calculator/user.py
index 3f35094a..a678e760 100644
--- a/cara/apps/calculator/user.py
+++ b/cara/apps/calculator/user.py
@@ -12,6 +12,10 @@ class User:
         """Return True if current user is not authenticated."""
         raise NotImplementedError
 
+    def domain(self) -> str:
+        """Return a domain for this user. The domain must not be specific enough to identify a single user."""
+        return 'other'
+
 
 @dataclass
 class AuthenticatedUser(User):
@@ -25,9 +29,16 @@ class AuthenticatedUser(User):
     def is_anonymous(self) -> bool:
         return False
 
+    def domain(self) -> str:
+        if self.email.lower() == "cara.un@cern.ch" or self.email.endswith('@un.org'):
+            return 'UN.org'
+        elif self.email.lower().endswith('@cern.ch'):
+            return 'CERN'
+        else:
+            return 'other'
+
 
 class AnonymousUser(User):
-
     def is_authenticated(self) -> bool:
         return False
 
diff --git a/cara/apps/static/js/usage-tracking.js b/cara/apps/static/js/usage-tracking.js
index 1e12172c..60ac23c5 100644
--- a/cara/apps/static/js/usage-tracking.js
+++ b/cara/apps/static/js/usage-tracking.js
@@ -1,5 +1,8 @@
 if (document.location.hostname == "test-cara.web.cern.ch") {
   var _paq = _paq || [];
+  if (typeof AuthUserDomain !== 'undefined') {
+      _paq.push(["setCustomVariable", 1, "AuthUserDomain", AuthUserDomain, "visit"]);
+  }
   _paq.push(["trackPageView"]);
   _paq.push(["enableLinkTracking"]);
   (function () {
@@ -17,6 +20,10 @@ if (document.location.hostname == "test-cara.web.cern.ch") {
   })();
 } else if (document.location.hostname == "cara.web.cern.ch") {
   var _paq = _paq || [];
+  if (typeof AuthUserDomain !== 'undefined') {
+      _paq.push(["setCustomVariable", 1, "AuthUserDomain", AuthUserDomain, "visit"]);
+  }
+  _paq.push(["setCustomVariable", 1, "AuthUserDomain", AuthUserDomain, "visit"]);
   _paq.push(["trackPageView"]);
   _paq.push(["enableLinkTracking"]);
   (function () {
diff --git a/cara/apps/templates/layout.html.j2 b/cara/apps/templates/layout.html.j2
index 04448fa3..0bc9c4b1 100644
--- a/cara/apps/templates/layout.html.j2
+++ b/cara/apps/templates/layout.html.j2
@@ -77,6 +77,9 @@
         // Disabled until we tidy up the CSS... ;)
         <li><a href="/auth/logout">Sign out</a></li>
       -->
+      <script>
+        var AuthUserDomain = "{{ user.domain() }}";
+      </script>
       {% endif %}
       <li><a href="https://cern.ch/directory" class="cern-directory ext"title="Search CERN resources and browse the directory" data-extlink="">Directory</a></li>
     </ul>