diff --git a/rules/first-party.list b/rules/first-party.list
index 8bd2045..3eb150d 100644
--- a/rules/first-party.list
+++ b/rules/first-party.list
@@ -75,3 +75,7 @@ pardot.com
 # Fathom
 # https://usefathom.com/docs/settings/custom-domains
 starman.fathomdns.com
+# Lead Forensics
+# https://www.reddit.com/r/pihole/comments/g7qv3e/leadforensics_tracking_domains_blacklist/
+# No real-world data but the website doesn't hide what it does
+ghochv3eng.trafficmanager.net