diff --git a/modules/pubmaticBidAdapter.js b/modules/pubmaticBidAdapter.js
index 1a5de695c3c..02c43e1c2a9 100644
--- a/modules/pubmaticBidAdapter.js
+++ b/modules/pubmaticBidAdapter.js
@@ -671,6 +671,7 @@ function _handleEids(payload, validBidRequests) {
     _addExternalUserId(eids, utils.deepAccess(bidRequest, `userId.lipb.lipbid`), 'liveintent.com', 1);
     _addExternalUserId(eids, utils.deepAccess(bidRequest, `userId.parrableid`), 'parrable.com', 1);
     _addExternalUserId(eids, utils.deepAccess(bidRequest, `userId.britepoolid`), 'britepool.com', 1);
+    _addExternalUserId(eids, utils.deepAccess(bidRequest, `userId.netId`), 'netid.de', 1);
   }
   if (eids.length > 0) {
     payload.user.eids = eids;
diff --git a/test/spec/modules/pubmaticBidAdapter_spec.js b/test/spec/modules/pubmaticBidAdapter_spec.js
index 5c2f1f76b2e..75c0beed995 100644
--- a/test/spec/modules/pubmaticBidAdapter_spec.js
+++ b/test/spec/modules/pubmaticBidAdapter_spec.js
@@ -1856,6 +1856,42 @@ describe('PubMatic adapter', function () {
             expect(data.user.eids).to.equal(undefined);
           });
         });
+
+        describe('NetId', function() {
+          it('send the NetId if it is present', function() {
+            bidRequests[0].userId = {};
+            bidRequests[0].userId.netId = 'netid-user-id';
+            let request = spec.buildRequests(bidRequests, {});
+            let data = JSON.parse(request.data);
+            expect(data.user.eids).to.deep.equal([{
+              'source': 'netid.de',
+              'uids': [{
+                'id': 'netid-user-id',
+                'atype': 1
+              }]
+            }]);
+          });
+
+          it('do not pass if not string', function() {
+            bidRequests[0].userId = {};
+            bidRequests[0].userId.netId = 1;
+            let request = spec.buildRequests(bidRequests, {});
+            let data = JSON.parse(request.data);
+            expect(data.user.eids).to.equal(undefined);
+            bidRequests[0].userId.netId = [];
+            request = spec.buildRequests(bidRequests, {});
+            data = JSON.parse(request.data);
+            expect(data.user.eids).to.equal(undefined);
+            bidRequests[0].userId.netId = null;
+            request = spec.buildRequests(bidRequests, {});
+            data = JSON.parse(request.data);
+            expect(data.user.eids).to.equal(undefined);
+            bidRequests[0].userId.netId = {};
+            request = spec.buildRequests(bidRequests, {});
+            data = JSON.parse(request.data);
+            expect(data.user.eids).to.equal(undefined);
+          });
+        });
       });
 
       it('Request params check for video ad', function () {