diff --git a/modules/tripleliftBidAdapter.js b/modules/tripleliftBidAdapter.js
index 3ce44d067bf..8012a4a8051 100644
--- a/modules/tripleliftBidAdapter.js
+++ b/modules/tripleliftBidAdapter.js
@@ -436,6 +436,10 @@ function _buildResponseObject(bidderRequest, bid) {
     if (bid.tl_source && bid.tl_source == 'tlx') {
       bidResponse.meta.mediaType = 'native';
     }
+
+    if (creativeId) {
+      bidResponse.meta.networkId = creativeId.slice(0, creativeId.indexOf('_'));
+    }
   };
   return bidResponse;
 }
diff --git a/test/spec/modules/tripleliftBidAdapter_spec.js b/test/spec/modules/tripleliftBidAdapter_spec.js
index a20719d89e5..221ffb8371f 100644
--- a/test/spec/modules/tripleliftBidAdapter_spec.js
+++ b/test/spec/modules/tripleliftBidAdapter_spec.js
@@ -1437,6 +1437,13 @@ describe('triplelift adapter', function () {
       expect(result[0].meta.advertiserDomains[1]).to.equal('internetalerts.org');
       expect(result[1].meta).to.not.have.key('advertiserDomains');
     });
+
+    it('should include networkId in the meta field if available', function () {
+      let result = tripleliftAdapterSpec.interpretResponse(response, {bidderRequest});
+      expect(result[1].meta.networkId).to.equal('10092');
+      expect(result[2].meta.networkId).to.equal('5989');
+      expect(result[3].meta.networkId).to.equal('5989');
+    });
   });
 
   describe('getUserSyncs', function() {