diff --git a/linode_api4/objects/nodebalancer.py b/linode_api4/objects/nodebalancer.py
index 6fa2ee797..371eeed9b 100644
--- a/linode_api4/objects/nodebalancer.py
+++ b/linode_api4/objects/nodebalancer.py
@@ -269,6 +269,7 @@ class NodeBalancer(Base):
         "locks": Property(unordered=True),
         "type": Property(),
         "backend_connectivity": Property(),
+        "backend_ipv6_prefix": Property(),
     }
 
     # create derived objects
diff --git a/test/fixtures/linode_instances_123_nodebalancers.json b/test/fixtures/linode_instances_123_nodebalancers.json
index a291e4fc2..fc92c79fb 100644
--- a/test/fixtures/linode_instances_123_nodebalancers.json
+++ b/test/fixtures/linode_instances_123_nodebalancers.json
@@ -10,6 +10,7 @@
       "label": "balancer12345",
       "type": "premium",
       "backend_connectivity": "ipv6",
+      "backend_ipv6_prefix": "2600:3c22:1:20:0:3039::/96",
       "region": "us-east",
       "tags": [
         "example tag",
diff --git a/test/fixtures/nodebalancers.json b/test/fixtures/nodebalancers.json
index 2175096b6..487943e74 100644
--- a/test/fixtures/nodebalancers.json
+++ b/test/fixtures/nodebalancers.json
@@ -13,7 +13,8 @@
       "tags": ["something"],
       "locks": ["cannot_delete_with_subresources"],
       "type": "premium",
-      "backend_connectivity": "ipv6"
+      "backend_connectivity": "ipv6",
+      "backend_ipv6_prefix": "2600:3c22:1:20:0:3039::/96"
     },
     {
       "created": "2018-01-01T00:01:01",
@@ -28,7 +29,8 @@
       "tags": [],
       "locks": [],
       "type": "premium",
-      "backend_connectivity": "ipv6"
+      "backend_connectivity": "ipv6",
+      "backend_ipv6_prefix": null
     }
   ],
   "results": 2,
diff --git a/test/fixtures/nodebalancers_123456.json b/test/fixtures/nodebalancers_123456.json
index 3261ea46b..fbec0bec7 100644
--- a/test/fixtures/nodebalancers_123456.json
+++ b/test/fixtures/nodebalancers_123456.json
@@ -15,5 +15,6 @@
     "cannot_delete_with_subresources"
   ],
   "type": "premium",
-  "backend_connectivity": "ipv6"
+  "backend_connectivity": "ipv6",
+  "backend_ipv6_prefix": "2600:3c22:1:20:0:3039::/96"
 }
diff --git a/test/integration/models/nodebalancer/test_nodebalancer.py b/test/integration/models/nodebalancer/test_nodebalancer.py
index 102e19cbf..97e76e88f 100644
--- a/test/integration/models/nodebalancer/test_nodebalancer.py
+++ b/test/integration/models/nodebalancer/test_nodebalancer.py
@@ -115,6 +115,9 @@ def test_create_nb(test_linode_client, e2e_test_firewall):
     assert 5 == nb.client_udp_sess_throttle
     assert nb.type == "premium"
     assert nb.backend_connectivity == "ipv6"
+    assert nb.backend_ipv6_prefix is None or isinstance(
+        nb.backend_ipv6_prefix, str
+    )
 
     nb.delete()
 
diff --git a/test/unit/linode_client_test.py b/test/unit/linode_client_test.py
index 1d154de29..78a542210 100644
--- a/test/unit/linode_client_test.py
+++ b/test/unit/linode_client_test.py
@@ -1601,6 +1601,7 @@ def test_create_with_type_and_backend_connectivity(self):
                 "label": "my-premium-nb",
                 "type": "premium",
                 "backend_connectivity": "ipv6",
+                "backend_ipv6_prefix": "2600:3c22:1:20:0:3039::/96",
                 "region": "us-east",
             }
         ) as m:
@@ -1634,6 +1635,10 @@ def test_create_with_type_and_backend_connectivity(self):
             self.assertEqual(nb.id, 1234)
             self.assertEqual(nb.type, "premium")
             self.assertEqual(nb.backend_connectivity, "ipv6")
+            self.assertEqual(
+                nb.backend_ipv6_prefix, "2600:3c22:1:20:0:3039::/96"
+            )
+            self.assertNotIn("backend_ipv6_prefix", m.call_data)
 
     def test_create_with_vpc_backend_connectivity(self):
         """
diff --git a/test/unit/objects/nodebalancers_test.py b/test/unit/objects/nodebalancers_test.py
index a3e6ef166..ebc65607d 100644
--- a/test/unit/objects/nodebalancers_test.py
+++ b/test/unit/objects/nodebalancers_test.py
@@ -188,6 +188,7 @@ def test_get(self):
         self.assertEqual(nb._populated, True)
         self.assertEqual(nb.type, "premium")
         self.assertEqual(nb.backend_connectivity, "ipv6")
+        self.assertEqual(nb.backend_ipv6_prefix, "2600:3c22:1:20:0:3039::/96")
 
     def test_update(self):
         """
@@ -244,6 +245,7 @@ def test_type_and_backend_connectivity_not_in_put(self):
             self.assertEqual(m.call_url, "/nodebalancers/123456")
             self.assertNotIn("type", m.call_data)
             self.assertNotIn("backend_connectivity", m.call_data)
+            self.assertNotIn("backend_ipv6_prefix", m.call_data)
             self.assertEqual(m.call_data["label"], "new-label")
 
     def test_firewalls(self):
@@ -258,6 +260,13 @@ def test_firewalls(self):
             self.assertEqual(m.call_url, firewalls_url)
             self.assertEqual(len(result), 1)
 
+    def test_backend_ipv6_prefix_null(self):
+        """
+        Test that a NodeBalancer can have a null backend IPv6 prefix.
+        """
+        nb = NodeBalancer(self.client, 123457)
+        self.assertIsNone(nb.backend_ipv6_prefix)
+
     def test_config_rebuild(self):
         """
         Test that you can rebuild the cofig of a node balancer.