diff --git a/neutron/services/externaldns/drivers/designate/driver.py b/neutron/services/externaldns/drivers/designate/driver.py
index ff7bf16662f..210ef7ab465 100644
--- a/neutron/services/externaldns/drivers/designate/driver.py
+++ b/neutron/services/externaldns/drivers/designate/driver.py
@@ -144,6 +144,8 @@ class Designate(driver.ExternalDNSService):
                               ' assuming it exists.',
                               in_addr_zone_name)
                     pass
+                except d_exc.OverQuota:
+                    raise dns_exc.ExternalDNSOverQuota(resource='zone')
                 designate_admin.recordsets.create(in_addr_zone_name,
                                                   in_addr_name, 'PTR',
                                                   [recordset_name])