diff --git a/roles/matrix-dynamic-dns/defaults/main.yml b/roles/matrix-dynamic-dns/defaults/main.yml
index cb17c90c..0d34ccea 100644
--- a/roles/matrix-dynamic-dns/defaults/main.yml
+++ b/roles/matrix-dynamic-dns/defaults/main.yml
@@ -27,6 +27,17 @@ matrix_dynamic_dns_base_path: "{{ matrix_base_data_path }}/dynamic-dns"
 matrix_dynamic_dns_config_path: "{{ matrix_dynamic_dns_base_path }}/config"
 matrix_dynamic_dns_docker_src_files_path: "{{ matrix_dynamic_dns_base_path }}/docker-src"
 
+# Holds the configurations (the domains to update DNS for, the providers they use, etc.)
+#
+# Example:
+# matrix_dynamic_dns_domain_configurations:
+#   - provider: domains.google.com
+#     protocol: dyndn2
+#     username: XXXXXXXXXXXXXXXX
+#     password: XXXXXXXXXXXXXXXX
+#     domain: "{{ matrix_domain }}"
+matrix_dynamic_dns_domain_configurations: []
+
 # Config options
 matrix_dynamic_dns_additional_configuration_blocks: []
 matrix_dynamic_dns_use: "web"