diff --git a/plugins/catalog/api-report-alpha.md b/plugins/catalog/api-report-alpha.md
index a62b047c4c..f79d65394a 100644
--- a/plugins/catalog/api-report-alpha.md
+++ b/plugins/catalog/api-report-alpha.md
@@ -85,6 +85,8 @@ export const catalogTranslationRef: TranslationRef<
     readonly 'hasResourcesCard.emptyMessage': 'No resource is part of this system';
     readonly 'hasSubcomponentsCard.title': 'Has subcomponents';
     readonly 'hasSubcomponentsCard.emptyMessage': 'No subcomponent is part of this component';
+    readonly 'hasSubdomainsCard.title': 'Has subdomains';
+    readonly 'hasSubdomainsCard.emptyMessage': 'No subdomain is part of this domain';
     readonly 'hasSystemsCard.title': 'Has systems';
     readonly 'hasSystemsCard.emptyMessage': 'No system is part of this domain';
     readonly 'relatedEntitiesCard.emptyHelpLinkTitle': 'Learn how to change this.';
diff --git a/plugins/catalog/api-report.md b/plugins/catalog/api-report.md
index c1fb52fb94..95333a6451 100644
--- a/plugins/catalog/api-report.md
+++ b/plugins/catalog/api-report.md
@@ -370,6 +370,11 @@ export const EntityHasSubcomponentsCard: (
   props: HasSubcomponentsCardProps,
 ) => JSX.Element;
 
+// @public (undocumented)
+export const EntityHasSubdomainsCard: (
+  props: HasSubdomainsCardProps,
+) => JSX.Element;
+
 // @public (undocumented)
 export const EntityHasSystemsCard: (props: HasSystemsCardProps) => JSX.Element;
 
@@ -551,6 +556,16 @@ export interface HasSubcomponentsCardProps {
   variant?: InfoCardVariants;
 }
 
+// @public (undocumented)
+export interface HasSubdomainsCardProps {
+  // (undocumented)
+  tableOptions?: TableOptions;
+  // (undocumented)
+  title?: string;
+  // (undocumented)
+  variant?: InfoCardVariants;
+}
+
 // @public (undocumented)
 export interface HasSystemsCardProps {
   // (undocumented)