diff --git a/.changeset/cdn-preconnect-bare-origin.md b/.changeset/cdn-preconnect-bare-origin.md
new file mode 100644
index 000000000..f6b0fd9b4
--- /dev/null
+++ b/.changeset/cdn-preconnect-bare-origin.md
@@ -0,0 +1,5 @@
+---
+'@shopify/theme-check-common': patch
+---
+
+Report `CdnPreconnect` for `href="https://cdn.shopify.com"` and `href="//cdn.shopify.com"` without a trailing path, and stop reporting hosts that only contain `cdn.shopify.com` in their path.
diff --git a/packages/theme-check-common/src/checks/cdn-preconnect/index.ts b/packages/theme-check-common/src/checks/cdn-preconnect/index.ts
index 3165fc9f1..a336c429e 100644
--- a/packages/theme-check-common/src/checks/cdn-preconnect/index.ts
+++ b/packages/theme-check-common/src/checks/cdn-preconnect/index.ts
@@ -29,7 +29,10 @@ export const CdnPreconnect: LiquidCheckDefinition = {
 
       const isShopifyCdn = node.attributes
         .filter(isValuedHtmlAttribute)
-        .some((attr) => isAttr(attr, 'href') && valueIncludes(attr, '.+cdn.shopify.com.+'));
+        .some(
+          (attr) =>
+            isAttr(attr, 'href') && valueIncludes(attr, '(https?:)?//cdn\\.shopify\\.com(/\\S*)?'),
+        );
 
       if (!isShopifyCdn) return;
 
diff --git a/specs/checks/cdn-preconnect.yml b/specs/checks/cdn-preconnect.yml
index a06810b8f..7297876d8 100644
--- a/specs/checks/cdn-preconnect.yml
+++ b/specs/checks/cdn-preconnect.yml
@@ -19,6 +19,25 @@ cases:
         message: Preconnecting to cdn.shopify.com is unnecessary and can lead to worse performance
         start: [0, 0]
         highlight: '<link rel="preconnect" href="https://cdn.shopify.com/" crossorigin/>'
+  - name: should report preconnect to cdn.shopify.com without a trailing slash
+    files:
+      file.liquid: |
+        <link rel="preconnect" href="https://cdn.shopify.com" crossorigin>
+        <link rel="preconnect" href="//cdn.shopify.com">
+    offenses:
+      - file: file.liquid
+        message: Preconnecting to cdn.shopify.com is unnecessary and can lead to worse performance
+        start: [0, 0]
+        highlight: '<link rel="preconnect" href="https://cdn.shopify.com" crossorigin>'
+      - file: file.liquid
+        message: Preconnecting to cdn.shopify.com is unnecessary and can lead to worse performance
+        start: [1, 0]
+        highlight: '<link rel="preconnect" href="//cdn.shopify.com">'
+  - name: should not report preconnect to other hosts
+    files:
+      file.liquid: |
+        <link rel="preconnect" href="https://fonts.shopifycdn.com" crossorigin>
+        <link rel="preconnect" href="https://example.com/cdn.shopify.com.html">
   - name: should not report other link types
     files:
       file.liquid: |