diff --git a/ranges/fetchers/azure.go b/ranges/fetchers/azure.go
index 914e4f7..8df9959 100644
--- a/ranges/fetchers/azure.go
+++ b/ranges/fetchers/azure.go
@@ -35,7 +35,7 @@ func (f AzurePublicCloudFetcher) FetchIPRanges() ([]string, error) {
 	}
 
 	// Step 2: Extract the JSON download URL using a regex
-	urlRegex := regexp.MustCompile(`https://download\.microsoft\.com/.*?\.json`)
+	urlRegex := regexp.MustCompile(`^https://download\.microsoft\.com/.*?\.json$`)
 	matches := urlRegex.FindStringSubmatch(string(body))
 	if len(matches) == 0 {
 		return nil, fmt.Errorf("failed to find JSON download URL in Azure download page")