diff --git a/Library/Homebrew/utils/curl.rb b/Library/Homebrew/utils/curl.rb
index 59be98dd49c6b..e3b4cc24dbe51 100644
--- a/Library/Homebrew/utils/curl.rb
+++ b/Library/Homebrew/utils/curl.rb
@@ -94,7 +94,7 @@ def curl_check_http_content(url, user_agents: [:default], check_content: false,
   user_agents.each do |ua|
     details = curl_http_content_headers_and_checksum(url, hash_needed: hash_needed, user_agent: ua)
     user_agent = ua
-    break if details[:status].to_s.start_with?("2")
+    break if http_status_ok?(details[:status])
   end
 
   unless details[:status]
@@ -104,7 +104,7 @@ def curl_check_http_content(url, user_agents: [:default], check_content: false,
     return "The URL #{url} is not reachable"
   end
 
-  unless details[:status].start_with? "2"
+  unless http_status_ok?(details[:status])
     return "The URL #{url} is not reachable (HTTP status code #{details[:status]})"
   end
 
@@ -119,8 +119,8 @@ def curl_check_http_content(url, user_agents: [:default], check_content: false,
   secure_details =
     curl_http_content_headers_and_checksum(secure_url, hash_needed: true, user_agent: user_agent)
 
-  if !details[:status].to_s.start_with?("2") ||
-     !secure_details[:status].to_s.start_with?("2")
+  if !http_status_ok?(details[:status]) ||
+     !http_status_ok?(secure_details[:status])
     return
   end
 
@@ -192,3 +192,7 @@ def curl_http_content_headers_and_checksum(url, hash_needed: false, user_agent:
     file:           output,
   }
 end
+
+def http_status_ok?(status)
+  (100..299).cover?(status.to_i)
+end