547 No HTTP Response

The HTTP 547 No HTTP Response status code is an unofficial server error specific to Edgio, returned when the global POP fails to produce an HTTP response for a request forwarded from the edge POP.

Table of Contents

Usage

Edgio routes traffic through a two-tier architecture: edge POPs close to users handle initial request processing, then forward traffic to global POPs aggregating and routing requests toward the origin server.

A 547 response indicates the edge POP successfully forwarded the request to the global POP, but the global POP did not return an HTTP response. The connection between edge and global POP was established, distinguishing this from 546 Edgio Global POP TLS Error (TLS negotiation failure) and 548 Edgio Global POP DNS Resolution Error (hostname resolution failure).

Causes include the global POP process crashing before generating a response, the global POP dropping the connection mid-request, and internal routing failures within the Edgio infrastructure.

SEO impact

Search engines treat 547 responses as server errors. Persistent errors cause crawlers to reduce crawl frequency and eventually drop affected URLs from the index.

Example

A client request reaches the Edgio edge POP and is forwarded to the global POP. The global POP accepts the connection but fails to return an HTTP response.

Request

GET /products HTTP/1.1
Host: cdn.example.re
Accept: text/html

Response

HTTP/1.1 547 No HTTP Response
Date: Mon, 02 Mar 2026 10:50:00 GMT
Content-Type: text/html
Server: ECAcc

<html>
<head>
  <title>547 Global POP No HTTP Response</title>
</head>
<body>
<h1>547 Global POP No HTTP Response</h1>
<p>No response received from global POP</p>
</body>
</html>

How to fix

  • Retry the request after a short delay. The condition is typically transient and resolves as the Edgio platform recovers.
  • Check the Edgio status page for ongoing incidents affecting global POP availability.
  • Review the Edgio developer console for request traces showing where the request failed within the POP chain.
  • If the error persists across multiple requests or regions, contact Edgio support to investigate the specific global POP handling the traffic.

Takeaway

The 547 No HTTP Response status code is an unofficial error specific to Edgio, returned when the global POP fails to produce an HTTP response after accepting the connection from the edge POP. The condition is transient and typically resolves on retry.

See also

Last updated: March 6, 2026