apple-app-site-association file 404 problem

We put the apple-app-site-association file at https://ourdomain.com.tr/.well-known/apple-app-site-association. When we send a request to url, we get 200 response code every time and we can see the file. But sometimes when we try to access https://app-site-association.cdn-apple.com/a/v1/ourdomain.com.tr url with browser or CMD tool, we are facing with 404 response code. There isn't any ip adress filter in our systems and we tried using vpn for sending same request from different locations(america and europe) but nothing changed. In addition, can anyone provide the ip list of apple cdn servers to check the F5 Load balancer WAF logs?

CMD output:

C:\Users\Name>curl -Lv https://app-site-association.cdn-apple.com/a/v1/ourdomain.com.tr

  • Host app-site-association.cdn-apple.com:443 was resolved.
  • IPv6: (none)
  • IPv4: 17.253.122.197, 17.253.15.210, 17.253.122.196, 17.253.107.201, 17.253.57.203, 17.253.15.198, 17.253.57.200
  • Trying 17.253.122.197:443...
  • Connected to app-site-association.cdn-apple.com (17.253.122.197) port 443
  • schannel: disabled automatic use of client certificate
  • ALPN: curl offers http/1.1
  • ALPN: server accepted http/1.1
  • using HTTP/1.x

GET /a/v1/ourdomain.com HTTP/1.1 Host: app-site-association.cdn-apple.com User-Agent: curl/8.9.1 Accept: /

  • Request completely sent off
  • schannel: remote party requests renegotiation
  • schannel: renegotiating SSL/TLS connection
  • schannel: SSL/TLS connection renegotiated

< HTTP/1.1 404 Not Found < Apple-Failure-Details: {"cause":"context deadline exceeded (Client.Timeout exceeded while awaiting headers)"} < Apple-Failure-Reason: SWCERR00301 Timeout < Apple-From: https://ourdomain.com.tr/.well-known/apple-app-site-association < Apple-Try-Direct: true < Cache-Control: max-age=3600,public < Content-Length: 10 < Content-Type: text/plain; charset=utf-8 < Date: Mon, 14 Apr 2025 12:52:04 GMT < Expires: Mon, 14 Apr 2025 12:52:14 GMT < Age: 1770 < Via: http/1.1 uklon5-vp-vst-004.ts.apple.com (acdn/268.14469), https/1.1 uklon5-vp-vfe-002.ts.apple.com (acdn/268.14469), http/1.1 frmrs1-edge-mx-008.ts.apple.com (acdn/268.14469), http/1.1 frmrs1-edge-fx-005.ts.apple.com (acdn/268.14469) < X-Cache: hit-fresh, hit-stale, hit-fresh, hit-fresh < CDNUUID: 9e72cf99-1503-4644-9ea3-173328a25c94-31496306226 < Connection: keep-alive < Not Found

  • Connection #0 to host app-site-association.cdn-apple.com left intact

Thanks for the post, can I take a look of the issue, can you please provide the URL to the AASA file?

It appears that you did not provide your correct domain. If you are concerned about security and privacy, you can submit your AASA link privately to me.

I'd like you to submit a code-level support request so we can discuss this further privately. When you create the request, indicate that you were referred by me at Apple and make sure to include a link to this thread.

In the absence of access to your AASA file by Apple servers, it indicates that your server is not accepting all agents or IP address requests.

Albert Pascual
  Worldwide Developer Relations.

Hi @DTS Engineer, we are going to submit code-level support request but in meantime we would like to ask ip information of apple cdn servers. We need this information to look up logs on our end.

Replied to you on the code-level support.

Albert Pascual
  Worldwide Developer Relations.

apple-app-site-association file 404 problem
 
 
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