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Universal links stops working randomly, When i tried this curl API test i found strange result Case 1: When the curl test return association JSON response it works fine Case 2: Sometimes the curl test fails and association JSON response is not returned for the same log is below: (Actual domain is replaced by mydomain.com) Https enabled No redirections Association added in .well-known folder Works randomly without any change in sever IP added as exception in blacklist Applebot added as: User-agent: Applebot Allow: /.well-known/ Curl API Test Response: Using Terminal: curl -v https://app-site-association.cdn-apple.com/a/v1/mydomain.com *  Trying 8.241.155.124:443... * Connected to app-site-association.cdn-apple.com (8.241.155.124) port 443 (#0) * ALPN, offering h2 * ALPN, offering http/1.1 * successfully set certificate verify locations: * CAfile: /etc/ssl/cert.pem * CApath: none * (304) (OUT), TLS handshake, Client hello (1): * (304) (IN), TLS handshake, Server hello (2): * (304) (IN), TLS handshake, Unknown (8): * (304) (IN), TLS handshake, Certificate (11): * (304) (IN), TLS handshake, CERT verify (15): * (304) (IN), TLS handshake, Finished (20): * (304) (OUT), TLS handshake, Finished (20): * SSL connection using TLSv1.3 / AEAD-AES256-GCM-SHA384 * ALPN, server accepted to use http/1.1 * Server certificate: * subject: CN=app-site-association.cdn-apple.com; OU=management:idms.group.5707244; O=Apple Inc.; ST=California; C=US * start date: Sep 1 20:44:29 2021 GMT * expire date: Oct 1 20:44:28 2022 GMT * subjectAltName: host "app-site-association.cdn-apple.com" matched cert's "app-site-association.cdn-apple.com" * issuer: CN=Apple Public Server RSA CA 12 - G1; O=Apple Inc.; ST=California; C=US * SSL certificate verify ok. > GET /a/v1/mydomain.com HTTP/1.1 > Host: app-site-association.cdn-apple.com > User-Agent: curl/7.79.1 > Accept: */* >  * Mark bundle as not supporting multiuse < HTTP/1.1 404 Not Found < Date: Tue, 28 Jun 2022 06:51:03 GMT < Content-Type: text/plain; charset=utf-8 < Content-Length: 10 < Connection: keep-alive < Apple-Failure-Details: {"cause":"context deadline exceeded (Client.Timeout exceeded while awaiting headers)"} < Apple-Failure-Reason: SWCERR00301 Timeout < Apple-From: https://mydomain.com/.well-known/apple-app-site-association < Apple-Try-Direct: true < Cache-Control: public, max-age=1800 < Expires: Tue, 28 Jun 2022 06:51:23 GMT < X-Cache: MISS < CDNUUID: 2478cf3a-1d35-4870-ae61-0ad342ef8adf-1481196180 < CDN-Server: lumn < Age: 1238 <  Not Found * Connection #0 to host app-site-association.cdn-apple.com left intact Please support, Urgent Help Required.