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HTTP/2 Web Server Online Tester

Execution date: Mon, 19 Aug 2019 09:07:42 GMT, URL: twitter.com/, encryption: ALPN enabled, test type: Query both.

IPv4 ALPN enabled test results

OK
104.244.42.1
HTTP/2 200
cache-control: no-cache, no-store, must-revalidate, pre-check=0, post-check=0
content-length: 266919
content-type: text/html;charset=utf-8
date: Mon, 19 Aug 2019 09:07:42 GMT
expires: Tue, 31 Mar 1981 05:00:00 GMT
last-modified: Mon, 19 Aug 2019 09:07:42 GMT
pragma: no-cache
server: tsa_o
set-cookie: fm=0; Max-Age=0; Expires=Mon, 19 Aug 2019 09:07:42 GMT; Path=/; Domain=.twitter.com; Secure; HTTPOnly
set-cookie: _twitter_sess=BAh7CSIKZmxhc2hJQzonQWN0aW9uQ29udHJvbGxlcjo6Rmxhc2g6OkZsYXNo%250ASGFzaHsABjoKQHVzZWR7ADoPY3JlYXRlZF9hdGwrCFTVIalsAToMY3NyZl9p%250AZCIlNDFmZmMwZDgyODVkNzc5OWRhZDM0NTc3NDkxMmI3YWM6B2lkIiU3Mzhh%250AZThhNWRhYjk2NDI5ZmIxYmQwYjQwYWQ2NGQwMQ%253D%253D--f7dc2b4a155ca3cdb4bee35cc060cfe6eab64367; Path=/; Domain=.twitter.com; Secure; HTTPOnly
set-cookie: personalization_id="v1_DK/2QixqYXQD3sAzqZ6+7w=="; Max-Age=63072000; Expires=Wed, 18 Aug 2021 09:07:42 GMT; Path=/; Domain=.twitter.com
set-cookie: guest_id=v1%3A156620566254712416; Max-Age=63072000; Expires=Wed, 18 Aug 2021 09:07:42 GMT; Path=/; Domain=.twitter.com
set-cookie: ct0=489d48bf44f196737cfaca9ead2e24aa; Max-Age=21600; Expires=Mon, 19 Aug 2019 15:07:42 GMT; Path=/; Domain=.twitter.com; Secure
status: 200 OK
strict-transport-security: max-age=631138519
x-connection-hash: b5457b23253a37dee984f4838d459763
x-content-type-options: nosniff
x-frame-options: DENY
x-response-time: 123
x-transaction: 0098c3ea00ec72a8
x-twitter-response-tags: BouncerCompliant
x-ua-compatible: IE=edge,chrome=1
x-xss-protection: 0

IPv6 ALPN enabled test results

Fail
Invalid hostname / IP address