=== HTTP code : 200 ===

Response headers
================
HTTP/1.1 301 Moved Permanently
Server: nginx
Date: Tue, 16 Jul 2019 17:31:07 GMT
Content-Type: text/html; charset=iso-8859-1
Content-Length: 225
X-Content-Type-Options: nosniff
Location: https://bart.gov/
Cache-Control: max-age=1209600
Expires: Tue, 30 Jul 2019 17:31:07 GMT
X-Request-ID: v-7e8c1616-a7ef-11e9-8b42-f7e9cb5dec27
Age: 1062403
Via: varnish
X-Cache: HIT
X-Cache-Hits: 81842
Connection: close

HTTP/1.1 301 Moved Permanently
Server: nginx
Date: Mon, 29 Jul 2019 00:37:51 GMT
Content-Type: text/html; charset=iso-8859-1
Content-Length: 229
Connection: close
X-Content-Type-Options: nosniff
Location: https://www.bart.gov/
Cache-Control: max-age=1209600
Expires: Tue, 30 Jul 2019 17:31:14 GMT
X-Request-ID: v-82f87b4a-a7ef-11e9-bad7-d3d583440f48
Age: 1062396
Via: varnish
X-Cache: HIT
X-Cache-Hits: 55157

HTTP/1.1 200 OK
Age: 0
Cache-Control: no-cache, must-revalidate
Content-Encoding: gzip
Content-Language: en
Content-Type: text/html; charset=utf-8
Date: Mon, 29 Jul 2019 00:37:52 GMT
Expires: Sun, 19 Nov 1978 05:00:00 GMT
Link: &lt;https://www.bart.gov/&gt;; rel=&quot;canonical&quot;,&lt;https://www.bart.gov/&gt;; rel=&quot;shortlink&quot;
Server: nginx
Vary: Accept-Encoding
Via: varnish
X-AH-Environment: prod
X-Cache: MISS
X-Content-Type-Options: nosniff
X-Frame-Options: SAMEORIGIN
X-Generator: Drupal 7 (https://www.drupal.org)
X-Request-ID: v-193028da-b199-11e9-b51b-f35ce878e6a4
X-XSS-Protection: 1
Connection: Close

Request headers
================
HEAD / HTTP/1.1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.102 Safari/537.36
Host: www.bart.gov
Accept: */*
Referer: https://ssdp.org
Connection: close


Link is valid.