=== HTTP-Code: 200 ===

Response headers
================
HTTP/1.1 200 OK
Date: Tue, 03 Jan 2017 17:15:45 GMT
Content-Type: text/html; charset=UTF-8
Connection: close
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Last-Modified: Tue, 03 Jan 2017 10:56:51 GMT
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Request headers
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HEAD /wiki/SMART_(Projektmanagement) HTTP/1.1
User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)
Host: de.wikipedia.org
Accept: */*
Referer: https://mompreneurs.de
Connection: close


Link ist valide.