javascript - Unauthorised domain name masking -


today noticed several domains using masking associate domain name content. e.g. “draughtmark.co.uk” , “recycleofficewaste.co.uk” (plus several others). can prevent , bots indexing content under domains (otherwise site penalised)?

i have since put in javascript , php function detect , redirect site. seems prevent people unknowingly browsing content on domain, don't know if in regards bots either requires referrer set or javascript file loaded.

use canonical urls in html no matter domain served under pages given proper credit being original. although designed deal duplicate content on website, changed work across domains republished works.


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