Forums › Forums › White Hat SEO › Do subdomains affect root domains? White Hat SEO Do subdomains affect root domains? Posted by seohelper on October 6, 2020 at 4:32 pm Say a subdomain sub.example.com has a load of bad signals (bad links, 404s, poor content, etc.) would it affect the SEO of the root domain example.com? jontyboshoff replied 3 years, 6 months ago 1 Member · 2 Replies 2 Replies emuwannabe Guest October 6, 2020 at 5:36 pm It’s not supposed to. Subs area consisted their own sites jontyboshoff Guest October 7, 2020 at 12:11 am No. But it can work the other way around (root affects sub). Especially if the subdomain is very similar to the root domain. Log In to Reply Log in to reply. Log In to Reply Start of Discussion 0 of 0 replies June 2018 Now