WP site - can't browse from home (redirect to parkingcrew page), OK from mobile data/work - Home DNS issue?

Sorry if this is the wrong place to post.

Basically as per title. Just trying to set up a WP site to try get my head around hosting/website design and such.

Domain provided by Octopoly when they ran their promotion, hosted by Siteground.

Have pointed my nameservers to SG and installed WP.

If I browse through my phone via mobile data, or from my work pc onto the site, I access the page just fine.

If I hop onto home wifi or use my wired desktop to browse site, I get the following:

"sitename

2017 Copyright. All Rights Reserved. The Sponsored Listings displayed above are served automatically by a third party. Neither the service provider nor the domain owner maintain any relationship with the advertisers. In case of trademark issues please contact the domain owner directly (contact information can be found in whois)."

The privacy policy link from this brings me to parkingcrew.net which a quick google may suggest a domain hijack but could it be my home DNS settings since site is accessible otherwise.

Have tried google dns and manually setting my router to use the 2Degrees DNS instead of auto and no go.

Any ideas?