Just had a Pop Up from " BT " offering a free Samsung S20 . Definite SCAM !
Yes it's a scam, BT wouldn't offer prizes this way.
It's a reverse DNS lookup that identifies the IP used as a range belonging to whichever provider you're with, to make it seem genuine.
@footballtartan it's a pop up advert which often appear on advert heavy web pages. They're a result of something on the site being highjacked and are normally quite prevalent on sites operated by Reach Media PLC. It's not an issue with your connection etc, it's purely down to the website