I don't know what the right word is but if I search for my kw it shows up at the same spot on all the browsers even after I have deleted history, cashe, cookies etc. Even if I try on a different computer behind the same router it shows the same rankings for a page. But if I check my ranking with a SERP tools it shows that my page is not ranked even. If I ask my friend who is behind some other router to check it then he also doesn't see my page ranking in google.
How can I delete the router or whatever history/cache/cookies to get up to date info?