Steve Bruce's United broke their top flight duck with a 1-0 win at Spurs live on Sky Sports.
Some resolute defending ensured the Magpies got three points but they also got a bit lucky late on.
Harry Kane was awkwardly challenged by Jamaal Lascelles in the area and despite VAR checks it was NOT given as a penalty, despite looking a clear infringement.
"You don't come to places like Tottenham and get results without a bit of luck," said Dummett.
The hilarious reason Newcastle United goalkeeper Nick Pope went viral on Twitter following Burger King tweet
Newcastle United player ratings: 'Strong' Sven Botman outshone by 'man of the moment'
Newcastle United transfer target confirms move ahead of official announcement
Newcastle United and Everton plot ‘£30m’ striker raid, Toon midfielder ‘expected to depart’
‘Data experts’ predict clear favourite in Newcastle United’s clash with Brighton and deliver Leeds United, Everton and Manchester United verdicts
"We had to work hard as a team and show discipline. Everyone has worked hard.
"We had to graft all game to make it possible.
"Credit to everyone, the players, the manager."
Newcastle United take on Leicester City in the League Cup next at St James’s Park on Wednesday.