Prophet Hud - 11:109 Have no doubt about those whom they serve. They serve just as their forefathers served before. We will pay them their portion in full.
Who are the previous ones?
The Letter Qaf/50:12 The people of Noah, the people of Res and Thamud had disbelieved before them.
The Letter Qaf/50:13 Ad, Pharaoh and the brothers of Lot.
The Letter Qaf/50:14 The people of Ayka and the people of Tubba´. They all denied the messengers. So My threat came true.

The Arabic Letter Sad/38:12 Before them were the people of Noah and the people of Ad and Pharaoh, the owner of the pyramids.
The Arabic Letter Sad/38:13 So did Thamud, the people of Lot and the Aykelites. They were parties.

The Pilgrimage/22:42 If they belie you, so did the people of Noah, Ad and Thamud before them
The Pilgrimage/22:43 And the people of Abraham, and the people of Lot
The Pilgrimage/22:44 And the inhabitants of Median. Even Moses was denied. I gave the disbelievers a respite and then I called them to account; how is it that they do not recognize Me!

The Repentance/9:70 Did not the news of those before them reach them, like the people of Noah, and the people of Ad, Thamud, and the people of Abraham, and the inhabitants of Median, and the inhabitants of the overturned countries (Sodom and Gomorrah)? Their messengers had gone to them with clear proofs. Allah was not oppressing them, but they were oppressing themselves.