The Messenger of Allah (ﷺ) appointed Dhat Irq as the place for putting on ihram for the people of Iraq.
Sunan Abi Dawud Book 11, Hadith 19
← Previous Hadith The Messenger of Allah (SWAS) appointed places for putting on Ihram and narrated the rest of the tradition to the same effect (as mentioned above).

One of them said and Yalamlam for the people of Yemen. The other narrator said Alamlam. These (places for Ihram) are appointed for these regions and for people of other regions who come to them intending to perform Hajj and `Umrah. The place where those who live nearer to Makkah should put on Ihram from where they start and so on up to the inhabitants of Makkah itself who put on Ihram in it. This is the version of Ibn Tawus.

Sunan Abi Dawud Book 11, Hadith 18 Next Hadith → The Messenger of Allah (ﷺ) appointed al-Aqiq as the place for putting on ihram for the people of East.

Sunan Abi Dawud Book 11, Hadith 20