Al-Ansar are mainly in the gulf and other Arab countries. However other people which only have the name "Ansari" are different to the tribe Al-Ansar (الاوس و الخزرج). Some of the people claim to be from Al-Ansar but they are not, they just have the name "Ansari" in their name and so they try to blend in with Al-Ansar (الاوس و الخزرج). We realize that people with surname (Al-Ansari) are all Arab and mainly from the gulf regions. And people who only have the name "Ansari" in their name are not from Arab countries. This is because Al-Ansar (الاوس و الخزرج) are not related to these people who only have the name "Ansari" in their name.
Al-Ansari (الأنصاري) surname is used in the Middle East and other Arab nations. The surname Al-Ansari originates from Al-Ansar (الأنصار), the Medinan people that helped Islamic prophet Muhammad when he migrated from Mecca to Medina. The literal meaning of Ansar is "supporters
The surname Al-Ansari is used among Arabs. Mostly in the gulf and other Arab nations. Al-Ansar Tribe (الاوس و الخزرج) has also other family names that are from either الاوس or الخزرج which are called Al-Ansar. Al-Ansar are and is one of the most old Arab tribes in the history of the Arabic tribes.
On the other hand, the name "Ansari" can be used in Iran and south-Asian countries but is different to the surname Al-Ansari (الأنصاري) as the people who have just the name Ansari in their name are not a tribe and are not related to each other in any way of form, and are not related to the tribe Al-Ansar (الاوس و الخزرج).
This is different to the tribe Al-Ansar (الاوس و الخزرج) which do NOT live and are NOT from either Iran or south Asian countries or any other non-Arab countries. All of Al-Ansar are related to each other as الاوس و الخزرج are cousins and are from one grandfather.
And people who have the name "Ansari" in their name are not related to each other and are not related to the tribe Al-Ansar (الاوس و الخزرج).
Mostly people who only have Ansari in their name not Al-Ansari , live in non-Arab countries and are from non-Arab countries. And people from the tribe Al-Ansari (الأنصاري) live in and are from Arab countries mostly the Middle East.
The name "Ansari" can be seen used as a name in Pakistan, northern India and Bangladesh. However it is most definitely not used as a surname and these people who have The name Ansari in their name are not a tribe in Pakistan, northern India or Bangladesh and are most often not related to the tribe Al-Ansar (الاوس و الخزرج) .
Al-Ansar (الاوس و الخزرج ) are different from the people that only have the name Ansari in their name in culture, tradition and nationality.