The Alla or śāsana system has been used extensively by the Pancha-Gauda

Pancha-Gauda

Pancha-Gauda and Pancha-Dravida are two chief divisions of Brahmins, as per the śloka from Rājatarangini of / Kalhana:कर्णाटकाश्च तैलंगा द्राविडा महाराष्ट्रकाः ,गुर्जराश्चेति पञ्चैव द्राविडा विन्ध्यदक्षिणे ||सारस्वताः कान्यकुब्जा गौडा उत्कलमैथिलाः,...

 Brahmin communities in north India. It refers to a further classification within the gotra

Gotra

In the Hindu society, the term Gotra broadly refers to people who are descendants in an unbroken male line from a common male ancestor. Panini defines gotra for grammatical purposes as apatyam pautraprabhrti gotram , which means "the word gotra denotes the progeny beginning with the son's son"...

 and gives information about the lineage or place of origin of a Brahmin

Brahmin

Brahmin Brahman, Brahma and Brahmin.Brahman, Brahmin and Brahma have different meanings. Brahman refers to the Supreme Self...

 family. Allas are also called śāsanas in Sanskrit.

History

Brahmins would be granted villages in Yagyas and disciples from various gotras would come and settle in these villages. As a result, many gotras were found in one village. Such multi-gotra villages came to be called śāsanas (because disciples lived in the śāsana / control of gurus). Often one śāsana is found in more than one gotra, and more than one śāsana is found in a śāsana. Each śāsana has a distinct name, signifying the name of some ancient village.[7] Some gotras have a large number of śāsanas associated with them .

Gotras and Allas

Gotras with highest number of śāsanas associated with them are:

1. Bharadwaja
   Bharadwaja
   Bharadwaja was one of the greatest Hindu Arya sages descendant of rishi Angirasa, whose accomplishments are detailed in the Puranas. He was one of the Saptarshis in the present Manvantara; with others being Atri, Vashishtha, Vishvamitra, Gautama, Jamadagni, Kashyapa.Bhardwaj Rishi was father of...
   
   : 84 + 186 Bhārdvāja
2. Vasista: 41 Apara + 84 Vriddha + 27 Divā + 62 Purva + 39 Uttara
3. Vishvamitra : 108
4. Vatsa
   Vatsa
   Vatsa was one of the solasa Mahajanapadas of Uttarapatha of ancient India mentioned in the Anguttara Nikaya....
   
    : 75
5. Parashara
   Parashara
   ' is a Rigvedic Maharishi and author of many ancient Indian texts. Parāśara was the grandson of Vashista, the son of Śakti Maharṣi, and the father of Vyasa. There are several texts which give reference to Parāśara as an author/speaker...
   
   : 34 + 25 of Pārāśara
6. Gautama Maharishi
   Gautama Maharishi
   Gautama Maharishi is one of the Saptarishis Gautama Maharishi is one of the Saptarishis Gautama Maharishi is one of the Saptarishis (Seven Great Sages Rishi of the current Manvantara (seventh). He was one of the Maharishis of Vedic times, known to have been the discoverer of Mantras --...
   
    : 42
7. Atreya
   Atreya
   An Atreya is a descendant of Atri, one of the great Hindu sages whose accomplishments are detailed in the Puranas.The descendents of Atri Rishi use Atreya as their surname just like many other Gotras, or clan names used by the Brahmin community of Hindus in India and Nepal. In Northern India,...
   
    : 36
8. Śāndilya : 31
9. Kashyap
   Kashyap
   Kashyapa was an ancient sage , who is one of the Saptarshis in the present Manvantara; with others being Atri, Vashishtha, Vishvamitra, Gautama, Jamadagni, Bharadwaja...
   
    : 24 + 9 of Kāśyapa
10. : 15 + 13 of Bhārgava
11. Hārita : 25
12. Mudgala : 22
13. Agniveś Bhārdvaja: 21
14. : 19
15. Garga : 18

śāsanas within Sanadhya Brahmins

An incomplete list of śāsanas in Sanadhya Brahmins be found here:

• Arele
• Bhatele
• Bohare
• Dandotia
• Dubeniya
• Dubey
• Devpuria
• Deolia, Devalia
• Dimole
• Dantere
• Gandharwala
• Girdonia
• Hardenia
• Katare
• Kontu
• Lamania, Lavania
• Mahere
• Narolia
• Pachouri, Pachauri, Pachori (All Same)
• Rajoria
• Rawat
• Sirothia
• Sthapak
• Tinguriya
• Trigunayat,Tigunait, Tignath(All Same)
• Udainia

Allh system is in use in Saryupareen Brahmins

Saryupareen Brahmins

Saryupareen Brahmins , also known as Sarvarya Brahmins or Saryupariya Brahmins, are North Indian Brahmins residing on the eastern plain of the Sarayu near Ayodhya...

like Babele, Kuraria, Urmalia, Pyasi, Sahgora etc, and also in Jijhotia brahmins like Pateria, Richharia, Samele, Sudele etc.