ITNAC 2021 was held online due to COVID-19 and hosted by the University of New South Wales, Sydney, Australia with General Co-Chairs Associate Professor Mark A Gregory and Professor Vijay Sivaraman. Juniper Networks was the Gold Patron. The committee allocated AUD$7,200 for twelve student travel assistance grants. The conference held several online discussions among the attendees to discuss recent and future research. The committee again wished everyone in our community and their families a safe and healthy new year.

ITNAC 2020 was held online due to COVID-19 and hosted by RMIT University, Melbourne, Australia with General Chair Associate Professor Mark A Gregory. Huawei Australia and Juniper Networks were the Gold Patrons. The committee allocated AUD$7,200 for twelve student travel assistance grants. The conference held several online discussions among the attendees to discuss recent and future research. The committee wished everyone in our community and their families a safe and healthy new year.

ITNAC 2019 was held in Auckland, New Zealand at the Auckland University of Technology with General Co-Chairs Associate Professor Mark A Gregory, Professor Adnan Al-Anbuky and Associate Professor Nurul Sarkar. Huawei Australia and Juniper Networks were the Gold Patrons. The committee allocated AUD$7,200 for twelve student travel assistance grants. MDPI provided AUD$1000 for the best paper prizes. The conference tour was a walk through some of the wonderful parks found in Auckland with afternoon tea at a cafe in the middle of a very green park.

ITNAC 2018 was held in Sydney, Australia at the University of New South Wales with General Co-Chairs Associate Professor Mark A Gregory and Professor Vijay Sivaraman between 21-23 November 2018. Huawei Australia and Juniper Networks were the Gold Patrons. The committee allocated AUD$7,200 for twelve student travel assistance grants. MDPI provided AUD$1000 for the best paper prizes. The conference tour was a spectacular walk along the coast from Bondi to Coogee Beach with afternoon tea at the mid-way point.

ITNAC 2017 was held in Melbourne, Australia at the Rendezvous Hotel from 22-24 November 2017. The General Chair was Associate Professor Mark Gregory. Huawei Australia was the Gold Patron and provided AUD$6000 for the ten student travel assistance grants. MDPI provided AUD$1000 for the best paper prizes. In 2017 the conference tour was to the National Sports Museum and the Melbourne Cricket Ground.

ITNAC 2016 was held in Dunedin, New Zealand at the University of Otago between 7-9 December 2016. The General Co-Chairs were Dr Mark Gregory and Professor Martin Purvis.

In 2015 the conference name to be changed to "International" in response to a funding requirement in some countries that conferences include "International" in the title. Whilst the change in the name meant that the abbreviation "ATNAC" has become "ITNAC" this was considered to be a small change if it meant the conference would continue to attract high quality papers from around the world.

ITNAC 2015 was held at University of New South Wales in Sydney, Australia with General Co-Chairs Dr Mark A Gregory and Associate Professor Vijay Sivaraman between 18-20 November 2015.

ATNAC 2014 was held in conjunction with the Engineers Australia Convention 2014 in Melbourne, Australia with General Chair Dr Mark A Gregory between 26-28 November 2014.

ATNAC 2013 was held in Christchurch, New Zealand with General Co-Chairs Dr Mark A Gregory and Prof Richard Harris. It was held in conjunction with the  22nd ITC Specialist Seminar on Energy Efficient and Green Networking, with General Co-Chairs Prof. Krys Pawlikowski and Prof. Phuoc Tran-Gia.

ATNAC 2012 was held in Brisbane, Australia. The General Co-Chairs were Dr Naveen Chilumkurti and Dr Mark Gregory.

ATNAC 2011, Melbourne, Australia, November 9-11, 2011

ATNAC 2010, Auckland, New Zealand, 31 October-3 November 2010

ATNAC 2009, Canberra, Australia, 10-12 November 2009

ATNAC 2008, Adelaide, Australia, 7–10 December 2008 

In 2007, a minor name change occurred but did not alter the name "ATNAC". The first "A" in ATNAC was originally "Australian" but was changed to "Australasian" and the first ATNAC held outside Australia was held in Christchurch New Zealand in 2007. The idea being to host one in every three conferences in New Zealand for the foreseeable future.

ATNAC 2006, Melbourne,  Victoria, Australia, 4-6 December, 2006

ATNAC 2005,  Melbourne, Victoria, Australia, 21-24 November 2005

ATNAC 2004, Sydney, Australia, December 8-10, 2004

In 2003 ATNAC was held in conjunction with the re-formation of the Australian Telecommunications CRC. The Australian Telecommunications CRC CEO, Leith Campbell, suggested that ATNAC be revived as a flagship of Telecommunications research in Australia. This new revitalised series began in 2003 and has continued uninterrupted ever since.

In 1996, ATNAC conferences was delivered as a joint conference with the International Switching Symposium in Sydney.

In 1994, ATNAC was born as an amalgamation of local conferences and symposium. The first one was held in Melbourne in 1994 with General Chair Paul Kirton from Telecom Research Labs.

In 1993 the last of the "Australian Teletraffic Research Seminars" was conducted at RMIT University, Melbourne Australia and at that point, Telstra management felt that there were three seminars in Australia that attracted similar people and that they would only support a combined conference which brought together the three seminars titled "Australian Teletraffic Engineering Research Seminar", "Australian Multi-media Communications, Applications & Technology Workshop" and "Australian Broadband Switching & Services Symposium". Each of these had their own separate seminar series that had been supported by Telstra and were run in Australia.

For approximately eight years starting in the mid-1980s, a seminar series called the "Australian Teletraffic Research Seminar" was run on an annual basis.