| Architecture for Control Networks—and | Academic & Science |
| Architecture for Control Networks | Academic & Science |
| Canadian Association for Neuroscience | Academic & Science |
| Association Canadienne des Neurosciences | Academic & Science |
| Colombian Association of Neurosurgery | Academic & Science |
| Asociación Colombiana de Neurocirugía | Academic & Science |
| Accounting Career Network | Accounts and Finance |
| Ciudad Acuna | Airport Code |
| Acer Energy Limited | Business |
| American Communications Network | Business |
| Accenture | Business |
| Company News | Business |
| ACN Inc not | Business |
| Acuson Corporation | Business |
| Affiliates Contribution Network | Business |
| Acrylonitrile | Chemistry |
| Acetonitrile | Chemistry |
| Atlantis Cable News | Community |
| Aid to the Church in Need | Community |
| Alt Christnet Nudism | Community |
| Adventist Channel Network | Community |
| Area Code Number | Computing |
| Automatic Client Netware | Computing |
| Amazon Commerce Network | Computing |
| American College of Nutrition | Educational Institute |
| Accelerator Controls Node | Electronics |
| Arizona California and Nevada | General |
| AZ Care Network | General |
| Advanced Change Notice | General |
| Automated Collision Notification | General |
| All Chrysler Nationals | General |
| Auto Club Nazionale | General |
| Autobianchi Club Nederland | General |
| Autoamatori Club Novara | General |
| Auto Club Noordzee | General |
| All Car Nation | General |
| Automovil Club del Noroeste | General |
| Automovil Club de Nicaragua | General |
| Automotive Consulting Network | General |
| Automobile Club de Nice | General |
| Audi Club Norway | General |
| American Car Nostalgia | General |
| Automotive Communication Network | General |
| Automotive Competence Network | General |
| Art Center At Night | General |
| Atlantis Cable Network | General |
| Apple Consultants Network | General |
| Acn Communications Network | General |
| All Communications Network | General |
| Active Citizenship Network | General |
| All Commucation Network | General |
| Aircraft Classification Number | General |
| Airborne Communications Node | General |
| Ambient Communication Network | General |
| Ambient Communication Netwock | General |
| Automatic Crash Notification | General |
| American Communication Network | General |
| All Communication network | General |
| Ambulatory Care Network | General |
| Advance Change Notice | General |
| Abortion Care Network | General |
| Ashland Center for Nonviolence | General |
| Alcoast Comdt Notice | General |
| Air Cargo Netherlands | General |
| American Chiropractic Network | General |
| Advisor and Counselor Network | General |
| Active Communication Network | General |
| Another Cult Network | General |
| Advanced Course Network | General |
| Aircraft Condition Notice | General |
| Area Control Network | General |
| Az Cali Nev | General |
| Action Congress of Nigeria | Governmental |
| Anti Corruption Network | Governmental |
| ADHICHCHANUR | Indian Railway Station |
| Ante Christum Natum | International |
| Association of Camp Nurses | Medical |
| Auditory Cognitive Neuroscience | Medical |
| Association for Comprehensive Neurotherapy | Medical |
| Australian College of Nursing | Medical |
| Association of Camp Nursing | Medical |
| Archives of Clinical Neuropsychology | Medical |
| Autism Community Network | Medical |
| Associated and Comprehensive Neurotherapy | Medical |
| Assign Commercial Network | Military and Defence |
| Advanced Control Network | Networking |
| Australian Campus Network | Regional |
| Australian Company Numbers | Regional |
| Australian Company Name | Regional |
| Australian Company Number | Regional |
