| 100 % Holidays 1800222665 |
| 101domain.in 18001027337 |
| 1Daily 18004204445 |
| 24X7guru.com 18004252425 |
| 5 Paisa 1800226555 |
| 99acres.com 18004199099 |
| A2Z Infrastructures Kanpur 18001805126 7309222333 |
| A.O. Smith 18001032468 |
| AAA Tele Shoping 1800115222 |
| Aadhaar UID Card 18001801947 |
| Aakash Institute 18001022727 |
| Aakash Tablet PC 18001802180 |
| Aashirvaad 1800110888 |
| Aavin – 1800 44 3300 |
| Abhipra 180030017777 |
| ABN AMRO – 1800 11 2224 |
| ABT Courier 1800 44 8585 |
| Accel Frontline 18004254535 |
| Ace 1800222231 |
| Ace Tours 18002336667 |
| Acer 1800116677, 1800114100, 180030001919 |
| ACES Automation of Central Excise and Serice Tax 18004254251 |
| Aconex 18001022233 |
| Actor Prepares 18002091231 |
| Acuvue 1800225990 |
| Adani Wilmar 18002339999 |
| Adrenalin – 1800 444 445 |
| Advertising Standards Council of India ASCI 1800222724 |
| ADT India 18001028926 |
| Aegon Religare 1800 209 9090 |
| Aeren Recovery Agents 18001231230 |
| AFL Wizz Courier 1800 22 9696 |
| Agarwal Packers & Movers 1800 11 4321 |
| Agni Jewels 1800221824 |
| Agni Property 18002000444 |
| Agragaami Aerospace VSM Training School 18001029666 |
| AICTE 18001805522 |
| AIG Global MF 18004253444 |
| Aircel 9807012345 9853012345 |
| Air Canada 18001028182 |
| Air Deccan 18004257008 |
| Air France 18001800033 |
| Air India — 1800 22 7722 18001801407 |
| Air Sahara 1800223020 |
| Airfone 18001034334 |
| Airtel Broadband 18001030121 |
| Airtel 18006886688 18001801407 18001034444 |
| Airtel MNP 18001031111 |
| Airtel Digital TV 18605006500 1800 102 8080 |
| Aiwa/Sony – 1800 11 1188 |
| Ajmera Builders 1800209256372 |
| Akbar Travels 1800226000 |
| Akai 18601802524 |
| Akshar Travels 18002339008 |
| Akshita Homes R K Group Lucknow 180041910111/222 |
| Ald Automotive 18001025253 |
| Aliah University 18003451786 |
| Allahabad Bank 1800220363 |
| Alliance Against Copyright Theft (AACT) 18001031919 |
| Allsec Technologies 18004255732 |
| Aloft Hotels India 18001025638 (Aloft) |
| AMA Herbal 18001808343 |
| Amara Raja Batteries 18004254848 |
| Amaris Regalia 1800119989 |
| Amaron Quanta 18002002288 |
| AMD – 1800 425 6664 |
| American Airlines 18001807300 18004337300 |
| American Express 1800 22 2639, 1800 209 2397 |
| American Power Conversion (India) 18003454272, 18004254877 |
| Amity University NCR Delhi – 1800110000 18001800111 18001800999 |
| AMP Sanmar – 1800 44 2200 |
| Amrapali Builders 18001801111 |
| Anchor Switches – 1800 22 7979 |
| Andhra Bank 18004251515 |
| Anglo Eastern Ship Mgmt Ltd 18002092376 |
| Anmol Bakers 18001803211 |
| Ansal API Properties Builders 18002665565 |
| Anti Corruption Help Line ( State Vigilance Bureau, Haryana) 1800 180 2022 |
| Anti Corruption Bureau (ACB) Maharashtra 1800222021 |
| Anupam 1800110123 |
| AOC Monitors 18004254318 |
| APC 18004254272 1800 44 4272 |
| Apeejay Stya University 18001037888 |
| Apna Loan 18002002090 |
| Apollo Hospital Delhi 1800111612 |
| Apollo Munich Health Insurance 18001020333 18001030555 |
| Apollo Tyres 18001023337 |
| Apple Computers – 1800444683 18004254646 18004254683 |
| Aptech Computer Education 18002091444 |
| Aptech Limited 1800221550 |
| Aquaguard 39883333 |
| Arise Mobiles 18001038888 |
| Aroma Mobiles 18001022567 |
| Arrow Infra 18001039212 |
| Arzoo 18002092020, 1800222120 |
| Ashok Leyland 18002663340 |
| Asia Graduate School of Business 1800229727 |
| Asian Paints Home Solutions – 1800 22 5678 18002095678 |
| Asian Sky Shop 1800 22 1800, 1800 209 4545 |
| Asia Pacific Institute of Management (AIM) 1800113334 |
| Asmi Diamonds 18001024482 |
| Associated Cargo Movers & Packers (P) Ltd 18002334560 1800 21 4560 |
| ASUS Technology 18002090365 |
| Attero Recycling 18004193283 |
| Audi India 1800112834 18001036700 18002096700 |
| Automartindia 1800224800 |
| AVA Merchandising 1800114344, 18001800300 |
| Avalon Academy 18001022002 |
| Avaya GlobalConnect 18001801211 |
| Aviations India 18004259898 |
| Avis 1800112525, 18001032847 |
| Aviva – 1800332244 18001802266 18001802244 |
| Avon India 18001022866 |
| Axis 18002335577 18002095577 18001035577 |
| Axis MF 180030003300 |
| Ayurcare 180030003500 |
| Ayur Herbal 1800112986 |
