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Contact us


If you have any questions or queries, you can reach us here. "Contact us" below to reach the following services within your region: Billing, Careers, Marketing/Communication, Sales and Press/Media.

Contact Us

Browse our regions to find contact information for our local offices.

Asia Pacific

Australia

  • Sydney
  • Level 8, 76 Berry Street
  • North Sydney, NSW 2060
  • Australia
  • Melbourne
  • Level 11, 535 Bourke Street
  • Melbourne, VIC 3000
  • Australia

China

  • Beijing
  • Unit 2228, 22nd Floor
  • China World Tower 1
  • 1, Jian Guo Men Wai Avenue
  • Beijing 100004, PRC
  • Tel: (+86) 10 5921 9000
  • Shanghai
  • 2104-08, 21/F
  • Shanghai Times Square
  • 93 Huai Hai Zhong Lu
  • Lu Wan District
  • Shanghai 200021, PRC
  • Tel: (+86) 21 2308 0888
  • Guangzhou
  • Room 1323, 13/F Teem Tower
  • 208 Tian He Road, Guangzhou
  • Tian He District
  • Guangzhou 510620, PRC
  • Shenzhen
  • Room 2645, 26th Floor
  • Anlian Center
  • 4018 Jin Tian Road
  • Futian District
  • Shenzhen 518026, PRC
  • Tianjin
  • 8/F Regus Tianjin Center
  • No.219 Nanjing Road Helping District
  • Tianjin 300061, PRC

Hong Kong

  • Hong Kong
  • Asia Pacific Headquarters
  • 22/F, Cityplaza One
  • 1111 King's Road
  • Taikoo Shing
  • Hong Kong
  • Email (Marketing): mktg@ap.att.com

India

  • New Delhi
  • Vatika Triangle, 3rd Floor
  • Sushant Lok -1, Block A
  • MG Road, Gurgaon - 122002 Haryana
  • India
  • Tel: +91 12 4486 8777
  • Fax: +91 12 4428 3194 or 4428 3195
  • Bangalore
  • Block A, Ground Floor, Salarpuria Softzone
  • Bellandur Post, Bangalore - 560 103
  • India
  • Tel: +91 80 4131 8000
  • Fax: +91 80 4131 8191
  • Email: gbsindia@ap.att.com

  • Mumbai
  • 4th Floor, Platina Building
  • C-59, G Block, Bandra Kurla Complex
  • Bandra East
  • Mumbai-400 051
  • India
  • Tel: +91 22 6681 7900/21
  • Email: gbsindia@ap.att.com
  • Chennai
  • Module 4C , 10th Floor, Block A
  • West Wing, SP Infocity
  • Plot No 40, MGR Salai Kandanchavadi Perungudi
  • Chennai - 600 096
  • India
  • E mail:gbsindia@ap.att.com

 

  • Pune
  • Suite No. 14, 5th Floor
  • Vatika Business Center
  • C-Wing, Panchshil Tech Park - 1
  • Airport Road, Yerwada
  • Pune - 411 006
  • India
  • Email: gbsindia@ap.att.com

 

  • Grievance Officer
  • If you find any objectionable content on this website please contact:
  • Adarsh Chauhan
  • Contact No. +91 12 4486 8727

Indonesia

  • Jakarta
  • Sampoerna Strategic Square
  • South Tower, 18th floor
  • Jl. Jend. Sudirman Kav. 45-46
  • Jakarta 12930
  • Indonesia
  • Tel: +62 21 575 0805
  • Fax: +62 21 577 0801
  • Email: sales.id@ap.att.com

Japan

  • Tokyo
  • Headquarter
  • 2-10-1, Toranomon, Minato-ku
  • Tokyo 105-0001
  • Japan
  •  

  • Osaka
  • Meiji Yasuda Life Osaka Umeda Bldg. 8F
  • 3-3-20, Umeda, Kita-ku
  • Osaka 530-0001
  • Japan
  • Email: attjmktg@intl.att.com

Korea

  • Seoul
  • 15th Floor
  • Seoul City Tower Building
  • #581 Namdaemun-ro 5-ga
  • Hooamro 110
  • Jung-gu, Seoul 04637
  • Korea

Malaysia

  • Kuala Lumpur
  • Level 2 & 3, Bangunan EMERIO
  • Linkaran Teknokrat 3 Barat
  • 63000 Cyberjaya, Selangor
  • Malaysia

New Zealand

  • Auckland
  • Level 2, 7-9 Fanshawe Street
  • Viaduct Harbour
  • Auckland 1010
  • New Zealand
  • Wellington
  • Suite 6, Level 6,
  • I - Center, 50 Manners St.
  • Wellington 6011
  • New Zealand

Philippines

  • Makati City
  • 28th Floor, Tower 2
  • The Enterprise Center Building
  • 6766 Ayala Avenue
  • 1226 Makati City
  • Philippines
  • Fax: +63 2 849 3937

Singapore

  • Singapore
  • 85 Science Park Drive
  • The Cavendish
  • Unit #03-01 to 08
  • Singapore 118259

Taiwan

  • Taipei
  • Room D, 16 th Floor
  • Hung Tai Century Tower
  • 156 Min Sheng E. Road Sec 3
  • Taipei 105
  • Taiwan

Thailand

  • Bangkok
  • Empire Tower, 15th Floor, Unit 1504
  • 1 South Sathorn Road, Yannawa, Sathorn, Bangkok 10120
  • Tel: +66 2 670 9700
  • Fax: +66 2 670 9707

Vietnam

EMEA

Austria

  • Wien
  • AT&T Global Network Services Austria GmbH
  • Wienerbergstraße 11-12A
  • 1100 Wien
  • Austria

Belgium

  • Vilvoorde
  • AT&T Business EMEA
  • Medialaan 36
  • 1800 Vilvoorde
  • Belgium

Bulgaria

  • Sofia
  • AT&T Global Network Services Bulgaria Ltd.
  • 19A Patriarch Evtimii blv., fl.2
  • Sofia 1142
  • Bulgaria

Croatia

  • Zagreb
  • AT&T Global Network Services Croatia Ltd.
  • Sarengradska 9
  • 10000
  • Zagreb
  • Croatia

Czech Republic

  • Brno
  • AT&T Global Network Services Czech Republic s.r.o.
  • The Campus Science Park
  • Palachovo náměstí 726/2
  • 625 00 Brno
  • Czech Republic
  • Praha
  • AT&T Global Network Services Czech Republic s.r.o.
  • Kubánské náměstí 1391/11
  • 100 00 Praha 10
  • Czech Republic

Denmark

  • Ballerup
  • AT&T GNS Denmark
  • Borupvang 1
  • 2750 Ballerup
  • Denmark
  • Risskov
  • AT&T GNS Denmark
  • Bytoften 1
  • 8240 Risskov
  • Denmark
  • Brondby
  • AT&T GNS Denmark
  • Provensvej 1
  • 2605 Brondby
  • Denmark
  • Soeborg
  • AT&T GNS Denmark
  • Automatikvej 1
  • 2860 Soeborg
  • Denmark

Finland

  • Helsinki
  • AT&T GNS Finland
  • Tietokuja 2
  • Helsinki, 00330
  • Finland
  •  

  • Luna House Mannerheimintie 12B
  • Helsinki, 00100
  • Finland

France

  • Paris
  • AT&T GNS France
  • AT&T GNS France
  • 9-11 allée de l'Arche
  • Tour Egée
  • 92671 Courbevoie
  • France
  • Nice
  • AT&T GNS France
  • 400 Promenade des Anglais
  • 06000 Nice
  • France

Germany

  • Berlin
  • AT&T Global Network Services Deutschland GmbH
  • Kurfürstendamm 21
  • 10719 Berlin
  • Germany
  • Düsseldorf
  • AT&T Global Network Services Deutschland GmbH
  • Kaiserswerther Str 117
  • 40474 Dusseldorf
  • Germany
  • Frankfurt
  • AT&T Global Network Services Deutschland GmbH
  • Düsseldorfer Strasse 13
  • 65760 Eschborn (near Frankfurt)
  • Germany
  • Böblingen
  • AT&T Global Network Services Deutschland GmbH
  • Hans- Klemm- Str. 5
  • 71034 Böblingen
  • Germany
  • Munich
  • AT&T Global Network Services Deutschland GmbH
  • Willy-Brandt-Platz 3
  • 81829 Munich
  • Germany
  • Hamburg
  • AT&T Global Network Services Deutschland GmbH
  • Flughafenstrasse 52 B
  • 22335 Hamburg
  • Germany

Greece

  • Athens
  • AT&T GNS Greece
  • 90 Kifissias Avenue
  • Athens 15125
  • Greece

Hungary

  • Budapest
  • AT&T GNS Hungary
  • Infopark
  • Gabor Denes Utca 2
  • Budapest, 1117
  • Hungary

Ireland

  • Dublin
  • AT&T Global Network Services Ireland Ltd
  • Ballycoolin Industrial Estate
  • Ballycoolin
  • Dublin
  • Ireland

Italy

  • Torino
  • AT&T GNS Italy
  • Building A2
  • Via Livorno 60
  • Torino 10144
  • Italy
  • Milan
  • AT&T GNS Italy
  • Via Vincenzo Monti 8
  • Milan 20123
  • Italy

Israel

  • Lod
  • AT&T GNS Israel
  • Negev 4 Airport City
  • P.O. Box 276
  • Ben Gurion Airport
  • 70150 Lod
  • Israel

Luxembourg

  • Luxembourg
  • AT&T GNS Luxembourg
  • 5 Rue Heienhaff
  • L-1736 Senningerberg
  • Luxembourg

The Netherlands

  • The Hague
  • AT&T GNS Netherlands
  • Wilhelmina van Pruisenweg 104
  • 2595 AN The Hague
  • The Netherlands

Norway

  • Kolbotn
  • AT&T GNS Norway
  • Rosenholmvn. 25
  • 1410 Kolbotn
  • Norway

Poland

  • Warsaw
  • AT&T Global Network Services Polska Sp. z o.o.
  • Aleje Jerozolimskie 96
  • 00-807 Warsaw
  • Poland

Portugal

  • Lisboa
  • AT&T Serviços de Telecomunicações , S.U., Lda
  • Centro Empresarial Torres de Lisboa
  • Rua Tomás da Fonseca, Torre G - 1º andar
  • 1600-209 Lisboa
  • Portugal

Romania

  • Bucharest
  • AT&T GNS Romania
  • Building, Entrance F, 1st Floor, c/o Regus
  • 10 Piata Montreal
  • 011469, Bucharest
  • Romania

Russia

  • Moscow
  • AT&T Global Network Russia
  • Per Sivtsev Vrazhek 25/9, Bldg 1, 3rd Fl
  • Moscow 119002
  • Russian Federation

Slovakia

  • Bratislava
  • AT&T Global Network Services Slovakia
  • Cbc, Karadzicova 8a
  • 821 08, Bratislava 2
  • Slovakia
  • Lakeside Park
  • AT&T Global Network Services Slovakia
  • Lakeside Park 01
  • Tomasikova 64
  • 831 04, Bratislava
  • Slovakia
  • Aupark Tower
  • AT&T Global Network Services Slovakia
  • Einsteinova 24
  • 851 01, Bratislava
  • Slovakia
  • Kosice
  • AT&T Global Network Services Slovakia
  • Letna 45
  • 040 01, Kosice
  • Slovakia

Slovenia

  • Ljubljana
  • AT&T Global Network Slovenia
  • 3 Trg Republika
  • 1000
  • Ljubljana
  • Slovenia

South Africa

  • Johannesburg
  • AT&T South Africa Proprietary Limited
  • Regus Business Offices
  • 2nd Floor West Towers
  • Nelson Mandela Square
  • Maude Street
  • Sandton 2196
  • Johannesburg
  • South Africa

Spain

  • Madrid
  • AT&T GNS Spain
  • Calle Lopez de Hoyos 35
  • 28002 Madrid
  • Spain

Sweden

  • Solna
  • AT&T GNS Sweden
  • Svetsarvagen 15 2TR
  • Solna
  • 17141 Stockholm
  • Sweden

Switzerland

  • Geneva
  • AT&T GNS Switzerland
  • 6 Place des Eaux-Vives
  • CH-1208 Geneva
  • Switzerland
  • Zurich
  • AT&T GNS Switzerland
  • Rautistrasse 75
  • 8048 Zurich
  • Switzerland

Turkey

  • İstanbul
  • AT&T Global İletişim Servisleri Ltd. Şti.
  • Büyükdere Caddesi, Kanyon Ofis Binası
  • No:185 Kat:6
  • Levent 34394 İstanbul
  • Turkey

United Arab Emirates

  • Dubai
  • AT&T Operations Inc.<
  • 3rd Floor, Block D
  • Office Park Building 116
  • P.O. Box 501737
  • Dubai Internet City
  • United Arab Emirates

United Kingdom

  • London
  • AT&T GNS United Kingdom
  • 80 Victoria Street
  • London
  • SW1E 5JL
  • United Kingdom
  • Redditch
  • AT&T GNS United Kingdom
  • Highfield House,
  • Headless Cross Drive
  • Redditch
  • B97 5EQ
  • United Kingdom
  • Redditch
  • AT&T GNS United Kingdom
  • Ravensbank Drive,
  • North Moons Moat
  • Redditch
  • B98 9AY
  • United Kingdom
  • Havant
  • AT&T GNS United Kingdom
  • Building 6000,
  • Langstone Rd, Langstone T
  • Havant
  • P09 1SA
  • United Kingdom
  • Manchester
  • AT&T GNS United Kingdom
  • 3000 Aviator Way,
  • Manchester Business PA
  • Manchester
  • M22 5TG
  • United Kingdom
Latin America & Caribbean

Argentina

  • Buenos Aires
  • AT&T GNS Argentina
  • Juana Manso 555, 3rd FL, B.
  • Dique IV, Puerto Madero
  • Capital Federal (C1106CBK)
  • Buenos Aires
  • Argentina
  • Buenos Aires
  • AT&T GNS Argentina
  • Edison 2659, Edificio 2
  • San Isidro (B1640HSA)
  • Buenos Aires
  • Argentina

Brazil

  • Sao Paulo
  • AT&T GNS Brazil
  • Rua James Joule, 65 – 6 and 7 floors
  • Brooklin, SP 04576-080
  • Brazil
  • Rio De Janeiro
  • AT&T GNS Brazil
  • Rua Lauro Muller 116/3106
  • Botafogo, RJ 22299-160
  • Brazil
  •  

  • Campinas
  • AT&T GNS Brazil
  • Av John Dalton, 301, Edificio 02 Tech
  • Campinas 13069-330
  • Brazil

Chile

  • Santiago
  • AT&T GNS Chile
  • Malaga 89, Piso 7, Las Condes
  • Santiago 6761570
  • Chile

Colombia

  • Bogota
  • AT&T GNS Colombia
  • Diagonal 97 No. 17-60, Oficina 902
  • Edificio Premium, Piso 9
  • Bogota
  • Colombia

Costa Rica

  • Costa Rica
  • AT&T SERVICIOS DE COMUNICACION DE COSTA RICA S.A.
  • San Jose
  • Costa Rica

El Salvador

  • San Salvador
  • AT&T GNS El Salvador
  • 89 Av. norte y Calle El Mirador
  • Edif. WTC, torre 1, nivel 2
  • Col. Escalon, San Salvador
  • El Salvador

Guatemala

  • Guatemala City
  • AT&T GNS Guatemala
  • 3a. avenida 13-78 zona 10 Edificio Torre Citibank 8vo. Nivel
  • Guatemala City
  • Guatemala

Mexico

  • Mexico City
  • AT&T
  • Río Lerma 232
  • Cuauhtémoc, Mexico City DF 06500
  • Mexico

Panama

  • Panama City
  • AT&T GNS Panama
  • Torre de Las Americas B, Piso 15.
  • Punta Pacifica, Panama City 0832-00155
  • Panama

Peru

  • Lima
  • AT&T GNS Peru
  • Av. Victor Andres Belaunde 147
  • Lima 27
  • Peru

Puerto Rico

  • San Juan
  • AT&T GNS Puerto Rico
  • 996 San Roberto street
  • Reparto Loyola
  • San Juan, PR 00926
  • Puerto Rico

Venezuela

  • Caracas
  • AT&T GNS Venezuela
  • El Rosal Building
  • Municipio Chacao 1060
  • Venezuela Ave. 7th FL, Office 75. Miranda Estate
  • Venezula
North America

Canada

  • Toronto
  • AT&T GNS Canada
  • 55 Commerce Valley Drive West, Suite 700
  • Thornhill, ON L3T 7V9
  • Canada
  • Montreal
  • AT&T GNS Canada
  • Decision 1 Business Center, Suite 30, 31 and 32
  • 1 Place Ville Marie
  • Montreal, PQ H3B 2C4
  • Canada
  • Calgary
  • AT&T GNS Canada
  • 700 Avenue SW 2nd floor
  • Suite 260. Zip Code: 72P 3J4
  • Calgary, AB T2P3J5
  • Canada
  • Vancouver
  • AT&T GNS Canada
  • 885 West Georgia Street, Suite 1502. 15th floor
  • Vancouver, BC V6C 3E8
  • Canada
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