Skip to content

LianLian

Leveraging blockchain, AI, and Citi's global network to help navigate requirements and drive efficiency.

Tim Shen, LianLian Global Co-CEO, shares insights on leveraging blockchain, AI, and Citi’s global network to help navigate regulations and drive efficient cross-border transactions.

Tim Shen
Tim Shen
Co-CEO, LianLian
We only need to build the single access with one point from Citi and then we can access the entire Citi network to facilitate our clients' business in different markets.

Helping organizations grow and move forward

Our approach is grounded in consistent execution, trusted relationships, and a commitment to delivering measurable impact.

Contact us

Citi customer service representatives are available to answer your questions and help you find what you need.

Are you an existing Citi Client?

Contact us

Citi customer service representatives are available to answer your questions and help you find what you need.

How can we help?

info icon

Please be advised that this form is not intended for urgent inquiries or servicing requests. For such matters, kindly contact your Citi representative directly.

Contact us

Citi customer service representatives are available to answer your questions and help you find what you need.

Select your location and contact our Citi Customer Service using the method(s) below.

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone:

 

Cardholders:
+ 0800 999 2274

 

International:
1-502-522-9113

 

Program Administrators:
+54 (11) 4329-1500 or 08107771500

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone or by email: customerservice.commcards@citi.com

 

Cardholders:
1800 629 644 or +61 2 8225 0210

 

Programme Administrators:
1800 508 384 or +61 2 8225 0250

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone or by downloading and filling out the form below and sending it to LostMyCorporateCard@citi.com

 

Local: 
+43 1717 17115

 

International: 
+43 12060 92580

 

Download form
English
German

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone or by downloading and filling out the form below and sending it to LostMyCorporateCard@citi.com

 

Local: 
+32 2641 9415

 

International: 
+32 2200 7626


Download form in English

Download form in Dutch

Download form in French

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone:

 

Cardholders:
0800-724-9401 or +55 (11) 3004-9401 (Main cities)

 

International:
+55 11 4004-2484 or +55 (11) 3004-9402 (SAC) or 0800-724-9402

 

Programme Administrators:
+55 (11) 3004-9401 or 0800 724 9401

 

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone or by downloading and filling out the form below and sending it to LostMyCorporateCard@citi.com

 

Local: 
+359 2917 5115

 

International: 
+359 2495 1538

 

Download form
English

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone:

 

Local:
888 834 2484

 

International:
416 369 6399

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone:

 

International:
(600) 637 2000

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone or by email: commercialcard.china@citi.com

 

Cardholders:
400 920 6888 or +86 21 2036-0300

 

Programme Administrators:
400 821 2896 or +86 21 2036-0308

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone:

 

Cardholders:
+ 57 601 6383838

 

Program Administrators:
+ 57 601 6383838

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone:

 

Cardholders:
+506 2201 0909

 

Program Administrators:
+506 2201 0910

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone or by downloading and filling out the form below and sending it to LostMyCorporateCard@citi.com

 

Local: 
+420 2330 61315

 

International: 
+420 2390 00592 or +420 233 061 122

 

Download form
English
Czech

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone or by downloading and filling out the form below and sending it to LostMyCorporateCard@citi.com

 

Local: 
+45 3363 8325

 

International: 
+45 4331 0500

 

Download form
English
Danish

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone:

 

Department of Defense Cardholder Servicing:
800-200-7056 (Toll-free) or 757-852-9076 (Collect/Outside US)

 

Agency Program Coordinator (APC) Servicing:
866-670-6462 (Toll-free) or 757-853-2467 (Collect/Outside US)

 

Cardholder Servicing:
1-800-790-7206 (Toll-free) or 904-954-7850 (Collect)

 

Agency/Organization Program Coordinator (A/OPC) Servicing:
1-800-790-7206 (Toll-free) or 1-904-954-7314 (Collect)

 

Local:
800 248 4553

 

International:
 904 954 7314

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone:

 

Cardholders:
 

Program Administrators:

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone:

 

Local:
261 45600

 

International:
+202 261 45600

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone:

 

Cardholders:
+503 2534 6968

 

Program Administrators:
+503 2534 6969

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone or by downloading and filling out the form below and sending it to LostMyCorporateCard@citi.com

 

Local: 
+358 9348 87115

 

International: 
+358 9725 22234

 

Download form
English
Finnish

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone or by downloading and filling out the form below and sending it to LostMyCorporateCard@citi.com

 

Local:
+33 1707 55015


International:
+33 1869 90230

Download form
French
English

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone or by downloading and filling out the form below and sending it to LostMyCorporateCard@citi.com

 

Local: 
+49 69136 61115

 

International: 
+49 695880 780380

 

Download form
English
German

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone:

 

Cardholder Servicing:
 1-800-790-7206 (Toll-free) or 904-954-7850 (Collect)

 

Agency/Organization Program Coordinator (A/OPC) Servicing:
1-800-790-7206 (Toll-free) or 1-904-954-7314 (Collect)

 

Department of Defense Cardholder Servicing:
800-200-7056  (Toll-free) or 757-852-9076 (Collect/Outside US)

 

Agency Program Coordinator (APC) Servicing:
866-670-6462 (Toll-free) or 757-853-2467 (Collect/Outside US)

 

Local:
800 248 4553

 

International:
904 954 7314

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone or by downloading and filling out the form below and sending it to LostMyCorporateCard@citi.com

 

Local: 
+30 21032 92115

 

International: 
+30 21030 08859

 

Download form
English
Greek

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone:

 

Cardholders:
+502 2336 8008

 

Program Administrators:
+502 2336 8009

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone:

 

Local:
(504) 216 2825 or (504) 507 2825

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone or by email: customerservice.commcards@citi.com

 

Cardholders:
 800 938 759 or +852 3516 8235 (English) or 800 938 763 (Cantonese)

 

Programme Administrators:
800 905 435 or 852 2868 6611 (English) or  800 938 763 (Cantonese)

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone or by downloading and filling out the form below and sending it to LostMyCorporateCard@citi.com

 

Local: 
+36 1374 5515

 

International: 
+36 1777 7913

 

Download form
English
Hungarian

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone or by email: customerservice.commcards@citi.com

Cardholder Customer Service: 
000 800 050 8767 (+6568042767) 

Programme Administrators: 
000 800 050 8767 (+6568042767)
PA Passcode: 87539247

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone or by email: commcard.indonesia@citi.com

 

Cardholders: 
0800 1CCCARD (222273) or +6221 2996 1755

 

Programme Administrators:
007 803 011 0381 or +6221 2996 1744

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone or by downloading and filling out the form below and sending it to LostMyCorporateCard@citi.com

 

Local: 
+353 1622 0215

 

International: 
+353 1562 1372

 

Download form
English

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone:

 

Local:
+374 05815

 

International:
+972 237 60404

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone or by downloading and filling out the form below and sending it to LostMyCorporateCard@citi.com

 

Local: 
+39 02890 62115

 

International: 
+39 02871 03851

 

Download form
English
Italian

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone or by email: commcards.jp@citi.com

 

Cardholders:
+81 3 6776 9000

 

Programme Administrators:
+81 3 6776 9055

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone:

 

Local:
(727) 25 82 122

 

International:
+7 (727) 25 82 122

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone:

 

Local:
020 275 4666

 

International:
+254 - 20 275 4666

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone or by email: korea.334card@citi.com

 

Cardholders: 
82 2 2004 1004 (English) or 82 2 1566 1000 (Korean)

 


Programme Administrators:
82 2 2124 3849

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone:

 

Local:
 225 94028

 

International:
+965 225 94028

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone or by downloading and filling out the form below and sending it to LostMyCorporateCard@citi.com

 

Local: 
+352 4514 14715

 

International: 
+352 34208 08756

 

Download form in English

Download form in French

Downnload form in German

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone or by email: customerservice.commcards@citi.com

 

Cardholders:
1800 82 2222 or +603 2300 2222

 

Programme Administrators:
1800 81 5328 or +603 2383 2056

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone:

 

Cardholders:
+52 55 2226-0033

 

Program Administrators:
+52 55 2226-0033

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone or by downloading and filling out the form below and sending it to LostMyCorporateCard@citi.com

 

Local: 
+31 2065 14285

 

International: 
+31 7070 07308

Download form
English
Dutch

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone or by email: customerservice.commcards@citi.com

 

Cardholders:
0800 277 704 or +64 9369 5870

 

Programme Administrators:
0800 452 240 or +64 9307 1993

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone:

 

Local:
(505) 255 8000

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone:

 

Local: 
01 277 4700

 

International:
+234 1 277 4700

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone or by downloading and filling out the form below and sending it to LostMyCorporateCard@citi.com

 

Local: 
+47 2200 9685

 

International: 
+47 2405 5153

 

Download form
English
Norwegian

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone:

 

Local:
0800 88880

 

International:
+44 203 569 6371

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone:

 

Cardholders:
+507 210 5905

 

Program Administrators:
+507 210 5906

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone:

 

Cardholders:
+511-215-2322

 

Program Administrators:
+511-215-2080

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone or by email: customerservice.commcards@citi.com

 

Cardholders:
1800 10 894 7435 or +63 2 8947435

 

Programme Administrators:
1 800 1 114 2306 or +63 2 894 7967

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone or by downloading and filling out the form below and sending it to LostMyCorporateCard@citi.com

 

Local: 
+48 2212 81115

 

International: 
+48 2230 62685

 

Download form
English
Polish

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone or by downloading and filling out the form below and sending it to LostMyCorporateCard@citi.com

 

Local:
+351 2131 16338

 

International:
+44 203 569 6373

 

Download Form
Portuguese
English

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone:

 

Cardholders:
+1 888 504 7073

 

Program Administrators:
+1 888 504 7073

 

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone or by downloading and filling out the form below and sending it to LostMyCorporateCard@citi.com

 

Local:
+40 2120 35315

 

International: 
+40 3737 88341

Download form
Romanian
English

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone:

 

Local:
(495) 77 55 999

 

International:
+7 (495) 77 55 999

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone or by email: customerservice.commcards@citi.com

 

Cardholders:
800 181 1070 or +65 6238 6367

 

Programme Administrators:
800 120 5569 or +65 6595 3828

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone or by downloading and filling out the form below and sending it to LostMyCorporateCard@citi.com

 

Local:
+421 2582 30300

 

International:
+421 2686 22464

 

Download form
Slovak
English

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone:

 

Local:
021 427 3078

 

International:
+27 (0) 21 427 3078

 

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone or by downloading and filling out the form below and sending it to LostMyCorporateCard@citi.com

 

Local:
+34 9153 84315

 

International:
+34 9105 07128

Download form
Spanish
English

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone or by downloading and filling out the form below and sending it to LostMyCorporateCard@citi.com

 

Local:
+46 8723 3515

 

International:
+46 8519 89595

 

Download form
Swedish
English

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone or by downloading and filling out the form below and sending it to LostMyCorporateCard@citi.com

 

Local: 
+41 5875 07994

 

International:
+41 4452 46444

 

Download form in English
Download form in French

Download form in German

Download form in Italian

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone or by email: commcards.twpa@citi.com

 

Cardholders: 
0800 808 050 or +886 2 2576 8050

 

Programme Administrators:
0801 136 210 or +886 2 2576 2621

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone or by email: commcards.th@citi.com

 

Local:
+66 2 232 4299

 

International: 
+66 2 232 4299

 

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone:

 

Local: 
0 850 222 0 500

 

International:
+90 850 222 0 500

 

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone:


Local:
(044) 495 64 65

 

International:
+38 (044) 495 64 65

 

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone:


Local:
6005 222 30

 

International:
+971 6005 222 30

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone or by downloading and filling out the form below and sending it to LostMyCorporateCard@citi.com

 

Local: 
+44 20822 84700

 

International: 
+44 20390 12815

 

Download form
English

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone:

 

Local:
800-248-4553

 

International: 
904-954-7314

 

Department of Defense Cardholder Servicing: 
800-200-7056

 

Department of Defense Agency Program Coordinator Servicing:
866-670-6462 (Toll-free) or 757-853-2467 (Collect/Outside US)

 

Government Services Administration Cardholder Servicing: 
1-800-790-7206 (Toll-free) or 904-954-7850 (Collect)

 

Government Services Administration Agency/Organization Program Coordinator Servicing: 
1-800-790-7206 (Toll-free) or 1-904-954-7314 (Collect)

You can report your lost/stolen/suspected fraud Corporate Card details by contacting our Citi Customer Service by phone:


Cardholders:
+84 28 3521 1080

 

Programme Administrators: 
+84 28 3521 1080
Key in this 8 digit code when you are prompted for a card number: 87539247

Contact us

Citi customer service representatives are available to answer your questions and help you find what you need.

To help us put you in contact with the right person, please provide the information below.

Contact us

Citi customer service representatives are available to answer your questions and help you find what you need.

To help us put you in contact with the right person, please provide the information below.

0 characters (Minimum 80)

Contact us

Citi customer service representatives are available to answer your questions and help you find what you need.

Thank you for contacting us.

thank you icon

Someone from our team will be in touch shortly.

Contact us

Citi customer service representatives are available to answer your questions and help you find what you need.

To help us put you in contact with the right person, please provide the information below.

info icon

Kindly note that our services are exclusively available for businesses in the countries shown in the headquarters location list above. Should your country not appear in this list, we regret that our services cannot be provided at this time.

Contact us

Citi customer service representatives are available to answer your questions and help you find what you need.

How can we help?

info icon

Please provide an answer to at least one of the above fields before continuing and do not share personal or account information in your comments submission.

Contact us

Citi customer service representatives are available to answer your questions and help you find what you need.

To help us put you in contact with the right person, please provide the information below.

Contact us

Citi customer service representatives are available to answer your questions and help you find what you need.

Please contact us at the method below.

For comments, questions or concerns relating to the processing of your personal information, please navigate to the following page: Citi’s privacy contact form 

Contact us

Citi customer service representatives are available to answer your questions and help you find what you need.

Please contact us at the method below.

For comments, questions or concerns relating to the processing of your personal information, please navigate to the following page: Citi’s privacy contact form 

Citi logo
Important Legal Disclosures & Information

The content on this website is provided for informational purposes only and without any warranty. Citigroup Inc. (Citi) makes no representations regarding accuracy, completeness, or suitability of this content for any specific purpose. Your use of this website and reliance on its content is solely at your own risk. Citi may update this website periodically, including its terms, conditions and descriptions, but has no obligation to do so. The content, including any opinions or forecasts, is based on sources believed to be reliable at the time of publication and is subject to change without notice.

Terms, conditions and fees for accounts, products, programs and services are subject to change. Not all accounts, products, and services, or the pricing described herein, are available in all jurisdictions or to all customers. Your eligibility for a particular product or service is subject to a final determination by Citi. Your country of citizenship, domicile, or residence, if other than the United States, may have laws, rules, and regulations that govern or affect your application for and use of our accounts, products and services. This includes, but is not limited to, laws and regulations regarding taxes, exchange and/or capital controls which you are responsible for following.

This website should not be construed to constitute specific professional advice of any kind and should not be used or relied upon by any person for the purpose of making any legal, regulatory, tax, investment, accounting, financial or other decision or to provide advice on such matters to any other person.  Citi is not a legal or tax advisor, readers should consult their own professional advisors. 

 © 2026 Citigroup, Inc. All rights reserved.  Citi, Citi and Arc Design and other marks used herein are service marks of Citigroup Inc. or its affiliates, used and registered throughout the world.Outside the U.S., investment products and services are provided by other Citigroup affiliates. Investment Management services (including portfolio management) are available through CGMI, CGA, Citibank, N.A. and other affiliated advisory businesses. Neither Citigroup nor any of its affiliates provides tax or legal advice.