UNITED STATES SECURITIES AND EXCHANGE
COMMISSION

Washington, D.C. 20549



FORM 10-K/A

Amendment No. 1



ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES
EXCHANGE ACT OF 1934



For the fiscal year ended December 31,
2012



TRANSITION REPORT PURSUANT TO SECTION
13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934



For the transition period from ____________________
to ____________________



000-30061

(Commission file No.)



ELEPHANT TALK COMMUNICATIONS CORP.

(Exact name of small business issuer
as specified in its charter)



|DELAWARE                        |  | 95-4557538                          
|------------------------------- |  | ------------------------------------
|(State or other jurisdiction of |  | (I.R.S. employer identification no.)
|incorporation or organization)  |  |                                     



9705 N. Broadway Ext.  Ste 200,
2nd Floor

Oklahoma City, OK  73114

(Address of principal
executive offices)



+31 (0) 206535916

(Issuer's telephone number, including
area code)



Securities registered pursuant to Section
12(b) of the Act:



Common Stock, $0.00001 par value per
share

(Title of class)

Securities registered pursuant to Section
12(g) of the Act:

None



Indicate by check mark if the registrant is a well-known seasoned
issuer, as defined in Rule 405 of the Securities Act.    ̈



Indicate by check mark if the registrant is not required to
file reports pursuant to Section 13 or Section 15(d) of the Act.    ̈



Indicate by check mark whether the registrant (1) has filed
all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or
for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements
for the past 90 days.  Yes  x   No   ̈



Indicate by check mark if disclosure of delinquent filers pursuant
to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant’s knowledge,
in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this
Form 10-K.   Yes  ̈    No x



Indicate by check mark whether the registrant has submitted
electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant
to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that
the registrant was required to submit and post such files). Yes  x    No  ̈



Indicate by check mark whether the registrant is a large accelerated
filer, an accelerated filer, or a non-accelerated filer or a smaller reporting company.  See definition of “large
accelerated filer”, “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the
Exchange Act. (Check one):



|Large accelerated filer  ̈                     |  | Accelerated filer x        
|--------------------------------------------- |  | ---------------------------
|Non-accelerated filer  ̈                       |  | Smaller reporting company  ̈
|(Do not check if a smaller reporting company) |  |                            



Indicate by check mark whether the registrant is a shell company
(as defined in Rule 12b-2 of the Exchange Act).Yes   ̈ No x



The aggregate market value of the voting and non-voting common
equity held by non-affiliates as of June 30, 2012, the last business day of the registrant’s most recently completed
second fiscal quarter, was approximately $192 million based on the closing sale price of the Company’s common stock on such
date of U.S. $1.68 per share, as reported by the NYSE MKT.



State the number of shares outstanding of each of the issuer’s
classes of common equity, as of the latest practicable date: As of March 22, 2013 there were 116,141,958 shares of common stock
outstanding.



Documents incorporated by reference: None.











EXPLANATORY NOTE



Elephant Talk Communications Corp.
(unless the context otherwise requires, includes its direct and indirect subsidiaries and is referred to as “Company,”
“we,” “us” or “our”) is filing this Amendment No. 1 (the “Amendment No. 1”) to
its Annual Report on Form 10-K for the fiscal year ended December 31, 2012 which was originally filed on April 2, 2013
(the “Original Filing”), to include reference to certain registration statements on Form S-8 and Form S-3 in the Consent
of Independent Registered Public Accounting Firm filed as Exhibit 23.1.



This Amendment
No. 1 amends and restates in its entirety Item 15 “Exhibits, Financial Statement Schedules”.  This Amendment does
not affect any other parts of, or exhibits to, the Original Filing.



Except as expressly
stated in this Amendment No.1, this Amendment No. 1 continues to speak as of the date of the Original Filing, and we have not updated
the disclosure contained in the Amendment No. 1 to reflect events that have occurred since the filing of the Original Filing. 
Accordingly, this Amendment No. 1 must be read in conjunction with our other filings, if any, made with the Securities and Exchange
Commission (“SEC”) subsequent to the filing of the Original Filing, including amendments to those filings, if any.













Part IV



ITEM 15. Exhibits, Financial Statement Schedules



The following exhibits are filed with this Report.



|Number |  | Description                                                                                                                                                                                                                                                                     
|------ |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|       |  |                                                                                                                                                                                                                                                                                 
|3.1    |  | Amended and Restated Articles of Incorporation (1)                                                                                                                                                                                                                              
|       |  |                                                                                                                                                                                                                                                                                 
|3.2    |  | Amended and Restated By-Laws (2)                                                                                                                                                                                                                                                
|       |  |                                                                                                                                                                                                                                                                                 
|3.3    |  | Amended and Restated Articles of Incorporation, filed with the State of California on June 10, 2008. (3)                                                                                                                                                                        
|       |  |                                                                                                                                                                                                                                                                                 
|3.4    |  | Agreement and Plan of Merger between Elephant Talk Communication Corp, a Delaware corporation and Elephant Talk Communications, Inc., a California corporation, Incorporated by reference to Appendix A to the Company's Definitive Proxy Statement filed on July 26, 2011. (24)
|       |  |                                                                                                                                                                                                                                                                                 
|3.5    |  | Certificate of Merger (24)                                                                                                                                                                                                                                                      
|       |  |                                                                                                                                                                                                                                                                                 
|3.6    |  | Certificate of Incorporation of Elephant Talk Communication Corp., a Delaware corporation, incorporated by reference to Appendix B to the Company's Definitive Proxy Statement filed on July 26, 2011. (24)                                                                     
|       |  |                                                                                                                                                                                                                                                                                 
|3.7    |  | Bylaws of Elephant Talk Communication Corp., a Delaware corporation, incorporated by reference to Appendix C to the Company's Definitive Proxy Statement filed on July 26, 2011. (24)                                                                                           
|       |  |                                                                                                                                                                                                                                                                                 
|10.1   |  | Stock Purchase Agreement dated June 30, 2005, by and among the Company and Rising Water Capital, A.G. (4)                                                                                                                                                                       
|       |  |                                                                                                                                                                                                                                                                                 
|10.2   |  | Convertible Promissory Note dated December 15, 2005, by the Company, in favor of Rising Water Capital, A.G. (5)                                                                                                                                                                 
|       |  |                                                                                                                                                                                                                                                                                 
|10.3   |  | Equity Transfer Agreement, dated January 4, 2006, by and among Zhongrun Chuangtou Technology Co.  Ltd. and Guangdong Guangxiang Network Information Co., Ltd (6)                                                                                                                
|       |  |                                                                                                                                                                                                                                                                                 
|10.4   |  | Exclusive Technical Consulting  and Services Agreement, dated January 2, 2006, by and among Jinfuyi Technology (Beijing) Co., Ltd. and Beijing Chinawind Communication Information Technology Co., Ltd. (6)                                                                     
|       |  |                                                                                                                                                                                                                                                                                 
|10.5   |  | Convertible Promissory Note dated May 26, 2006, by the Company, in favor of Rising Water Capital, A.G. (7)                                                                                                                                                                      
|       |  |                                                                                                                                                                                                                                                                                 
|10.6   |  | Agreement of Purchase and Sale, dated November 16, 2006, by and among the Company, Elephant Talk Europe Holding B.V. and Beltrust A.G. (8)                                                                                                                                      
|       |  |                                                                                                                                                                                                                                                                                 
|10.7   |  | Form of Common Stock Purchase Agreement, dated August 31, 2007, by and among the Company and certain investors. (9)                                                                                                                                                             
|       |  |                                                                                                                                                                                                                                                                                 
|10.8   |  | Settlement Agreement, entered by and between the Company and Rising Water Capital AG.  (10)                                                                                                                                                                                     
|       |  |                                                                                                                                                                                                                                                                                 
|10.9   |  | Loan Agreement by and between the Company and QAT II Investments dated January 27, 2009(11)                                                                                                                                                                                     





|10.10 |  | Loan Agreement by and between the Company and QAT II Investments dated February 15, 2009(12)
|----- |  | --------------------------------------------------------------------------------------------
|      |  |                                                                                             
|10.11 |  | Loan Agreement by and between the Company and QAT II Investments dated February 23, 2009(12)
|      |  |                                                                                             
|10.12 |  | Loan Agreement by and between the Company and QAT II Investments dated March 31, 2009(12)   















|10.13 |  | Security Agreement, entered into by and between the Company and QAT II Investments (12)                                                                                                                              
|----- |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|      |  |                                                                                                                                                                                                                      
|10.14 |  | Loan Agreement by and between the Company and QAT II Investments dated May 27, 2009(13)                                                                                                                              
|      |  |                                                                                                                                                                                                                      
|10.15 |  | Contract for the Supply of Operation and Technical Services through a Comprehensive Technological Platform between Vizzavi Espana S.L. and the Company(14)                                                           
|      |  |                                                                                                                                                                                                                      
|10.16 |  | Collaboration Agreement by and between ValidSoft Limited and the Company(15)                                                                                                                                         
|      |  |                                                                                                                                                                                                                      
|10.17 |  | Loan Agreement by and between the Company and QAT II Investments dated July 1, 2009(16)                                                                                                                              
|      |  |                                                                                                                                                                                                                      
|10.18 |  | Amendments to Loan Agreements dated January 27, 2009, February 15, 2009, March 4, 2009, March 31, 2009, May 4, 2009, and May 27, 2009 by and between QAT II Investments and the Company(16)                          
|      |  |                                                                                                                                                                                                                      
|10.19 |  | Side Agreement by and between ValidSoft Limited and the Company(17)                                                                                                                                                  
|      |  |                                                                                                                                                                                                                      
|10.20 |  | Extension Agreement by and between ValidSoft Limited and the Company(17)                                                                                                                                             
|      |  |                                                                                                                                                                                                                      
|10.21 |  | Amendment to Loan Agreements dated January 27, 2009, February 15, 2009, March 4, 2009, March 31, 2009, May 4, 2009, May 27, 2009, July 1, 2009 and July 8, 2009 by and between QAT II Investments and the Company(18)
|      |  |                                                                                                                                                                                                                      
|10.22 |  | Letter Agreement by and between ValidSoft Limited and the Company(19)                                                                                                                                                
|      |  |                                                                                                                                                                                                                      
|10.23 |  | Heads of Terms Agreement by and between ValidSoft Limited and the Company(20)                                                                                                                                        
|      |  |                                                                                                                                                                                                                      
|10.24 |  | Loan Agreement by and between the Company and QAT II Investments dated February 3, 2010(21)                                                                                                                          
|      |  |                                                                                                                                                                                                                      
|10.25 |  | Loan Agreement by and between the Company and QAT II Investments dated February 24, 2009 (22)                                                                                                                        



|10.26 |  | Sale and Purchase Agreement, dated March 17, 2010, by and among the Company. and the shareholders of ValidSoft Limited other than Enterprise Ireland (23)
|----- |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------
|      |  |                                                                                                                                                          
|10.27 |  | Sale and Purchase Agreement, dated March 17, 2010, by and the Company and Enterprise Ireland(23)                                                         
|      |  |                                                                                                                                                          
|10.28 |  | Securities Purchase Agreement by and among the Company and certain purchasers dated March 29, 2012(25)                                                   
|      |  |                                                                                                                                                          
|10.29 |  | Form of Secured Convertible Note issued to certain purchasers dated March 29, 2012(25)                                                                   
|      |  |                                                                                                                                                          
|10.30 |  | Security Agreement by and among the Company and its subsidiaries and certain purchasers dated March 29, 2012(25)                                         
|      |  |                                                                                                                                                          
|10.31 |  | Form of Escrow Agreement by and among the Company, certain purchasers and Wells Fargo Bank, National Association dated March 29, 2012(25)                
|      |  |                                                                                                                                                          
|10.32 |  | Subsidiary Guaranty by and among the company and its subsidiaries and certain purchasers dated March 29, 2012(25)                                        
|      |  |                                                                                                                                                          
|10.33 |  | Registration Rights Agreement by and among the Company and certain purchasers dated March 29, 2012(25)                                                   
|      |  |                                                                                                                                                          
|14.1  |  | Code of Ethics (1)                                                                                                                                       
|      |  |                                                                                                                                                          
|21.1  |  | Subsidiaries of the Registrant (*)                                                                                                                       
|      |  |                                                                                                                                                          
|23.1  |  | Consent of independent registered public accounting firm BDO USA, LLP (****)                                                                             













|31.1 |  | Certification of the Company’s Chief Executive Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 (****)(**)
|---- |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|     |  |                                                                                                                                                                           
|31.2 |  | Certification of the Company’s Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 (****)(**)
|     |  |                                                                                                                                                                           
|32.1 |  | Certification of the Company’s Chief Executive Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (****)(**)
|32.2 |  | Certification of the Company’s Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (****)(**)



|101.INS |  | XBRL Instance Document (***)                                
|------- |  | ------------------------------------------------------------
|        | 
|101.SCH |  | XBRL Taxonomy Extension Schema Document (***)               
|        | 
|101.CAL |  | XBRL Taxonomy Extension Calculation Linkbase Document (***) 
|        | 
|101.DEF |  | XBRL Taxonomy Extension Definition Linkbase Document (***)  
|        | 
|101.LAB |  | XBRL Taxonomy Extension Label Linkbase Document (***)       
|        | 
|101.PRE |  | XBRL Taxonomy Extension Presentation Linkbase Document (***)





| | * | Previously filed as an exhibit to our Annual Report on Form 10-K filed on April 2, 2013.
| | - | ----------------------------------------------------------------------------------------



| | ** | A signed original of this written statement has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.
| | -- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | ***  | XBRL (Extensible Business Reporting Language) information is furnished
and not filed or a part of a registration statement or prospectus for purposes of Sections 11 or 12 of the Securities Act
of 1933, as amended, is deemed not filed for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, and
otherwise is not subject to liability under these sections.
| | ---- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| |      |                                                                                                                                                                                                                                                                                                                                                                                         
| | **** | Filed herein                                                                                                                                                                                                                                                                                                                                                                            



| | (1) | Filed as part of our Definitive Proxy Statement on Schedule 14A on December 28, 2007.
| | --- | -------------------------------------------------------------------------------------



| | (2) | Filed as an Exhibit to our Current Report on Form 8-K on January 22, 2008.
| | --- | --------------------------------------------------------------------------



| | (3) | Filed as an Exhibit to our Current Report on Form 8-K on June 12, 2008.
| | --- | -----------------------------------------------------------------------



| | (4) | Filed as an Exhibit to our Current Report on Form 8-K on July 7, 2005.
| | --- | ----------------------------------------------------------------------



| | (5) | Filed as an Exhibit to our Current Report on Form 8-K on December 16, 2005.
| | --- | ---------------------------------------------------------------------------



| | (6) | Filed as an Exhibit to our Current Report on Form 8-K on January 13, 2006.
| | --- | --------------------------------------------------------------------------



| | (7) | Filed as an Exhibit to our Current Report on Form 8-K on June 5, 2006.
| | --- | ----------------------------------------------------------------------



| | (8) | Filed as an Exhibit to our Current Report on Form 8-K on December 1, 2006.
| | --- | --------------------------------------------------------------------------



| | (9) | Filed as an Exhibit to our Current Report on Form 8-K on November 19, 2007.
| | --- | ---------------------------------------------------------------------------



| | (10) | Filed as an Exhibit to our Current Report on Form 8-K on June 12, 2008.
| | ---- | -----------------------------------------------------------------------



| | (11) | Filed as an Exhibit to our Current Report on Form 8-K on February 2, 2009.
| | ---- | --------------------------------------------------------------------------















| | (12) | Filed as an Exhibit to our Current Report on Form 8-K on April 9, 2009.
| | ---- | -----------------------------------------------------------------------



| | (13) | Filed as an Exhibit to our Current Report on Form 8-K on June 1, 2009.
| | ---- | ----------------------------------------------------------------------



| | (14) | Filed as an Exhibit to our Current Report on
    Form 8-K on June 4, 2009 and amended by a Current Report on Form 8-K filed September 17, 2009.
| | ---- | -----------------------------------------------------------------------------------------------------------------------------------------------



| | (15) | Filed as an Exhibit to our Current Report on Form 8-K on June 24, 2009.
| | ---- | -----------------------------------------------------------------------



| | (16) | Filed as an Exhibit to our Current Report on Form 8-K on July 2, 2009.
| | ---- | ----------------------------------------------------------------------



| | (17) | Filed as an Exhibit to our Current Report on Form 8-K on July 8, 2009.
| | ---- | ----------------------------------------------------------------------



| | (18) | Filed as an Exhibit to our Current Report on Form 8-K on July 21, 2009.
| | ---- | -----------------------------------------------------------------------



| | (19) | Filed as an Exhibit to our Current Report on Form 8-K on August 6, 2009.
| | ---- | ------------------------------------------------------------------------



| | (20) | Filed as an Exhibit to our Current Report on Form 8-K on November 6, 2009.
| | ---- | --------------------------------------------------------------------------



| | (21) | Filed as an Exhibit to our Current Report on Form 8-K on February 18, 2010.
| | ---- | ---------------------------------------------------------------------------



| | (22) | Filed as an Exhibit to our Current Report on Form 8-K on February 26, 2010.
| | ---- | ---------------------------------------------------------------------------



| | (23) | Filed as an Exhibit to our Current Report on Form 8-K on March 23, 2010.
| | ---- | ------------------------------------------------------------------------



| | (24) | Filed as an Exhibit to our Current Report on Form 8-K on October 4, 2011.    
| | ---- | -----------------------------------------------------------------------------
| |      |                                                                              
| | (25) | Fields as Exhibits to our Annual Report on Form 10-K filed on March 30, 2012.













SIGNATURES



In accordance with the Exchange Act, this report has been signed
below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.



|                     | ELEPHANT TALKCOMMUNICATIONS CORP.
|-------------------- | ---------------------------------
|                     |                                  
|Date: April 25, 2013 | By:                              
|                     | Name:                            
|                     | Title:                           



In accordance with the Exchange Act, this report has been signed
below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.



|Person                    |  | Capacity                                                                     |  | Date          
|------------------------- |  | ---------------------------------------------------------------------------- |  | --------------
|                          |  |                                                                              |  |               
|/s/ Steven van der Velden |  | Chairman of the Board and Director
        (Principal Executive Officer)     |  | April 25, 2013
|Steven van der Velden     |  |                                                                              |  |               
|                          |  |                                                                              |  |               
|/s/ Mark Nije             |  | Chief Financial Officer
        (Principal Financial and Accounting Officer) |  | April 25, 2013
|Mark Nije                 |  |                                                                              |  |               
|                          |  |                                                                              |  |               
|/s/ Johan Dejager         |  | Director                                                                     |  | April 25, 2013
|Johan Dejager             |  |                                                                              |  |               
|                          |  |                                                                              |  |               
|/s/ Rijkman Groenink      |  | Director                                                                     |  | April 25, 2013
|Rijkman Groenink          |  |                                                                              |  |               
|                          |  |                                                                              |  |               
|/s/ Phil Hickman          |  | Director                                                                     |  | April 25, 2013
|Phil Hickman              |  |                                                                              |  |               
|                          |  |                                                                              |  |               
|/s/ Charles Levine        |  | Director                                                                     |  | April 25, 2013
|Charles Levine            |  |                                                                              |  |