Question: PostNL is a mail, parcel and e-commerce corporation listed at a stock exchange formerly known as what?

Context paragraphs:
Pittsburgh Stock Exchange: The Pittsburgh Stock Exchange was a large regional stock market located in Pittsburgh, Pennsylvania from November 11, 1864 (originally as Thurston's Oil Exchange) until closing on August 23, 1974.  It was alternatively named the Pittsburgh Coal Exchange starting on May 27, 1870, and the Pittsburgh Oil Exchange on July 21, 1878 with 180 members.  On July 25, 1896 the Exchange formally took the name Pittsburgh Stock Exchange though it had been referred to by that name since the spring of 1894.  The Exchange, like many modern day exchanges, was forced to close during sharp economic crashes or crises.  On December 24, 1969 The Philadelphia-Baltimore-Washington Stock Exchange bought the Pittsburgh Stock Exchange.  At its height the exchange traded over 1,200 companies, but by the last trading day in 1974 only Pittsburgh Brewing Company, Williams & Company and Westinghouse remained listed.

Euronext Amsterdam: Euronext Amsterdam is a stock exchange based in Amsterdam.  Formerly known as the Amsterdam Stock Exchange, it merged on 22 September 2000 with the Brussels Stock Exchange and the Paris Stock Exchange to form Euronext.

China Concepts Stock: China Concepts Stock is a set of stock of companies whose assets or earnings have significant activities in mainland China.  The People's Republic of China is undergoing major financial transformation, and many leading mainland-based companies have chosen to list themselves overseas to gain access to foreign investor capital.  Currently, there are China Concepts Stocks listed on several major stock exchanges around the globe, including the Hong Kong Stock Exchange (HKEx), Singapore Exchange (SGX), New York Stock Exchange (NYSE), NASDAQ, NYSE MKT (formerly known as the American Stock Exchange), London Stock Exchange (LSE), Euronext, and the Tokyo Stock Exchange (TSE).

Philadelphia Stock Exchange: Philadelphia Stock Exchange (PHLX), now known as NASDAQ OMX PHLX, is the oldest stock exchange in the United States.  It is now owned by The NASDAQ OMX Group.  Founded in 1790, the exchange was originally named the Board of Brokers of Philadelphia, also referred to as the Philadelphia Board of Brokers.  In 1875, the Board of Brokers changed its name to the Philadelphia Stock Exchange.  The exchange merged with the Baltimore Stock Exchange in 1949 and was named the Philadelphia-Baltimore Stock Exchange.  It merged with the Washington Stock Exchange in 1954, becoming known as the Philadelphia-Baltimore-Washington Stock Exchange (often abbreviated as PBW).  In 1969, the exchange acquired the Pittsburgh Stock Exchange.  In 2007, PHLX was purchased by NASDAQ for $652 million.

PostNL: PostNL (] ) is a mail, parcel and e-commerce corporation with operations in the Netherlands, Germany, Italy, Belgium, and the United Kingdom.  It is listed at Euronext Amsterdam.  The company was known as TNT N.V. until TNT Express demerged from it in May 2011, and the remainder of the company was renamed PostNL.

UP Stock Exchange: UP Stock Exchange Limited (Formerly known as The U.P.Stock Exchange Association Ltd., Kanpur), is a Kanpur-based stock exchange.It occupies one of the prominent place among the Stock Exchanges in India.  The Exchange was inaugurated on 27 August 1982 by the then Finance Minister Pranab Mukherjee.  It plays an important role in the development of the capital market of North India.  Initially, it had only 350 members which has grown up to 540 at present.  UPSE is the only Stock Exchange in whole of Uttar Pradesh and the membership of this Stock Exchange is not restricted to the territories of Uttar Pradesh only.  Members living outside Kanpur has contributed a lot by creating the equity cult in whole of the Uttar Pradesh.

Hong Kong Stock Exchange: The Stock Exchange of Hong Kong Limited (SEHK) is a stock exchange located in Hong Kong.  It is East Asia's and Asia's third largest stock exchange in terms of market capitalization behind the Tokyo Stock Exchange and Shanghai Stock Exchange, and the sixth largest in the world before Euronext.  As of 31 October 2016, SEHK had 1,955 listed companies, 989 of which are from mainland China, 856 from Hong Kong and 110 from abroad (e.g. Taiwan, Malaysia, United States, Singapore, etc.) Hong Kong Exchanges and Clearing owns SEHK and is itself listed on SEHK.

BSE DCI: The Botswana Stock Exchange Domestic Company Index or BSE DCI, and the Botswana Stock Exchange Foreign Company Index or BSE FCI are the principal stock indices of the Botswana Stock Exchange.  Each is calculated from the weighted averages of the values of their category of stock.  A third index value, the All Company Index, is derived from a weighted average of the two indices.  On the Botswana Stock Exchange, a company that is designated as a "foreign company" is a company that is "dual-listed", meaning that it is also listed on another stock exchange.

Nasdaq, Inc.: Nasdaq, Inc. is an American multinational financial services corporation that owns and operates (and is listed on) the NASDAQ (formerly National Association of Securities Dealers Automated Quotations) stock market and eight European stock exchanges, namely Armenian Stock Exchange, Copenhagen Stock Exchange, Helsinki Stock Exchange, Iceland Stock Exchange, Riga Stock Exchange, Stockholm Stock Exchange, Tallinn Stock Exchange, and NASDAQ OMX Vilnius.  It is headquartered in New York City, and its president and chief executive officer is Adena Friedman.

Nigerian Stock Exchange: The Nigerian Stock Exchange (NSE) was established in 1960 as the Lagos Stock Exchange.  In 1977, its name was changed from the Lagos Stock Exchange to the Nigerian Stock Exchange.  As at March 7, 2017, it has 176 listed companies with a total market capitalization of about N8.5 trillion.  All listings are included in the Nigerian Stock Exchange All Shares index.  In terms of market capitalization, the Nigerian Stock Exchange is the third largest stock exchange in Africa.

Supporting paragraphs: PostNL Euronext Amsterdam
Answer: Amsterdam Stock Exchange