UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 4 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP ( ) Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instructions 1(b). 1. Name and Address of Reporting Person Mahoney, Michael J. Viatel, Inc. 685 Third Avenue New York, NY 10017 USA 2. Issuer Name and Ticker or Trading Symbol Viatel, Inc. VYTL 3. IRS or Social Security Number of Reporting Person (Voluntary) 4. Statement for Month/Year January 2001 5. If Amendment, Date of Original (Month/Year) 6. Relationship of Reporting Person(s) to Issuer (Check all applicable) (X) Director ( ) 10% Owner (X) Officer (give title below) ( ) Other (specify below) Chairman and Chief Executive Officer 7. Individual or Joint/Group Filing (Check Applicable Line) (X) Form filed by One Reporting Person ( ) Form filed by More than One Reporting Person

___________________________________________________________________________________________________________________________________ Table I -- Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned | ___________________________________________________________________________________________________________________________________| 1. Title of Security |2. |3. |4.Securities Acquired (A) |5.Amount of |6.Dir |7.Nature of Indirect | | Transaction | or Disposed of (D) | Securities |ect | Beneficial Ownership | | | | | Beneficially |(D)or | | | | | | | A/| | Owned at |Indir | | | Date |Code|V| Amount | D | Price | End of Month |ect(I)| | ___________________________________________________________________________________________________________________________________| Common Stock, $.01 par valu|111/1712/0|SP |-|~~100~~3,~~000~~209(1) |DA |$4.8409 |-258,478(2) |D |- | e per share |001 | | | | | | | | | -----------------------------------------------------------------------------------------------------------------------------------| ~~Common~~___________________________________________________________________________________________________________________________________| ~~Stock~~___________________________________________________________________________________________________________________________________ Table II -- Derivative Securitites Acquired, $Disposed of, or Beneficially Owned | ___________________________________________________________________________________________________________________________________| 1.01Title ~~par~~of ~~valu~~Derivative |2.Con- |3. |4. |5.Number of De |6.Date Exer|7.Title and Amount |8.Price|9.Number |10.|11.Nature of| Security |version |Transaction | rivative Secu |cisable and| of Underlying |of Deri|of Deriva |Dir|Indirect | |or Exer | | | rities Acqui |Expiration | Securities |vative |tive |ect|Beneficial | |cise | | | red(A) or Dis |Date(Month/20| |Secu |Securities |(D)|Ownership | |Price of| | | posed of(D) |Day/Year) |S |rity |Benefi |or | | |Deriva- |~~665,000~~ | | |Date |Expir| | |ficially |Ind| | |tive | | | | A/|Exer-|ation| Title and Number | |Owned at |ire| | |Secu- | | | | | D |cisa-|Date | of Shares | |End of |ct | | |rity |Date |Code|V| Amount | |ble | | | |Month |(I)| | ___________________________________________________________________________________________________________________________________| Time-based Options (Ri|$412.2200 |- |- |-|- - |A,D|(3) |10/23|Common Stock|120,000|- |120,000(4) e|D ~~per~~|- ~~share~~| ght to Buy) |00 | | | | | | |/01 | |(4) | | | | | -----------------------------------------------------------------------------------------------------------------------------------| ~~Common~~Time-based ~~Stock,~~Options (Ri|$5.0100 ~~par~~|- ~~valu~~|~~11/21/|S~~- |-|~~435,000~~- - |A,D|(3) |~~$4.33~~01/01|Common Stock|390,~~455~~000(|- |90,~~254~~000(14) |D |- | eght ~~per~~to ~~share~~Buy) |00 | | | | | | |/08 | |4) | | | | | -----------------------------------------------------------------------------------------------------------------------------------| ~~Common~~Time-based ~~Stock,~~Options (Ri|$5.0150 ~~par valu~~|- |- |-|- |- |A,D|(5) |01/01|Common Stock|90,000(|- |~~397~~90,~~593~~000(4) |ID |(2- | ght to Buy) | e| ~~per~~| ~~share~~| | | | |/08 | |4) | | | | | -----------------------------------------------------------------------------------------------------------------------------------| ~~Common~~Time-based ~~Stock,~~Options (Ri|$10.0125 ~~par valu~~|- |- |-|- |- |A,D|(6) |09/18|Common Stock|180,771|- |39180,~~297~~771(4) |ID |(3- | ght to Buy) | e| ~~per~~| ~~share~~| | | | |/08 | |(4) | | | | | -----------------------------------------------------------------------------------------------------------------------------------| ~~Common~~Time-based ~~Stock,~~Options (Ri|$22.01875 ~~par~~|- ~~valu~~|- |-|- - |A,D|(7) |01/01|Common Stock|52,278(|- |52,278(4) |D |- | ght to Buy) | e| ~~per~~| ~~share~~| | | | |/09 | |4) | | | | | -----------------------------------------------------------------------------------------------------------------------------------| ___________________________________________________________________________________________________________________________________| ___________________________________________________________________________________________________________________________________ Table II Time--based ~~Derivative~~Options ~~Securitites Acquired, Disposed of, or Beneficially Owned~~ (Ri| ~~___________________________________________________________________________________________________________________________________| 1~~$43.~~Title~~00 ~~of Derivative~~ |~~2.Con~~- |3.- |4. -|~~5.Number~~- of- De |~~6.Date Exer~~A,D|7.Title and Amount |8.Price|9.Number |10.|11.Nature of| Security |version |Transaction | rivative Secu |cisable and| of Underlying |of Deri|of Deriva |Dir|Indirect | |or Exer | | | rities Acqui |Expiration | Securities |vative |tive |ect|Beneficial | |cise | | | red(A8) ~~or Dis~~ |~~Date(Month~~06/01|Common Stock|~~Secu~~ 38,196(|~~Securities~~- |38,196(D4)~~|Ownership~~ |D |~~Price~~- of| |gnt |to ~~posed of(D~~Buy) |~~Day/Year)~~ | |~~rity~~ |~~Benefi~~ |or | | |~~Deriva-~~/09 | |4) | |~~Date~~ |~~Expir|~~ | |~~ficially~~ -----------------------------------------------------------------------------------------------------------------------------------|~~Ind|~~ |Time-based ~~|tive~~Options (Ri|$49.313 |- |- | ~~A/|Exer~~-|~~ation|~~- ~~Title~~- ~~and Number~~ | A,D|~~Owned~~(9) at |~~ire~~01/04|Common Stock| 411,000|~~Secu~~- |411,000(4) | ~~| | |~~ D |~~cisa~~-~~|Date~~ | ofght ~~Shares~~to |Buy) |~~End~~ of |ct | | |~~rity~~ |~~Date~~ |~~Code|V|~~ ~~Amount~~ |/00 |~~ble~~ |(4) | | |~~Month~~ |~~(I)|~~ | ~~___________________________________________________________________________________________________________________________________~~-----------------------------------------------------------------------------------------------------------------------------------| | | | | | | | | | | | | | | | ___________________________________________________________________________________________________________________________________|

Explanation of Responses: (1) Shares purchased through the Company's Employee Stock Purchase Plan at a 15% discount to the then current market price. (2) Of the total amount of Common Stock beneficially owned by reporting person, 198,859 shares are restricted stock. (3) All of these options are currently vested and exercisable. (4) All options vest and become exercisable upon a Change in Control of the Company. (5) Options to purchase shares of Common Stock vested and became exercisable as to 25% of these options on each of January 1, 1999, 2000 and 2001. The remainder will vest and become exercisable on January 1, 2002. (6) Options to purchase shares of Common Stock vested and became exercisable as to 33.34% of these options on September 18, 1999 and 33.33% of these options on September 18, 2000. The remainder will vest and become exercisable on September 18, 2001. (7) Options to purchase shares of Common Stock vested and became exercisable as to 33.34% of these options on January 1, 2000 and 33.33% on January 1, 2001. The remainder will vest and become exercisable on January 1, 2002. (8) Options to purchase shares of Common Stock vested and became exercisable as to 33.34% of these options on June 1, 2000 and the remainder will vest and become exercisable on each successive anniversary date thereafter to the extent of 33.33% of these options. (9) Options to purchase shares of Common Stock vested and became exercisable as to 33.34% of these options on January 4, 2001 and the remainder will vest and become exercisable on each successive anniversary date thereafter to the extent of 33.33% of these options. SIGNATURE OF REPORTING PERSON /s/ Michael J. Mahoney DATE February 9, 2001

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