Exhibit (a)(6)

                               [LEXENT LETTERHEAD]


August 24, 2001

To:     Valued Employee/Option Holder

From:   Heather Sisler
        Manager of Corporate Services

Re:     Amendment and Supplement to the Offer to Exchange, dated August 17, 2001


     We have  previously  sent to you an  Offer  to  Exchange  and a  Letter  of
Transmittal  relating to our offer to exchange  outstanding  options to purchase
shares of our common  stock  having an exercise  price of $13.50 or more for new
options with an exercise  price to be  determined.  This  memorandum  amends and
supplements information contained in the Offer to Exchange, as follows:

     The offer expires at 12:00 midnight on September 14, 2001.  Therefore,  you
must deliver,  before 12:00 midnight,  New York, New York time, on September 14,
2001, a properly completed and duly executed Letter of Transmittal and any other
documents  required  by the letter of  transmittal  to Lexent  Inc.,  Attention:
Heather Sisler,  Manager of Corporate Services,  Three New York Plaza, New York,
New York 10004  (facsimile:  (212)  981-9417).  If the offer is  extended  by us
beyond September 14, 2001, you must deliver these documents to Ms. Sisler before
the extended expiration of the offer.

     You may withdraw your  election to tender  options at any time before 12:00
midnight, New York, New York time, on September 14, 2001. If we extend the offer
beyond that time,  you may withdraw your election to tender  options at any time
until the extended expiration of the offer. In addition, you may withdraw at any
time after 12:00  midnight,  New York,  New York time, on October 15, 2001 if we
have not yet closed the offer and cancelled your tendered options.  For purposes
of the offer, the definition of the term "business day" means any day other than
a Saturday,  Sunday or U.S. Federal holiday and consists of the time period from
12:01 a.m. through 12:00 midnight.

     You should be aware that promptly  after the  expiration  of the offer,  we
will notify each tendering option holder indicating the number of shares subject
to  the  options  that  we  have  accepted  for  exchange  and  cancelled,   the
corresponding  number of shares  that will be subject to the new options and the
expected grant date of the new options.

     In addition,  please note that the safe harbor under the Private Securities
Litigation  Reform Act of 1995 is not available with respect to statements  that
are made in connection with the offer.





     The Offer to Exchange is further amended to add certain  summary  financial
information concerning Lexent Inc. as set forth below:




                                                                Year Ended December 31,            Six Months Ended
                                                                ----------------------             ----------------
                                                              1999                  2000             June 30, 2001
                                                              ----                  ----             -------------

Results of Operations:                                             (in thousands, except per share data)

                                                                                                   

Revenues.......................................              $150,862              $295,993              $139,149
Operating income (loss)........................                16,214                20,561               (19,734)
Net income (loss)..............................              $  7,952              $  8,576              $(11,050)
                                                             ========              ========              ========
Net income (loss) per share:
   Basic.......................................              $   0.32              $   0.27              $   0.27
                                                             ========              ========              ========
   Diluted.....................................              $   0.24              $   0.22              $   0.27
                                                             ========              ========              ========
Weighted average shares:
   Basic.......................................                22,721                30,839                41,307
                                                               ======                ======                ======
   Diluted.....................................                33,531                38,266                     *
                                                               ======                ======                ======


                                                                   As of December 31,                 As of June 30,
                                                                   -----------------                  -------------
                                                              1999                  2000                   2001
                                                              ----                  ----                   ----
Financial Position:


Current assets.................................               $53,654              $181,702              $60,052

Noncurrent assets..............................                 6,725                17,299               20,987

Current liabilities............................                27,957                40,891               33,711

Noncurrent liabilities.........................                16,216                $7,629                4,172

Book value per common share....................                 $0.16                 $3.66                $3.45



*Anti-dilutive, therefore, not presented.

     You  should  consider  the  information  set  forth in this  Amendment  and
Supplement and the  previously  supplied  information  contained in the Offer to
Exchange in deciding  whether to  participate in the offer (or whether to modify
or rescind your election to participate in the offer if you have already made an
election).  Any questions or requests for  assistance  or  additional  copies of
documents referred to in this Amendment and Supplement may be directed to:

                                   Lexent Inc.
                            Attention: Heather Sisler
                          Manager of Corporate Services
                              Three New York Plaza
                            New York, New York 10004
                            Telephone: (212) 981-9429
                            Facsimile: (212) 981-9417