Document:

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                             INLAND NORTHWEST BANK

                        NON-QUALIFIED STOCK OPTION PLAN

                        (Approved by Directors 7/21/92)
                              (Revised 12/21/93)
                              (Revised 12/21/99)

                                Exhibit 10.2.3
<PAGE>

                               TABLE OF CONTENTS

1.   Purpose..............................................................  1

2.   Shares Subject to the Plan...........................................  1

3.   Administration of the Plan...........................................  1

4.   Duties of Board......................................................  1

5.   Grant of Options.....................................................  1
          (a)  Determine Optionees........................................  1
          (b)  Determine Exercisability...................................  1
          (c)  Determine Terms of Option Agreement........................  1

6.   Terms and Conditions of Options......................................  1
          (a)  Option Price...............................................  2
          (b)  Number of Shares...........................................  2
          (c)  Exercise of Option.........................................  2

7.   Specific Terms of the Option Agreement...............................  2
          (a)  Withholding Taxes..........................................  2
          (b)  Termination of Employment..................................  2
               (i)    Commission of a Crime...............................  3
               (ii)   Beach of Fiduciary Obligation.......................  3
               (iii)  Breach of Employment Terms..........................  3
          (c)  Nontransferability.........................................  3
          (d)  Adjustments................................................  3
          (e)  No Claim to Stock Option...................................  3
          (f)  No Rights as Shareholder...................................  3
          (g)  No Right to Continued Employment...........................  3
          (h)  Unsecured Obligation.......................................  3
          (i)  Compliance With Other Laws and Regulations.................  3
          (j)  Restrictions...............................................  4
          (k)  Investment Representation and Restrictions.................  4
          (l)  Governing Law..............................................  4
          (m)  Attorneys' Fees............................................  4
          (n)  Entire Agreement; Amendment................................  4
          (o)  Dissolution of Bank or Issuer..............................  4

8.   Determination of Fair Market Value...................................  5

9.   Reservation of Shares of Stock.......................................  5

10.  Amendment and Discontinuance.........................................  5

11.  Effective Date of the Plan...........................................  5

<PAGE>

                             INLAND NORTHWEST BANK

                        NON-QUALIFIED STOCK OPTION PLAN

     1.   Purpose.  The purpose of this Plan is to provide a means whereby
INLAND NORTHWEST BANK (the "Bank") may, through the grant of non-qualified stock
options to Key Employees, as defined below, attract and retain persons of
ability as employees and motivate such employees to exert their best efforts on
behalf of the Bank. The term "Key Employees" means employees of the Bank or
other individuals rendering services to the Bank who, in the judgment of the
Board referred to in Section 3 below, are considered especially important to the
future of the Bank.

     2.   Shares Subject to the Plan.  The number of shares which may be issued
pursuant to the options granted by the Board under this Plan shall not exceed
40,000 shares of the Common Stock of Northwest Bancorporation, Inc., the parent
company of the Bank and the Issuer herein, pursuant to authorization granted by
that company ("Stock"). Such shares are authorized and unissued shares until the
option is exercised. Any shares subject to an option which expires for any
reason or is terminated unexercised as to such shares may again be subject to an
option under this Plan.

     3.   Administration of the Plan.  The Plan shall be administered by the
Bank's Board of Directors (the "Board").

     4.   Duties of Board.  The Board shall interpret the Plan, prescribed,
amend and rescind any rules and regulations necessary or appropriate for the
administration of the Plan, and make such other determinations and take such
other action as it deems necessary or advisable. Any interpretation,
determination or other action made or taken by the Board shall be final, binding
and conclusive.

     5.   Grant of Options.  Subject to the provisions of this Plan, the Board
shall:

          (a)  Determine Optionees.  Determine and designate, from time to time,
     those Key Employees to whom options are to be granted and the number of
     shares of Stock subject to such options;

          (b)  Determine Exercisability.  Determine the time or times when and
     the manner in which each option shall be exercisable and the duration of
     the exercise period; and

          (c)  Determine Terms of Option Agreement.  Determine, pursuant to
     Sections 6 and 7, all terms and conditions regarding each option issued
     pursuant to this Plan.

     The Board shall have the sole and absolute discretion to issue options for
differing numbers of shares and on differing terms even if said options are
granted at the same time.

     6.   Terms and Conditions of Options.  Each option granted under the Plan
shall be evidenced by an Option Agreement in a form determined by the Board and
shall set forth the following:

                                       1

<PAGE>

          (a)  Option Price.  The per share option price shall be one hundred
     percent (100%) of the fair market value of said share on the date the
     option is granted.

          (b)  Number of Shares.  Each option shall state the total number of
     shares of Stock to which it pertains.

          (c)  Exercise of Option.  The Option Agreement may permit the Optionee
     to exercise the option in installments. The Option Agreement shall specify
     when and/or on what events or conditions the right to exercise shall accrue
     and the period for which the right to exercise any option or installment
     thereof shall remain open; provided, however, that said period shall in no
     event be greater than ten (10) years from the date of grant.

     7.   Specific Terms of the Option Agreement.  Unless the Board determines
otherwise, each Option Agreement issued pursuant to this Plan shall contain the
following provisions:

          (a)  Withholding Taxes.  Whenever shares of stock are issued pursuant
     to this Plan, the Board shall (i) require the recipient of the stock to
     remit to the Bank an amount sufficient to satisfy all withholding and
     employment taxes, and (ii) may make such other arrangements for the payment
     of taxes, including bonusing the Optionee the amount thereof, as the Board
     shall determine.

          (b)  Termination of Employment.  If an Optionee's employment with the
     Bank terminates for any reason other than a discharge by the Bank "for
     cause" or termination as a result of the Optionee's death or disability,
     then, subject to Section 7(o), the Optionee may, within a period of ninety
     (90) days beginning the day following the date of such termination of
     employment, exercise any rights under outstanding Option Agreement(s), to
     the extent the Optionee was entitled to exercise such rights on the date of
     such employment termination. In the event of the death or disability of the
     Optionee while employed by the Bank, the Personal Representative of the
     Optionee's estate (or any other legal successor to the Optionee) may,
     subject to Section 7(o), within a period ending on the anniversary date of
     the Optionee's date of death or disability, exercise any rights under
     outstanding Option Agreement(s), to the extent the Optionee was entitled to
     exercise such rights on the date of the Optionee's death or disability. For
     the purposes of the foregoing, Optionee's employment shall be considered to
     have terminated by reason of disability if Optionee, because of a physical
     or mental disability, will be unable to perform the duties of his or her
     customary position of employment with the Bank for an indefinite period
     which the Board determines to be of a long and continued duration and the
     date of disability shall be the date of said determination by the Board. If
     the Optionee's employment is terminated by the Bank "for cause," all rights
     under any Option Agreement, both accrued and unaccrued, shall terminate and
     lapse. Thus, upon the date of a termination by the Bank "for cause," no
     unexercisable option or increment thereof shall thereafter become
     exercisable and no further exercises with respect to outstanding and
     exercisable options or increments thereof may occur. For the purpose of
     this Section 7(b), any of the following shall constitute a basis for a "for
     cause" termination:

                                       2

<PAGE>

               (i)  Commission of a Crime.  Commission by the Optionee of any
          crime involving moral turpitude or any felony.

               (ii)  Beach of Fiduciary Obligation.  The Optionee's wilful
          breach of any fiduciary obligation owed to the Bank.

               (iii)  Breach of Employment Terms.  The Optionee's failure (for
          reasons other than death or disability) to diligently and
          satisfactorily discharge any material obligation of employment.

          (c)  Nontransferability.  All rights exercisable under Option
     Agreements granted pursuant to this Plan shall be nontransferable by the
     Optionee, otherwise than by will or the laws of descent and distribution,
     and shall be exercisable during the Optionee's lifetime only by Optionee.

          (d)  Adjustments.  In the event of any change in the outstanding
     shares of Stock by reason of any stock dividend or split, recapitalization,
     reclassification, merger, consolidation, combination or exchange of shares,
     or other similar corporate change, then, if the Board shall determine, in
     its sole discretion, that such change necessarily or equitably requires an
     adjust in the number of shares subject to each outstanding option and the
     option prices or in the maximum number of shares subject to this Plan, such
     adjustments shall be made by the Board and shall be conclusive and binding
     for all purposes of this Plan.

          (e)  No Claim to Stock Option.  No employee or other person shall have
     any claim or right to be granted options under this Plan.

          (f)  No Rights as Shareholder.  An Optionee shall have no rights as a
     shareholder with respect to any Stock subject to an Option Agreement prior
     to the date of issuance to the Optionee of a certificate or certificates
     for such Stock.

          (g)  No Right to Continued Employment.  No option hereunder shall
     confer upon Optionee any right with respect to continuance of employment by
     the Bank, nor interfere in any way with the right of the Bank to terminate
     the Optionee's employment at any time.

          (h)  Unsecured Obligation.  Optionees under this Plan shall not have
     any interest in any fund or specific asset of the Bank by reason of this
     Plan. No trust fund shall be created in connection with this Plan or any
     award hereunder, and there shall be no required funding of amounts which
     may become payable to any Optionee.

          (i)  Compliance With Other Laws and Regulations.  All options
     hereunder and any obligation of the Issuer to sell and deliver shares
     hereunder, shall be subject to all applicable Federal and State laws, rules
     and regulations and to such approvals by any government or regulatory
     agency as may, in the option of the Issuer's legal counsel, be required. In
     addition, the Issuer shall not be required to issue or deliver any
     certificates for Stock prior to (i) the listing of such shares on any stock
     exchange on which the Stock may then be listed and (ii) the completion of
     any registration or qualification of such shares under any federal or state
     law, or any rule or regulation of any government body which the Issuer,

                                       3

<PAGE>

     on the advice of its legal counsel, shall determine to be necessary or
     advisable. An Option hereunder may not be exercised and the Bank shall have
     no liability under the Option Agreement or this Plan if its exercise, or
     the receipt of Stock pursuant thereto, would, in the opinion of the
     Issuer's legal counsel, be contrary to any applicable law.

          (j)  Restrictions.  All Stock acquired pursuant to Options issued
     hereunder shall be subject to any and all federal and state securities law
     restrictions as well as other restrictions applicable to the Issuer's
     common stock.

          (k)  Investment Representation and Restrictions.  The Board may
     require Optionee to furnish, prior to the issuance of any shares upon the
     exercise of all or any part of an option, an agreement (in such form as the
     Board may specify) in which Optionee represents that the shares acquired
     are being acquired for investment and not with a view to the sale or
     distribution thereof.

          (l)  Governing Law.  Any Option Agreement shall be interpreted,
     construed and governed according to the laws of the State of Washington. In
     the event of a dispute in which court proceedings occur, the venue for such
     dispute shall be Spokane County, Washington.

          (m)  Attorneys Fees.  In the event that any party to an Option
     Agreement shall bring an action in connection with the performance, breach
     or interpretation of such Agreement, or in any way relating to the
     transactions contemplated thereby, the prevailing party in such action
     shall be entitled to recover from the losing party all reasonable costs and
     expenses of litigation, including attorneys' fees, court costs, costs of
     investigation, accounting and other cost reasonably related to such
     litigation, in such amount as may be determined in the sole discretion of
     the court having jurisdiction over such action.

          (n)  Entire Agreement; Amendment.  The Option Agreement shall
     constitute the entire agreement between the parties thereto respecting
     options thereunder and may not be modified or amended, except by a written
     instrument signed by each of the parties thereto expressing such
     modification or amendment. The Option Agreement shall completely supersede
     any other agreement (oral or written) between the parties thereto
     respecting the options contemplated thereunder.

          (o)  Dissolution of Bank or Issuer.  As soon as practicable after the
     date of approval of the legal dissolution or liquidation of the Bank or
     Issuer, or a merger or consolidation in which the Bank or Issuer will not
     be the surviving corporation, the Board shall give written notice thereof
     to the Optionee. The Optionee shall have ten (10) business days from the
     date of receipt of said notice to exercise any option to the extent
     Optionee was entitled to exercise such right on the date of said approval.
     Except as provided in the sentence immediately preceding, upon approval of
     a transaction described in this Section 7(o), any and all rights under all
     Option Agreements issued pursuant to this Plan shall terminate. For
     purposes of the foregoing, the Personal Representative of a deceased
     Optionee's estate (or other legal successor) shall be considered the
     Optionee with respect to rights which, pursuant to Section 7(b) were
     exercisable on the date specified by this paragraph.

                                       4

<PAGE>

     8.   Determination of Fair Market Value.  Whenever this Plan or an Option
Agreement shall require the determination of fair market value of the Issuer's
stock, said determination shall be made by the Board and when made shall be
binding and conclusive on all parties.

     9.   Reservation of Shares of Stock.  The Issuer may, during the term of
this Plan, from time to time, reserve and keep available, or seek from any
regulatory body having jurisdiction any requisite authority necessary to issue
and to sell, the number of shares of Stock that shall be sufficient to satisfy
the requirements of this Plan. The inability of the Issuer to obtain, from any
regulatory body having jurisdiction, the authority deemed necessary by legal
counsel for the Issuer to lawfully issue and sell its Stock hereunder shall
relieve the Bank of any liability with respect to the failure to issue or sell
Stock as to which the requisite authority has not been obtained.

     10.  Amendment and Discontinuance.  The Board may amend, suspend or
discontinue the Plan. Except as authorized herein, the Board may not alter or
impair any Option Agreement previously granted under the Plan, unless the
consent of the Optionee is obtained.

     11.  Effective Date of the Plan.  The initial effective date of the Plan is
July 21, 1992, and continues in effect as revised December 21, 1993 and December
21, 1999.

                                      INLAND NORTHWEST BANK

                                      By: /s/ William E. Shelby
                                          --------------------------------------
                                          Chairman of the Board of Directors

                                       5<PAGE>
                                                                    EXHIBIT 4.2A

                         ADVANCED RADIO TELECOM CORP.

     The powers, designations, preferences, and relative participating, optional
or other special rights, and the qualifications, limitations, or restrictions of
such preferences and/or rights of each class of stock or series of any class are
set forth in the Certificate of Incorporation. The issuer will furnish a copy of
the Certificate of Incorporation to the holder of this certificate without
charge upon request.

     THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN REGISTERED
UNDER THE SECURITIES ACT OF 1933 OR THE SECURITIES LAWS OF ANY STATE AND MAY NOT
BE SOLD OR OTHERWISE DISPOSED OF EXCEPT PURSUANT TO AN EFFECTIVE REGISTRATION
STATEMENT UNDER SUCH ACT AND APPLICABLE STATE SECURITIES LAWS OF AN APPLICABLE
EXEMPTION TO THE REGISTRATION REQUIREMENTS OF SUCH ACT OR SUCH LAWS.

     THE SECURITIES REPRESENTED BY THIS CERTIFICATE WERE ISSUED PURSUANT TO AND
THE HOLDER HEREOF IS ENTITLED TO CERTAIN RIGHTS AND SUBJECT TO CERTAIN
OBLIGATIONS CONTAINED IN A STOCK PURCHASE AGREEMENT DATED AS OF JUNE 1, 1999. A
COPY OF WHICH IS AVAILABLE FOR INSPECTION AT THE PRINCIPAL OFFICE OF THE ISSUER
HEREOF, AND WILL BE FURNISHED WITHOUT CHARGE TO THE HOLDER OF SUCH SECURITIES
UPON REQUEST.

     THE SECURITIES REPRESENTED BY THE CERTIFICATE ARE SUBJECT TO A REGISTRATION
RIGHTS AGREEMENT DATED AS OF JUNE 1, 1999, AS AMENDED FROM TIME TO TIME. A COPY
THEREOF IS AVAILABLE FOR INSPECTION FROM THE COMPANY.

     THE SECURITIES REPRESENTED BY THIS CERTIFICATE ARE SUBJECT TO A STANDSTILL
AGREEMENT DATED JUNE 1, 1999 AND MAY NOT BE TRANSFERRED EXCEPT IN COMPLIANCE
WITH THE TERMS THEREOF.

     The following abbreviations, when used in the inscription on the face of
this certificate, shall be construed as though they were written out in full
according to applicable laws or regulations:

<TABLE>
<S>                                                              <C>
     TEN COM - as tenants in common                               UNIF GIFT MIN ACT .............Custodian.............
     TEN ENT - as tenants by the entireties                                            (Cust)                 Minor
     JT TEN  - as joint owners with right                                           under Uniform Gifts to Minors
               of ownership and not as                                              Act ...............................
               tenants in common                                                                   (State)
                                                                  UNIF TRF MIN ACT  ........Custodian (until age.......)
                                                                                     (Cust)
                                                                                    .........under Uniform Transfers
                                                                                    (Minor)
                                                                                    to Minors Act.......................
                                                                                                         (State)
</TABLE>

    Additional abbreviations may also be used though not in the above list.

     FOR VALUE RECEIVED, __________________________________________ hereby sell,
assign and transfer unto

PLEASE INSERT SOCIAL SECURITY OR OTHER
    IDENTIFYING NUMBER OF ASSIGNEE
--------------------------------------
|                                    |
|                                    |
--------------------------------------

--------------------------------------------------------------------------------
 (PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING ZIP CODE OF ASSIGNEE)

--------------------------------------------------------------------------------

--------------------------------------------------------------------------------

                                                                          Shares
--------------------------------------------------------------------------
of the preferred stock represented by the within Certificate, and do hereby
irrevocably constitute and appoint

                                                                        Attorney
------------------------------------------------------------------------
to transfer the said stock on the books of the within named Corporation with
full power of substitution in the premises.

Dated
     ------------------------------------

                                  X___________________________________________

                                  X___________________________________________
                           NOTICE: THE SIGNATURE(S) TO THE ASSIGNMENT MUST
                                   CORRESPOND WITH THE NAME(S) AS WRITTEN UPON
                                   THE FACT OF THE CERTIFICATE IN EVERY
                                   PARTICULAR, WITHOUT ALTERATIONS OR
                                   ENLARGEMENT OR ANY CHANGE WHATEVER.

Signature(s) Guaranteed
<PAGE>

                       [LOGO OF ADVANCED RADIO TELECOM]
                          Advanced Radio Telecom/TM/

                         ADVANCED RADIO TELECOM CORP.

             INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE
        THIS CERTIFICATE IS TRANSFERABLE IN BOSTON, MA OR NEW YORK, NY

SERIES A CONVERTIBLE                         SEE REVERSE FOR CERTAIN DEFINITIONS
  PREFERRED STOCK

This Certifies that

is the owner of

 FULLY PAID AND NONASSESSABLE SHARES OF SERIES A CONVERTIBLE PREFERRED STOCK,
                         $.001 PAR VALUE PER SHARE OF

                         ADVANCED RADIO TELECOM CORP.

transferable on the books of the Corporation by the holder hereof in person or
by duly authorized attorney upon surrender of this certificate properly
endorsed. This certificate is not valid until countersigned by the Transfer
Agent and registered by the Registrar.

     WITNESS this facsimile seal of the Corporation and the facsimile signatures
of its duly authorized officers.

     Dated:

/s/ Henry C. Hirsch                                 /s/ Thomas M. Walker
--------------------------                          ----------------------------
CHAIRMAN, PRESIDENT AND                                     SECRETARY
CHIEF EXECUTIVE OFFICER

COUNTERSIGNED AND REGISTERED:
BankBoston, M.A.
TRANSFER AGENT AND REGISTRAR

BY /s/ illegible
  --------------------------
  AUTHORIZED SIGNATURE

<PAGE>

                                                                    EXHIBIT 4.2B

                         ADVANCED RADIO TELECOM CORP.

     The powers, designations, preferences, and relative participating, optional
or other special rights, and the qualifications, limitations, or restrictions of
such preferences and/or rights of each class of stock or series of any class are
set forth in the Certificate of Incorporation. The issuer will furnish a copy of
the Certificate of Incorporation to the holder of this certificate without
charge upon request.

     THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN REGISTERED
UNDER THE SECURITIES ACT OF 1933 OR THE SECURITIES LAWS OF ANY STATE AND MAY NOT
BE SOLD OR OTHERWISE DISPOSED OF EXCEPT PURSUANT TO AN EFFECTIVE REGISTRATION
STATEMENT UNDER SUCH ACT AND APPLICABLE STATE SECURITIES LAWS OF AN APPLICABLE
EXEMPTION TO THE REGISTRATION REQUIREMENTS OF SUCH ACT OR SUCH LAWS.

     THE SECURITIES REPRESENTED BY THIS CERTIFICATE WERE ISSUED PURSUANT TO AND
THE HOLDER HEREOF IS ENTITLED TO CERTAIN RIGHTS AND SUBJECT TO CERTAIN
OBLIGATIONS CONTAINED IN A STOCK PURCHASE AGREEMENT DATED AS OF JUNE 1, 1999. A
COPY OF WHICH IS AVAILABLE FOR INSPECTION AT THE PRINCIPAL OFFICE OF THE ISSUER
HEREOF, AND WILL BE FURNISHED WITHOUT CHARGE TO THE HOLDER OF SUCH SECURITIES
UPON REQUEST.

     THE SECURITIES REPRESENTED BY THE CERTIFICATE ARE SUBJECT TO A REGISTRATION
RIGHTS AGREEMENT DATED AS OF JUNE 1, 1999, AS AMENDED FROM TIME TO TIME. A COPY
THEREOF IS AVAILABLE FOR INSPECTION FROM THE COMPANY.

     THE SECURITIES REPRESENTED BY THIS CERTIFICATE ARE SUBJECT TO A STANDSTILL
AGREEMENT DATED JUNE 1, 1999 AND MAY NOT BE TRANSFERRED EXCEPT IN COMPLIANCE
WITH THE TERMS THEREOF.

     The following abbreviations, when used in the inscription on the face of
this certificate, shall be construed as though they were written out in full
according to applicable laws or regulations:

<TABLE>
<S>                                                              <C>
     TEN COM - as tenants in common                               UNIF GIFT MIN ACT .............Custodian.............
     TEN ENT - as tenants by the entireties                                            (Cust)                 Minor
     JT TEN  - as joint owners with right                                           under Uniform Gifts to Minors
               of ownership and not as                                              Act ...............................
               tenants in common                                                                   (State)
                                                                  UNIF TRF MIN ACT  ........Custodian (until age.......)
                                                                                     (Cust)
                                                                                    .........under Uniform Transfers
                                                                                    (Minor)
                                                                                    to Minors Act.......................
                                                                                                         (State)
</TABLE>

    Additional abbreviations may also be used though not in the above list.

     FOR VALUE RECEIVED, __________________________________________ hereby sell,
assign and transfer unto

PLEASE INSERT SOCIAL SECURITY OR OTHER
    IDENTIFYING NUMBER OF ASSIGNEE
--------------------------------------
|                                    |
|                                    |
--------------------------------------

--------------------------------------------------------------------------------
 (PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING ZIP CODE OF ASSIGNEE)

--------------------------------------------------------------------------------

--------------------------------------------------------------------------------

                                                                          Shares
--------------------------------------------------------------------------
of the preferred stock represented by the within Certificate, and do hereby
irrevocably constitute and appoint

                                                                        Attorney
------------------------------------------------------------------------
to transfer the said stock on the books of the within named Corporation with
full power of substitution in the premises.

Dated
     ------------------------------------

                                  X___________________________________________

                                  X___________________________________________
                           NOTICE: THE SIGNATURE(S) TO THE ASSIGNMENT MUST
                                   CORRESPOND WITH THE NAME(S) AS WRITTEN UPON
                                   THE FACT OF THE CERTIFICATE IN EVERY
                                   PARTICULAR, WITHOUT ALTERATIONS OR
                                   ENLARGEMENT OR ANY CHANGE WHATEVER.

Signature(s) Guaranteed
<PAGE>

                       [LOGO OF ADVANCED RADIO TELECOM]
                          Advanced Radio Telecom/TM/

                         ADVANCED RADIO TELECOM CORP.

             INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE
        THIS CERTIFICATE IS TRANSFERABLE IN BOSTON, MA OR NEW YORK, NY

    SERIES B NON-VOTING                      SEE REVERSE FOR CERTAIN DEFINITIONS
CONVERTIBLE PREFERRED STOCK

This Certifies that

is the owner of

    FULLY PAID AND NONASSESSABLE SHARES OF SERIES B NON-VOTING CONVERTIBLE
                 PREFERRED STOCK, $.001 PAR VALUE PER SHARE OF

                         ADVANCED RADIO TELECOM CORP.

transferable on the books of the Corporation by the holder hereof in person or
by duly authorized attorney upon surrender of this certificate properly
endorsed. This certificate is not valid until countersigned by the Transfer
Agent and registered by the Registrar.

     WITNESS this facsimile seal of the Corporation and the facsimile signatures
of its duly authorized officers.

     Dated:

/s/ Henry C. Hirsch                                 /s/ Thomas M. Walker
--------------------------                          ----------------------------
CHAIRMAN, PRESIDENT AND                                     SECRETARY
CHIEF EXECUTIVE OFFICER

COUNTERSIGNED AND REGISTERED:
BankBoston, M.A.
TRANSFER AGENT AND REGISTRAR

BY /s/ illegible
  --------------------------
  AUTHORIZED SIGNATURE

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