SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  SCHEDULE 13G
                                 


             INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT
           TO RULES 13d-1(b)(c), AND (d) AND AMENDMENTS THERETO FILED
                            PURSUANT TO RULE 13d-2(b)

                               (Amendment No. 4)*



                               Internap Corporation
-------------------------------------------------------------------------------
                                (Name of Issuer)



                                  Common stock
-------------------------------------------------------------------------------
                         (Title of Class of Securities)



                                    45885A409
-------------------------------------------------------------------------------
                                 (CUSIP Number)


                                December 31, 2018
-------------------------------------------------------------------------------
            (Date of Event Which Requires Filing of this Statement)


     Check the  appropriate  box to  designate  the rule  pursuant to which this
Schedule is filed:

          [X]  Rule 13d-1(b)

          [_]  Rule 13d-1(c)

          [_]  Rule 13d-1(d)


-----------
   * The  remainder  of this  cover  page  shall be filled  out for a  reporting
     person's  initial  filing on this form with respect to the subject class of
     securities,  and for any subsequent amendment containing  information which
     would alter the disclosures provided in a prior cover page.

     The  information  required in the remainder of this cover page shall not be
     deemed to be "filed"  for the purpose of Section 18 of the  Securities 
     Exchange Act of 1934 or otherwise  subject to the  liabilities of that 
     section of the Act but  shall be  subject  to all other  provisions  of the
     Act (however, see the Notes).

     


<PAGE> 











CUSIP No. 45885A409                   13G                    



1.   NAME OF REPORTING PERSONS
     
     Avenir Corporation

     I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)
                      
     54-1146619                  
_______________________________________________________________________________
2.   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                                                 (a)  [_]
                                                                 (b)  [X]

_______________________________________________________________________________
3.   SEC USE ONLY



_______________________________________________________________________________
4.   CITIZENSHIP OR PLACE OF ORGANIZATION

             State of Virginia, USA
_______________________________________________________________________________
  NUMBER OF    5.   SOLE VOTING POWER

   SHARES           0
               ________________________________________________________________
BENEFICIALLY   6.   SHARED VOTING POWER

  OWNED BY          1,305,017
               ________________________________________________________________
    EACH       7.   SOLE DISPOSITIVE POWER
  REPORTING         
                    0            
________________________________________________________________
   PERSON      8.   SHARED DISPOSITIVE POWER

    WITH            1,305,017
_______________________________________________________________________________
9.   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

             1,305,017

_______________________________________________________________________________
10.  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

             NA                                                      [_]

_______________________________________________________________________________
11.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

             5.12%

_______________________________________________________________________________
12.  TYPE OF REPORTING PERSON

             IA

_______________________________________________________________________________
                    


<PAGE>         


CUSIP No. 45885A409                   13G                    



1.   NAME OF REPORTING PERSONS
         
     Peter C. Keefe     
_______________________________________________________________________________
2.   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                                                 (a)  [_]
                                                                 (b)  [X]

_______________________________________________________________________________
3.   SEC USE ONLY



_______________________________________________________________________________
4.   CITIZENSHIP OR PLACE OF ORGANIZATION

             UNITED STATES OF AMERICA
_______________________________________________________________________________
  NUMBER OF    5.   SOLE VOTING POWER

   SHARES           0
               ________________________________________________________________
BENEFICIALLY   6.   SHARED VOTING POWER

  OWNED BY          1,305,017
               ________________________________________________________________
    EACH       7.   SOLE DISPOSITIVE POWER
  REPORTING         
                    0             
________________________________________________________________
   PERSON      8.   SHARED DISPOSITIVE POWER

    WITH            1,305,017
_______________________________________________________________________________
9.   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

             1,305,017

_______________________________________________________________________________
10.  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

             NA                                                      [_]

_______________________________________________________________________________
11.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

             5.12%

_______________________________________________________________________________
12.  TYPE OF REPORTING PERSON

             IN

_______________________________________________________________________________
                    


<PAGE>         


CUSIP No. 45885A409                   13G                    



1.   NAME OF REPORTING PERSONS
     
     James H. Rooney
_______________________________________________________________________________
2.   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                                                 (a)  [_]
                                                                 (b)  [X]

_______________________________________________________________________________
3.   SEC USE ONLY



_______________________________________________________________________________
4.   CITIZENSHIP OR PLACE OF ORGANIZATION

             UNITED STATES OF AMERICA
_______________________________________________________________________________
  NUMBER OF    5.   SOLE VOTING POWER

   SHARES           0
               ________________________________________________________________
BENEFICIALLY   6.   SHARED VOTING POWER

  OWNED BY          1,305,017
               ________________________________________________________________
    EACH       7.   SOLE DISPOSITIVE POWER
  REPORTING         
                    0             
________________________________________________________________
   PERSON      8.   SHARED DISPOSITIVE POWER

    WITH            1,305,017
_______________________________________________________________________________
9.   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

             1,305,017

_______________________________________________________________________________
10.  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES

             NA                                                      [_]

_______________________________________________________________________________
11.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

             5.12%

_______________________________________________________________________________
12.  TYPE OF REPORTING PERSON

             IN

_______________________________________________________________________________
                    


<PAGE>         


CUSIP No. 45885A409                  13G                    

_______________________________________________________________________________
Item 1(a).  Name of Issuer:

             Internap Corporation

_______________________________________________________________________________
Item 1(b).  Address of Issuer's Principal Executive Offices:
             
             12120 Sunset Hills Road
             Suite 300
             Reston, VA 20190

_______________________________________________________________________________
Item 2(a).  Name of Person Filing:

             This Schedule 13G ("Schedule") is being filed on behalf of Avenir 
Corporation ("Avenir"), a Virginia  corporation, Peter C. Keefe and James H. 
Rooney (Messrs. Keefe and Rooney along with Avenir are "Reporting Persons").

Avenir is an investment adviser registered under the Investment Advisers Act of 
1940, as amended ("Advisers Act").

Messrs. Keefe and Rooney are portfolio managers and shareholders of Avenir.

_______________________________________________________________________________
Item 2(b).  Address of Principal Business Office, or if None, Residence:

             1775 Pennsylvania Avenue NW, Suite 650
             Washington, DC  20006

_______________________________________________________________________________
Item 2(c).  Citizenship:

             State of Virginia, USA
_______________________________________________________________________________
Item 2(d).  Title of Class of Securities:
 
             Common Stock
_______________________________________________________________________________
Item 2(e).  CUSIP Number:

             45885A409
_______________________________________________________________________________
Item 3.     If This Statement  is Filed  Pursuant to  Rule 13d-1(b), or 13d-2(b)
            or (c), Check Whether the Person Filing is a:

     (a)  [_]  Broker or dealer registered under Section 15 of the Exchange Act.

     (b)  [_]  Bank as defined in Section 3(a)(6) of the Exchange Act.

     (c)  [_]  Insurance  company as defined in Section 3(a)(19) of the Exchange
               Act.

     (d)  [_]  Investment  company  registered under Section 8 of the Investment
               Company Act.

     (e)  [X]  An investment adviser in accordance with Rule 13d-1(b)(1)(ii)(E);
                    
     (f)  [_]  An employee  benefit plan or endowment  fund in  accordance  with
               Rule 13d-1(b)(1)(ii)(F);

     (g)  [ ]  A parent  holding  company or control  person in accordance  with
               Rule 13d-1(b)(1)(ii)(G);
              
     (h)  [_]  A savings  association  as defined in Section 3(b) of the Federal
               Deposit Insurance Act;

     (i)  [_]  A  church  plan  that  is  excluded  from  the  definition  of an
               investment  company  under  Section  3(c)(14)  of the  Investment
               Company Act;

     (j)  [_]  Group, in accordance with Rule 13d-1(b)(1)(ii)(J).

     If this statement is filed pursuant to Rule 13d-1(c), check this box.   [_]


<PAGE>


CUSIP No. 45885A409                 13G                    

Item 4.  Ownership.

     Provide  the  following  information  regarding  the  aggregate  number and
percentage of the class of securities of the issuer identified in Item 1.

     (a)  Amount beneficially owned:

             1,305,017

     (b)  Percent of class:

             5.12%

     (c)  Number of shares as to which such person has:

          (i)   Sole power to vote or to direct the vote 

                0

          (ii)  Shared power to vote or to direct the vote 

                1,305,017

          (iii) Sole power to dispose or to direct the disposition of  

                0

          (iv)  Shared power to dispose or to direct the disposition of

                1,305,017
_______________________________________________________________________________
Item 5.  Ownership of Five Percent or Less of a Class.
         
         If this statement is being filed to report the fact that as of the 
         date hereof the reporting person has ceased to be the beneficial owner
         of more than five percent of the class of securities, check the 
         following. [ ]
         
_______________________________________________________________________________
Item 6.  Ownership of More Than Five Percent on Behalf of Another Person.

              NA
_______________________________________________________________________________
Item 7.  Identification and Classification of the Subsidiary Which Acquired the
         Security Being Reported on by the Parent Holding Company.

              NA
_______________________________________________________________________________
Item 8.  Identification and Classification of Members of the Group.

              NA
_______________________________________________________________________________
Item 9.  Notice of Dissolution of Group.

              NA
_______________________________________________________________________________
Item 10.  Certifications.

     (a)  The  following  certification  shall be included if the  statement  is
          filed pursuant to Rule 13d-1(b):

          "By signing  below I certify  that,  to the best of my  knowledge  and
          belief, the securities referred to above were acquired and are held in
          the ordinary course of business and were not acquired and not held for
          the  purpose  of or with the effect of  changing  or  influencing  the
          control of the issuer of the  securities and were not acquired and are
          not held in  connection  with or as a participant  in any  transaction
          having such purpose or effect."


<PAGE>


CUSIP No. 45885A409                  13G                    

                                    SIGNATURE

     After  reasonable  inquiry and to the best of my  knowledge  and belief,  I
certify that the information  set forth in this statement is true,  complete and
correct.


                                                   February 13, 2019
                                             -----------------------------------
                                                       Date

                                                   /s/ James H. Rooney
                                             -----------------------------------
                                                       Signature

                                                 James H. Rooney, President
                                             -----------------------------------
                                                       Name/Title

                                                   /s/ Peter C. Keefe
                                             -----------------------------------
                                                       Signature

                                                     Peter C. Keefe
                                             -----------------------------------
                                                       Name/Title

                                                   /s/ James H. Rooney
                                             -----------------------------------
                                                       Signature

                                                     James H. Rooney
                                             -----------------------------------
                                                       Name/Title


 



<PAGE>

CUSIP No. 45885A409                 13G 



                                 EXHIBIT A


The undersigned agree that this Schedule 13G, dated February 13, 2019, relating 
to the Common Stock of Internap Corporation, shall be filed on behalf of the 
undersigned.




                                          Avenir Corporation

                                                   /s/ James H. Rooney
                                             -----------------------------------
                                                       Signature

                                                 James H. Rooney, President
                                             -----------------------------------
                                                       Name/Title

                                                   /s/ Peter C. Keefe
                                             -----------------------------------
                                                       Signature

                                                     Peter C. Keefe
                                             -----------------------------------
                                                       Name/Title

                                                   /s/ James H. Rooney
                                             -----------------------------------
                                                       Signature

                                                     James H. Rooney
                                             -----------------------------------
                                                       Name/Title