SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13D

UNDER THE SECURITIES AND EXCHANGE ACT OF 1934
(Amendment No. 4)*

Internap Corporation

(Name of Issuer)

Common Stock

(Title of Class of Securities)

45885A300

(CUSIP Number)

Peter C. Keefe
Avenir Corporation
1775 Pennsylvania Ave NW
Suite 650
Washington DC, 20006
(202) 659-4427

(Name, Address and Telephone Number of Person
Authorized to Receive Notices and Communications)

December 21, 2016

(Date of Event Which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition which is the subject of this Schedule 13D, and is filing this schedule because of Rule 13d-1(e), 13d-1(f) or 13d-1(g), check the following box: [ ]

NOTE: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See Rule 240.13d-7 for other parties to whom copies are to be sent.

*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 disclosures provided in a prior cover page.

The information required on 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 ("Act") 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).


SCHEDULE 13D

------------------                                            ------------------
CUSIP No. 45885A300
------------------                                            ------------------
---------- ---------------------------------------------------------------------
     1      NAME OF REPORTING PERSON
            I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

            Avenir Corporation
            I.D. No. 54-1146619
---------- ---------------------------------------------------------------------
     2      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP             (a) [ ]
                                                                         (b) [X]
---------- ---------------------------------------------------------------------
     3      SEC USE ONLY
---------- ---------------------------------------------------------------------
     4      SOURCE OF FUNDS*

            OO
---------- ---------------------------------------------------------------------
     5      CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO
            ITEMS 2(d) or 2(e) [ ]
---------- ---------------------------------------------------------------------
     6      CITIZENSHIP OR PLACE OF ORGANIZATION

            United States
-------------------- -------- --------------------------------------------------
                         7      SOLE VOTING POWER

                                0
NUMBER              -------- ---------------------------------------------------
OF SHARES                8      SHARED VOTING POWER
BENEFICIALLY
OWNED BY                        2,856,619
EACH                -------- ---------------------------------------------------
REPORTING                9      SOLE DISPOSITIVE POWER
PERSON WITH
                                0
---------- ---------------------------------------------------------------------
                         10     SHARED DISPOSITIVE POWER

                                2,856,619
----------- --------------------------------------------------------------------
     11     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH PERSON

            2,856,619
----------- --------------------------------------------------------------------
     12     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
            SHARES* [ ]
----------- --------------------------------------------------------------------
     13     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

            4.90%
----------- --------------------------------------------------------------------
     14     TYPE OF REPORTING PERSON*

            IA
----------- --------------------------------------------------------------------


SCHEDULE 13D

------------------                                            ------------------
CUSIP No. 45885A300
------------------                                            ------------------
---------- ---------------------------------------------------------------------
     1      NAME OF REPORTING PERSON
            I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

            Peter C. Keefe
---------- ---------------------------------------------------------------------
     2      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP             (a) [ ]
                                                                         (b) [X]
---------- ---------------------------------------------------------------------
     3      SEC USE ONLY
---------- ---------------------------------------------------------------------
     4      SOURCE OF FUNDS*

            OO
---------- ---------------------------------------------------------------------
     5      CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO
            ITEMS 2(d) or 2(e) [ ]
---------- ---------------------------------------------------------------------
     6      CITIZENSHIP OR PLACE OF ORGANIZATION

            United States
-------------------- -------- --------------------------------------------------
                         7      SOLE VOTING POWER

                                0
NUMBER              -------- ---------------------------------------------------
OF SHARES                8      SHARED VOTING POWER
BENEFICIALLY
OWNED BY                        2,856,619
EACH                -------- ---------------------------------------------------
REPORTING                9      SOLE DISPOSITIVE POWER
PERSON WITH
                                0
---------- ---------------------------------------------------------------------
                         10     SHARED DISPOSITIVE POWER

                                2,856,619
----------- --------------------------------------------------------------------
     11     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH PERSON

            2,856,619
----------- --------------------------------------------------------------------
     12     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
            SHARES* [ ]
----------- --------------------------------------------------------------------
     13     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

            4.90%
----------- --------------------------------------------------------------------
     14     TYPE OF REPORTING PERSON*

            IN
----------- --------------------------------------------------------------------


SCHEDULE 13D

------------------                                            ------------------
CUSIP No. 45885A300
------------------                                            ------------------
---------- ---------------------------------------------------------------------
     1      NAME OF REPORTING PERSON
            I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)

            James H. Rooney
---------- ---------------------------------------------------------------------
     2      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP             (a) [ ]
                                                                         (b) [X]
---------- ---------------------------------------------------------------------
     3      SEC USE ONLY
---------- ---------------------------------------------------------------------
     4      SOURCE OF FUNDS*

            OO
---------- ---------------------------------------------------------------------
     5      CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO
            ITEMS 2(d) or 2(e) [ ]
---------- ---------------------------------------------------------------------
     6      CITIZENSHIP OR PLACE OF ORGANIZATION

            United States
-------------------- -------- --------------------------------------------------
                         7      SOLE VOTING POWER

                                0
NUMBER              -------- ---------------------------------------------------
OF SHARES                8      SHARED VOTING POWER
BENEFICIALLY
OWNED BY                        2,856,619
EACH                -------- ---------------------------------------------------
REPORTING                9      SOLE DISPOSITIVE POWER
PERSON WITH
                                0
---------- ---------------------------------------------------------------------
                         10     SHARED DISPOSITIVE POWER

                                2,856,619
----------- --------------------------------------------------------------------
     11     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH PERSON

            2,856,619
----------- --------------------------------------------------------------------
     12     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
            SHARES* [ ]
----------- --------------------------------------------------------------------
     13     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

            4.90%
----------- --------------------------------------------------------------------
     14     TYPE OF REPORTING PERSON*

            IN
----------- --------------------------------------------------------------------


SCHEDULE 13D

------------------                                            ------------------
CUSIP No. 45885A300
------------------                                            ------------------

Item 1. Security and Issuer

This Schedule relates to the common stock of Internap Corporation, a Delaware
corporation ("Issuer"), which has its principal executive offices at One Ravinia
Drive, Suite 1300, Atlanta, Georgia, 30346. Unless the context otherwise
requires, references herein to "Securities" or "Shares" are to such common stock
of the Issuer.

Item 2. Identity and Background

This Schedule 13D ("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") and amends the
Schedule 13D filed on October 7, 2016.

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.

The bussiness address of the Reporting Persons is 1775 Pennsylvania Ave NW,
Suite 650, Washington, DC 20006.


Item 3. Source and Amount of Funds or Other Consideration.

The Securities of the Issuer were primarily acquired on behalf of the
investment advisory clients of Avenir under sole or shared discretionary
authority granted Avenir. In addition, Avenir and/or its principal officers
and employees purchased Shares in the Issuer for their personal accounts. The
aggregate amount of funds used to purchase the Securities reported in this
filing totaled approximately $19,855,886. In addition, none of the proceeds
used to purchase the Securities were expressly provided through borrowings,
though certain accounts managed by Avenir may carry margin balances from time
to time.

Item 4. Purpose of Transaction

Reporting Persons acquired the shares for investment purposes. Over time, the
Reproting Persons may seek to purchase additional shares or dispose of shares
as part of its ongoing portfolio management process. The Reporting Persons
reserve the right to be in contact with members of the Issuer's management,
the members of the Issuer's Board of Directors, other significant shareholders
and others regarding alternatives that the Issuer could employ to increase
shareholder value. In addition, the Reporting Persons may be in contact with
members of the Issuer's management, the members of the Issuer's Board of
Directors, other significant shareholders and others regarding the Reporting
Person's views on the long-term prospects of the Issuer.


Item 5.  Interest In Securities Of The Issuer

          (a) The aggregate number and percentage of Securities to which this
Schedule 13D relates is 2,856,619 shares of the common stock of the Issuer,
constituting approximately 4.9% of the 58,245,920 shares outstanding.

          (b) The Reporting Persons generally have shared power to dispose of
or to direct the disposition of the Securities held for discretionary accounts
of its investment clients, and may be granted the shared power to vote or
direct the vote of such Securities; such powers may be retained by or shared
with the respective clients for shared or non-discretionary accounts, for
which Avenir generally makes recommendations with respect thereto.

          (c) All purchase or sale transactions in the Securities for the past
60 days are on Schedule A.

          (d) The investment advisory clients of Avenir have the sole right to
receive and, subject to notice, to withdraw the proceeds from the sale of the
Securities, and the sole power to direct the receipt of dividends from any of
the Securities held for their respective accounts.  Such clients may also
terminate the investment advisory agreements without penalty upon appropriate
notice.

          (e) Not applicable.

Item 6.  Contracts, Arrangements, Understandings or Relationships with Respect
to Securities of the Issuer

The powers of disposition with respect to Securities owned by discretionary
private accounts of Avenir are established in written investment advisory
agreements between clients and Avenir, which are entered into in the normal
and usual course of the business of Avenir as a registered investment advisor
and which are generally applicable to all securities purchased for the benefit
of each such discretionary private account.  There are no special or different
agreements relating to the Securities of the Issuer.

The written investment advisory agreements with clients do not contain
provisions relating to borrowing of funds to finance the acquisition of the
Securities, acquisition of control, transfer of securities, joint ventures,
or any of the other transactions listed in the instructions to Item 7 of
Schedule 13D other than voting of proxies.  In connection with voting, Avenir
may be allowed or directed to vote the proxies received by accounts classified
as "discretionary" or "shared" accounts; such authority is generally retained
by the clients for accounts classified as "non-discretionary".

Item 7.  Material to be Filed as an Exhibit

Exhibit A: Agreement between the Reporting Persons to File Jointly


SCHEDULE 13D

------------------                                            ------------------
CUSIP No. 45885A300
------------------                                            ------------------

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.


                                                 December 23, 2016
                                          -----------------------------------
                                                   Date


                                          Avenir Corporation


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

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

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

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

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

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


SCHEDULE 13D

CUSIP No. 45885A300

SCHEDULE A

PURCHASE ("BY") AND SALE ("SL") TRANSACTIONS, TRANSFER OUTS ("LO") AND TRANSFER INS ("LI") SINCE THE MOST RECENT FILING OF SCHEDULE 13D

All purchases and sales listed below were normal, open-market transactions.

                                                Average
Transaction                                     Per
Type       Date       Quantity   Total Price    Share
SL      10/26/2016      69,573    96,030.41     1.38
SL      10/27/2016       8,860    12,203.28     1.38
SL      10/28/2016       5,440     7,513.66     1.38
SL      10/31/2016       2,240     2,926.33     1.31
SL      11/1/2016       13,615    16,759.69     1.23
SL      11/4/2016       11,686    13,703.06     1.17
SL      11/7/2016       20,600    21,990.60     1.07
SL      11/8/2016       52,955    56,865.35     1.07
SL      11/9/2016       64,744    69,565.30     1.07
LO      11/21/2016       2,422     2,688.42     1.11
SL      12/15/2016       6,970     6,109.61     0.88
LO      12/20/2016       1,500     1,695.00     1.13
SL      12/21/2016     421,858   660,220.92     1.57
SL      12/22/2016     277,915   458,270.61     1.65


SCHEDULE 13D

------------------                                            ------------------
CUSIP No. 45885A300
------------------                                            ------------------

                                   EXHIBIT A


The undersigned agree that this Schedule 13D, amendment number 4, dated
December 23, 2016, relating to the Common Stock of Internap Corporation, shall
be filed on behalf of the undersigned.




                                          Avenir Corporation


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

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

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

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

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

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

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