Exhibit 99.1
                                 ------------


                                 UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, DC 20549
                              --------------------

                                   FORM 10-K

                                 ANNUAL REPORT
                        PURSUANT TO SECTIONS 13 OR 15(d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934

(Mark One)

[X]     ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE
ACT OF 1934

      For the fiscal year ended:   December 31, 2006
                                   -----------------

                                             or

[ ]     TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
EXCHANGE ACT OF 1934

      For the transition period from           to
                                     ---------    ---------

            Commission file number of Issuing Entity: 333-125902-65
                                                      -------------

                        Alternative Loan Trust 2006-4CB,
              Mortgage Pass-Through Certificates, Series 2006-4CB
              ---------------------------------------------------
           (Exact name of Issuing Entity as Specified in Its Charter)

                Commission file number of Depositor: 333-125902
                                                     ----------

                                  CWALT, Inc.
                                  -----------
             (Exact name of Depositor as Specified in Its Charter)

                          Countrywide Home Loans, Inc.
                          ----------------------------
              (Exact name of Sponsor as Specified in Its Charter)

         Delaware                                        87-0698307
-------------------------------             -----------------------------------
(State or Other Jurisdiction of             (I.R.S. Employer Identification No.
Incorporation or Organization of            of the Depositor)
the Depositor)

c/o   Countrywide Home Loans Servicing LP
      4500 Park Granada
      Calabasas, California                                91302
---------------------------------------      ----------------------------------
(Address of Principal Executive Offices                 (Zip Code)
of the Depositor)

Registrant's telephone number, including area code:   (818) 225-3000
                                                      --------------

Securities registered pursuant to Section 12(b) of the Act:  None
                                                             ----

Securities registered pursuant to Section 12(g) of the Act:  None
                                                             ----



<PAGE>


   Indicate by check mark if the registrant is a well-known seasoned issuer, as
defined in Rule 405 of the Securities Act.                     [  ] Yes  [X] No

   Indicate by check mark if the registrant is not required to file reports
pursuant to Section 13 or Section 15(d) of the Act.            [  ] Yes  [X] No

   Indicate by check mark whether the registrant: (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days.                      [X] Yes   [ ] No

   Indicate by check mark if disclosure of delinquent filers pursuant to Item
405 of Regulation S-K (ss.229.405 of this chapter) is not contained herein, and
will not be contained, to the best of registrant's knowledge, in definitive
proxy or information statements incorporated by reference in Part III of this
Form 10-K or any amendment to this Form 10-K.                  [X]

   Indicate by check mark whether the registrant is a large accelerated filer,
an accelerated filer, or a non-accelerated filer. See definition of
"accelerated filer and large accelerated filer" in Rule 12b-2 of the Exchange
Act. (Check one):

Large Accelerated Filer [  ]  Accelerated Filer [  ]  Non-Accelerated Filer [X]

   Indicate by check mark whether the registrant is a shell company (as defined
in Rule 12b-2 of the Exchange Act).                             [ ] Yes [X] No

   The Registrant has no voting or non-voting common equity held by
non-affiliates.


                                       2
<PAGE>


                      DOCUMENTS INCORPORATED BY REFERENCE

                                     None.

                                     * * *


      This Annual Report on Form 10-K (the "Report") is filed with respect to
the trust entitled Alternative Loan Trust 2006-4CB (the "Issuing Entity")
formed pursuant to the pooling and servicing agreement dated as of February 1,
2006 (the "Pooling and Servicing Agreement") among CWALT, Inc., as depositor
(the "Company"), Countrywide Home Loans, Inc., as a seller (a "Seller"), Park
Granada LLC, as a seller (a "Seller"), Park Sienna LLC, as a seller (a
"Seller"), Park Monaco Inc., as a seller (a "Seller"), Countrywide Home Loans
Servicing LP, as master servicer (the "Master Servicer"), and The Bank of New
York, as trustee (the "Trustee"), as amended by Omnibus Amendment No. 1, dated
February 1, 2006 ("Amendment No. 1"), for the issuance of Mortgage Pass-Through
Certificates, Series 2006-4CB (the "Certificates").


                                       3
<PAGE>


                                     PART I


Item 1.     Business.

            Omitted as permitted by Instruction J to Form 10-K.

Item 1A.    Risk Factors.

            Omitted as permitted by Instruction J to Form 10-K.

Item 1B.    Unresolved Staff Comments.

            Not Applicable.

Item 2.     Properties.

            Omitted as permitted by Instruction J to Form 10-K.

Item 3.     Legal Proceedings.

            Omitted as permitted by Instruction J to Form 10-K.

Item 4.     Submission of Matters to a Vote of Security Holders.

            Omitted as permitted by Instruction J to Form 10-K.


                                       4
<PAGE>


                                    PART II


Item 5.     Market for Registrant's Common Equity, Related Stockholder Matters
            and Issuer Purchases of Equity Securities.

            Omitted as permitted by Instruction J to Form 10-K.

Item 6.     Selected Financial Data.

            Omitted as permitted by Instruction J to Form 10-K.

Item 7.     Management's Discussion and Analysis of Financial Condition and
            Results of Operations.

            Omitted as permitted by Instruction J to Form 10-K.

Item 7A     Quantitative and Qualitative Disclosures about Market Risk.

            Omitted as permitted by Instruction J to Form 10-K.

Item 8.     Financial Statements and Supplementary Data.

            Omitted as permitted by Instruction J to Form 10-K.

Item 9.     Changes in and Disagreements With Accountants on Accounting and
            Financial Disclosure.

            Omitted as permitted by Instruction J to Form 10-K.

Item 9A.    Controls and Procedures.

            Omitted as permitted by Instruction J to Form 10-K.

Item 9B.    Other Information.

            None.


                                       5
<PAGE>


                                    PART III


Item 10.    Directors, Executive Officers and Corporate Governance.

            Omitted as permitted by Instruction J to Form 10-K.

Item 11.    Executive Compensation.

            Omitted as permitted by Instruction J to Form 10-K.

Item 12.    Security Ownership of Certain Beneficial Owners and Management and
            Related Stockholder Matters.

            Omitted as permitted by Instruction J to Form 10-K.

Item 13.    Certain Relationships and Related Transactions, and Director
            Independence.

            Omitted as permitted by Instruction J to Form 10-K.

Item 14.    Principal Accountant Fees and Services.

            Omitted as permitted by Instruction J to Form 10-K.


                                       6
<PAGE>


                                    PART IV

Item 15.    Exhibits and Financial Statement Schedules.

            (a)   (1) Not applicable.

                  (2) Not applicable.

                  (3) The required exhibits are as follows:

                      o   Exhibit 3(i): Copy of Company's Certificate of
                          Incorporation (Filed as Exhibit 3.1 to Registration
                          Statement on Form S-3 (File No. 333-110343))

                      o   Exhibit 3(ii): Copy of Company's By-laws (Filed as
                          Exhibit 3.2 to Registration Statement on Form S-3
                          (File No. 333-110343))

                      o   Exhibit 4.1: Pooling and Servicing Agreement (Filed
                          as part of the Current Report on Form 8-K filed on
                          March 14, 2006 under the Commission file number of
                          the Issuing Entity)

                      o   Exhibit 4.2: Amendment No. 1 (Filed as part of the
                          Current Report on Form 8-K filed on December 22,
                          2006 under the Commission file number of the
                          Issuing Entity)

                      o   Exhibit 31(ii):  Rule 15d-14(d) Certification

                      o   Exhibit 33.1: Report on Assessment of Compliance
                          With Servicing Criteria for Asset-Backed Securities
                          for Countrywide Financial Corporation

                      o   Exhibit 33.2: Report on Assessment of Compliance
                          With Servicing Criteria for Asset-Backed Securities
                          for the Trustee

                      o   Exhibit 34.1: Attestation Report on Assessment of
                          Compliance With Servicing Criteria for Asset-Backed
                          Securities of KPMG LLP on behalf of Countrywide
                          Financial Corporation

                      o   Exhibit 34.2: Attestation Report on Assessment of
                          Compliance With Servicing Criteria for Asset-Backed
                          Securities of Ernst & Young LLP on behalf of the
                          Trustee

                      o   Exhibit 35: Servicer Compliance Statement of the
                          Master Servicer

            (b) See subparagraph (a)(3) above.

            (c) Not applicable.


                                     7
<PAGE>


                           ADDITIONAL INFORMATION

Item 1112(b) of Regulation AB.      Financial Information of Significant
                                    Obligors.

            Not Applicable.


Item 1114(b)(2) of Regulation AB.   Financial Information of Significant
                                    Enhancement Providers.

            Not Applicable.


Item 1115(b) of Regulation AB.      Financial Information of Certain Entities
                                    Providing Derivative Instruments.

            Not Applicable.


Item 1117 of Regulation AB.         Legal Proceedings.

            None.


Item 1119 of Regulation AB.         Affiliations and Certain Relationships and
                                    Related Transactions.

            The information required by Item 1119 of Regulation AB was
            previously filed with the U.S. Securities and Exchange Commission
            in the prospectus supplement filed under Rule 424(b) of the
            Securities Act of 1933, as amended, for Alternative Loan Trust
            2006-4CB.

Item 1122 of Regulation AB.         Compliance with Applicable Servicing
                                    Criteria.

            See Exhibits 33.1, 33.2, 34.1 and 34.2 to this Form 10-K.


Item 1123 of Regulation AB.         Servicer Compliance Statement.

            See Exhibit 35 to this Form 10-K.


                                     8

<PAGE>


                                 SIGNATURES

      Pursuant to the requirements of Section 13 or 15(d) of the Securities
Exchange Act of 1934, the registrant has duly caused this report to be signed
on its behalf by the undersigned, thereunto duly authorized.

                              ALTERNATIVE LOAN TRUST 2006-4CB

                              By:   Countrywide Home Loans Servicing LP,
                                    as Master Servicer

                                    By:   Countrywide GP, Inc.


                                          By:  /s/ Steve Bailey
                                               ------------------------------
                                               Name:   Steve Bailey
                                               Title:  Senior Managing Director,
                                                       Loan Administration

                                               Date:   March 27, 2007

                                     9
<PAGE>



      SUPPLEMENTAL INFORMATION TO BE FURNISHED WITH REPORTS FILED PURSUANT TO
SECTION 15(d) OF THE ACT BY REGISTRANTS WHICH HAVE NOT REGISTERED SECURITIES
PURSUANT TO SECTION 12 OF THE ACT.

      No annual report, proxy statement, form of proxy or other proxy
soliciting material with respect to the Issuing Entity or the Depositor has
been, or will be, sent to security holders.



                                     10
<PAGE>


                                EXHIBIT INDEX


Exhibit     Document
-------     --------


3(i)        Company's Certificate of Incorporation (Filed as Exhibit 3.1 to
            Registration Statement on Form S-3 (File No. 333-110343))*

3(ii)       Company's By-laws (Filed as Exhibit 3.2 to Registration Statement
            on Form S-3 (File No. 333-110343)*

4.1         Pooling and Servicing Agreement (Filed as part of the Current
            Report on Form 8-K filed on March 14, 2006 under the Commission
            file number of the Issuing Entity)*

4.2         Amendment No. 1 (Filed as part of the Current Report on Form 8-K
            filed on December 22, 2006 under the Commission file number of the
            Issuing Entity)*

31(ii)      Rule 15d-14(d) Certification

33.1        Report on Assessment of Compliance With Servicing Criteria for
            Asset-Backed Securities for Countrywide Financial Corporation

33.2        Report on Assessment of Compliance With Servicing Criteria for
            Asset-Backed Securities for the Trustee

34.1        Attestation Report on Assessment of Compliance With Servicing
            Criteria for Asset-Backed Securities of KPMG LLP on behalf of
            Countrywide Financial Corporation

34.2        Attestation Report on Assessment of Compliance With Servicing
            Criteria for Asset-Backed Securities of Ernst & Young LLP on behalf
            of the Trustee

35          Servicer Compliance Statement of the Master Servicer


______________

*     Incorporated herein by reference.


                                     11

<PAGE>

                               Exhibit 31(ii)
                               --------------


                               CERTIFICATIONS

      I, Steve Bailey, certify that:


      1.    I have reviewed this report on Form 10-K and all reports on Form
            10-D required to be filed in respect of the period covered by this
            report on Form 10-K of Alternative Loan Trust 2006-4CB (the
            "Exchange Act periodic reports");

      2.    Based on my knowledge, the Exchange Act periodic reports, taken as
            a whole, do not contain any untrue statement of a material fact or
            omit to state a material fact necessary to make the statements
            made, in light of the circumstances under which such statements
            were made, not misleading with respect to the period covered by
            this report;

      3.    Based on my knowledge, all of the distribution, servicing and other
            information required to be provided under Form 10-D for the period
            covered by this report is included in the Exchange Act periodic
            reports;

      4.    I am responsible for reviewing the activities performed by the
            servicer(s) and based on my knowledge and the compliance review(s)
            conducted in preparing the servicer compliance statement(s)
            required in this report under Item 1123 of Regulation AB, and
            except as disclosed in the Exchange Act periodic reports, the
            servicer(s) have fulfilled their obligations under the servicing
            agreement(s) in all material respects; and

      5.    All of the reports on assessment of compliance with servicing
            criteria for asset-backed securities and their related attestation
            reports on assessment of compliance with servicing criteria for
            asset-backed securities required to be included in this report in
            accordance with Item 1122 of Regulation AB and Exchange Act Rules
            13a-18 and 15d-18 have been included as an exhibit to this report,
            except as otherwise disclosed in this report. Any material
            instances of noncompliance described in such reports have been
            disclosed in this report on Form 10-K.

      In giving the certifications above, I have reasonably relied on
      information provided to me by the following unaffiliated parties: The
      Bank of New York, as Trustee.

Date: March 27, 2007


      /s/ Steve Bailey
      ----------------------------
      Steve Bailey
      Senior Managing Director, Loan Administration

<PAGE>

                                  Exhibit 33.1
                                  ------------

                                             [LOGO OMITTED] Countrywide
                                             --------------------------
                                                      HOME LOANS

                                             2900 Madera Road
                                             Simi Valley, California 93065-6298
                                             (805) 955-1000


          ASSESSMENT OF COMPLIANCE WITH APPLICABLE SERVICING CRITERIA

      Countrywide Financial Corporation and certain of its subsidiaries,
including its direct and indirect wholly-owned subsidiaries, Countrywide Home
Loans, Inc. (CHL), Countrywide Tax Services Corporation, Newport Management
Corporation, and Countrywide Home Loans Servicing, LP, a wholly-owned
subsidiary of CHL (collectively the "Company") provides this platform-level
assessment, for which Countrywide Financial Corporation and such subsidiaries
participated in servicing functions, as such term is described under Title 17,
Section 229.1122 of the Code of Federal Regulations ("Item 1122 of Regulation
AB"), of compliance in respect of the following Applicable Servicing Criteria
specified in Item 1122(d) of Regulation AB promulgated by the Securities and
Exchange Commission in regard to the following servicing platform for the
following period:

      Platform: publicly-issued (i.e., registered with the Securities and
      Exchange Commission pursuant to the Securities Act of 1933, as amended)
      residential mortgage-backed securities (securities collateralized by
      residential mortgage loans, including prime, alternative loan products,
      sub-prime, HELOC and closed seconds) issued on or after January 1, 2006
      for which the Company provides cash collection and administration,
      investor remittances and reporting (except for those activities relating
      to trustee and paying agent services), and pool asset administration
      (except for those activities relating to custodial operations of pool
      assets and related documents), collectively "Servicing Functions" and
      for which the related issuer has a fiscal year end of December 31, 2006.
      The platform excludes any transactions issued by any government
      sponsored enterprise for which the Company provides Servicing Functions.

      Period: as of and for the year ended December 31, 2006.

      Applicable Servicing Criteria: all servicing criteria set forth in Item
      1122(d), to the extent required in the related agreements, except for
      the following paragraphs: 1122(d)(1)(iii), 1122(d)(3)(i)(B), only as it
      relates to information other than that contained in the monthly
      remittance report delivered by the servicer to the master servicer,
      trustee, and/or bond administrator, 1122(d)(3)(i)(D), only as it relates
      to the agreeing with investors' records as to the total unpaid principal
      balance and number of pool assets serviced by the servicer,
      1122(d)(3)(ii), only as it relates to amounts other than amounts
      remitted by the servicer to the master servicer, trustee, and/or bond
      administrator, 1122(d)(3)(iii), 1122(d)(3)(iv), 1122(d)(4)(i) and
      1122(d)(4)(ii), only as 1122(d)(4)(i) and 1122(d)(4)(ii) relate to the
      custodial operations of the pool assets and related documents
      (collateral file) by the document custodian responsible for such
      functions for the related transaction, and 1122(d)(4)(xv), only as it
      relates to Item 1115 of Regulation AB (derivative transactions).

<PAGE>

      With respect to the Platform and the Period, the Company provides the
following assessment of compliance in respect of the Applicable Servicing
Criteria:

      1. The Company is responsible for assessing its compliance with the
Applicable Servicing Criteria.

      2. The Company has assessed compliance with the Applicable Servicing
Criteria.

      3. Other than as identified on Schedule A hereto, as of and for the
Period, the Company was in material compliance with the Applicable Servicing
Criteria.

      KPMG LLP, an independent registered public accounting firm, has issued
an attestation report with respect to the Company's foregoing assessment of
compliance.

<PAGE>

                             COUNTRYWIDE FINANCIAL CORPORATION


                             By:    /s/ Steve Bailey
                                    --------------------------------------------
                                    Steve Bailey


                             Its:   Senior Managing Director and Chief Executive
                                    Officer, Loan Administration


                             Dated: February 28, 2007


                             By:    /s/ Kevin Meyers
                                    --------------------------------------------
                                    Kevin Meyers

                             Its:   Managing Director and Chief Financial
                                    Officer, Countrywide Home Loans, Inc. Loan
                                    Administration


                             Dated: February 28, 2007

<PAGE>

                                  Schedule A
                                  ----------

                      Material Instances of Noncompliance
                      -----------------------------------

No material instances of noncompliance: the Company has complied, in all
material respects, with the applicable servicing criteria as of and for the
year ended December 31, 2006.

<PAGE>

                                  Exhibit 33.2
                                  ------------


          ASSERTION OF COMPLIANCE WITH APPLICABLE SERVICING CRITERIA



The Bank of New York and The Bank of New York Trust Company, N. A.
(collectively, the "Company") provides this platform-level assessment of
compliance with the servicing criteria specified in Item 1122(d) of Regulation
AB promulgated by the Securities and Exchange Commission.

Management has determined that the following servicing criteria are applicable
in regards to the following servicing platform for the following period:

Platform: Publicly-issued (i.e., transaction-level reporting initially
required under the Securities Exchange Act of 1934, as amended) residential
mortgage-backed securities and other mortgage-related asset-backed securities
issued on or after January 1, 2006 (and like-kind transactions issued prior to
January 1, 2006) for which the Company provides trustee, securities
administration, paying agent or custodial services. The platform includes like
kind transactions for which the Company provided trustee, securities
administrator, paying agent or custodial services as a result of the Company's
acquisition as of October 1, 2006 of portions of JPMorgan Chase Bank, N.A.'s
corporate trust business, including structured finance agency and trust
transactions.

Applicable Servicing Criteria: All servicing criteria set forth in Item
1122(d), to the extent required by the related transaction agreements as to
any transaction, except for the following criteria: 1122 (d) (1)(ii), (iii),
(iv), (4) (iv), (v), (vi), (vii), (viii), (ix), (x), (xi), (xii) and (xiii).

Period: Twelve months ended December 31, 2006.

With respect to the Platform and the Period, the Company provides the
following assessment of compliance in respect of the Applicable Servicing
Criteria:

o  The Company is responsible for assessing its compliance with the Applicable
Servicing Criteria.

o  The Company has assessed compliance with the Applicable Servicing Criteria.

o  As of December 31, 2006 and for the Period, the Company was in material
compliance with the Applicable Servicing Criteria.



                                      1
<PAGE>


Ernst & Young LLP, an independent registered public accounting firm, has
issued an attestation report with respect to the Company's foregoing
assessment of compliance.



      The Bank of New York                    The Bank of New York
      The Bank of New York Trust              The Bank of New York Trust
         Company, N.A.                           Company, N.A.


      /s/ Robert L. Griffin                   /s/ Patrick J. Tadie
      ---------------------------             ---------------------------
      Robert L. Griffin                       Patrick J. Tadie
      Authorized Signer                       Authorized Signer


March 1, 2007



                                      2

<PAGE>

                                  Exhibit 34.1
                                  ------------


[LOGO OMITTED]
KPMG
         KPMG LLP
         Suite 2000
         355 South Grand Avenue
         Los Angeles, CA 90071-1568

            Report of Independent Registered Public Accounting Firm

The Board of Directors
Countrywide Financial Corporation:

We have examined management's assessment, included in the accompanying
Assessment of Compliance with Applicable Servicing Criteria, that Countrywide
Financial Corporation and certain of its subsidiaries, including its direct
and indirect wholly owned subsidiaries, Countrywide Home Loans (CHL),
Countrywide Tax Services Corporation, Newport Management Corporation, and
Countrywide Home Loans Servicing L.P., a wholly owned subsidiary of CHL
(collectively the Company) complied with the servicing criteria set forth in
Item 1122(d) of the Securities and Exchange Commission's Regulation AB for
publicly issued residential mortgage-backed securities (securities
collateralized by residential mortgage loans, including prime, alternative
loan products, subprime, HELOC, and closed seconds) issued on or after January
1, 2006, for which the Company provides cash collection and administration,
investor remittances, and reporting (except for those activities relating to
trustee and paying agent services), and pool asset administration (except for
those activities relating to custodial operations of pool assets and related
documents), collectively "Servicing Functions", excluding any transactions
issued by any government sponsored enterprise for which the Company provides
Servicing Functions (the Platform), except for servicing criteria
1122(d)(1)(iii), 1122(d)(3)(i)(B), only as it relates to information other
than that contained in the monthly remittance report delivered by the servicer
to the master servicer, trustee, and/or bond administrator, and
1122(d)(3)(i)(D), only as it relates to the agreeing with investors' records
as to the total unpaid principal balance and number of pool assets serviced by
the servicer, 1122(d)(3)(ii), only as it relates to amounts other than amounts
remitted by the servicer to the master services, trustee, and/or bond
administrator, 1122(d)(3)(iii), 1122(d)(3)(iv), 1122(d)(4)(i), and
1122(d)(4)(ii), only as 1122(d)(4)(i) and 1122(d)(4)(ii) relate to the
custodial operations of the pool assets and related documents (collateral
file) by the document custodian responsible for such functions for the related
transaction and 1122(d)(4)(xv), only as it relates to Item 1115 of Regulation
AB (derivative transactions), as of and for the year ended December 31, 2006.
Management is responsible for the Company's compliance with those servicing
criteria. Our responsibility is to express an opinion on management's
assessment about the Company's compliance based on our examination.

Our examination was conducted in accordance with the standards of the Public
Company Accounting Oversight Board (United States) and, accordingly, included
examining, on a test basis, evidence about the Company's compliance with the
servicing criteria specified above and performing such other procedures as we
considered necessary in the circumstances. Our examination included testing of
less than all of the individual asset-backed transactions and securities that
comprise the Platform, testing of less than all of the servicing activities
related to the Platform, and determining whether the Company processed those
selected transactions and performed those selected activities in compliance
with the servicing criteria. Furthermore,



          KPMG LLP, a U.S. limited liability partnership, is the U.S.
            member firm of KPMG International, a Swiss corporative.


<PAGE>


our procedures were limited to the selected transactions and servicing
activities performed by the Company during the period covered by this report.
Our procedures were not designed to determine whether errors may have occurred
either prior to or subsequent to our tests that may have affected the balances
or amounts calculated or reported by the Company during the period covered by
this report for the selected transactions or any other transactions. We
believe that our examination provides a reasonable basis for our opinion. Our
examination does not provide a legal determination on the Company's compliance
with the servicing criteria.

In our opinion, management's assessment that the Company complied with the
aforementioned servicing criteria as of and for the year ended December 31,
2006 is fairly stated in all material respects.





                                                             /s/ KPMG LLP

Los Angeles, California
February 28, 2007



                                       2

<PAGE>

                                  Exhibit 34.2
                                  ------------


[LOGO OMITTED]
ERNST & YOUNG         o Ernst & Young LLP               o Phone (212) 773-3000
                        5 Times Square                    www.ey.com
                        New York, New York 10036-6530


            Report of Independent Registered Public Accounting Firm

Board of Directors
The Bank of New York

We have examined management's assertion, included in the accompanying
Management's Report on Assertion of Compliance with Applicable Servicing
Criteria that The Bank of New York and The Bank of New York Trust Company,
N.A., (collectively, the "Company"), complied with the servicing criteria set
forth in Item 1122 (d) of the Securities and Exchange Commission's Regulation
AB for the publicly issued (i.e. transaction-level reporting initially
required under the Securities and Exchange Act of 1934, as amended)
residential mortgage-backed securities and other mortgage-related asset-backed
securities issued on or after January 1, 2006 (and like-kind transactions
issued prior to January 1, 2006) for which the Company provides trustee,
securities administration, paying agent, or custodial services (the
"Platform") as of and for the year ended December 31, 2006 except for criteria
1122 (d)(1)(ii)-(iv), and 1122 (d)(4)(iv)-(xiii), which the Company has
determined are not applicable to the activities performed by them with respect
to the servicing Platform covered by this report. The Platform includes
like-kind transactions for which the Company provided trustee, securities
administration, paying agent or custodial services as a result of the
Company's acquisition as of October 1, 2006 of portions of JPMorgan Chase
Bank, N.A.'s corporate trust business, including structured finance agency and
trust transactions. Management is responsible for the Company's compliance
with those servicing criteria. Our responsibility is to express an opinion on
management's assertion about the Company's compliance with the servicing
criteria based on our examination.

Our examination was conducted in accordance with attestation standards
established by the American Institute of Certified Public Accountants, as
adopted by the Public Company Accounting Oversight Board (United States) and,
accordingly, included examining, on a test basis, evidence about the Company's
compliance with the applicable servicing criteria and performing such other
procedures as we considered necessary in the circumstances. Our examination
included testing of less than all of the individual transactions and
securities that comprise the platform, testing of less than all of the
servicing activities related to the Platform, and determining whether the
Company processed those selected transactions and performed those selected
activities in compliance with the servicing criteria and as permitted by the
Interpretation 17.06 of the SEC Division of Corporation Finance Manual of
Publicly Available Telephone Interpretations ("Interpretation 17.06").
Furthermore, our procedures were limited to the selected transactions and
servicing activities performed by the Company during the period covered by
this report. Our procedures were not designed to determine whether errors may
have occurred either prior to or subsequent to our tests that may have
affected the balances or amounts calculated or reported by the Company during
the period covered by this report for the selected transactions or any other
transactions. We believe that our examination provides a reasonable basis for
our opinion. Our examination does not provide a legal determination on the
Company's compliance with the servicing criteria.



                  A Member Practice of Ernst & Young Global

<PAGE>

In our opinion, management's assertion that the Company complied with the
aforementioned servicing criteria, including servicing criteria for which
compliance is determined based on Interpretation 17.06 as described above, as
applicable, as of and for the year ended December 31, 2006 for the Platform,
is fairly stated, in all material respects.




                                                       /s/ Ernst & Young LLP


March 1, 2007

<PAGE>

                                   Exhibit 35
                                   ----------


                      COUNTRYWIDE HOME LOANS SERVICING LP


                             OFFICERS' CERTIFICATE
                    ANNUAL STATEMENT OF THE MASTER SERVICER


                                  CWALT, INC.
                        ALTERNATIVE LOAN TRUST 2006-4CB
              MORTGAGE PASS-THROUGH CERTIFICATES, SERIES 2006-4CB


      The undersigned does hereby certify that the undersigned is an officer of
Countrywide GP, Inc., general partner of Countrywide Home Loans Servicing LP
(the "Master Servicer"), and does hereby further certify pursuant to Section
3.16 of the Pooling and Servicing Agreement for the above-captioned Series (the
"Agreement") that:

(i) A review of the activities of the Master Servicer during the preceding
calendar year and of the performance of the Master Servicer under the Agreement
has been made under my supervision; and

(ii) To the best of my knowledge, based on such review, the Master Servicer has
fulfilled all of its obligations under the Agreement in all material respects
throughout such calendar year.




/s/ Craig Baingo                                      Dated: March 14, 2007
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Craig Baingo
Executive Vice President, Finance