BTZ BlackRock Credit Allocation Income Trust

000 A000000 04/30/2010
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008 D020002 NY
008 D030002 10022
012 A000001 COMPUTERSHARE TRUST COMPANY, N.A. (COMMON)
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012 C010001 CANTON
012 C020001 MA
012 C030001 02021
012 A000002 BNY MELLON SHAREOWNER SERVICES (PREFERRED)
012 B000002 85-05006

012 C010002 JERSEY CITY
012 C020002 NJ
012 C030002 07310
013 A000001 DELOITTE & TOUCHE LLP
013 B010001 PRINCETON
013 B020001 NJ
013 B030001 08540
014 A000001 BB & T AM DISTRIBUTORS, INC.
014 B000001 8-52396
014 A000002 BLACKROCK CAPITAL MARKETS, LLC
014 B000002 8-67827
014 A000003 BLACKROCK EXECUTION SERVICES
014 B000003 8-48719
014 A000004 BLACKROCK FUND DISTRIBUTION COMPANY
014 B000004 8-67795
014 A000005 BLACKROCK INVESTMENTS, LLC
014 B000005 8-48436
014 A000006 FAIRHOLME DISTRIBUTORS, INC.
014 B000006 8-68327
014 A000007 HARRIS WILLIAMS LLC
014 B000007 8-53380
014 A000008 HIGHMARK FUNDS DISTRIBUTORS, INC.
014 B000008 8-67903
014 A000009 MGI FUNDS DISTRIBUTOR, INC.
014 B000009 8-46960
014 A000010 PFPC DISTRIBUTORS, INC.
014 B000010 8-45467
014 A000011 PNC CAPITAL MARKETS, INC.
014 B000011 8-32493
014 A000012 PNC INVESTMENTS LLC
014 B000012 8-66195
014 A000013 RED CAPITAL MARKETS, INC.
014 B000013 8-31175
015 A000001 STATE STREET BANK & TRUST COMPANY
015 B000001 C
015 C010001 BOSTON
015 C020001 MA
015 C030001 02111
015 E010001 X
015 A000002 THE BANK OF NEW YORK MELLON
015 B000002 S
015 C010002 NEW YORK
015 C020002 NY
015 C030002 10286
015 E010002 X
015 A000003 J.P. MORGAN CHASE BANK
015 B000003 S
015 C010003 NEW YORK
015 C020003 NY
015 C030003 10017
015 E010003 X

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020 B000001 13-3364318
020 C000001 12
020 A000002 MERRILL LYNCH, PIERCE, FENNER & SMITH INC.
020 B000002 13-5674085
020 C000002 10
020 A000003 UBS SECURITIES LLC
020 B000003 13-3873456
020 C000003 5
020 A000004 CITIGROUP GLOBAL MARKETS, INC.
020 B000004 11-2418191
020 C000004 5
020 A000005 CREDIT SUISSE SECURITIES (USA) L.L.C.
020 B000005 13-5659485
020 C000005 2
020 A000006 DEUTSCHE BANK SECURITIES INC.
020 B000006 13-2730828
020 C000006 2
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020 B000007 23-0731260
020 C000007 0
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020 C000009 0
020 C000010 0
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022 A000001 BLK LIQUIDITY FUNDS, TEMPFUND, INSTIT. CLASS
022 B000001 52-0983343
022 C000001 645879
022 D000001 853234
022 A000002 WELLS FARGO ADVISORS, LLC
022 B000002 54-0796506
022 C000002 11829
022 D000002 105485
022 A000003 RBS SECURITIES INC.
022 C000003 77363
022 D000003 0
022 A000004 MORGAN STANLEY & CO. INCORPORATED
022 B000004 13-3655998
022 C000004 45905
022 D000004 23815
022 A000005 J.P. MORGAN SECURITIES INC.
022 B000005 13-3299429
022 C000005 62945
022 D000005 0
022 A000006 GOLDMAN, SACHS & CO.
022 B000006 13-5108880
022 C000006 50347

022 D000006 4081
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022 C000007 38972
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022 D000008 582
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022 B000009 13-5659485
022 C000009 34945
022 D000009 0
022 A000010 RBC CAPITAL MARKETS CORPORATION
022 B000010 13-5033225
022 C000010 28566
022 D000010 0
023 C000000 1201945
023 D000000 993310
024 000000 Y
025 A000001 JPMORGAN CHASE CAPITAL XXIII
025 C000001 D
025 D000001 16072
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025 C000002 D
025 D000002 13699
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025 C000003 D
025 D000003 10016
025 A000004 MORGAN STANLEY
025 C000004 D
025 D000004 5216
025 A000005 WELLS FARGO CAPITAL XIII
025 C000005 D
025 D000005 4056
025 A000006 CREDIT SUISSE GUERNSEY LTD.
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025 D000006 991
025 A000007 CREDIT SUISSE GUERNSEY LTD.
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SIGNATURE NEAL J. ANDREWS
TITLE CFO