Entity Common Code        Entity Name
Entity Prop


Customer Analyst Assignments
Customer Analyst Assignments

Entity Common Code Entity Prop Entity Name Effective Date
Click here for detail   540802826 802,826 38 OIL & GAS, L.L.C. 8/1/2003
Click here for detail   827521337 801,137 3TEC ENERGY CORPORATION 10/1/2001
Click here for detail   155272347 3,841 A W TIPKA OIL & GAS INC. 5/1/1993
Click here for detail   087834086 802,897 ABACO OPERATING, LLC 5/1/2004
Click here for detail   793077439 801,153 ABARTA OIL & GAS CO., INC. 12/1/2001
Click here for detail   088482898 340 ABRAXAS PETROLEUM CORPORATION 1/1/1999
Click here for detail   194884441 800,944 ACACIA NATURAL GAS CORPORATION 7/1/1999
Click here for detail   109006858 100,100 ACADIAN GAS PIPELINE SYSTEM 5/1/1993
Click here for detail   189049187 802,999 ACCENT ENERGY MIDWEST GAS L.L.C. 8/1/2005
Click here for detail   059091384 801,002 ACN POWER, INC. 2/1/2000
Click here for detail   540802961 802,961 ACOCK ANAQUA OPERATING CO, LP 2/1/2005
Click here for detail   T00000500 500 ACOMA OIL CORPORATION 2/1/1999
Click here for detail   093524127 800,967 ADAMS RESOURCES MARKETING, LTD. 10/1/1999
Click here for detail   127161370 100,150 ADAMSVILLE CITY OF 5/1/1993
Click here for detail   T00000678 678 ADOBE ENERGY INC. 2/1/1999
Click here for detail   T00000680 680 ADOBE GAS MARKETING CO 2/1/1999
Click here for detail   118233191 802,825 ADVANTAGE ENERGY, INC. 8/1/2003
Click here for detail   614535904 733 AEDC (USA) INC 5/1/1993
Click here for detail   008227738 800,749 AEP ENERGY SERVICES, INC. 9/1/1997
Click here for detail   095634957 802,899 AEP GAS MARKETING LP 6/1/2004
Click here for detail   540803955 803,955 AFFILIATED HOLDINGS INC. 10/1/2007
Click here for detail   151744414 725,070 AFG INDUSTRIES INC 5/1/1993
Click here for detail   605118157 762 AGF DIRECT GAS SALES INC. 5/1/1993
Click here for detail   038906900 802,724 AIG ENERGY INC. 2/10/2003
Click here for detail   T00010000 1,000 AIKINS & OWEN 2/1/1999
Click here for detail   T00800475 800,475 AIM PIPELINE LLC 8/30/2001
Click here for detail   606072130 800,676 AK STEEL CORPORATION 4/1/1997
Click here for detail   611613415 16,366 AKRON, CITY OF 5/2/1993
Click here for detail   835409681 1,601 ALBERTA NORTHEAST GAS LIMITED 5/1/1993
Click here for detail   069643062 130,500 ALC PARTNERS 5/1/1993
Click here for detail   614340404 1,604 ALCAN ALUMINUM CORPORATION 5/1/1993
Click here for detail   148728470 100,300 ALCOA, INC. 1/1/1999
Click here for detail   006951446 1,705 ALGONQUIN GAS TRANSMISSION COMPANY 5/1/1993
Click here for detail   T00711360 711,360 ALGOOD TOWN OF 2/1/1999
Click here for detail   808433630 803,965 ALIEF CAPITAL, LLC 11/1/2007
Click here for detail   104225979 800,975 ALL POWER CORP 11/1/1999
Click here for detail   106438018 801,061 ALLEGHENY ENERGY SUPPLY COMPANY, LLC 8/1/2000
Click here for detail   026352310 803,048 ALLEGHENY LUDLUM CORPORATION 1/1/2006
Click here for detail   363499745 803,044 ALLEGIANT ENERGY GROUP, LP 1/1/2006
Click here for detail   618587257 802,231 ALLEGRO DEVELOPMENT CORP. 2/1/2007
Click here for detail   045246071 800,416 ALLEGRO INVESTMENTS, INC. 1/1/1995
Click here for detail   004598517 801,091 ALLENERGY GAS & ELECTRIC MKTING CO., LLC 1/1/2001
Click here for detail   135266901 802,834 ALLENERGY GAS MARKETING CO. NEW YORK LLC 9/1/2003
Click here for detail   945786424 800,567 ALLENERGY MARKETING COMPANY, INC. 3/1/2002
Click here for detail   135271083 802,835 ALLENERGY NEW YORK COMPANY LLC 9/1/2003
Click here for detail   877369348 800,059 ALLIANCE GAS SERVICES INC. 12/1/1998
Click here for detail   809787513 800,924 ALLIANCE PIPELINE L.P. 12/1/2000
Click here for detail   540802932 802,932 ALLIANT ENERGY GENERATION INC. 10/1/2004
Click here for detail   146214908 803,957 ALLIED ENERGY RESOURCES CORPORATION 11/1/2007
Click here for detail   065385296 1,870 ALLIED SIGNAL INC 5/1/1993
Click here for detail   965582265 1,920 ALMA ENERGY CORP 5/1/1993
Click here for detail   789982782 802,833 ALPINE RESOURCES, INC. 9/1/2003
Click here for detail   196442768 1,962 ALTA MESA RESOURCES INC 5/1/1993
Click here for detail   949058382 800,254 ALTRA STREAMLINE, L.L.C. 3/14/1996
Click here for detail   036398394 800,557 ALTRADE TRANSACTION, L.L.C. 5/1/2000
Click here for detail   194624748 1,996 AMAGAS RESOURCES INC 5/1/1993
Click here for detail   126762087 1,997 AMALGAMATED PIPELINE CO 5/1/1993
Click here for detail   604792791 803,945 AMBIT ENERGY, L.P. 9/1/2007
Click here for detail   047880133 800,599 AMERAC ENERGY CORPORATION 9/1/1996
Click here for detail   931086149 802,940 AMEREN ENERGY FUELS AND SERVICES COMPANY 12/1/2004
Click here for detail   003522724 800,820 AMEREN ENERGY, INC. 6/1/1998
Click here for detail   966851875 800,781 AMEREN SERVICES COMPANY 12/1/1997
Click here for detail   T00800937 800,937 AMEREN, CIPS 7/1/1999
Click here for detail   797606431 800,756 AMERICAN CENTRAL ENERGY LLC 3/1/2002
Click here for detail   T00002135 2,135 AMERICAN CENTRAL GAS COMPANIES INC 2/1/1999
Click here for detail   157476813 2,137 AMERICAN CENTRAL GAS MARKETING CO 5/1/1993
Click here for detail   023861875 802,830 AMERICAN COASTAL ENERGY, INC. 8/1/2003
Click here for detail   T00002116 2,116 AMERICAN COMETRA INC 2/1/1999
Click here for detail   T00800298 800,298 AMERICAN ELECTRIC POWER SERVICE CORP. 2/1/1999
Click here for detail   106944622 800,470 AMERICAN ENERGY MANAGEMENT, INC. 6/1/1995
Click here for detail   074156233 2,119 AMERICAN FLOW MEASUREMENT 9/1/1993
Click here for detail   623626731 803,859 AMERICAN GAS SUPPLY (HEARTLAND), LTD. 7/1/2006
Click here for detail   796347446 803,926 AMERICAN GAS SUPPLY, LP 6/1/2007
Click here for detail   606581916 102,123 AMERICAN HUNTER ENERGY 5/1/1993
Click here for detail   T00800441 800,441 AMERICAN MAIZE - PRODUCTS DECATUR INC. 2/1/1999
Click here for detail   105687560 802,849 AMERICAN MUNICIPAL POWER - OHIO, INC. 10/1/2003
Click here for detail   043368596 2,155 AMERICAN PIPELINE COMPANY 9/1/2001
Click here for detail   154189989 2,167 AMERICAN STEEL & WIRE CORP 5/1/1993
Click here for detail   070572912 802,809 AMERICAN SUGAR REFINING, INC. 6/1/2003
Click here for detail   059339689 2,173 AMERICAN TRADING & PRODUCTION CORP 5/1/1993
Click here for detail   807127758 802,764 AMERICAN UTILITIES CORPORATION 12/1/2002
Click here for detail   015553639 800,713 AMERIENERGY, INC. 5/1/1997
Click here for detail   015395973 800,538 AMKOR NATURAL GAS COMPANY 1/1/1999
Click here for detail   194624391 2,210 AMTEX GAS AND MINERALS INC 5/1/1993
Click here for detail   001317171 93,110 ANADARKO E&P COMPANY LP 8/13/2002
Click here for detail   199116823 2,323 ANADARKO ENERGY SERVICES COMPANY 3/11/1997
Click here for detail   783263080 802,265 ANADARKO GATHERING COMPANY 8/1/2003
Click here for detail   026409797 2,324 ANADARKO PETROLEUM CORPORATION 5/1/1993
Click here for detail   177586641 2,251 ANAQUA OIL & GAS INC 5/1/1993
Click here for detail   807786769 801,188 ANDERSON EXPLORATION CO., INC. 5/1/2002
Click here for detail   T00100800 100,800 ANGELLE, WARNER J 2/1/1999
Click here for detail   166887351 802,920 ANGLO-SUISSE OFFSHORE PARTNERS, LLC 9/1/2004
Click here for detail   006958581 101,000 ANR PIPELINE COMPANY 5/1/1993
Click here for detail   092454453 803,948 ANR STORAGE CO. 10/1/2007
Click here for detail   T00002428 2,428 ANTHEM ENERGY CO 2/1/1999
Click here for detail   006961551 2,438 APACHE CORPORATION 2/1/1999
Click here for detail   T00002441 2,441 APACHE DRILLING 2/1/1999
Click here for detail   T00002433 2,433 APC OPERATING PARTNERSHIP 2/1/1999
Click here for detail   877932293 800,537 APEX OIL & GAS, INC. 1/1/1996
Click here for detail   007941537 803,037 APPALACHIAN POWER COMPANY 1/1/2006
Click here for detail   048318133 2,900 AQUA GLASS CORP 5/1/1993
Click here for detail   161446109 800,790 AQUILA DALLAS MARKETING, L.P. 4/17/2001
Click here for detail   174976175 800,085 AQUILA ENERGY CORPORATION 2/1/1999
Click here for detail   788072502 3,012 AQUILA ENERGY RESOURCES CORPORATION 5/1/1993
Click here for detail   840015150 800,414 AQUILA ENERGY TRANSPORTATION CORPORATION 2/1/1999
Click here for detail   085510092 802,728 AQUILA LONG TERM, INC. 10/1/2002
Click here for detail   785958422 3,010 AQUILA MERCHANT SERVICES, INC. 3/1/2002
Click here for detail   157455536 3,013 AQUILA SOUTHWEST MARKETING, L.P. 1/1/1998
Click here for detail   003048738 801,085 AQUILA STORAGE AND TRANSPORTATION, L.P. 12/1/2000
Click here for detail   006966055 801,414 AQUILA, INC. 3/1/2003
Click here for detail   146240937 802,891 ARAGON OIL COMPANY, L.L.C. 4/1/2004
Click here for detail   T00003081 3,081 ARAN ENERGY CORPORATION 2/1/1999
Click here for detail   T00800465 800,465 ARANSAS PETROLEUM CO. 2/1/1999
Click here for detail   803154574 802,771 ARAPAHO COMMUNICATIONS, INC 1/1/2003
Click here for detail   883489593 800,614 ARAXAS ENERGY CORPORATION 10/1/1996
Click here for detail   T00003085 3,085 ARBCO INC 2/1/1999
Click here for detail   808344766 800,611 ARCADIA ENERGY CORPORATION 10/1/1996
Click here for detail   001307586 800,884 ARCHER DANIELS MIDLAND COMPANY 3/1/1999
Click here for detail   806136417 803,942 ARCLIGHT ENERGY MARKETING, LLC 9/1/2007
Click here for detail   037765781 3,140 ARCO OIL & GAS COMPANY 2/1/1999
Click here for detail   119309909 801,133 ARENA ENERGY, LLC 9/1/2001
Click here for detail   131086030 802,823 ARENA OFFSHORE, LLC 7/1/2003
Click here for detail   118638142 804,006 ARK-LA-TEX ENERGY, LLC 6/1/2008
Click here for detail   T00003197 3,197 ARMOUR RESOURCE HOLDINGS LTD 2/1/1999
Click here for detail   123787249 802,855 AROC (TEXAS), INC. 11/1/2003
Click here for detail   787434687 800,350 ARROW MEASUREMENT INC. (CXY) 8/1/1994
Click here for detail   101655608 803,847 ASCENT OPERATING, LP 5/1/2006
Click here for detail   193580115 3,245 ASHER RESOURCES, LLP 4/1/1994
Click here for detail   188758874 3,290 ASHLAND EXPLORATION INC 5/1/1993
Click here for detail   T00003295 3,295 ASHLAND GAS MARKETING INC 2/1/1999
Click here for detail   616761458 3,312 ASHLAND PETROLEUM, DIV. OF ASHLAND INC. 1/1/1999
Click here for detail   042417030 3,299 ASHLAND TOWN OF MISS 5/1/1993
Click here for detail   005003264 800,833 ASHLANDCHEM.ENERGYSVCS.DIV.OFASHLANDINC. 7/1/1998
Click here for detail   556221844 3,301 ASHLAWN ENERGY INC 1/1/1999
Click here for detail   187570890 3,370 ASHTON ENERGY CO 1/1/1999
Click here for detail   867733735 802,925 ASPECT ENERGY, LLC 9/1/2004
Click here for detail   054077672 801,651 ASSOCIATED ELECTRIC COOPERATIVE, INC. 12/1/2003
Click here for detail   178564183 3,393 ASSOCIATED NATURAL GAS INC 1/1/1999
Click here for detail   101985930 801,191 ASTORIA GENERATING CO. L.P. 5/1/2002
Click here for detail   807094305 801,184 ATASCA RESOURCES, INC. 4/1/2002
Click here for detail   T00800477 800,477 ATCHAFALAYA MEASUREMENT INC. 2/1/1999
Click here for detail   T00003451 3,451 ATG ENVIRONMENTAL RESOURCES INC 2/1/1999
Click here for detail   077656221 800,026 ATHENS ALABAMA UTILITY CITY OF 5/1/1993
Click here for detail   789351640 3,478 ATHENS TENNESSEE UTILITIES BOARD 5/2/1993
Click here for detail   006924708 3,595 ATLANTA GAS LIGHT CO 5/1/1993
Click here for detail   945433118 800,604 ATLANTA GAS LIGHT SERVICES, INC. 4/7/1998
Click here for detail   783026453 3,625 ATLAS GAS MARKETING INC 5/1/1993
Click here for detail   540802759 802,759 ATLAS PIPELINE PENNSYLVANIA LLC 12/1/2002
Click here for detail   622316842 113,630 ATLAS PRODUCTION SERVICE 5/1/1993
Click here for detail   038960944 3,627 ATLAS RESOURCES INC 5/1/1993
Click here for detail   108203241 3,630 ATMOS ENERGY CORPORATION 5/1/1993
Click here for detail   T00154500 154,500 ATMOS ENERGY CORPORATION (KY) 10/1/2002
Click here for detail   613205723 149,900 ATMOS ENERGY CORPORATION (LA) 4/25/2005
Click here for detail   006964415 135,100 ATMOS ENERGY CORPORATION (MS) 4/1/2005
Click here for detail   093153468 150,600 ATMOS ENERGY CORPORATION (TN) 10/1/2002
Click here for detail   128507998 131,750 ATMOS ENERGY MARKETING (LA) 5/1/2005
Click here for detail   835705831 96,567 ATMOS ENERGY MARKETING, LLC 10/2/2003
Click here for detail   826183287 800,628 ATP OIL & GAS CORPORATION 12/1/1996
Click here for detail   131717837 3,649 AUBURN ENTERPRISES INC 5/1/1993
Click here for detail   T00101750 101,750 AUGUSTINE, MAURICE 2/1/1999
Click here for detail   930875104 801,071 AURES ENERGY, L.L.C. 3/15/2001
Click here for detail   805610482 800,242 AURORA NATURAL GAS, LLC 9/15/1995
Click here for detail   124540944 802,792 AUX SABLE LIQUID PRODUCTS LP 3/1/2003
Click here for detail   008256364 800,047 AVERY DENNISON CORPORATION 9/1/2001
Click here for detail   015180698 800,760 AVISTA ENERGY, INC. 10/1/1997
Click here for detail   121422893 3,840 AVIVA AMERICA INC 5/1/1993
Click here for detail   T00003920 3,920 B & P OIL COMPANY 2/1/1999
Click here for detail   137573796 3,929 B T OPERATING COMPANY 5/1/1993
Click here for detail   006461206 800,647 B.E.P. PARTNERS 1992 #1 1/1/1999
Click here for detail   540803986 803,986 BABY OIL, INC 2/1/2008
Click here for detail   T00008850 8,850 BACA EXPLORATION INC 2/1/1999
Click here for detail   075080978 3,943 BADGER OIL CORPORATION 12/1/1998
Click here for detail   T00003938 3,938 BAKER, HAROLD D 2/1/1999
Click here for detail   137022034 102,250 BALDWYN CITY OF 5/1/1993
Click here for detail   932446388 4,015 BALTIMORE GAS AND ELECTRIC COMPANY 5/1/1993
Click here for detail   T00800708 800,708 BANKERS TRUST COMPANY 2/1/1999
Click here for detail   210021531 802,980 BARCLAYS BANK PLC 4/1/2005
Click here for detail   T00800596 800,596 BARGO ENERGY COMPANY 2/1/1999
Click here for detail   T00801064 801,064 BARRETT BROTHERS OIL & GAS, INC. 8/1/2000
Click here for detail   789429115 800,796 BASIN EXPLORATION, INC. (DELAWARE) 1/1/1998
Click here for detail   008948440 800,835 BASS ENTERPRISES PRODUCTION CO. 7/1/1998
Click here for detail   008046245 5,500 BASS, PERRY R TRUSTEE 5/1/1993
Click here for detail   086941077 102,500 BATESVILLE CITY OF 5/1/1993
Click here for detail   069340214 102,700 BAY STATE GAS COMPANY 2/1/1999
Click here for detail   614875115 803,857 BAYOU CITY EXPLORATION, INC 7/1/2006
Click here for detail   102655560 102,550 BAYOU INTERSTATE PIPELINE SYSTEM 5/1/1993
Click here for detail   797177201 67,100 BAYOU INTRASTATE GAS COMPANY 5/15/1997
Click here for detail   110831344 800,763 BAYOU PIPELINE COMPANY 11/1/1998
Click here for detail   540803023 803,023 BBPC, LLC D/B/A ENHANCED ENERGY SERVICES 11/1/2005
Click here for detail   965863715 802,852 BBPC, LLC D/B/A GREAT EASTERN ENERGY 10/1/2003
Click here for detail   808164859 802,322 BEACON PETROLEUM MANAGEMENT, INC. 5/1/2003
Click here for detail   108329079 801,114 BEAR CREEK STORAGE COMPANY 5/1/2001
Click here for detail   608461807 803,022 BEAR ENERGY LP 4/6/2006
Click here for detail   T00102750 102,750 BECK, D W 2/1/1999
Click here for detail   T00102800 102,800 BECKENDORFF, MELTON (MR) 2/1/1999
Click here for detail   879439719 801,005 BEDFORD COUNTY UTILITY DISTRICT 6/15/2004
Click here for detail   T00007000 7,000 BEEM OIL AND GAS INC 2/1/1999
Click here for detail   052628984 801,059 BELCO ENERGY CORP. 8/1/2000
Click here for detail   T00800631 800,631 BELCO OPERATING CORPORATION 2/1/1999
Click here for detail   066054776 7,062 BELDEN & BLAKE CORPORATION 5/1/1993
Click here for detail   004468690 801,193 BELDEN BRICK COMPANY, THE 7/1/2002
Click here for detail   804896645 7,081 BENDER ENERGY INC. 5/1/1993
Click here for detail   T00007087 7,087 BENGAIL, INC. 2/1/1999
Click here for detail   120830997 800,271 BENJAMIN SCHLESINGER AND ASSOCIATES, INC 9/1/2001
Click here for detail   T00103000 103,000 BENOIT, J H (MR) 2/1/1999
Click here for detail   148565443 802,838 BENTEK ENERGY LLC 9/1/2003
Click here for detail   006955587 103,250 BERKSHIRE GAS COMPANY THE 5/1/1993
Click here for detail   048259027 800,911 BERKSHIRE POWER COMPANY, L.L.C. 4/1/1999
Click here for detail   784112588 803,869 BERYL OIL AND GAS LP 5/23/2007
Click here for detail   621834576 804,016 BERYL RESOURCES LP 8/1/2008
Click here for detail   T00007135 7,135 BETA OPERATING 2/1/1999
Click here for detail   001339092 7,155 BETHLEHEM STEEL CORPORATION 12/17/2001
Click here for detail   057027021 800,776 BETTIOL FUEL SERVICE, INC. 11/1/1997
Click here for detail   043806595 7,200 BETTIS, BOYLE & STOVALL INC 5/1/1993
Click here for detail   148565419 800,469 BEXCO OPERATING, INC. 6/1/1995
Click here for detail   621216428 803,055 BG ENERGY MERCHANTS, LLC 3/1/2006
Click here for detail   031219129 802,807 BG LNG SERVICES, LLC 6/1/2003
Click here for detail   006783021 8,170 BHP BILLITON PETROLEUM (AMERICAS) INC. 9/27/2001
Click here for detail   T00008172 8,172 BIENVILLE GAS MARKETING INC 2/1/1999
Click here for detail   004780763 8,000 BIG 6 DRILLING COMPANY 5/1/1993
Click here for detail   005778985 803,008 BIG APPLE ENERGY, LLC 10/1/2005
Click here for detail   958828923 802,881 BIG LAKE CORPORATION 3/1/2004
Click here for detail   143635113 802,876 BIG RIVER RESOURCES, LLC 3/1/2004
Click here for detail   T00354540 354,540 BIG SANDY GAS CORPORATION 2/1/1999
Click here for detail   026640946 28,080 BILL FENN INCORPORATED 6/15/2004
Click here for detail   012643763 8,160 BILL H. PEARL PRODUCTION INC 5/1/1993
Click here for detail   007938004 8,305 BIRDWELL OIL COMPANY 6/1/1997
Click here for detail   020802232 802,942 BISHOP ENERGY SERVICES, LLC 12/1/2004
Click here for detail   098881634 801,122 BISHOP PETROLEUM INC. 7/1/2001
Click here for detail   T00103270 103,270 BISHOP PIPELINE CORP 2/1/1999
Click here for detail   035638993 801,021 BISON ENERGY PARTNERS, INC. 3/1/2000
Click here for detail   012051697 804,002 BLACK ELK ENERGY OFFSHORE OPERATIONS, LL 5/1/2008
Click here for detail   808787659 800,219 BLACK HILLS ENERGY RESOURCES, INC. 12/1/1998
Click here for detail   166766985 802,918 BLACKHAWK RESOURCES LLC 9/1/2004
Click here for detail   009808379 103,500 BLACKSTONE GAS CO 1/1/1999
Click here for detail   131683799 8,899 BLACKWATER NATURAL GAS CORP 5/1/1993
Click here for detail   065053048 802,993 BLAKENERGY, LTD. 7/1/2005
Click here for detail   098423106 8,790 BLEDSOE ENERGY CORPORATION 5/1/1993
Click here for detail   T00018902 18,902 BLUEGRASS ENERGY GROUP INC. 2/1/1999
Click here for detail   614844186 803,998 BLUEROCK ENERGY, INC 4/1/2008
Click here for detail   065093965 8,901 BOCK AND BACON INC 5/1/1993
Click here for detail   T00800941 800,941 BOIS D'ARC OFFSHORE LTD 7/1/1999
Click here for detail   T00008887 8,887 BOIS D'ARC OPERATING CORPORATION 2/1/1999
Click here for detail   030418982 104,000 BOLIVAR CITY OF 5/1/1993
Click here for detail   T00800889 800,889