HTTP 200 OK
Allow: GET
Content-Type: application/json
Vary: Accept
{
"count": 17203,
"next": "https://lda.senate.gov/api/v1/registrants/?format=api&ordering=-name&page=609",
"previous": "https://lda.senate.gov/api/v1/registrants/?format=api&ordering=-name&page=607",
"results": [
{
"id": 400898623,
"url": "https://lda.senate.gov/api/v1/registrants/400898623/?format=api",
"house_registrant_id": null,
"name": "BLACK HILLS CORPORATION",
"description": "energy company",
"address_1": "PO Box 1400",
"address_2": null,
"address_3": null,
"address_4": null,
"city": "Rapid City",
"state": "SD",
"state_display": "South Dakota",
"zip": "57709",
"country": "US",
"country_display": "United States of America",
"ppb_country": "US",
"ppb_country_display": "United States of America",
"contact_name": "JAFAR KARIM",
"contact_telephone": "+1 605-721-1384",
"dt_updated": "2026-01-29T17:58:14.010014-05:00"
},
{
"id": 401104690,
"url": "https://lda.senate.gov/api/v1/registrants/401104690/?format=api",
"house_registrant_id": null,
"name": "BLACK DIAMOND STRATEGIES LLC",
"description": "Government Affairs",
"address_1": "2121 Lohmans Crossing Road",
"address_2": "Ste 504-101",
"address_3": null,
"address_4": null,
"city": "Austin",
"state": "TX",
"state_display": "Texas",
"zip": "78734",
"country": "US",
"country_display": "United States of America",
"ppb_country": "US",
"ppb_country_display": "United States of America",
"contact_name": "DAVID SATTERFIELD",
"contact_telephone": "+1 703-549-7705",
"dt_updated": "2026-01-30T14:22:09.773205-05:00"
},
{
"id": 6280,
"url": "https://lda.senate.gov/api/v1/registrants/6280/?format=api",
"house_registrant_id": 33000,
"name": "BLACK CROTTY SIMS HUBKA BURNETT BIRCH & SAMUELS",
"description": null,
"address_1": "501 N. GRANDVIEW AVENUE, 3RD FLOOR, P.O. DRAWER 265669",
"address_2": null,
"address_3": null,
"address_4": null,
"city": "DAYTONA BEACH",
"state": "FL",
"state_display": "Florida",
"zip": null,
"country": "US",
"country_display": "United States of America",
"ppb_country": "US",
"ppb_country_display": "United States of America",
"contact_name": "",
"contact_telephone": "",
"dt_updated": "2022-01-13T14:46:55.473261-05:00"
},
{
"id": 400713143,
"url": "https://lda.senate.gov/api/v1/registrants/400713143/?format=api",
"house_registrant_id": null,
"name": "BLACKBOARD INC.",
"description": "technology and other issues relating to education",
"address_1": "650 Massachusetts Avenue, NW",
"address_2": null,
"address_3": null,
"address_4": null,
"city": "Washington",
"state": "DC",
"state_display": "District of Columbia",
"zip": "20001",
"country": "US",
"country_display": "United States of America",
"ppb_country": "US",
"ppb_country_display": "United States of America",
"contact_name": "ERIN TARIO MAYO",
"contact_telephone": "+1 202-463-4860",
"dt_updated": "2022-04-06T16:07:23.942100-04:00"
},
{
"id": 306055,
"url": "https://lda.senate.gov/api/v1/registrants/306055/?format=api",
"house_registrant_id": 38140,
"name": "BLACKBERRY CORP.",
"description": "Software company",
"address_1": "7950 Legacy Drive",
"address_2": "Suite 400",
"address_3": null,
"address_4": null,
"city": "Plano",
"state": "TX",
"state_display": "Texas",
"zip": "75024",
"country": "US",
"country_display": "United States of America",
"ppb_country": "US",
"ppb_country_display": "United States of America",
"contact_name": "JOHN DE BOER",
"contact_telephone": "+1 613-698-8972",
"dt_updated": "2026-03-16T18:14:44.971826-04:00"
},
{
"id": 6291,
"url": "https://lda.senate.gov/api/v1/registrants/6291/?format=api",
"house_registrant_id": 33118,
"name": "BKSH & ASSOCIATES",
"description": "Lobbying",
"address_1": "1110 Vermont Avenue, NW",
"address_2": "Suite 1000",
"address_3": null,
"address_4": null,
"city": "Washington",
"state": "DC",
"state_display": "District of Columbia",
"zip": "20005",
"country": "US",
"country_display": "United States of America",
"ppb_country": "US",
"ppb_country_display": "United States of America",
"contact_name": "MS. THERESA WEBER",
"contact_telephone": "",
"dt_updated": "2022-04-06T16:04:35.413352-04:00"
},
{
"id": 401103138,
"url": "https://lda.senate.gov/api/v1/registrants/401103138/?format=api",
"house_registrant_id": 42536,
"name": "BJORKLUND ADVOCACY, LLC",
"description": "Consulting re policy, legislation, copyright and creators' rights; associated lobbying",
"address_1": "3143 Upland Terr NW",
"address_2": null,
"address_3": null,
"address_4": null,
"city": "Washington",
"state": "DC",
"state_display": "District of Columbia",
"zip": "20015",
"country": "US",
"country_display": "United States of America",
"ppb_country": "US",
"ppb_country_display": "United States of America",
"contact_name": "TERRIE BJORKLUND",
"contact_telephone": "+1 202-489-4280",
"dt_updated": "2022-04-06T16:06:47.854598-04:00"
},
{
"id": 310494,
"url": "https://lda.senate.gov/api/v1/registrants/310494/?format=api",
"house_registrant_id": 38639,
"name": "BITUMINOUS COAL OPERATORS' ASSOCIATION, INC.",
"description": "Non-Profit Labor Association",
"address_1": "1776 I Street, NW",
"address_2": "Suite 245",
"address_3": null,
"address_4": null,
"city": "Washington",
"state": "DC",
"state_display": "District of Columbia",
"zip": "20006-3703",
"country": "US",
"country_display": "United States of America",
"ppb_country": "US",
"ppb_country_display": "United States of America",
"contact_name": "LINDA W. PATRICK",
"contact_telephone": "+1 202-783-3195",
"dt_updated": "2022-04-06T16:08:10.794032-04:00"
},
{
"id": 55154,
"url": "https://lda.senate.gov/api/v1/registrants/55154/?format=api",
"house_registrant_id": null,
"name": "BITTLE, R. HARRY",
"description": null,
"address_1": "931 NORTH FRONT STREET, SUITE D",
"address_2": null,
"address_3": null,
"address_4": null,
"city": "HARRISBURG",
"state": "PA",
"state_display": "Pennsylvania",
"zip": "17101",
"country": "US",
"country_display": "United States of America",
"ppb_country": "US",
"ppb_country_display": "United States of America",
"contact_name": "",
"contact_telephone": "",
"dt_updated": "2022-01-13T14:53:05.836472-05:00"
},
{
"id": 296737,
"url": "https://lda.senate.gov/api/v1/registrants/296737/?format=api",
"house_registrant_id": 37534,
"name": "BITL",
"description": null,
"address_1": "807 BRAZOS #202",
"address_2": null,
"address_3": null,
"address_4": null,
"city": "AUSTIN",
"state": "TX",
"state_display": "Texas",
"zip": "78701",
"country": "US",
"country_display": "United States of America",
"ppb_country": "US",
"ppb_country_display": "United States of America",
"contact_name": "",
"contact_telephone": "",
"dt_updated": "2022-01-13T14:55:16.706776-05:00"
},
{
"id": 401109630,
"url": "https://lda.senate.gov/api/v1/registrants/401109630/?format=api",
"house_registrant_id": 77080,
"name": "BITDEER TECHNOLOGIES GROUP",
"description": null,
"address_1": "89 Nexus Way",
"address_2": null,
"address_3": null,
"address_4": null,
"city": "Camana Bay, Grand Cayman",
"state": null,
"state_display": null,
"zip": "KY1-9",
"country": "KY",
"country_display": "Cayman Islands",
"ppb_country": "SG",
"ppb_country_display": "Singapore",
"contact_name": "MICHAEL CHEW CHEN HAN",
"contact_telephone": "+65 9737 0983",
"dt_updated": "2026-01-30T09:36:55.923048-05:00"
},
{
"id": 299514,
"url": "https://lda.senate.gov/api/v1/registrants/299514/?format=api",
"house_registrant_id": 37688,
"name": "BISHOP MUSEUM",
"description": "Cultural and natural history museum (education programs, research collections)",
"address_1": "1525 Bernice Street",
"address_2": null,
"address_3": null,
"address_4": null,
"city": "Honolulu",
"state": "HI",
"state_display": "Hawaii",
"zip": "96817",
"country": "US",
"country_display": "United States of America",
"ppb_country": "US",
"ppb_country_display": "United States of America",
"contact_name": "MS. JENNIFER ML CHOCK WOOTON",
"contact_telephone": "+1 808-847-8269",
"dt_updated": "2022-04-06T16:06:23.015509-04:00"
},
{
"id": 400577735,
"url": "https://lda.senate.gov/api/v1/registrants/400577735/?format=api",
"house_registrant_id": null,
"name": "BISHOP A LOUIS VAUGHN, SR",
"description": null,
"address_1": "p o box 282",
"address_2": "",
"address_3": "",
"address_4": null,
"city": "st charles",
"state": "MO",
"state_display": "Missouri",
"zip": "63302",
"country": "US",
"country_display": "United States of America",
"ppb_country": "US",
"ppb_country_display": "United States of America",
"contact_name": "PEOPLE OF FAITH STANDING AGAINST INJUSTICES",
"contact_telephone": "+1 417-569-7994",
"dt_updated": "2022-01-13T14:58:44.879818-05:00"
},
{
"id": 401105821,
"url": "https://lda.senate.gov/api/v1/registrants/401105821/?format=api",
"house_registrant_id": null,
"name": "BISER STRATEGIES, LLC",
"description": "Lobbying",
"address_1": "16 W. Martin St",
"address_2": null,
"address_3": null,
"address_4": null,
"city": "Raleigh",
"state": "NC",
"state_display": "North Carolina",
"zip": "27601",
"country": "US",
"country_display": "United States of America",
"ppb_country": "US",
"ppb_country_display": "United States of America",
"contact_name": "ELIZABETH BISER",
"contact_telephone": "+1 919-618-1827",
"dt_updated": "2026-01-05T15:10:51.135807-05:00"
},
{
"id": 401104384,
"url": "https://lda.senate.gov/api/v1/registrants/401104384/?format=api",
"house_registrant_id": null,
"name": "BISCAYNE STRATEGIES, LLC",
"description": "Public affairs, consulting, promotions",
"address_1": "2929 S.W. 3 Avenue",
"address_2": "Suite 410",
"address_3": null,
"address_4": null,
"city": "Miami",
"state": "FL",
"state_display": "Florida",
"zip": "33129",
"country": "US",
"country_display": "United States of America",
"ppb_country": "US",
"ppb_country_display": "United States of America",
"contact_name": "DANIEL DIAZ-BALART",
"contact_telephone": "+1 305-801-9690",
"dt_updated": "2026-01-30T09:41:54.824201-05:00"
},
{
"id": 401104270,
"url": "https://lda.senate.gov/api/v1/registrants/401104270/?format=api",
"house_registrant_id": null,
"name": "BIRGIT MATTHIESEN",
"description": null,
"address_1": "166 APPLETREE POINT ROAD",
"address_2": null,
"address_3": null,
"address_4": null,
"city": "BURLINGTON",
"state": "VT",
"state_display": "Vermont",
"zip": "5408",
"country": "US",
"country_display": "United States of America",
"ppb_country": "US",
"ppb_country_display": "United States of America",
"contact_name": "BIRGIT MATTHIESEN",
"contact_telephone": "+1 802-497-1224",
"dt_updated": "2022-01-13T15:01:01.111632-05:00"
},
{
"id": 6256,
"url": "https://lda.senate.gov/api/v1/registrants/6256/?format=api",
"house_registrant_id": 31579,
"name": "BIRCH, HORTON, BITTNER & CHEROT",
"description": "law firm",
"address_1": "1100 Connecticut Avenue, NW",
"address_2": "Suite 350",
"address_3": null,
"address_4": null,
"city": "WASHINGTON",
"state": "DC",
"state_display": "District of Columbia",
"zip": "20036",
"country": "US",
"country_display": "United States of America",
"ppb_country": "US",
"ppb_country_display": "United States of America",
"contact_name": "KELLY SHULTZ",
"contact_telephone": "+1 202-659-5800",
"dt_updated": "2026-01-12T09:37:06.169047-05:00"
},
{
"id": 400382758,
"url": "https://lda.senate.gov/api/v1/registrants/400382758/?format=api",
"house_registrant_id": null,
"name": "BIRCH HILL CHAMBERS",
"description": "Motion Pictures/Television/Theatre/Literary/New Media Representation",
"address_1": "115 Forest Avenue",
"address_2": "#61",
"address_3": null,
"address_4": null,
"city": "Locust Valley",
"state": "NY",
"state_display": "New York",
"zip": "11560",
"country": "US",
"country_display": "United States of America",
"ppb_country": "US",
"ppb_country_display": "United States of America",
"contact_name": "C. JAMES ROBERT VON SCHOLZ",
"contact_telephone": "+1 212-444-2670",
"dt_updated": "2022-04-06T16:06:19.384068-04:00"
},
{
"id": 400359642,
"url": "https://lda.senate.gov/api/v1/registrants/400359642/?format=api",
"house_registrant_id": null,
"name": "BIPARTISAN POLICY CENTER ACTION",
"description": "Non-profit advocacy organization promoting Bipartisan Policy Center's (BPC) policies.",
"address_1": "1225 I Street NW",
"address_2": "Suite 900",
"address_3": null,
"address_4": null,
"city": "Washington",
"state": "DC",
"state_display": "District of Columbia",
"zip": "20005",
"country": "US",
"country_display": "United States of America",
"ppb_country": "US",
"ppb_country_display": "United States of America",
"contact_name": "LAURA HALL",
"contact_telephone": "+1 202-270-1600",
"dt_updated": "2026-01-29T15:07:14.133759-05:00"
},
{
"id": 66751,
"url": "https://lda.senate.gov/api/v1/registrants/66751/?format=api",
"house_registrant_id": 35623,
"name": "BIOTECH POLICY GROUP LLC",
"description": null,
"address_1": "2776 S ARLINGTON MILL DR, #808",
"address_2": null,
"address_3": null,
"address_4": null,
"city": "ARLINGTON",
"state": "VA",
"state_display": "Virginia",
"zip": "22206",
"country": "US",
"country_display": "United States of America",
"ppb_country": "US",
"ppb_country_display": "United States of America",
"contact_name": "",
"contact_telephone": "",
"dt_updated": "2022-01-13T14:53:31.007350-05:00"
},
{
"id": 6245,
"url": "https://lda.senate.gov/api/v1/registrants/6245/?format=api",
"house_registrant_id": 32505,
"name": "BIOTECHNOLOGY INNOVATION ORGANIZATION",
"description": "Trade Association",
"address_1": "1201 New York Avenue NW",
"address_2": "Suite 1300",
"address_3": null,
"address_4": null,
"city": "Washington",
"state": "DC",
"state_display": "District of Columbia",
"zip": "20005",
"country": "US",
"country_display": "United States of America",
"ppb_country": "US",
"ppb_country_display": "United States of America",
"contact_name": "AIKEN HACKETT",
"contact_telephone": "+1 202-962-9200",
"dt_updated": "2026-01-30T17:54:20.485293-05:00"
},
{
"id": 49613,
"url": "https://lda.senate.gov/api/v1/registrants/49613/?format=api",
"house_registrant_id": 34600,
"name": "BIOPURE CORP",
"description": null,
"address_1": "11 HURLEY ST",
"address_2": null,
"address_3": null,
"address_4": null,
"city": "CAMBRIDGE",
"state": "MA",
"state_display": "Massachusetts",
"zip": "2141",
"country": "US",
"country_display": "United States of America",
"ppb_country": "US",
"ppb_country_display": "United States of America",
"contact_name": "",
"contact_telephone": "",
"dt_updated": "2022-01-13T14:52:42.278796-05:00"
},
{
"id": 400331552,
"url": "https://lda.senate.gov/api/v1/registrants/400331552/?format=api",
"house_registrant_id": 40311,
"name": "BIOMET, INC.",
"description": "Designs, manufactures & markets products used primarily by orthopedic medical specialists.",
"address_1": "56 E. Bell Drive, P.O. Box 587",
"address_2": null,
"address_3": null,
"address_4": null,
"city": "Warsaw",
"state": "IN",
"state_display": "Indiana",
"zip": "46581-0587",
"country": "US",
"country_display": "United States of America",
"ppb_country": "US",
"ppb_country_display": "United States of America",
"contact_name": "MILLARD P. PLUMLEE",
"contact_telephone": "+1 574-372-1932",
"dt_updated": "2022-04-06T16:06:35.934042-04:00"
},
{
"id": 401108897,
"url": "https://lda.senate.gov/api/v1/registrants/401108897/?format=api",
"house_registrant_id": 56654,
"name": "BIOMERIEUX",
"description": null,
"address_1": "1201 South 4800 West",
"address_2": null,
"address_3": null,
"address_4": null,
"city": "Salt Lake City",
"state": "UT",
"state_display": "Utah",
"zip": "84184",
"country": "US",
"country_display": "United States of America",
"ppb_country": "US",
"ppb_country_display": "United States of America",
"contact_name": "MAUDE CHAMPAGNE",
"contact_telephone": "+1 202-997-7044",
"dt_updated": "2026-01-30T17:50:20.718514-05:00"
},
{
"id": 6234,
"url": "https://lda.senate.gov/api/v1/registrants/6234/?format=api",
"house_registrant_id": 33758,
"name": "BIOMASS ENERGY ADVOCATES",
"description": null,
"address_1": "1001 G STREET, N.W. SUITE 900 EAST",
"address_2": null,
"address_3": null,
"address_4": null,
"city": "WASHINGTON",
"state": "DC",
"state_display": "District of Columbia",
"zip": "20001",
"country": "US",
"country_display": "United States of America",
"ppb_country": "US",
"ppb_country_display": "United States of America",
"contact_name": "",
"contact_telephone": "",
"dt_updated": "2022-01-13T14:47:19.968994-05:00"
}
]
}