EX-21 4 tds202410-kexhibit21.htm EX-21
Exhibit 21
TELEPHONE AND DATA SYSTEMS, INC.
SUBSIDIARY COMPANIES
December 31, 2024

SUBSIDIARY COMPANIES |  | STATE OF ORGANIZATION
UScellular |  |
| UNITED STATES CELLULAR CORPORATION |  | DELAWARE
| BANGOR CELLULAR TELEPHONE, L.P. |  | DELAWARE
| CALIFORNIA RURAL SERVICE AREA #1, INC. |  | CALIFORNIA
| CEDAR RAPIDS CELLULAR TELEPHONE, L.P. |  | DELAWARE
| CELLVEST, INC. |  | DELAWARE
| CENTRAL CELLULAR TELEPHONES, LTD. |  | ILLINOIS
| CHAMPLAIN CELLULAR, INC. |  | NEW YORK
| COMMUNITY CELLULAR TELEPHONE COMPANY |  | TEXAS
| CROWN POINT CELLULAR, INC. |  | NEW YORK
| DUBUQUE CELLULAR TELEPHONE, L.P. |  | DELAWARE
| HARDY CELLULAR TELEPHONE COMPANY |  | DELAWARE
| IOWA RSA # 3, INC. |  | DELAWARE
| IOWA RSA # 9, INC. |  | DELAWARE
| IOWA RSA # 12, INC. |  | DELAWARE
| JACKSONVILLE CELLULAR PARTNERSHIP |  | NORTH CAROLINA
| JACKSONVILLE CELLULAR TELEPHONE COMPANY |  | NORTH CAROLINA
| KANSAS #15 LIMITED PARTNERSHIP |  | DELAWARE
| KENOSHA CELLULAR TELEPHONE, L.P. |  | DELAWARE
| LAB465, LLC |  | DELAWARE
| MADISON CELLULAR TELEPHONE COMPANY |  | WISCONSIN
| MAINE RSA # 1, INC. |  | MAINE
| MAINE RSA # 4, INC. |  | MAINE
| MCDANIEL CELLULAR TELEPHONE COMPANY |  | DELAWARE
| MINNESOTA INVCO OF RSA # 7, INC. |  | DELAWARE
| NEWPORT CELLULAR, INC. |  | NEW YORK
| NH #1 RURAL CELLULAR, INC. |  | NEW HAMPSHIRE
| OREGON RSA #2, INC. |  | OREGON
| PCS WISCONSIN, LLC |  | WISCONSIN
| RACINE CELLULAR TELEPHONE COMPANY |  | WISCONSIN
| TEXAS INVCO OF RSA # 6, INC. |  | DELAWARE
| TOWNSHIP CELLULAR TELEPHONE, INC. |  | DELAWARE
| UNITED STATES CELLULAR INVESTMENT CO. OF OKLAHOMA CITY, LLC. |  | OKLAHOMA
| UNITED STATES CELLULAR INVESTMENT COMPANY, LLC |  | DELAWARE
| UNITED STATES CELLULAR INVESTMENT CORPORATION OF LOS ANGELES |  | INDIANA
| UNITED STATES CELLULAR OPERATING COMPANY LLC |  | DELAWARE
| UNITED STATES CELLULAR OPERATING COMPANY OF BANGOR |  | MAINE
| UNITED STATES CELLULAR OPERATING COMPANY OF CEDAR RAPIDS |  | DELAWARE
| UNITED STATES CELLULAR OPERATING COMPANY OF CHICAGO, LLC |  | DELAWARE
| UNITED STATES CELLULAR OPERATING COMPANY OF DUBUQUE |  | IOWA
| UNITED STATES CELLULAR OPERATING COMPANY OF KNOXVILLE |  | TENNESSEE
| UNITED STATES CELLULAR OPERATING COMPANY OF MEDFORD |  | OREGON
| UNITED STATES CELLULAR OPERATING COMPANY OF YAKIMA |  | WASHINGTON

| USCC DISTRIBUTION CO., LLC |  | DELAWARE
| USCC EIP LLC |  | DELAWARE
| USCC FINANCIAL L.L.C. |  | ILLINOIS
| USCC MANAGEMENT SERVICES, LLC |  | DELAWARE
| USCC MASTER NOTE TRUST |  | DELAWARE
| USCC PURCHASE, LLC |  | DELAWARE
| USCC RECEIVABLES FUNDING LLC |  | DELAWARE
| USCC SERVICES, LLC |  | DELAWARE
| USCC WIRELESS HOLDINGS, LLC |  | DELAWARE
| USCC WIRELESS INVESTMENT, INC. |  | DELAWARE
| USCCI CORPORATION |  | DELAWARE
| USCIC OF FRESNO |  | CALIFORNIA
| USCOC NEBRASKA/KANSAS, INC. |  | DELAWARE
| USCOC NEBRASKA/KANSAS, LLC |  | DELAWARE
| USCOC OF CENTRAL ILLINOIS, LLC |  | ILLINOIS
| USCOC OF CUMBERLAND, LLC |  | DELAWARE
| USCOC OF GREATER IOWA, LLC |  | DELAWARE
| USCOC OF GREATER MISSOURI, LLC |  | DELAWARE
| USCOC OF GREATER NORTH CAROLINA, LLC |  | DELAWARE
| USCOC OF GREATER OKLAHOMA, LLC |  | OKLAHOMA
| USCOC OF JACKSONVILLE, LLC |  | DELAWARE
| USCOC OF LACROSSE, LLC |  | DELAWARE
| USCOC OF OREGON RSA # 5, INC. |  | DELAWARE
| USCOC OF PENNSYLVANIA RSA NO. 10-B2, LLC |  | DELAWARE
| USCOC OF RICHLAND, INC. |  | WASHINGTON
| USCOC OF SOUTH CAROLINA RSA # 4, INC. |  | SOUTH CAROLINA
| USCOC OF VIRGINIA RSA # 3, INC. |  | VIRGINIA
| USCOC OF WASHINGTON-4, INC. |  | DELAWARE
| VERMONT RSA NO. 2-B2, INC. |  | DELAWARE
| WASHINGTON RSA # 5, INC. |  | WASHINGTON
| WESTELCOM CELLULAR, INC. |  | NEW YORK
| WESTERN SUB-RSA LIMITED PARTNERSHIP |  | DELAWARE
| YAKIMA MSA LIMITED PARTNERSHIP |  | DELAWARE
TDS TELECOMMUNICATIONS |  |
| TDS TELECOMMUNICATIONS LLC |  | DELAWARE
INCUMBENT LOCAL EXCHANGE COMPANIES |  |
| ARCADIA TELEPHONE COMPANY |  | OHIO
| ARIZONA TELEPHONE COMPANY |  | ARIZONA
| ARVIG TELEPHONE COMPANY |  | MINNESOTA
| ASOTIN TELEPHONE COMPANY |  | WASHINGTON
| BADGER TELECOM, LLC |  | DELAWARE
| BLACK EARTH TELEPHONE COMPANY, LLC |  | DELAWARE
| BLUE RIDGE TELEPHONE COMPANY |  | GEORGIA
| BONDUEL TELEPHONE COMPANY, LLC |  | DELAWARE
| BRIDGE WATER TELEPHONE COMPANY |  | MINNESOTA
| BURLINGTON, BRIGHTON & WHEATLAND TELEPHONE COMPANY, LLC |  | DELAWARE
| BUTLER TELEPHONE COMPANY, INC. |  | ALABAMA
| CALHOUN CITY TELEPHONE COMPANY, INC. |  | MISSISSIPPI
| CAMDEN TELEPHONE AND TELEGRAPH COMPANY, INC. |  | GEORGIA

| CAMDEN TELEPHONE COMPANY, INC. |  | INDIANA
| CENTRAL STATE TELEPHONE COMPANY, LLC |  | DELAWARE
| CHATHAM TELEPHONE COMPANY |  | MICHIGAN
| COBBOSSEECONTEE TELEPHONE COMPANY |  | MAINE
| COMMUNICATION CORPORATION OF MICHIGAN |  | MICHIGAN
| COMMUNICATIONS CORPORATION OF INDIANA |  | INDIANA
| COMMUNICATIONS CORPORATION OF SOUTHERN INDIANA |  | INDIANA
| CONTINENTAL TELEPHONE COMPANY |  | OHIO
| DELTA COUNTY TELE-COMM, INC. |  | COLORADO
| DEPOSIT TELEPHONE COMPANY, INC. |  | NEW YORK
| DICKEYVILLE TELEPHONE, LLC |  | DELAWARE
| EASTCOAST TELECOM OF WISCONSIN, LLC |  | DELAWARE
| EDWARDS TELEPHONE COMPANY, INC. |  | NEW YORK
| GRANTLAND TELECOM, LLC |  | DELAWARE
| HAMPDEN TELEPHONE COMPANY |  | MAINE
| HAPPY VALLEY TELEPHONE COMPANY |  | CALIFORNIA
| HARTLAND & ST. ALBANS TELEPHONE COMPANY |  | MAINE
| HOLLIS TELEPHONE COMPANY, INC. |  | NEW HAMPSHIRE
| HOME TELEPHONE COMPANY, INC. |  | INDIANA
| HORNITOS TELEPHONE CO. |  | CALIFORNIA
| HUMPHREYS COUNTY TELEPHONE COMPANY |  | TENNESSEE
| ISLAND TELEPHONE COMPANY |  | MICHIGAN
| KEARSARGE TELEPHONE COMPANY |  | NEW HAMPSHIRE
| LESLIE COUNTY TELEPHONE COMPANY |  | KENTUCKY
| LEWIS RIVER TELEPHONE COMPANY, INC. |  | WASHINGTON
| LEWISPORT TELEPHONE COMPANY |  | KENTUCKY
| LITTLE MIAMI COMMUNICATIONS CORPORATION |  | OHIO
| LUDLOW TELEPHONE COMPANY |  | VERMONT
| MAHANOY & MAHANTANGO TELEPHONE COMPANY |  | PENNSYLVANIA
| MCCLELLANVILLE TELEPHONE COMPANY, INC. |  | SOUTH CAROLINA
| MCDANIEL TELEPHONE CO. |  | WASHINGTON
| MERRIMACK COUNTY TELEPHONE COMPANY |  | NEW HAMPSHIRE
| MID-AMERICA TELEPHONE, LLC |  | OKLAHOMA
| MID-PLAINS TELEPHONE, LLC |  | DELAWARE
| MID-STATE TELEPHONE COMPANY |  | MINNESOTA
| MIDWAY TELEPHONE COMPANY, LLC |  | DELAWARE
| MOSINEE TELEPHONE COMPANY, LLC |  | DELAWARE
| MT. VERNON TELEPHONE COMPANY, LLC |  | DELAWARE
| MYRTLE TELEPHONE COMPANY, INC. |  | MISSISSIPPI
| NELSON-BALL GROUND TELEPHONE COMPANY |  | GEORGIA
| NORTHFIELD TELEPHONE COMPANY |  | VERMONT
| NORWAY TELEPHONE COMPANY, INC. |  | SOUTH CAROLINA
| OAKMAN TELEPHONE COMPANY, INC. |  | ALABAMA
| OAKWOOD TELEPHONE COMPANY |  | OHIO
| OKLAHOMA COMMUNICATION SYSTEMS, LLC |  | OKLAHOMA
| PEOPLES TELEPHONE COMPANY, INC. |  | ALABAMA
| PERKINSVILLE TELEPHONE COMPANY, INC. |  | VERMONT
| PORT BYRON TELEPHONE COMPANY |  | NEW YORK
| POTLATCH TELEPHONE COMPANY |  | IDAHO
| QUINCY TELEPHONE COMPANY |  | FLORIDA
| RIVERSIDE TELECOM, LLC |  | DELAWARE

| S & W TELEPHONE COMPANY, INC. |  | INDIANA
| SALEM TELEPHONE COMPANY |  | KENTUCKY
| SCANDINAVIA TELEPHONE COMPANY, LLC |  | DELAWARE
| SHIAWASSEE TELEPHONE COMPANY |  | MICHIGAN
| SOMERSET TELEPHONE COMPANY |  | MAINE
| SOUTHEAST MISSISSIPPI TELEPHONE COMPANY, INC. |  | MISSISSIPPI
| SOUTHEAST TELEPHONE CO. OF WISCONSIN, LLC |  | DELAWARE
| SOUTHWESTERN TELEPHONE COMPANY |  | ARIZONA
| ST. STEPHEN TELEPHONE COMPANY |  | SOUTH CAROLINA
| STOCKBRIDGE & SHERWOOD TELEPHONE COMPANY, LLC. |  | DELAWARE
| STRASBURG TELEPHONE COMPANY |  | COLORADO
| SUGAR VALLEY TELEPHONE COMPANY |  | PENNSYLVANIA
| TELLICO TELEPHONE COMPANY, INC. |  | TENNESSEE
| TENNEY TELEPHONE COMPANY, LLC |  | DELAWARE
| THE FARMERS TELEPHONE COMPANY, LLC |  | DELAWARE
| THE HOME TELEPHONE COMPANY OF PITTSBORO, INC. |  | INDIANA
| THE ISLAND TELEPHONE COMPANY |  | MAINE
| THE MERCHANTS AND FARMERS TELEPHONE COMPANY |  | INDIANA
| THE STATE LONG DISTANCE TELEPHONE COMPANY, LLC |  | DELAWARE
| THE VANLUE TELEPHONE COMPANY |  | OHIO
| THE WEST PENOBSCOT TELEPHONE & TELEGRAPH COMPANY |  | MAINE
| TIPTON TELEPHONE COMPANY, INC. |  | INDIANA
| TOWNSHIP TELEPHONE COMPANY, INC. |  | NEW YORK
| TRI-COUNTY TELEPHONE COMPANY, INC. |  | INDIANA
| UNION TELEPHONE COMPANY |  | NEW HAMPSHIRE
| UTELCO, LLC |  | DELAWARE
| VERNON TELEPHONE COMPANY, INC. |  | NEW YORK
| VIRGINIA TELEPHONE COMPANY |  | VIRGINIA
| WARREN TELEPHONE COMPANY |  | MAINE
| WAUNAKEE TELEPHONE COMPANY, LLC |  | DELAWARE
| WEST POINT TELEPHONE COMPANY, INCORPORATED |  | INDIANA
| WILLISTON TELEPHONE COMPANY |  | SOUTH CAROLINA
| WILTON TELEPHONE COMPANY, INC. |  | NEW HAMPSHIRE
| WINSTED TELEPHONE COMPANY |  | MINNESOTA
| WINTERHAVEN TELEPHONE COMPANY |  | CALIFORNIA
| WOLVERINE TELEPHONE COMPANY |  | MICHIGAN
OTHER COMPANIES |  |
| INTERLINX COMMUNICATION, LLC |  | DELAWARE
| TDS BROADBAND LLC |  | DELAWARE
| TDS BROADBAND SERVICE LLC |  | DELAWARE
| TDS LONG DISTANCE CORPORATION |  | DELAWARE
| TDS METROCOM, LLC |  | DELAWARE
| TDS PURCO LLC |  | DELAWARE
| TDS TELECOM SERVICE LLC |  | IOWA
| TONAQUINT NETWORKS, LLC |  | DELAWARE
| TRI-COUNTY COMMUNICATIONS CORPORATION |  | INDIANA
| ZOLO BROADCASTING LLC |  | DELAWARE
TDS GROUP |  |
| AFFILIATE FUND |  | DELAWARE

| AIRADIGM COMMUNICATIONS, INC. |  | WISCONSIN
| NATIONAL TELEPHONE & TELEGRAPH COMPANY |  | DELAWARE
| SUTTLE-STRAUS, INC. |  | WISCONSIN