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ISP & Telecom Directory · United States

US Telecom & VoIP Providers Starting With Q

Legal contact details for the 52 active FCC Form 499 filers whose legal name begins with the letter Q: the agent designated to receive subpoenas and court orders, headquarters address, customer-inquiries line, trade names and states served. FCC data as of August 2026; verify against the FCC’s live record before serving.

Showing 1–52 of 52 entries

Q5 Networks LLC

Interconnected Voip
Agent for service of process
Registered Agents Inc., 1717 N. Street NW, Washington, DC, 20036
Agent phone / fax
(202) 457-4299
Headquarters
616 Main St, Reisterstown, MD, 21136
Customer inquiries
(855) 517-5005
Holding company
—
States served (1)
Maryland
FCC 499 Filer ID
832342
Last filing
4/1/2026

QBit Networking

Interconnected Voip
Agent for service of process
Registered Agents Inc, Registered Agents Inc., 1717 N Street NW, STE 1, Washington, DC, 20036
Agent phone / fax
(307) 200-2803
Headquarters
406 N Monroe St, Watertown, WI, 53098
Customer inquiries
(920) 941-3001
Holding company
—
States served (1)
Wisconsin
FCC 499 Filer ID
838800
Last filing
4/1/2026

QCOL, Inc

Interconnected Voip
Agent for service of process
Douglas Friend, CT Corporation System, 1015 15th Street, NW, Suite 1000, Washington, DC, 20005
Agent phone / fax
(202) 572-3100 · fax (202) 572-9633
Headquarters
213 Main Street, PO Box 7, Markleysburg, PA, 15459-0007
Customer inquiries
(877) 329-1121
Holding company
—
States served (3)
Maryland, Pennsylvania, West Virginia
FCC 499 Filer ID
828364
Last filing
4/1/2026

QCSTelecom, Inc.

CAP/CLEC
Agent for service of process
Jasper Smith, 1909 33rd St SE, Washington, DC, 20020
Agent phone / fax
(202) 507-8519
Headquarters
1 Stair Way, Monroe, NY, 10950
Customer inquiries
(732) 595-7278
Holding company
—
States served (1)
New York
FCC 499 Filer ID
831027
Last filing
4/1/2026

qcVoice Inc

Interconnected Voip

Also known as: Quantech

Agent for service of process
Davis Wright Tremaine LLP, 1919 Pennsylvania Avenue Northwest, No 200, Washington, DC, 20006
Agent phone / fax
(202) 973-4400 · fax (202) 973-4499
Headquarters
369 Lexington Ave, Suite 326, New York, NY, 10017
Customer inquiries
(888) 359-0606
Holding company
—
States served (3)
Florida, New Jersey, New York
FCC 499 Filer ID
830360
Last filing
4/1/2026

QDP, LLC

Interconnected Voip

Also known as: Quality Telecom

Agent for service of process
James Vanderheiden, Northwest Registered Agent Service, Inc, 1717 N Street NW, STE 1, Washington, DC, 20036
Agent phone / fax
(509) 768-2249
Headquarters
420 S Muskogee Ave, Tahlequah, OK, 74464
Customer inquiries
(918) 207-0500
Holding company
—
States served (1)
Oklahoma
FCC 499 Filer ID
836144
Last filing
4/1/2026

Qemert Pro Technology

Interconnected Voip
Agent for service of process
Elizabeth, Northwest Registered Agent Services Inc, 1717 North Street NW, Suite 1, Washington, DC, 20036
Agent phone / fax
(509) 768-2249
Headquarters
Calle Bohechio #18, Suite 3A, Santo Domingo, 10144
Customer inquiries
(829) 466-0410
Holding company
—
States served (0)
Not listed
FCC 499 Filer ID
834813
Last filing
4/1/2025

QFlix LLC

Interconnected Voip
Agent for service of process
Northwest Registered Agent Service, 1717 N Street NW, STE 1, Washington, DC, 20036
Agent phone / fax
(509) 768-2249
Headquarters
405 E Wetmore Rd, ste 117-523, Tucson, AZ, 85705
Customer inquiries
(888) 885-5332
Holding company
—
States served (2)
Arkansas, Texas
FCC 499 Filer ID
837149
Last filing
4/1/2025

Qikfox Cybersecurity Systems, Inc.

Cellular/PCS/SMR
Agent for service of process
Corporation Service Company, 1156 15th Street NW, Suite 605, Washington, DC, 20005
Agent phone / fax
(202) 371-8090 · fax (202) 371-1945
Headquarters
55 East 3rd Avenue, San Mateo, CA, 94401
Customer inquiries
(650) 308-6363
Holding company
—
States served (49)
Alabama, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming
FCC 499 Filer ID
838301
Last filing
4/1/2025

Qos Communications llc

Interconnected Voip
Agent for service of process
Registered Agents Inc, Registered Agents Inc., 1150 Connecticut Avenue, Washington, DC, 20036
Agent phone / fax
(202) 403-0599 · fax (323) 544-4790
Headquarters
530 N. Black Horse Pike, Blackwood, NJ, 08012
Customer inquiries
(856) 302-0790
Holding company
—
States served (2)
New Jersey, Pennsylvania
FCC 499 Filer ID
832055
Last filing
4/1/2026

QTel, LLC

Local Reseller
Agent for service of process
Andrew Klein, Klein Group, PLLC, 901 15th Street, NW, Suite 700, Washington, DC, 20005
Agent phone / fax
(202) 689-7985 · fax (202) 689-7986
Headquarters
9 Second Road, Great Neck, NY, 11021
Customer inquiries
(800) 991-7835
Holding company
—
States served (1)
New York
FCC 499 Filer ID
824346
Last filing
4/1/2026

Quad State Internet LLC

Interconnected Voip
Agent for service of process
Registered Agents, Inc., 1717 N Street NW, Suite 1, Washington, DC, 20036
Agent phone / fax
(307) 200-2803
Headquarters
1212 Helen St, Paducah, KY, 42001
Customer inquiries
(270) 953-0131
Holding company
—
States served (2)
Illinois, Kentucky
FCC 499 Filer ID
836957
Last filing
4/1/2026

Qualifacts Systems LLC

Audio Bridge Service
Agent for service of process
Not listed
Agent phone / fax
Not listed
Agent email
Not listed
Headquarters
315 Deaderick St, Suite 2300, Nashville, TN, 37072
Customer inquiries
(866) 388-6755
Holding company
—
States served (1)
Florida
FCC 499 Filer ID
838158
Last filing
4/1/2025

Qualitech Business Solutions

Interconnected Voip

Also known as: Qualitech

Agent for service of process
Washington DC Registered Agent LLC, 1150 Connecticut Ave, Suite NW 900, Washington, DC, 20036
Agent phone / fax
(202) 403-0599
Headquarters
43000 W. Nine Mile Road, Suite 301, Novi, MI, 48375
Customer inquiries
(248) 646-0093
Holding company
—
States served (2)
Michigan, Ohio
FCC 499 Filer ID
832450
Last filing
4/1/2026

Quality Communication Services, LLC

Interconnected Voip
Agent for service of process
Jerry Pliska, Northwest Registered Agent Service Inc., 1717 N Street NW, Washington, DC, 20036
Agent phone / fax
(330) 350-0606
Headquarters
585 S Tiffin St, Port Clinton, OH, 43452
Customer inquiries
(330) 350-0606
Holding company
—
States served (1)
Ohio
FCC 499 Filer ID
835987
Last filing
4/1/2026

Quality Communications 2, LLC

Interconnected Voip
Agent for service of process
Corporation Service Company, 1156 15th St NW, Suite 605, Washington, DC, 20005
Agent phone / fax
(202) 371-8090 · fax (202) 371-1945
Headquarters
4-21F Banta Place, Fair Lawn, NJ, 07410
Customer inquiries
(201) 703-9001
Holding company
—
States served (3)
Florida, New Jersey, New York
FCC 499 Filer ID
830565
Last filing
4/1/2026

Quality Tech Computer, Inc.

Interconnected Voip
Agent for service of process
Harbor Compliance, 1717 N Street NW, Suite 1, Washington, DC, 20036
Agent phone / fax
(888) 995-5895
Headquarters
804 Illinois Ave, Ste 100, Pratt, KS, 67124
Customer inquiries
(620) 672-3394
Holding company
—
States served (2)
Kansas, Texas
FCC 499 Filer ID
832782
Last filing
4/1/2026

Quality Voice & Data Inc.

Interconnected Voip

Also known as: BrandGuard Connect

Agent for service of process
Orvin Moore, CliftonLarsonAllen LLP, 1025 Connecticut Avenue, N.W., Suite 712, Washington, DC, 20036
Agent phone / fax
(678) 203-0271 · fax (404) 262-3271
Headquarters
102 Grant Street, Suite B, Aurora, NE, 68818
Customer inquiries
(888) 656-5111
Holding company
—
States served (32)
Alabama, Arizona, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, Idaho, Illinois, Indiana, Iowa, Maryland, Massachusetts, Michigan, Minnesota, Missouri, Nebraska, Nevada, New Jersey, New York, North Carolina, North Dakota, Ohio, Pennsylvania, Tennessee, Texas, Utah, Virginia, Washington, Wyoming
FCC 499 Filer ID
830267
Last filing
4/1/2026

QualityIP LLC

Interconnected Voip
Agent for service of process
Corporation Service Company, 1156 15th St NW, Suite 605, Washington, DC, 20005
Agent phone / fax
(202) 371-8090 · fax (202) 371-1945
Headquarters
145 River St, Kent, OH, 44240
Customer inquiries
(330) 931-4141
Holding company
—
States served (12)
California, Colorado, District of Columbia, Florida, Illinois, Ohio, Pennsylvania, Tennessee, Texas, Virginia, Washington, Wisconsin
FCC 499 Filer ID
833759
Last filing
4/1/2026

QualityLife Intergovernmental Agency

CAP/CLEC

Also known as: Qlife

Agent for service of process
Neil Ende, Technology Law Group, 5335 Wisconsin Ave NW, Ste 440, Washington, DC, 20015
Agent phone / fax
(202) 895-1707 · fax (202) 478-5074
Headquarters
401 East 3rd St., STE 200, The Dalles, OR, 97058
Customer inquiries
(541) 506-2550
Holding company
QUALITYLIFE INTERGOVERNMENTAL AGENCY
States served (1)
Oregon
FCC 499 Filer ID
827100
Last filing
4/1/2026

QualStar Communications, Inc.

CAP/CLEC

Also known as: MetaCOM

Agent for service of process
CT Corporation, 1015 15th St NW, Washington, DC, 20005
Agent phone / fax
(877) 467-3525
Headquarters
417 Wayne Ave, Defiance, OH, 43512
Customer inquiries
(419) 782-3472
Holding company
DEFIANCE HOLDINGS LLC
States served (1)
Ohio
FCC 499 Filer ID
821816
Last filing
4/1/2026

Quantum Com LLC

Incumbent LEC
Agent for service of process
Northwest Registered Agent Service Inc., 1717 N Street NW STE 1, Washington, DC 20036, Washington, DC, 20036
Agent phone / fax
(509) 768-2249
Headquarters
1940 41st Terrace Southwest, Naples, FL, 34116
Customer inquiries
(786) 395-3628
Holding company
—
States served (59)
Alabama, Alaska, American Samoa, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, Guam, Hawaii, Idaho, Illinois, Indiana, Iowa, Johnston Atoll, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Midway Atoll, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Northern Mariana Islands, Ohio, Oklahoma, Oregon, Pennsylvania, Puerto Rico, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, US Virgin Islands, Vermont, Virginia, Wake Island, Washington, West Virginia, Wisconsin, Wyoming
FCC 499 Filer ID
838058
Last filing
4/1/2025

Quantum FSD Inc

Interconnected Voip

Also known as: Quantum FSD

Agent for service of process
Quantum FSD, 5533 W San Madele, Washington, DC, 93722
Agent phone / fax
(559) 425-3000
Headquarters
5533 W San Madele Ave, Suite 108, Fresno, CA, 93722
Customer inquiries
(559) 425-3000
Holding company
—
States served (1)
California
FCC 499 Filer ID
831615
Last filing
4/1/2026

Quantum Leap Communications, Inc.

Interconnected Voip
Agent for service of process
Corporation Service Company, 1156 15th St NW, Suite 605, Washington, DC, 20005
Agent phone / fax
(202) 371-8090 · fax (202) 371-1945
Headquarters
4035 Park East Court SE, Suite 300, Grand Rapids, MI, 49546
Customer inquiries
(616) 742-5100
Holding company
—
States served (15)
Colorado, Connecticut, Iowa, Michigan, Mississippi, New Hampshire, New Jersey, New York, North Carolina, Oregon, Pennsylvania, Tennessee, Texas, Virginia, Washington
FCC 499 Filer ID
834757
Last filing
4/1/2026

Quantum Messaging LLC

Interconnected Voip
Agent for service of process
Registerd Agent Inc, Quantum Messaging LLC, 1717 N Street NW, Washington, DC, 20036
Agent phone / fax
(307) 200-2803
Headquarters
9315 Busaco Prkwy, Winter Garden, FL, 34787
Customer inquiries
(561) 726-3500
Holding company
—
States served (1)
Florida
FCC 499 Filer ID
838939
Last filing
4/1/2026

Quantum PC Services, LLC

Interconnected Voip
Agent for service of process
Corporation Service Company, 1156 15th St NW, Suite 605, Washington, DC, 20005
Agent phone / fax
(202) 371-8090 · fax (202) 371-1945
Headquarters
876 S Lansing Ave, Sturgeon Bay, WI, 54235
Customer inquiries
(920) 256-1214
Holding company
—
States served (2)
Illinois, Wisconsin
FCC 499 Filer ID
835836
Last filing
4/1/2026

Quantum Services Group, LLC

Interconnected Voip

Also known as: Quantum Services Group, QSG, QSG IT, JW Tek

Agent for service of process
Northwest Registered Agent Service, Quantum Services Group, 1717 N Street NW, Suite 1, Washington, DC, 20036
Agent phone / fax
(509) 768-2249
Headquarters
1030 Doris Rd, Suite 100, Auburn Hills, MI, 48326
Customer inquiries
(888) 519-0774
Holding company
—
States served (59)
Alabama, Alaska, American Samoa, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, Guam, Hawaii, Idaho, Illinois, Indiana, Iowa, Johnston Atoll, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Midway Atoll, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Northern Mariana Islands, Ohio, Oklahoma, Oregon, Pennsylvania, Puerto Rico, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, US Virgin Islands, Vermont, Virginia, Wake Island, Washington, West Virginia, Wisconsin, Wyoming
FCC 499 Filer ID
838558
Last filing
4/1/2026

Quantum Telecom Inc

Interconnected Voip
Agent for service of process
Jonathan Marashlian, The Commpliance Group, Inc., Quantum Telecom Inc, Washington, DC, 19020
Agent phone / fax
(703) 714-1302 · fax (703) 563-6222
Headquarters
3466 Progress Drive, Suite 112, Bensalem, PA, 19020
Customer inquiries
(215) 781-1170
Holding company
—
States served (2)
New Jersey, Pennsylvania
FCC 499 Filer ID
832795
Last filing
4/1/2026

Quantum Telecommunications, Inc.

CAP/CLEC
Agent for service of process
Kristopher Twomey, Law Office of Kristopher E Twomey, PC, 1725 I Street, NW, Suite 300, Washington, DC, 20006
Agent phone / fax
(202) 681-1850
Headquarters
2975B Manchester Rd, Manchester, MD, 21102-1802
Customer inquiries
(410) 239-6920
Holding company
—
States served (1)
Maryland
FCC 499 Filer ID
819780
Last filing
4/1/2026

QuantumByte Solutions

Interconnected Voip
Agent for service of process
TELECOM SERVICES, 712 H Street NE, Street 2 Suite 1735, Washington, DC, 20002
Agent phone / fax
(202) 743-6256 · fax (305) 564-8801
Headquarters
9802 Caballero Dr, Houston, TX 77078, Houston, TX, 77078
Customer inquiries
(817) 203-2643
Holding company
QuantumByte Solutions
States served (1)
Texas
FCC 499 Filer ID
838071
Last filing
4/1/2025

QuantumShift Communications, Inc.

Local Reseller

Also known as: VCOM SOLUTIONS

Agent for service of process
NATASHA FREEMAN, COGENCY GLOBAL, 1025 VERMONT AVENUE NW, SUITE 1130, Washington, DC, 20005
Agent phone / fax
(678) 829-4395
Headquarters
12657 Alcosta Boulevard, Suite 418, San Ramon, CA, 94583
Customer inquiries
(800) 804-8266
Holding company
—
States served (51)
Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, Hawaii, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming
FCC 499 Filer ID
820327
Last filing
4/1/2026

Qubic

Interconnected Voip
Agent for service of process
Northwest Registered Agent Service Inc., 1717 N Street NW, STE 1, Washington, DC, 20036
Agent phone / fax
(509) 768-2249
Headquarters
22 Vine, Irvine, CA, 92620
Customer inquiries
(714) 514-0503
Holding company
—
States served (1)
California
FCC 499 Filer ID
837491
Last filing
4/1/2026

QuestBlue Systems Inc

Interconnected Voip

Also known as: QuestBlue Systems

Agent for service of process
Amy Purdy, URS AGENTS INC., 1100 H Street NW, Suite 840, Washington, DC, 20005
Agent phone / fax
(800) 567-4397 · fax (800) 567-4398
Headquarters
3100 Gateway Centre Blvd, Morrisville, NC, 27560
Customer inquiries
(919) 443-1617
Holding company
—
States served (48)
Alabama, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, Ohio, Oklahoma, Oregon, Pennsylvania, Puerto Rico, South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming
FCC 499 Filer ID
832900
Last filing
4/1/2026

Quick Cloud Technology LLC

Interconnected Voip
Agent for service of process
Washington DC Registered Agent LLC, 1717 N Street NW STE 1, Washington, DC, 20036
Agent phone / fax
(202) 403-0599
Headquarters
30 N Gould St Ste R, Sheridan, WY, 82801
Customer inquiries
(202) 403-0599
Holding company
—
States served (59)
Alabama, Alaska, American Samoa, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, Guam, Hawaii, Idaho, Illinois, Indiana, Iowa, Johnston Atoll, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Midway Atoll, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Northern Mariana Islands, Ohio, Oklahoma, Oregon, Pennsylvania, Puerto Rico, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, US Virgin Islands, Vermont, Virginia, Wake Island, Washington, West Virginia, Wisconsin, Wyoming
FCC 499 Filer ID
836977
Last filing
4/1/2026

Quick Copper Communications, LLC

Local Reseller
Agent for service of process
Orvin Moore, CliftonLarsonAllen LLP, 1025 Connecticut Avenue N.W., Suite 712, Washington, DC, 20036
Agent phone / fax
(678) 203-0271 · fax (404) 262-3271
Headquarters
55 South Ave, Suite 2, Garwood, NJ, 07027
Customer inquiries
(908) 654-7874
Holding company
—
States served (16)
California, Colorado, Connecticut, Florida, Illinois, Kentucky, Michigan, Minnesota, New Jersey, New York, North Carolina, Oklahoma, Pennsylvania, South Carolina, Texas, Washington
FCC 499 Filer ID
832489
Last filing
4/1/2026

Quick Fix Network LLC

Interconnected Voip

Also known as: Quick Fix Network, Voip Service Provider

Agent for service of process
Eddy Saldana, URS Agents Inc, 1100 URS Agents Inc, Suite 840, H Street, NW, Washington, DC, 20005
Agent phone / fax
(800) 567-4397 · fax (800) 567-4398
Headquarters
15428 Quick Fix Network LLC, Suite 335, Civic Drive, Victorville, CA, 92392
Customer inquiries
(833) 566-2523
Holding company
—
States served (1)
California
FCC 499 Filer ID
836772
Last filing
4/1/2026

Quick-Tel, Inc.

Toll Reseller
Agent for service of process
James Smith, Davis Wright Tremaine LLP, 1919 Pennsylvania Avenue NW, Suite 200, Washington, DC, 20006
Agent phone / fax
(202) 973-4288 · fax (202) 973-4499
Headquarters
PO Box 112, Wrightwood, CA, 92397-0112
Customer inquiries
(800) 875-9941
Holding company
—
States served (1)
California
FCC 499 Filer ID
820253
Last filing
4/1/2026

Quickdial, Inc.

Other Toll
Agent for service of process
Corporate Creations Network Inc., 1629 K Street, NW, #300, Washington, DC, 20006
Agent phone / fax
(561) 694-8107
Headquarters
2840 Ocean Parkway, Suite 20-G, Brooklyn, NY, 11235
Customer inquiries
(718) 676-1957
Holding company
—
States served (1)
New York
FCC 499 Filer ID
829692
Last filing
4/1/2026

QUICKLOGS LLC

Interconnected Voip
Agent for service of process
Registered Agents INC, 1717 N Street NW, STE 1, Washington, DC, 20036
Agent phone / fax
(307) 200-2803
Headquarters
Quicklogs LLC, 3923 MEDICI CT, MISSOURI CITY, TX, 77459
Customer inquiries
(800) 653-3407
Holding company
QUICKLOGS LLC
States served (1)
Texas
FCC 499 Filer ID
839139
Last filing
4/1/2026

Quik LLC

Interconnected Voip

Also known as: Quik

Agent for service of process
Northwest Registered Agent, INC, 1717 N Street NW, STE 1, Washington, DC, 20036
Agent phone / fax
(786) 369-5300
Headquarters
121 Alhambra Plz, Ste 1000, Coral Gables, FL, 33134
Customer inquiries
(844) 438-7845
Holding company
—
States served (1)
Florida
FCC 499 Filer ID
830664
Last filing
4/1/2025

QUIKSTARTLLC

Interconnected Voip
Agent for service of process
Washington DC Registered Agent LLC, 1717 N STREET NW, STE 1, Washington, DC, 20036
Agent phone / fax
(202) 403-0599
Headquarters
3857 BIRCH ST #25, NEWPORT BEACH, CA, 92660
Customer inquiries
(714) 586-5154
Holding company
QUIKSTART LLC
States served (59)
Alabama, Alaska, American Samoa, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, Guam, Hawaii, Idaho, Illinois, Indiana, Iowa, Johnston Atoll, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Midway Atoll, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Northern Mariana Islands, Ohio, Oklahoma, Oregon, Pennsylvania, Puerto Rico, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, US Virgin Islands, Vermont, Virginia, Wake Island, Washington, West Virginia, Wisconsin, Wyoming
FCC 499 Filer ID
837125
Last filing
4/1/2025

Quincy Telephone Co.

Incumbent LEC

Also known as: TDS Telecom

Agent for service of process
Mace Rosenstein, Covington & Burling LLP, Covington & Burling LLP, Mace Rosenstein, 1201 Pennsylvania Ave NW, Washington, DC, 20004
Agent phone / fax
(202) 662-5460 · fax (202) 778-5460
Headquarters
525 Junction Rd, Madison, WI, 53717-2152
Customer inquiries
(608) 664-4000
Holding company
TDS Telecommunications Corporation
States served (1)
Florida
FCC 499 Filer ID
806583
Last filing
4/1/2026

Quintillion Networks, LLC

Private Service Provider

Also known as: Quintillion

Agent for service of process
Ulises Pin, Morgan, Lewis & Brockius LLP, 1111 Pennsylvania NW, Washington, DC, 20004
Agent phone / fax
(202) 373-6664
Headquarters
3601 C Street, 1000B, Anchorage, AK, 99503
Customer inquiries
(800) 673-4394
Holding company
QH Parent Holdco, LLC
States served (1)
Alaska
FCC 499 Filer ID
832063
Last filing
4/1/2026

Quonix Solutions, LLC

Interconnected Voip

Also known as: Data102, Option9

Agent for service of process
Registered Agents Inc, 1717 N Street NW, STE 1, Washington, DC, 20036
Agent phone / fax
(719) 387-0000
Headquarters
102 South Tejon Street, Suite #220, Colorado Springs, CO, 80903
Customer inquiries
(719) 387-0000
Holding company
—
States served (1)
Colorado
FCC 499 Filer ID
834500
Last filing
4/1/2026

Quorum Technologies, Inc.

Interconnected Voip
Agent for service of process
Binda Mangat, Quorum Technologies, Inc., PO Box 163330, Washington, DC, 95816
Agent phone / fax
(916) 266-6440
Headquarters
PO Box 163330, SACRAMENTO, CA, 95816
Customer inquiries
(916) 669-5577
Holding company
—
States served (1)
California
FCC 499 Filer ID
834987
Last filing
4/1/2026

Qué tal Mobile, LLC

Local Reseller
Agent for service of process
InCorp Services, Inc., 1100 H Street, N.W., Suite 840, Washington, DC, 20005
Agent phone / fax
(702) 866-2500 · fax (702) 866-2689
Headquarters
90 N 4th Ave, PO Box 411, Brighton, CO, 80601
Customer inquiries
(855) 990-7825
Holding company
—
States served (54)
Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, Hawaii, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Puerto Rico, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, US Virgin Islands, Vermont, Virginia, Wake Island, Washington, West Virginia, Wisconsin, Wyoming
FCC 499 Filer ID
836622
Last filing
4/1/2026

Qwality Tel Inc.

Local Reseller
Agent for service of process
Eddy Saldana, URS Agents Inc., 1100 H Street, NW, suite 840, Washington, DC, 20005
Agent phone / fax
(800) 567-4297 · fax (800) 567-4298
Headquarters
477 CR 2500 North, Mahomet, IL, 61853
Customer inquiries
(217) 586-7809
Holding company
—
States served (1)
Illinois
FCC 499 Filer ID
834213
Last filing
4/1/2026

Qwest Corporation

Incumbent LEC

Also known as: CenturyLink QC

Agent for service of process
Susan McNeil, Lumen Technologies, 660 North Capitol St., NW, Suite 240, Suite 250, Washington, DC, 20001
Agent phone / fax
(202) 519-2897
Headquarters
931 14th Street, Denver, CO, 80202
Customer inquiries
(800) 201-4099
Holding company
Lumen Technologies Inc.
States served (14)
Arizona, Colorado, Idaho, Iowa, Minnesota, Montana, Nebraska, New Mexico, North Dakota, Oregon, South Dakota, Utah, Washington, Wyoming
FCC 499 Filer ID
808440
Last filing
4/1/2026

QWK.net Hosting, LLC

Interconnected Voip

Also known as: QWK Net, QWK Phone

Agent for service of process
Registered Agents, Inc, 1717 N Street NW, Suite 1, Washington, DC, 20036
Agent phone / fax
(202) 403-0599
Headquarters
1300 S. Yellowstone Highway, Idaho Falls, ID, 83402
Customer inquiries
(208) 522-7638
Holding company
—
States served (3)
Colorado, Idaho, Utah
FCC 499 Filer ID
830795
Last filing
4/1/2026

QxC Communications, Inc.

Interconnected Voip
Agent for service of process
Kris Twomey, RTC-CIS, Inc, 1775 Eye Street NW, Suite 205, Washington, DC, 20006
Agent phone / fax
(844) 216-0005 · fax (888) 315-4278
Headquarters
102 NE 2nd Street, Box 136, Boca Raton, FL, 33432
Customer inquiries
(561) 288-6989
Holding company
—
States served (1)
Florida
FCC 499 Filer ID
830801
Last filing
4/1/2025

QXTEL LIMITED

Other Toll
Agent for service of process
Corporate Creations Network Inc, 1629 K Street, Suite 300, Washington, DC, 20006
Agent phone / fax
(800) 672-9110 · fax (561) 694-1639
Headquarters
145 City Road, London, EC1V 1AZ
Customer inquiries
(305) 760-4130
Holding company
iQSTEL Inc
States served (1)
Florida
FCC 499 Filer ID
830640
Last filing
4/1/2026

Independent reference compiled from the public FCC Form 499 Filer Database for study and investigative use. Ministry of Cyber Affairs is not a government body and does not represent any listed provider. See the US directory overview for how to use the agent for service of process, and the directory hub for other countries.