Top 100 Contractors in NAICS 517111: Wired Telecommunications Carriers, FY2023

Name: Top 100 Contractors in NAICS 517111: Wired Telecommunications Carriers, FY2023
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2022 – Sep 30, 2023 Code page on GovTribe

The top 10 won 71% of FY2023 NAICS 517111 contract dollars

Contract obligations: $135,242,017 Net of deobligations, by contracts coded NAICS 517111
Contractors: 209 Parent companies with an obligation
Largest contractor: Verizon Communications Inc. $55.5 million, 40.5% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Verizon Communications Inc. 14 awardees, including Verizon Business Network Services LLC, Verizon Washington, DC Inc. and Verizon Deutschland GMBH Top agencies DOT (Department of Transportation) DISA (Defense Information Systems Agency) Army (Department of the Army)	$55,503,740	40.5%	Rank history: #13 in FY2024 and not on the FY2025 list; new, not ranked in FY2022.
2	Global Telecom & Technology Inc. 2 awardees, including GTT Global Telecom Government Services, LLC and GTT Americas, LLC Top agencies DISA (Defense Information Systems Agency) Army (Department of the Army) USAF (Department of the Air Force)	$10,323,694	7.5%	Rank history: #7 in FY2024 and not on the FY2025 list; new, not ranked in FY2022.
3	Computer World Services, Corp. Top agencies USAF (Department of the Air Force)	$7,019,934	5.1%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
4	At&T Inc. 16 awardees, including At&T Enterprises, LLC, Bellsouth Telecommunications, LLC and Pacific Bell Telephone Company Top agencies USDA (Department of Agriculture) Army (Department of the Army) USAF (Department of the Air Force)	$6,552,599	4.8%	Rank history: #2 in FY2024 and #3 in FY2025; new, not ranked in FY2022.
5	Deutsche Telekom Business Solutions GMBH 4 awardees, including Telekom Deutschland GMBH and Combridge SRL Top agencies Army (Department of the Army) DOS (Department of State) Navy (Department of the Navy)	$4,752,772	3.5%	Rank history: #9 in FY2024 and #14 in FY2025; new, not ranked in FY2022.
6	Lumen Technologies, Inc. 8 awardees, including Lumen Technologies Government Solutions, Inc., Level 3 Communications, LLC and Centurylink Communications, LLC Top agencies Navy (Department of the Navy) DISA (Defense Information Systems Agency) USAF (Department of the Air Force)	$4,697,839	3.4%	Rank history: #4 in FY2024 and #29 in FY2025; new, not ranked in FY2022.
7	Optivor Technologies, LLC Top agencies USAF (Department of the Air Force)	$2,918,433	2.1%	Rank history: #34 in FY2024 and not on the FY2025 list; new, not ranked in FY2022.
8	Boingo Wireless, Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$2,146,071	1.6%	Rank history: #28 in FY2024 and not on the FY2025 list; new, not ranked in FY2022.
9	Beyon B.s.c Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$1,849,180	1.3%	Rank history: #17 in FY2024 and #21 in FY2025; new, not ranked in FY2022.
10	Qualitynet General Trading and Contracting Company WLL Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$1,549,127	1.1%	Rank history: #10 in FY2024 and #25 in FY2025; new, not ranked in FY2022.
11	Time Warner Cable Enterprises LLC 5 awardees, including Charter Communications Operating LLC, Charter Communications Holdings LLC and Bresnan Communications, LLC Top agencies Navy (Department of the Navy) VA (Department of Veterans Affairs) Army (Department of the Army)	$1,515,001	1.1%	Rank history: #20 in FY2024 and not on the FY2025 list; new, not ranked in FY2022.
12	Red Fiber Parent LLC 2 awardees, including Hawaiian Telcom Federal LLC and Hawaiian Telcom, Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$1,393,928	1.0%	Rank history: #68 in FY2024 and not on the FY2025 list; new, not ranked in FY2022.
13	Cavalier Telephone L.L.C. 6 awardees, including Valor Telecommunications of Texas, LLC, Paetec Communications, LLC and Windstream Kentucky East, LLC Top agencies DISA (Defense Information Systems Agency) USAF (Department of the Air Force) DOJ (Department of Justice)	$1,372,855	1.0%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
14	AST Telecom LLC Top agencies VA (Department of Veterans Affairs)	$1,205,280	0.9%	Rank history: #29 in FY2024 and not on the FY2025 list; new, not ranked in FY2022.
15	Systems Integration / Modeling & Simulation, Inc. Top agencies Navy (Department of the Navy)	$1,183,277	0.9%	Rank history: #32 in FY2024 and #35 in FY2025; new, not ranked in FY2022.
16	BT Americas Inc. Through 22Nd Century Networks, Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) DLA (Defense Logistics Agency)	$1,170,820	0.9%	Rank history: #16 in FY2024 and #16 in FY2025; new, not ranked in FY2022.
17	Frontier Communications Corporation 12 awardees, including Navajo Communications Co., Inc., Frontier Communications of the South, LLC and Frontier California Inc. Top agencies HHS (Department of Health and Human Services) DOI (Department of the Interior) DOJ (Department of Justice)	$1,161,284	0.8%	Rank history: #43 in FY2024 and #44 in FY2025; new, not ranked in FY2022.
18	National Capitol Contracting LLC 7 awardees, including Comcast Government Services LLC, Comcast Business Communications, LLC and Comcast of Boston Inc. Top agencies DISA (Defense Information Systems Agency) DOJ (Department of Justice) SSA (Social Security Administration)	$1,120,657	0.8%	Rank history: #62 in FY2024 and not on the FY2025 list; new, not ranked in FY2022.
19	Abacus Technology Corporation Top agencies USAF (Department of the Air Force)	$997,801	0.7%	Rank history: #45 in FY2024 and #85 in FY2025; new, not ranked in FY2022.
20	Kuwait Projects Company Holding KSC (CLOSED) Through Gulfnet Communications Co. Wll. Top agencies USSOCOM (United States Special Operations Command) USAF (Department of the Air Force)	$916,133	0.7%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
21	Cox Enterprises, Inc. 13 awardees, including Cox California Telcom, LLC, Cox Communications Hampton Roads, L.L.C. and Cox Kansas Telcom LLC Top agencies DHA (Defense Health Agency) Navy (Department of the Navy) USAF (Department of the Air Force)	$885,904	0.6%	Rank history: #47 in FY2024 and not on the FY2025 list; new, not ranked in FY2022.
22	Onevoice Government Solutions LLC Top agencies DISA (Defense Information Systems Agency) USAF (Department of the Air Force)	$882,968	0.6%	Rank history: #14 in FY2024 and #48 in FY2025; new, not ranked in FY2022.
23	T2 Technologies, Inc. Top agencies DISA (Defense Information Systems Agency)	$810,155	0.6%	Rank history: #39 in FY2024 and #32 in FY2025; new, not ranked in FY2022.
24	Allstream Business US LLC Through Zayo Group LLC Top agencies DISA (Defense Information Systems Agency) HHS (Department of Health and Human Services)	$781,552	0.6%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
25	Opencape Corporation Top agencies USAF (Department of the Air Force)	$760,505	0.6%	Rank history: not on the FY2024 list and #31 in FY2025; new, not ranked in FY2022.
26	BT North America Inc. Through 22Nd Century Networks, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$750,112	0.5%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
27	Teleguam Holdings, LLC Top agencies Navy (Department of the Navy) Army (Department of the Army)	$739,371	0.5%	Rank history: #53 in FY2024 and not on the FY2025 list; new, not ranked in FY2022.
28	Artel LLC Top agencies DISA (Defense Information Systems Agency) USAF (Department of the Air Force)	$732,518	0.5%	Rank history: #31 in FY2024 and not on the FY2025 list; new, not ranked in FY2022.
29	Frontier Communications Holdings, LLC Top agencies VA (Department of Veterans Affairs)	$719,029	0.5%	Rank history: #58 in FY2024 and not on the FY2025 list; new, not ranked in FY2022.
30	Intranet Communications Group, Inc. Top agencies USAF (Department of the Air Force)	$564,048	0.4%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
31	Wichita Tribe Industrial Development Commission Through Wichita Government Solutions, LLC Top agencies USAF (Department of the Air Force)	$546,434	0.4%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
32	SK Networks Co. Ltd. Through SK Networks Service Co.,Ltd Top agencies Army (Department of the Army)	$539,273	0.4%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
33	Applied Global Technologies LLC Top agencies USAF (Department of the Air Force)	$527,885	0.4%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
34	Granite Telecommunications, LLC 2 awardees Top agencies DISA (Defense Information Systems Agency) Navy (Department of the Navy) MDA (DOD Missile Defense Agency)	$438,856	0.3%	Rank history: #42 in FY2024 and #60 in FY2025; new, not ranked in FY2022.
35	Southern Light LLC Top agencies DISA (Defense Information Systems Agency) USAF (Department of the Air Force)	$436,727	0.3%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
36	GCI Communication Corp. 2 awardees, including GCI Cable, Inc. Top agencies Navy (Department of the Navy) DHS (Department of Homeland Security)	$422,337	0.3%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
37	STC Bahrain B.S.C Closed Top agencies Army (Department of the Army)	$417,830	0.3%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
38	RX3 Communications Inc. Top agencies Army (Department of the Army) DISA (Defense Information Systems Agency) USAF (Department of the Air Force)	$390,794	0.3%	Rank history: #24 in FY2024 and #47 in FY2025; new, not ranked in FY2022.
39	Analygence Inc. Through Tharros Defense, Inc. Top agencies Navy (Department of the Navy)	$362,635	0.3%	Rank history: #57 in FY2024 and #62 in FY2025; new, not ranked in FY2022.
40	V & Z Enterprises Incorporated Top agencies DOI (Department of the Interior)	$345,468	0.3%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
41	Turk Telekomunikasyon Anonim Sirketi Top agencies USAF (Department of the Air Force)	$345,272	0.3%	Rank history: #15 in FY2024 and #97 in FY2025; new, not ranked in FY2022.
42	Djibouti Telecom Top agencies Navy (Department of the Navy)	$344,895	0.3%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
43	N-Ovation Technology Group LLC Top agencies VA (Department of Veterans Affairs)	$333,322	0.2%	Rank history: #83 in FY2024 and #76 in FY2025; new, not ranked in FY2022.
44	Mainstream IP Solutions Inc. Top agencies USAF (Department of the Air Force)	$329,345	0.2%	Rank history: #30 in FY2024 and #39 in FY2025; new, not ranked in FY2022.
45	Microautomation, Inc. Top agencies Army (Department of the Army)	$311,648	0.2%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
46	Comcast Corporation 7 awardees, including Comcast Cable Communications, LLC and Comcast of Illinois Iii, Inc. Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) DOJ (Department of Justice)	$304,939	0.2%	Rank history: #59 in FY2024 and #81 in FY2025; new, not ranked in FY2022.
47	Govmobile, LLC Top agencies DOS (Department of State)	$287,720	0.2%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
48	Midatlanticbroadband, Inc. 2 awardees, including Protel Services, Inc. and Yondoo Broadband, LLC Top agencies USAF (Department of the Air Force)	$286,572	0.2%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
49	Telecom Italia SPA O TIM S.P.a. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DMA (Defense Media Activity)	$283,132	0.2%	Rank history: #18 in FY2024 and #20 in FY2025; new, not ranked in FY2022.
50	Masar Al-Tamkeen for Oil and Diesel Services Ltd. Co. Top agencies Army (Department of the Army)	$265,524	0.2%	Rank history: #73 in FY2024 and #92 in FY2025; new, not ranked in FY2022.
51	Securityhunter, Inc. Top agencies USAF (Department of the Air Force)	$237,101	0.2%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
52	Comcast Cable Communications, LLC 2 awardees Top agencies VA (Department of Veterans Affairs) Navy (Department of the Navy) DHA (Defense Health Agency)	$207,310	0.2%	Rank history: #79 in FY2024 and not on the FY2025 list; new, not ranked in FY2022.
53	Comcast Sportsnet New England, LLC Top agencies VA (Department of Veterans Affairs)	$199,000	0.1%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
54	Telecom Italia SPA Through Telecom Italia SPA O TIM S.P.A. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$191,246	0.1%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
55	Business Automation Technologies, Inc. Top agencies DISA (Defense Information Systems Agency) USAF (Department of the Air Force)	$187,954	0.1%	Rank history: not on the FY2024 list and #41 in FY2025; new, not ranked in FY2022.
56	Best Tech, Inc. Top agencies DMEA (Defense Microelectronics Activity)	$168,781	0.1%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
57	American Engineering Corporation Top agencies Navy (Department of the Navy)	$153,795	0.1%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
58	Groove Technology Solutions Inc. Top agencies USAF (Department of the Air Force)	$148,981	0.1%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
59	Cequel Communications LLC 4 awardees, including Cequel III Communications I LLC and Altice Dominicana SA Top agencies Army (Department of the Army) DOS (Department of State) VA (Department of Veterans Affairs)	$147,704	0.1%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
60	N2Grate Government Technology Solutions, LLC Top agencies USAF (Department of the Air Force)	$139,072	0.1%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
61	Wideopenwest Inc. 3 awardees, including Wideopenwest Finance LLC and Knology, Inc. Top agencies Army (Department of the Army) DOJ (Department of Justice)	$134,336	0.1%	Rank history: #90 in FY2024 and #68 in FY2025; new, not ranked in FY2022.
62	Wien Energie GMBH Top agencies DOS (Department of State)	$129,695	0.1%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
63	G2 Government Solutions LLC Top agencies Navy (Department of the Navy) DOL (Department of Labor) Army (Department of the Army)	$126,864	0.1%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
64	Crown Castle Fiber LLC Top agencies DISA (Defense Information Systems Agency) MDA (DOD Missile Defense Agency)	$124,398	0.1%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
65	SRT Communications Inc. Top agencies USAF (Department of the Air Force)	$119,974	0.1%	Rank history: #85 in FY2024 and #80 in FY2025; new, not ranked in FY2022.
66	Telephone and Data Systems, Inc. 3 awardees, including TDS Metrocom, LLC and TDS Telecommunications LLC Top agencies Navy (Department of the Navy) DOJ (Department of Justice)	$119,473	0.1%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
67	Scott Total Security Limited Top agencies USAF (Department of the Air Force)	$114,239	0.1%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
68	TKS Telepost Kabel-Service Kaiserslautern GMBH Top agencies Army (Department of the Army)	$114,014	0.1%	Rank history: not on the FY2024 list and #17 in FY2025; new, not ranked in FY2022.
69	Sacred Wind Communications, Inc. Top agencies HHS (Department of Health and Human Services)	$113,838	0.1%	Rank history: #82 in FY2024 and not on the FY2025 list; new, not ranked in FY2022.
70	Nippon Telegraph and Telephone Corporation Through Docomo Pacific, Inc. Top agencies Navy (Department of the Navy) DOJ (Department of Justice)	$112,602	0.1%	Rank history: #86 in FY2024 and not on the FY2025 list; new, not ranked in FY2022.
71	Golden West Telecommunications Cooperative Inc. Top agencies VA (Department of Veterans Affairs) DOI (Department of the Interior)	$111,391	0.1%	Rank history: #76 in FY2024 and not on the FY2025 list; new, not ranked in FY2022.
72	Wideopenwest Finance LLC Top agencies DHA (Defense Health Agency)	$109,400	0.1%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
73	Navega.com, Sociedad Anomima Top agencies DOS (Department of State)	$107,640	0.1%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
74	Southern Light Rail Inc. Top agencies HHS (Department of Health and Human Services) USDA (Department of Agriculture)	$103,250	0.1%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
75	Kriaanet Inc. Top agencies Army (Department of the Army)	$100,691	0.1%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
76	General Dynamics Corporation Through General Dynamics Mission Systems, Inc. Top agencies DHS (Department of Homeland Security)	$99,970	0.1%	Rank history: not on the FY2024 list and #2 in FY2025; new, not ranked in FY2022.
77	City of Loma Linda Top agencies VA (Department of Veterans Affairs)	$93,000	0.1%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
78	Hawaiian Telcom Services Company Inc 2 awardees, including Cincinnati Bell Telephone Company LLC Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy) DOE (Department of Energy)	$88,474	0.1%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
79	Sangoma Technologies Corporati Through Sangoma US Inc. Top agencies NARA (National Archives and Records Administration)	$87,480	0.1%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
80	Mitel Networks Corporation Through Mitel Business Systems, Inc. Top agencies USDA (Department of Agriculture)	$85,081	0.1%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
81	Panterra Networks Inc Top agencies Smithsonian (Smithsonian Institution)	$84,000	0.1%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
82	Executive Broadband Communications, LLC Top agencies Navy (Department of the Navy) DHA (Defense Health Agency) USAF (Department of the Air Force)	$79,848	0.1%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
83	Setouchi Hotels Inc. Top agencies DOS (Department of State)	$79,656	0.1%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
84	Radiomovil Dipsa S.a. DE C.V. 3 awardees, including Comunicacion Celular S A Comcel S A and Telefonos De Mexico Top agencies DOS (Department of State) Army (Department of the Army) DOJ (Department of Justice)	$77,434	0.1%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
85	Aquintas LLC Top agencies USAF (Department of the Air Force)	$74,961	0.1%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
86	Worldnet Telecommunications LLC Top agencies DOJ (Department of Justice) DOT (Department of Transportation)	$72,992	0.1%	Rank history: #61 in FY2024 and #79 in FY2025; new, not ranked in FY2022.
87	Triguard Security Inc. Top agencies USAF (Department of the Air Force)	$69,646	0.1%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
88	Liptinfor Niger SA Top agencies Army (Department of the Army)	$62,450	<0.1%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
89	Atlantic Broadband Finance LLC Through Cogeco US Finance, LLC Top agencies Navy (Department of the Navy)	$60,720	<0.1%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
90	Globe Telecom Inc. Through Innove Communications Inc. Top agencies DOS (Department of State)	$55,183	<0.1%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
91	Skyline Telecom Inc Top agencies Army (Department of the Army)	$53,032	<0.1%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
92	The Farmers Telephone Company, Inc. Top agencies DOI (Department of the Interior)	$52,691	<0.1%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
93	Sniperhill Internet Services LLC Through DHI Group Limited, LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$50,327	<0.1%	Rank history: #88 in FY2024 and not on the FY2025 list; new, not ranked in FY2022.
94	L3Harris Technologies, Inc. Top agencies USAF (Department of the Air Force)	$49,680	<0.1%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
95	Tohoku Electric Power Company Incorporated Through Tohknet Co., Inc. Top agencies Navy (Department of the Navy)	$49,410	<0.1%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
96	Real Image (Pty) Ltd Top agencies DOS (Department of State)	$47,883	<0.1%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
97	Alliance Networks W.L.L. Top agencies USAF (Department of the Air Force)	$45,323	<0.1%	Rank history: #12 in FY2024 and #11 in FY2025; new, not ranked in FY2022.
98	America Movil Peru S.a.C. 2 awardees, including Compania Dominicana De Telefonos S.A. Top agencies DOS (Department of State)	$45,317	<0.1%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
99	UEI YZCWCULXX3L7 Top agencies Army (Department of the Army)	$44,511	<0.1%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.
100	Oklahoma State Regents for Higher Education Top agencies Army (Department of the Army)	$43,032	<0.1%	Rank history: not on the FY2024–FY2025 lists; new, not ranked in FY2022.

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100 of 209 contractors listed here. See the rest on GovTribe.

How this ranking works

Source: every contract action FPDS records (as published on SAM.gov) in the period, as GovTribe received it.
Amounts are net obligations: what was obligated, less what was deobligated. Shares are of $137 million obligated before deobligations, so they never pass 100%.
Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
Fiscal year 2023 ran Oct 1, 2022 – Sep 30, 2023. The Department of Defense reports its contract actions to FPDS about 90 days late, so a fiscal year is ranked once they're in, in February, and the list doesn't change after.
Rank changes compare with FY2022. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
Rank lines show each company's rank on every fiscal year's list since FY2023, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list. The step from FY2022 takes the color of the rank change beside it.
Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

Quick answers

Who were the top 10 NAICS 517111 contractors in FY2023?

1. Verizon Communications Inc. ($55.5M), 2. Global Telecom & Technology Inc. ($10.3M), 3. Computer World Services, Corp. ($7.02M), 4. At&T Inc. ($6.55M), 5. Deutsche Telekom Business Solutions GMBH ($4.75M), 6. Lumen Technologies, Inc. ($4.7M), 7. Optivor Technologies, LLC ($2.92M), 8. Boingo Wireless, Inc. ($2.15M), 9. Beyon B.s.c ($1.85M), 10. Qualitynet General Trading and Contracting Company WLL ($1.55M).

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