Top 100 Contractors in NAICS 33421: Telephone Apparatus Manufacturing, Jul 2025–Jun 2026

Name: Top 100 Contractors in NAICS 33421: Telephone Apparatus Manufacturing, Jul 2025–Jun 2026
Creator: GovTribe

Parent companies by net contract obligations Jul 1, 2025 – Jun 30, 2026 Code page on GovTribe

The top 10 won 83% of NAICS 33421 contract dollars from July 2025 through June 2026

Contract obligations: $935,642,626 Net of deobligations, by contracts coded NAICS 33421 or a code under it
Contractors: 143 Parent companies with an obligation
Largest contractor: Rohde & Schwarz Usa, Inc. $403 million, 35.4% 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	Rohde & Schwarz Usa, Inc. Top agencies DOT (Department of Transportation)	$402,886,072	35.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
2	Frequentis Usa, Inc. Top agencies DOT (Department of Transportation)	$201,664,168	17.7%	Rank history: not on the FY2021–FY2023 lists, #3 in FY2024 and #1 in FY2025; down 1 since Jul 2024–Jun 2025.
3	Iron Bow Technologies, LLC Top agencies USAF (Department of the Air Force)	$116,014,059	10.2%	Rank history: not on the FY2021–FY2023 lists, #10 in FY2024 and #26 in FY2025; up 9 since Jul 2024–Jun 2025.
4	Motorola Solutions, Inc. 2 awardees Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$49,119,012	4.3%	Rank history: not on the FY2021–FY2023 lists, #6 in FY2024 and #3 in FY2025; up 3 since Jul 2024–Jun 2025.
5	Colossal Contracting LLC Top agencies SSA (Social Security Administration) USAF (Department of the Air Force)	$46,465,152	4.1%	Rank history: not on the FY2021 list, #2 in FY2022, #1 in FY2023, #2 in FY2024 and #4 in FY2025; up 1 since Jul 2024–Jun 2025.
6	Rohde & Schwarz GMBH & Co. KG Through Rohde & Schwarz Usa, Inc. Top agencies DOT (Department of Transportation)	$39,914,160	3.5%	Rank history: #39 in FY2021, not on the FY2022–FY2024 lists and #2 in FY2025; down 3 since Jul 2024–Jun 2025.
7	Gzo, Inc. Top agencies USAF (Department of the Air Force)	$30,120,993	2.6%	Rank history: not on the FY2021–FY2023 lists, #4 in FY2024 and #6 in FY2025; down 3 since Jul 2024–Jun 2025.
8	L3Harris Technologies, Inc. 3 awardees Top agencies Army (Department of the Army)	$28,084,569	2.5%	Rank history: #40 in FY2021, #13 in FY2022, #8 in FY2023, #8 in FY2024 and #5 in FY2025; down 6 since Jul 2024–Jun 2025.
9	Data Comm for Business Inc. Top agencies DOT (Department of Transportation)	$22,560,205	2.0%	Rank history: not on the FY2021–FY2024 lists and #7 in FY2025; up 20 since Jul 2024–Jun 2025.
10	JSI Telecom Inc. Top agencies DOJ (Department of Justice)	$5,838,120	0.5%	Rank history: not on the FY2021–FY2024 lists and #11 in FY2025; up 6 since Jul 2024–Jun 2025.
11	Dexian, LLC Through Disys Solutions, Inc. Top agencies USAF (Department of the Air Force)	$3,728,581	0.3%	Rank history: not on the FY2021–FY2024 lists and #15 in FY2025; up 12 since Jul 2024–Jun 2025.
12	Federal Data Systems LLC Through Feddata Technology Solutions, LLC Top agencies USAF (Department of the Air Force)	$3,307,082	0.3%	Rank history: not on the FY2021–FY2024 lists and #18 in FY2025; up 136 since Jul 2024–Jun 2025.
13	Radio One, Inc. Top agencies WHS (DOD Washington Headquarters Service)	$2,854,859	0.3%	Rank history: not on the FY2021–FY2024 lists and #16 in FY2025; new, not ranked in Jul 2024–Jun 2025.
14	Kaiva Services, LLC Top agencies HHS (Department of Health and Human Services)	$2,374,944	0.2%	Rank history: not on the FY2021–FY2023 lists, #65 in FY2024 and #17 in FY2025; up 56 since Jul 2024–Jun 2025.
15	Valkyrie Enterprises, LLC 3 awardees Top agencies Navy (Department of the Navy)	$2,252,103	0.2%	Rank history: not on the FY2021 list, #7 in FY2022, #10 in FY2023, #17 in FY2024 and #12 in FY2025; unchanged since Jul 2024–Jun 2025.
16	Dynalec Corporation Top agencies DLA (Defense Logistics Agency) Army (Department of the Army)	$1,917,865	0.2%	Rank history: #46 in FY2021, #24 in FY2022, #19 in FY2023, #35 in FY2024 and #23 in FY2025; up 11 since Jul 2024–Jun 2025.
17	HPI Federal LLC Top agencies DOT (Department of Transportation)	$1,849,034	0.2%	Rank history: not on the FY2021–FY2023 lists, #19 in FY2024 and #22 in FY2025; unchanged since Jul 2024–Jun 2025.
18	Xenturis LLC Top agencies USAF (Department of the Air Force)	$1,800,000	0.2%	Rank history: not on the FY2021–FY2024 lists and #20 in FY2025; new, not ranked in Jul 2024–Jun 2025.
19	Serco Inc Top agencies Navy (Department of the Navy)	$916,746	0.1%	Rank history: not on the FY2021–FY2022 lists, #6 in FY2023, #11 in FY2024 and #10 in FY2025; down 11 since Jul 2024–Jun 2025.
20	MCS of Tampa, Inc. Top agencies USAF (Department of the Air Force)	$893,217	0.1%	Rank history: #37 in FY2021, #23 in FY2022, #17 in FY2023, #23 in FY2024 and #25 in FY2025; up 2 since Jul 2024–Jun 2025.
21	TC Technology Solutions, LLC Top agencies USAF (Department of the Air Force)	$700,618	0.1%	Rank history: not on the FY2021–FY2024 lists and #27 in FY2025; new, not ranked in Jul 2024–Jun 2025.
22	Leidos Holdings, Inc. Through Leidos, Inc. Top agencies Navy (Department of the Navy)	$678,173	0.1%	Rank history: #5 in FY2021, #5 in FY2022, #3 in FY2023, #7 in FY2024 and #14 in FY2025; down 13 since Jul 2024–Jun 2025.
23	Solutions71, LLC Top agencies Army (Department of the Army)	$677,933	0.1%	Rank history: not on the FY2021–FY2023 lists, #13 in FY2024 and #21 in FY2025; down 10 since Jul 2024–Jun 2025.
24	Sterling Computers Corporation Top agencies USAF (Department of the Air Force)	$571,548	0.1%	Rank history: #17 in FY2021, #31 in FY2022, #24 in FY2023, not on the FY2024 list and #32 in FY2025; up 30 since Jul 2024–Jun 2025.
25	Corporation for Education Network Initiatives In California Top agencies Navy (Department of the Navy)	$571,058	0.1%	Rank history: not on the FY2021–FY2023 lists, #26 in FY2024 and #31 in FY2025; down 6 since Jul 2024–Jun 2025.
26	Rex Systems Incorporated Top agencies Navy (Department of the Navy)	$514,080	<0.1%	Rank history: not on the FY2021–FY2022 lists, #66 in FY2023, #30 in FY2024 and not on the FY2025 list; new, not ranked in Jul 2024–Jun 2025.
27	Govsmart, Inc. Top agencies USAF (Department of the Air Force)	$514,049	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 80 since Jul 2024–Jun 2025.
28	Hose-Mccann Telephone Co, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$350,003	<0.1%	Rank history: #69 in FY2021, #20 in FY2022, #41 in FY2023, #54 in FY2024 and #39 in FY2025; up 16 since Jul 2024–Jun 2025.
29	Electrosonic Inc. Top agencies Smithsonian (Smithsonian Institution)	$332,349	<0.1%	Rank history: not on the FY2021–FY2023 lists, #33 in FY2024 and #34 in FY2025; up 5 since Jul 2024–Jun 2025.
30	Verizon Through Verizon Business Network Services LLC Top agencies Smithsonian (Smithsonian Institution)	$320,000	<0.1%	Rank history: not on the FY2021–FY2023 lists, #42 in FY2024 and #33 in FY2025; up 5 since Jul 2024–Jun 2025.
31	DH Technologies, Inc. Top agencies USAF (Department of the Air Force)	$306,932	<0.1%	Rank history: not on the FY2021 list, #67 in FY2022, not on the FY2023–FY2024 lists and #35 in FY2025; new, not ranked in Jul 2024–Jun 2025.
32	Combat Power Solutions, LLC Top agencies USAF (Department of the Air Force)	$285,671	<0.1%	Rank history: not on the FY2021–FY2024 lists and #19 in FY2025; down 18 since Jul 2024–Jun 2025.
33	Advanced Programs, Inc. Top agencies DOS (Department of State)	$283,786	<0.1%	Rank history: not on the FY2021–FY2024 lists and #38 in FY2025; up 86 since Jul 2024–Jun 2025.
34	New TECH Solutions, Inc. Top agencies DODEA (Department of Defense Education Activity) USAF (Department of the Air Force)	$276,390	<0.1%	Rank history: #29 in FY2021, #54 in FY2022, #13 in FY2023, #52 in FY2024 and #29 in FY2025; down 3 since Jul 2024–Jun 2025.
35	Orbital Corporation of Tampa Top agencies DLA (Defense Logistics Agency)	$249,901	<0.1%	Rank history: not on the FY2021–FY2022 lists, #86 in FY2023, #49 in FY2024 and #52 in FY2025; up 1 since Jul 2024–Jun 2025.
36	Arhab LLC Top agencies USAF (Department of the Air Force)	$236,000	<0.1%	Rank history: not on the FY2021–FY2024 lists and #40 in FY2025; new, not ranked in Jul 2024–Jun 2025.
37	Ntua Wireless LLC Top agencies HHS (Department of Health and Human Services)	$207,746	<0.1%	Rank history: not on the FY2021–FY2024 lists and #47 in FY2025; up 4 since Jul 2024–Jun 2025.
38	Techwerks LLC Top agencies DODEA (Department of Defense Education Activity)	$190,822	<0.1%	Rank history: not on the FY2021–FY2024 lists and #48 in FY2025; new, not ranked in Jul 2024–Jun 2025.
39	Goldbelt Operations Support Services LLC Top agencies USAF (Department of the Air Force)	$179,245	<0.1%	Rank history: not on the FY2021–FY2024 lists and #50 in FY2025; new, not ranked in Jul 2024–Jun 2025.
40	Forum Communications Systems Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$166,322	<0.1%	Rank history: #75 in FY2021, #66 in FY2022, #27 in FY2023, #45 in FY2024 and #45 in FY2025; up 11 since Jul 2024–Jun 2025.
41	Aeronix, Inc. Top agencies Army (Department of the Army)	$160,000	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
42	Federal Merchants Corp. Top agencies DLA (Defense Logistics Agency)	$149,220	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
43	Mainstream IP Solutions Inc. Top agencies USAF (Department of the Air Force)	$144,962	<0.1%	Rank history: not on the FY2021–FY2022 lists, #52 in FY2023, #36 in FY2024 and #36 in FY2025; down 18 since Jul 2024–Jun 2025.
44	Morcom International, Inc. Top agencies DHS (Department of Homeland Security)	$141,812	<0.1%	Rank history: not on the FY2021–FY2024 lists and #58 in FY2025; new, not ranked in Jul 2024–Jun 2025.
45	Medtel Services, LLC Top agencies DOJ (Department of Justice)	$140,238	<0.1%	Rank history: #71 in FY2021, not on the FY2022–FY2024 lists and #55 in FY2025; new, not ranked in Jul 2024–Jun 2025.
46	Bighorn Solutions LLC Top agencies DLA (Defense Logistics Agency)	$130,331	<0.1%	Rank history: not on the FY2021–FY2024 lists and #59 in FY2025; new, not ranked in Jul 2024–Jun 2025.
47	Roanwell, LLC Top agencies DLA (Defense Logistics Agency)	$129,162	<0.1%	Rank history: #22 in FY2021, #27 in FY2022, #21 in FY2023, #27 in FY2024 and #28 in FY2025; down 21 since Jul 2024–Jun 2025.
48	Vastglobe Logistics LLC Top agencies DLA (Defense Logistics Agency)	$121,865	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
49	Elma Electronic Incorporated Top agencies Navy (Department of the Navy)	$119,260	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
50	RTS Solutionz Inc. Top agencies DOS (Department of State)	$110,665	<0.1%	Rank history: not on the FY2021–FY2024 lists and #62 in FY2025; new, not ranked in Jul 2024–Jun 2025.
51	David Clark Company Incorporated Top agencies Army (Department of the Army)	$103,620	<0.1%	Rank history: not on the FY2021–FY2024 lists and #63 in FY2025; new, not ranked in Jul 2024–Jun 2025.
52	Rick Cargo LLC Top agencies DLA (Defense Logistics Agency)	$101,561	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
53	Mega Wholesale LLC Top agencies DLA (Defense Logistics Agency)	$96,949	<0.1%	Rank history: not on the FY2021–FY2024 lists and #65 in FY2025; new, not ranked in Jul 2024–Jun 2025.
54	V & Z Enterprises Incorporated Top agencies HHS (Department of Health and Human Services)	$83,687	<0.1%	Rank history: not on the FY2021–FY2023 lists, #83 in FY2024 and #41 in FY2025; down 17 since Jul 2024–Jun 2025.
55	Painter Tool Incorporated Top agencies Navy (Department of the Navy)	$72,691	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
56	Compass Point LLC Top agencies USAF (Department of the Air Force)	$69,693	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
57	Sunrise GMBH Top agencies DOS (Department of State)	$69,388	<0.1%	Rank history: not on the FY2021–FY2024 lists and #73 in FY2025; new, not ranked in Jul 2024–Jun 2025.
58	H C Merchandisers, Inc. Top agencies DLA (Defense Logistics Agency)	$67,655	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
59	Ione Co., Ltd. Top agencies DOS (Department of State)	$65,758	<0.1%	Rank history: not on the FY2021–FY2024 lists and #80 in FY2025; new, not ranked in Jul 2024–Jun 2025.
60	Zeus Business Consulting Inc. Top agencies DLA (Defense Logistics Agency)	$62,674	<0.1%	Rank history: not on the FY2021–FY2024 lists and #51 in FY2025; down 12 since Jul 2024–Jun 2025.
61	Jo-Kell Inc. Top agencies Navy (Department of the Navy)	$57,385	<0.1%	Rank history: #54 in FY2021 and not on the FY2022–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
62	Curtiss-Wright DS, Inc. Top agencies USAF (Department of the Air Force)	$52,376	<0.1%	Rank history: not on the FY2021–FY2023 lists, #75 in FY2024 and #79 in FY2025; up 18 since Jul 2024–Jun 2025.
63	Thales Usa, Inc. Top agencies Navy (Department of the Navy)	$50,692	<0.1%	Rank history: not on the FY2021–FY2024 lists and #77 in FY2025; new, not ranked in Jul 2024–Jun 2025.
64	Alta Data Technologies LLC Top agencies Navy (Department of the Navy)	$49,164	<0.1%	Rank history: #88 in FY2021, not on the FY2022–FY2024 lists and #84 in FY2025; up 40 since Jul 2024–Jun 2025.
65	Rescue Phone Inc. Top agencies DHS (Department of Homeland Security)	$47,995	<0.1%	Rank history: not on the FY2021–FY2022 lists, #30 in FY2023, #56 in FY2024 and #75 in FY2025; down 13 since Jul 2024–Jun 2025.
66	Lykos Industries LLC Top agencies DLA (Defense Logistics Agency)	$47,242	<0.1%	Rank history: not on the FY2021–FY2024 lists and #82 in FY2025; new, not ranked in Jul 2024–Jun 2025.
67	FCN, Inc. Top agencies USAF (Department of the Air Force)	$47,182	<0.1%	Rank history: not on the FY2021–FY2022 lists, #58 in FY2023, not on the FY2024 list and #83 in FY2025; up 5 since Jul 2024–Jun 2025.
68	Telekom Deutschland GMBH Top agencies DOS (Department of State)	$45,329	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
69	E-Metrotel LLC Top agencies USDA (Department of Agriculture)	$43,847	<0.1%	Rank history: not on the FY2021–FY2022 lists, #78 in FY2023, #43 in FY2024 and #89 in FY2025; down 27 since Jul 2024–Jun 2025.
70	Astrea Project Management & Trading Services Top agencies DOS (Department of State)	$43,251	<0.1%	Rank history: not on the FY2021–FY2024 lists and #90 in FY2025; new, not ranked in Jul 2024–Jun 2025.
71	Larkos Packing and Distribution Inc. Top agencies DLA (Defense Logistics Agency)	$41,291	<0.1%	Rank history: not on the FY2021–FY2022 lists, #88 in FY2023, #64 in FY2024 and #100 in FY2025; up 7 since Jul 2024–Jun 2025.
72	Apple Inc. Top agencies DOS (Department of State)	$39,467	<0.1%	Rank history: not on the FY2021–FY2022 lists, #99 in FY2023, not on the FY2024 list and #91 in FY2025; up 40 since Jul 2024–Jun 2025.
73	N2Grate Government Technology Solutions, LLC Top agencies Navy (Department of the Navy)	$37,321	<0.1%	Rank history: not on the FY2021–FY2024 lists and #92 in FY2025; new, not ranked in Jul 2024–Jun 2025.
74	Xkl, L.L.C. Top agencies Smithsonian (Smithsonian Institution)	$36,706	<0.1%	Rank history: not on the FY2021 list, #50 in FY2022, not on the FY2023–FY2024 lists and #43 in FY2025; down 27 since Jul 2024–Jun 2025.
75	Knightscope, Inc. Top agencies VA (Department of Veterans Affairs)	$36,380	<0.1%	Rank history: not on the FY2021–FY2024 lists and #99 in FY2025; new, not ranked in Jul 2024–Jun 2025.
76	Technical Communities, Inc. Top agencies USAF (Department of the Air Force)	$35,442	<0.1%	Rank history: not on the FY2021–FY2024 lists and #94 in FY2025; new, not ranked in Jul 2024–Jun 2025.
77	WGI Telecom Inc. Top agencies DOS (Department of State)	$34,720	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
78	Baykal Tekno Medikal Elektronik Iletisim Insaat Limited Sirketi Top agencies USAF (Department of the Air Force)	$34,700	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
79	Leverage Information Systems, Inc. Top agencies DOI (Department of the Interior)	$34,494	<0.1%	Rank history: not on the FY2021–FY2024 lists and #96 in FY2025; new, not ranked in Jul 2024–Jun 2025.
80	4Tech Solutions, LLC Top agencies DLA (Defense Logistics Agency)	$32,931	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
81	Recycle TECH SA De CV Top agencies DOS (Department of State)	$32,119	<0.1%	Rank history: not on the FY2021–FY2024 lists and #98 in FY2025; new, not ranked in Jul 2024–Jun 2025.
82	TTM Technologies, Inc. 2 awardees, including Telephonics Corp Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$29,332	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
83	SSI Log L.L.C. Top agencies DOS (Department of State)	$27,256	<0.1%	Rank history: #97 in FY2021 and not on the FY2022–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
84	Metalloy Industries, Inc. Top agencies Navy (Department of the Navy)	$27,200	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
85	North Coast Electric Company Top agencies Army (Department of the Army)	$26,653	<0.1%	Rank history: not on the FY2021–FY2023 lists, #96 in FY2024 and not on the FY2025 list; up 10 since Jul 2024–Jun 2025.
86	Defense Maritime Solutions, Inc. Top agencies Navy (Department of the Navy)	$26,040	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
87	Audiosears Corp Top agencies DOT (Department of Transportation)	$25,805	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
88	Casale Technology Group LLC Top agencies DOI (Department of the Interior)	$25,744	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
89	3T-Innovations, LLC Top agencies USAF (Department of the Air Force)	$25,200	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
90	Mobile Communications America, Inc. Top agencies USAF (Department of the Air Force)	$24,690	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
91	Silver Star Office Equipment Trading Co LLC Top agencies DOS (Department of State)	$23,576	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
92	Aantilia LLC Top agencies DOI (Department of the Interior)	$23,452	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
93	MAK Technologies Inc. Through Singapore Telecommunications Ltd Top agencies DOS (Department of State)	$23,019	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
94	Native Innovation Inc. Top agencies HHS (Department of Health and Human Services)	$22,231	<0.1%	Rank history: not on the FY2021–FY2023 lists, #70 in FY2024 and not on the FY2025 list; new, not ranked in Jul 2024–Jun 2025.
95	Truebell Marketing & Trading. Llc. Top agencies DSCA (Defense Security Cooperation Agency)	$22,198	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
96	Server Supply.com, Inc. Top agencies DOI (Department of the Interior)	$21,005	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
97	Redhawk It Solutions, LLC Top agencies USAF (Department of the Air Force)	$20,637	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
98	Axelliant, LLC Top agencies HHS (Department of Health and Human Services)	$20,056	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
99	Slappey Communications, LLC Top agencies DOI (Department of the Interior)	$19,845	<0.1%	Rank history: #70 in FY2021 and not on the FY2022–FY2025 lists; up 23 since Jul 2024–Jun 2025.
100	Korea Testing Laboratory Top agencies Army (Department of the Army)	$19,784	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.

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100 of 143 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 33421

Code	Net obligations	Largest contractor
334210 Telephone Apparatus Manufacturing	$935,642,626	Rohde & Schwarz Usa, Inc.

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 $1.14 billion 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.
Period: the trailing 12 months end with the last month that ended at least 90 days ago, because the Department of Defense reports its contract actions to FPDS about 90 days late. The list is rebuilt each night.
Rank changes compare with Jul 2024–Jun 2025. "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 FY2021, #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.
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 33421 contractors in Jul 2025–Jun 2026?

1. Rohde & Schwarz Usa, Inc. ($403M), 2. Frequentis Usa, Inc. ($202M), 3. Iron Bow Technologies, LLC ($116M), 4. Motorola Solutions, Inc. ($49.1M), 5. Colossal Contracting LLC ($46.5M), 6. Rohde & Schwarz GMBH & Co. KG ($39.9M), 7. Gzo, Inc. ($30.1M), 8. L3Harris Technologies, Inc. ($28.1M), 9. Data Comm for Business Inc. ($22.6M), 10. JSI Telecom Inc. ($5.84M).

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