Best Telecom Companies in Wisconsin, United States
The 52 best Telecom companies in Wisconsin, United States in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Nsight.
Our analysis of 50 Telecom companies
$56.1b in tracked funding; 87% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2025.
Ranked: Best Telecom companies in Wisconsin
| # | Company | Disclosed funding | Last round | Stage | Founder | Founded | Tech stack | Recent signals |
|---|---|---|---|---|---|---|---|---|
| 1 | Nsight Diversified telecommunications company | $90M | — | Late Stage | — | 1910 | JoomlaProton MailMicrosoft 365+17 | — |
| 2 | Millennium Broadband network materials supplier, connecting communities with planning, funding, and construction | $39M | 55 mo ago | Series A | — | 2003 | Cart FunctionalityNode.jsRadix UI+27 | 2 launchs |
| 3 | Bifrost Communications Provider of gigabit fiber-optic internet solutions | $7M | — | Funding Raised | — | 2015 | — | — |
| 4 | TDS Telecom Provider of international calling, fiber optic, and tv services | — | 113 mo ago | Funding Raised | — | 1969 | Amazon WebstoreCart FunctionalityAdobe Experience Manager+30 | — |
| 5 | Martin Group Telecom business software and services | — | 325 mo ago | Deadpooled | John Stensland Founder & CEO | 1980 | — | — |
| 6 | 3fold it 3Fold IT is a software company that offers cybersecurity, managed IT, compliance, cloud management, and VOIP… | — | — | — | — | 2006 | — | — |
| 7 | 5NINES Provider of internet and cloud services | — | — | Acquired | — | 2001 | — | — |
| 8 | AcenTek Fiber optic internet, voice, and video services for residential and business | — | — | Unfunded | Darren Moser CEO | 1956 | WordPressApple iCloud MailMicrosoft 365+19 | — |
Top 4 Telecom companies in Wisconsin
#1
Series A · Delavan, Wisconsin · founded 2003 · 288 employees$39.4Mraised▾
Broadband network materials supplier, connecting communities with planning, funding, and construction. They empower Internet Service Providers (ISPs) by providing comprehensive support for fiber broadband deployment. Their services encompass feasibility studies, geospatial engineering, and GIS training, ensuring efficient network design and management. They facilitate access to funding through grants and their Infrastructure Fund. As a reliable supplier, they offer a wide range of products, including conduit pipe, fiber optic cable, handholes, aerial supplies, and safety equipment, sourced from numerous vendors. They also provide rental and leasing options for equipment like fiber blowers, fusion splicers, and trailers. Their commitment extends to bridging the digital divide and enabling ISPs to thrive in a competitive landscape. They offer customized solutions, local inventory, and flexible financing to support projects from start to finish. They also offer geospatial services, webinars, and training.
- Nov 2021Series A—
- May 2021Series A$39.4M
#2
Late Stage · Green Bay, Wisconsin · founded 1910 · 201 employees$90Mraised▾
Nsight is a diversified telecommunications company which provides diverse telecom services through its subsidiaries: Cellcom (wireless communication service provider), Nsight Teleservices (business telephony, business internet) and Nsight Tower (tower management services). It also has sell food products (beverages, snacks) through its subsidiary Glas.
#3
Funding Raised · Denmark, Wisconsin · founded 2015 · 15 employees$7Mraised▾
Developer of fiber optic technology designed for internet service providers to offer effective gigabit fiber-optic internet connections at reasonable costs and with low power consumption. The company's technology offers effective fiber-optic signals invented a novel method, that can improve data rate and reach a much lower cost than full coherent. allow internet providers to upgrade their networks in a plug-and-play solution, to meet their customers' needs.
- Grant (prize money)$7M
#4
Funding Raised · Madison, Wisconsin · founded 1969 · 118 employees—raised▾
Provider of international calling, fiber optic, and tv services
Funding & investor landscape
Market landscape — 10 sub-themes by coverage
Share of Telecom coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
How research on 5G 6G in Wisconsin is moving
A read on the academic research around 5G 6G in Wisconsin — which themes are gaining ground, the institutions and researchers driving them, and how the tone is shifting. Based on 43 papers.
- University of Wisconsin–Madison38
- University of Wisconsin Carbone Cancer Center2
- University of Wisconsin–Milwaukee2
- University of Wisconsin–Whitewater2
- University of Wisconsin–Eau Claire1
- Beamforming15
- MIMO11
- Spatial multiplexing5
- Electronic engineering5
- Transceiver3
- Beamforming3→5
- Beamforming3
- MIMO2
- Wireless2
- Transmitter1
- Electronic engineering1
Common questions
Rohit lives in the feed. He covers what's moving right now — the funding rounds, launches and shifts breaking across the trade press — and ties them back to where the sector is heading.