Insights

Open Access Fiber Underline operates open-access fiber networks and offers a complete solution to engineer, privately finance, construct, and operate multi-purpose networks. This positions them as a potential partner or supplier for utilities and municipal broadband initiatives seeking faster deployment and shared infrastructure

Public-Private Partnerships Active collaboration with utilities and local governments, evidenced by partnerships and regional deployments in Colorado and El Paso County. This suggests opportunities with city contracts, right-of-way coordination services, and scalable network rollouts for public sector entities

Multi-Purpose Networking Underline’s technology enables fiber to support secure water systems and responsible energy creation in addition to internet access. This broad capability opens cross-sell possibilities with water utilities, energy providers, and smart city projects seeking integrated networks

Strong Growth & Funding Significant revenue range and a history of multiple funding rounds indicate market traction and capacity for expansion. Use this to approach potential strategic investors, lenders, or partners exploring co-investment in fiber expansion and open-access models

Enterprise-Grade Tech Stack Adoption of cloud and enterprise tools (Kubernetes, NetSuite, Zendesk, Intercom) alongside advertising platforms signals a mature operations backbone. This enables upsell to larger enterprise customers seeking reliable OSS/BSS, analytics, and customer support integrations

Similar companies to Underline

Underline Tech Stack

Underline uses 8 technology products and services including Amazon Advertising, Microsoft Advertising, Kubernetes, and more. Explore Underline's tech stack below.

Media & News

Underline's Email Address Formats

Underline uses at least 3 email formats:
Underline Email FormatsExamplePercentage
FLast@underline.comJDoe@underline.com
80%
First@underline.comJohn@underline.com
19%
FL@underline.comJD@underline.com
1%

Frequently Asked Questions

What is Underline's official website and social media links?

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Underline's official website is underline.com and has social profiles on LinkedIn and Crunchbase.

How much revenue does Underline generate?

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As of August 2026, Underline's annual revenue is estimated to be $500M - $1B.

What is Underline's NAICS code?

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Underline's NAICS code is 5415 - Computer Systems Design and Related Services.

How many employees does Underline have currently?

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As of August 2026, Underline has approximately 68 employees across 5 continents, including North America, Europe and Asia. Key team members include Chief Commercial Officer (cco): T. M., Head Of Software Engineering: J. L. and Senior Vice President Group Account Leader: K. W. Explore Underline's employee directory with LeadIQ.

What industry does Underline belong to?

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Underline operates in the Technology, Information and Internet industry.

What technology does Underline use?

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Underline's tech stack includes Amazon Advertising, Microsoft Advertising, Kubernetes, StackAdapt, Zendesk, NetSuite, Intercom and Piwik PRO Core.

What is Underline's email format?

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Underline's email format typically follows the pattern of FLast@underline.com. Find more Underline email formats with LeadIQ.

How much funding has Underline raised to date?

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As of August 2026, Underline has raised $43M in funding. The last funding round occurred on Aug 30, 2022 for $35M.

When was Underline founded?

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Underline was founded in 2019.
Underline logo

Underline

Technology, Information and InternetTexas, United States51-200 Employees

Underline is a Dallas-based technology company focused on building and operating fiber networks that connect communities. Its work centers on expanding equitable internet access and enabling essential public infrastructure, including secure water systems and responsible energy creation, through multi-purpose networks. The company provides an end-to-end solution to engineer, privately finance, construct, and operate these networks, aiming to reduce the deployment burden on communities.

Its networks can be licensed and deployed atop existing infrastructure to create shared, multi-tenant fiber capacity for multiple users and applications. The company targets municipalities and utilities seeking open-access fiber solutions to support public services and new providers. In April 2026, InCoax Networks AB announced a client engagement with Underline to deploy open-access fiber networks in Colorado and El Paso County, covering more than 100,000 planned gigabit-plus connections.

Section iconCompany Overview

NAICS Code
5415 - Computer Systems Design and Related Services
Founded
2019
Employees
51-200

Section iconFunding & Financials

  • $43M

    Underline has raised a total of $43M of funding over 3 rounds. Their latest funding round was raised on Aug 30, 2022 in the amount of $35M as a Venture Round.

  • $500M - $1B

    Underline's revenue is estimated to be in the range of $500M - $1B

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