Where is ADTRAN located?

ADTRAN is headquartered in Huntsville, United States. It is registered at Huntsville, Alabama.

How many employees does ADTRAN have?

As of Sep 30, 2026, the latest employee count at ADTRAN is 2467.

What is the annual revenue of ADTRAN?

Annual revenue of ADTRAN is more than $1B as on Dec 31, 2025

Where does ADTRAN rank among its competitors?

ADTRAN ranks 22nd amongst 861 active competitors, of which 63 are funded. It stands 11th in terms of total funding among its competitors. The most recent competitor to raise funding was Calix, which secured an undisclosed amount in Jun, 2026.

Who are the top competitors of ADTRAN?

ADTRAN's top competitors include Mavenir, Calix and Ericsson. Among them, Calix secured the most recent funding round in June, 2026.

ADTRAN - 2026 Company Profile, Team, Funding, Competitors & Financials

Company Details

Cloud based network monitoring solutions. It provides open optical networking systems, access and aggregation products, and subscriber solutions. It include optical line systems, terminals, pluggable optics, aggregation switches, and optical line terminals. The company also provides automation and insights, network infrastructure assurance, and global services. The services encompass consulting, deployment, cloud, software, and support.

Website: www.adtran.com/en
Social
Registered Address: Huntsville, Alabama

Key Metrics

Founded Year

1985

Location

Huntsville, United States

Stage

Public

Investors

Herald Investment Management & 1 more

Ranked

22^nd among 861 active competitors

Annual Revenue

$1B+ as on Dec 31, 2025

Employee Count

2,467 as on Sep 30, 2026

Investment & Acquisitions

CCS (Cambridge Communication Systems) & 3 more

Similar Companies

Gigamon & 503 more

Exit Details

Public

View ADTRAN's full profile

ADTRAN is associated with 4 legal entities given below:

Legal Entity Name	Date of Incorporation	Revenue	Latest Employee Count	Reports
Adtran, Inc. CIN: 175843094 , United States, Active	Dec 22, 2020	-	-	-
ADTRAN HOLDINGS, INC. CIN: 926282 , United States, Active	Aug 09, 2021	$1B+ (As on Dec 31, 2025)	3307 (As on Dec 31, 2022)	-
ADTRAN NETWORKS INDIA PRIVATE LIMITED CIN: U74120TG2012FTC080372 , India, Active	Apr 17, 2012	0 - ₹10 Cr (As on Mar 31, 2025)	1 (As on Aug 31, 2023)
ADTRAN, INC CIN: 630918200 , United States, Active	Dec 26, 999	-	847 (As on Dec 31, 2024)	-

ADTRAN got listed on Aug 09, 1994.

Click here to take a look at ADTRAN's IPO in detail

ADTRAN is a funded company. ADTRAN has 2 institutional investors.

View details of ADTRAN's funding rounds and investors

ADTRAN's employee count trend

ADTRAN has 2,467 employees as of Sep 26. Here is ADTRAN's employee count trend over the years:

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Top competitors of ADTRAN include Mavenir, Calix and Ericsson. Here is the list of Top 10 competitors of ADTRAN, ranked by Tracxn score:

Rank	Company Details	Short Description	Total Funding	Investors	Tracxn Score
1st	Mavenir 2005, Richardson (United States), Acquired	Developer of cloud native software for mobile network operator infrastructure	$105M	North Bridge Venture Partners, Alloy Ventures ... & 12 others	76/100
2nd	Calix 1999, Petaluma (United States), Public	Provider of communication equipment	$108M	Meritech, Kinetic Ventures & 17 others	74/100
3rd	Ericsson 1876, Stockholm (Sweden), Public	Provider of telecom equipment and software solutions	-	Kepha Partners, Cevian & 10 others	74/100
4th	Gigamon 2004, Santa Clara (United States), Acquired	Provider of deep observability pipeline for hybrid cloud infrastructure management	$22.8M	Siris Capital, Highland Capital Partners & 1 others	71/100
5th	Auvik 2011, Waterloo (Canada), Acquired	Cloud based network monitoring and management solutions	$33.4M	OpenView, Rho Canada Partners & 5 others	71/100
6th	Ciena 1992, Hanover (United States), Public	Provider of networking systems, automation software, components, and related services	-	Western Technology Investment, Worldview Technology Partners ... & 13 others	71/100
7th	Ribbon 1997, Westford (United States), Public	Provider of IP optical networking and cloud and communications software	$41M	Legatum, Bedrock Ventures & 25 others	69/100
8th	D-Link 1986, Germany, Public	Manufacturer of network switches, cameras, wireless, IP surveillance, and accessories	-	Europa, WI Harper Group & 1 others	68/100
9th	Blue Planet 2000, Hanover (United States), Acquired	Developer of cloud-native software for network automation and orchestration solutions	$97.6M	Meritech, Tenaya Capital & 6 others	68/100
10th	LogicMonitor 2008, Santa Barbara (United States), Acquired	Cloud based platform offering IT infrastructure monitoring software	$952M	Golub Capital, PSG & 1 others	67/100
22nd	ADTRAN 1985, Huntsville (United States), Public	Cloud based network monitoring solutions	-	Herald Investment Management, EGORA Ventures	59/100

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ADTRAN has made 1 investments in companies including CCS (Cambridge Communication Systems). ADTRAN has also acquired 3 companies including SmartRG and Bluesocket.

Here is the list of investments & acquisitions:

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Date of Investment/Acquisition	Type	Company Name	Founded Year	Location
Feb 08, 2019	Investments	CCS (Cambridge Communication Systems)	2010	India
Dec 06, 2018	Acquisition	SmartRG	2012	Portland (United States)
Aug 09, 2011	Acquisition	Bluesocket	1999	Burlington (United States)