Extension Group
TelecommunicationsVirginia, United States11-50 Employees
Extension Group is a Telecommunications company located in 13800 Coppermine Rd, Herndon, Virginia, United States.
Insights
Gathering insights about Extension Group…
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Extension Group Tech Stack
Extension Group uses 8 technology products and services including Open Graph, MySQL, Twemoji, and more. Explore Extension Group's tech stack below.
- Open GraphContent Management System
- MySQLDatabase
- TwemojiFont Scripts
- jQuery MigrateJavascript Libraries
- PHPProgramming Languages
- WebFactory MaintenanceWeb Platform Extensions
- NginxWeb Servers
- Apache HTTP ServerWeb Servers
Media & News
Extension Group's Email Address Formats
Extension Group uses at least 1 format(s):
| Extension Group Email Formats | Percentage |
| FLast@extensiongroup.com | 50% |
| FLast@extensiongroup.com | 50% |
Frequently Asked Questions
Where is Extension Group's headquarters located?
Extension Group's main headquarters is located at 13800 Coppermine Road Herndon, Virginia 20171 United States. The company has employees across 3 continents, including AfricaEuropeNorth America. What is Extension Group's official website and social media links?
Extension Group's official website is extensiongroup.com and has social profiles on LinkedIn.What is Extension Group's SIC code NAICS code?
Extension Group's SIC code is 8742 - Management Consulting Services NAICS code is 517 - Telecommunications.How many employees does Extension Group have currently?
As of January 2026, Extension Group has approximately 11 employees across 3 continents, including AfricaEuropeNorth America. Key team members include President: C. J.. Explore Extension Group's employee directory with LeadIQ.What industry does Extension Group belong to?
Extension Group operates in the Telecommunications industry. What technology does Extension Group use?
Extension Group's tech stack includes Open GraphMySQLTwemojijQuery MigratePHPWebFactory MaintenanceNginxApache HTTP Server. What is Extension Group's email format?
Extension Group's email format typically follows the pattern of FLast@extensiongroup.com. Find more Extension Group email formats with LeadIQ. 
Company Overview
- Headquarters
- 13800 Coppermine Road Herndon, Virginia 20171 United States
- Website
- extensiongroup.com
- SIC Code
- 8742 - Management Consulting Services
- NAICS Code
- 517 - Telecommunications
- Employees
- 11-50
Funding & Financials
- $1M
Extension Group's revenue is estimated to be in the range of $1M
Funding & Financials
- $1M
Extension Group's revenue is estimated to be in the range of $1M
Company Leadership
C. J.President
Employee Directory
1-888-653-2347 
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