What is The Onyx Group's NAICS code?

The Onyx Group's NAICS code is 54131 (Architectural Services).

Insights

Acquisition Momentum The Onyx Group was acquired by The Diallo Group in December 2024, signaling strategic growth and potential for expanded AEC capabilities and cross-sell opportunities within the combined organization.

Sponsorship & Outreach Active participation in federal small business events (SAME Federal Small Business Conference) indicates a focus on government sector opportunities and potential for selling to federal agencies through the Diallo Group.

Mid-market Focus Revenue is in the $1–10M range with a 51–200 employee base, suggesting engagement with mid-market clients and potential for expanding project scopes, PMOs, and repeat engagements.

Tech Footprint Stack includes Google services, Office 365, Nginx, and web discovery/search tools, presenting opportunities for upsell of productivity suites, collaboration platforms, and digital workplace modernization within client projects.

Industry Positioning Operating in architecture and planning with a large-scale peer landscape and similar-scale competitors, offering a pathway to differentiate via integrated AEC services, sustainable design capabilities, and scalable delivery models for government and commercial clients.

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The Onyx Group Tech Stack

The Onyx Group uses 8 technology products and services including iCIMS, WordPress, Microsoft 365, and more. Explore The Onyx Group's tech stack below.

iCIMS
Applicant Tracking Systems
WordPress
Content Management System
Microsoft 365
Email
Swiper
Javascript Libraries
Google Maps
Maps
Really Simple Discovery
Miscellaneous
Piwik PRO Core
Web Analytics
Nginx
Web Servers

Media & News

Diallo Group attends event SAME Federal Small Business Conference.
DBA The Diallo Group is proud to announce its participation in the SAME Federal Small Business Conference (SBC) - the flagship event for small business contractors and federal agencies across the architectural, engineering, and construction (AEC) industries.
Jun 03, 2025 | diallogrp.com

The Onyx Group's Email Address Formats

The Onyx Group uses at least 4 email formats:

The Onyx Group Email Formats	Example	Percentage
FLast@onyxgroup.com	JDoe@onyxgroup.com	84%
First@onyxgroup.com	John@onyxgroup.com	12%
FMiddleLast@onyxgroup.com	JMichaelDoe@onyxgroup.com	2%
Last@onyxgroup.com	Doe@onyxgroup.com	2%

Frequently Asked Questions

What is The Onyx Group's phone number?

You can contact The Onyx Group's main corporate office by phone at

+1-703-548-****

. For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is The Onyx Group's official website and social media links?

The Onyx Group's official website is diallogrp.com and has social profiles on LinkedIn.

How much revenue does The Onyx Group generate?

As of August 2026, The Onyx Group's annual revenue is estimated to be $1M - $10M.

What is The Onyx Group's SIC code and NAICS code?

The Onyx Group's SIC code is 8712 - Architectural Services and NAICS code is 54131 - Architectural Services.

How many employees does The Onyx Group have currently?

As of August 2026, The Onyx Group has approximately 52 employees across 3 continents, including North America, Asia and Europe. Key team members include Chief Executive Officer: O. D., Director Of Finance: J. T. and Officer Manager: L. C. Explore The Onyx Group's employee directory with LeadIQ.

What industry does The Onyx Group belong to?

The Onyx Group operates in the Architecture and Planning industry.

What technology does The Onyx Group use?

The Onyx Group's tech stack includes iCIMS, WordPress, Microsoft 365, Swiper, Google Maps, Really Simple Discovery, Piwik PRO Core and Nginx.

What is The Onyx Group's email format?

The Onyx Group's email format typically follows the pattern of FLast@onyxgroup.com. Find more The Onyx Group email formats with LeadIQ.

When was The Onyx Group founded?

The Onyx Group was founded in 1982.

The Onyx Group

Q: What is The Onyx Group's official website and social media links?

The Onyx Group's official website is diallogrp.com. The Onyx Group has social profiles on LinkedIn.

Q: How many employees does The Onyx Group have currently?

The Onyx Group has approximately 52 employees.

Q: What technology does The Onyx Group use?

The Onyx Group's tech stack includes Elementor, oEmbed, Isotope, Font Awesome, WordPress.

Architecture and PlanningVirginia, United States51-200 Employees

The Onyx Group operates in the architecture and planning industry and is based in Alexandria, Virginia, United States. The company employs between 51 and 200 people. In December 2024, The Onyx Group was acquired by The Diallo Group, marking a milestone in the Diallo Group's strategic growth. The organization maintains an online presence at https://diallogrp.com. Its technology stack includes Google Cloud DNS, Google Fonts API, Element UI, jQuery, Isotope, jQuery Migrate, Piwik PRO Core, and Magnific Popup. Reported revenue is in the range of $1 million to $10 million.