Company lists · Data refreshed September 2026

Top 25 Telecommunications consulting companies based in Greece

Name: Telecommunications consulting companies based in Greece
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 76 companies tracked

RevenueBase identified 76 telecommunications consulting companies headquartered in Greece as of September 2026 and tracks 863 professional contacts across them, including 228 with verified work emails. Athens is the largest hub.

This list covers telecommunications consulting companies headquartered in Greece, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 16, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 16, 2026 86% judged on-target in blind review

76Companies

863Contacts tracked

228Verified emails

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The 25 largest telecommunications consulting companies based in Greece

Ranked by team size

Top 25 of 76 telecommunications consulting companies based in Greece, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to telecommunications consulting companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Cosmos Business Systems	Partial evidence	Metamorfosi, GreeceHQ checked Sep 16, 2026	51-200	202 contacts →
	Partial evidence “Cosmos Business Systems is a leading Greek company that specializies in Information Technology and Telecommunications.” Source: RevenueBase Database · checked Sep 16, 2026
2	Combotech	Indirect evidence	Peristeri, GreeceHQ checked Sep 16, 2026	51-200	40 contacts →
	Indirect evidence “ComboTech offers specialized services - to business customers, as well as private end users - in the broader area of modern communication technologies and telecoms sites'…” Source: RevenueBase Database · checked Sep 16, 2026
3	PSP Telecom & Networking	Indirect evidence	Athens, GreeceHQ checked Sep 16, 2026	51-200	34 contacts →
	Indirect evidence “Professional Service Partners (PSP), with its people-centered communication message “People Supporting People”, is a key player in the Greek market providing integrated services…” Source: RevenueBase Database · checked Sep 16, 2026
4	Circet Hellas	Partial evidence	Gerakas, GreeceHQ checked Sep 16, 2026	51-200	33 contacts →
	Partial evidence “We are Circet, the number 1 Network Service Provider in Europe and a major player of the fast-growing global telecommunications industry.” Source: RevenueBase Database · checked Sep 16, 2026
5	Telesto Technologies	Indirect evidence	Athens, GreeceHQ checked Sep 16, 2026	11-50	29 contacts →
	Indirect evidence “TELESTO Technologies, based in Athens-Greece, specializes in Broadband Wireless, Telematics and Telemetry.” Source: RevenueBase Database · checked Sep 16, 2026
6	Enomix	Indirect evidence	Chania, GreeceHQ checked Sep 16, 2026	11-50	23 contacts →
	Indirect evidence “We at ENOMIX are a group of passionate people delighted to work and contribute in the area of Next Generation Networks, Competition and Infrastructure Development.” Source: RevenueBase Database · checked Sep 16, 2026
7	Evolutionprojects	Partial evidence	Ilioúpolis, GreeceHQ checked Sep 16, 2026	11-50	21 contacts →
	Partial evidence “Technology - Consulting - Communication” Source: RevenueBase Database · checked Sep 16, 2026
8	Toolbox Consulting Services	Indirect evidence	Athens, GreeceHQ checked Sep 16, 2026	51-200	21 contacts →
	Indirect evidence “TCS Toolbox provides premier consultancy services for the execution of large-scale Information Technology and Communications projects, serving both public and private sectors…” Source: RevenueBase Database · checked Sep 16, 2026
9	Zefxis TEL	Partial evidence	Ακταίο, GreeceHQ checked Sep 16, 2026	201-500	18 contacts →
	Partial evidence “Zeuxis is an innovative company specializing in telecommunications networks and electrical-electronic installations.” Source: RevenueBase Database · checked Sep 16, 2026
10	Fasmetrics SA	Indirect evidence	Athens, GreeceHQ checked Sep 16, 2026	11-50	17 contacts →
	Indirect evidence “Established in 2005, FASMETRICS has grown into a trusted partner for mobile network operators and technology vendors worldwide.” Source: RevenueBase Database · checked Sep 16, 2026
11	Opencomm SA	Indirect evidence	Kallithéa, GreeceHQ checked Sep 16, 2026	11-50	14 contacts →
	Indirect evidence “OPENCOMM SA is a dynamic company specializing in communication technology and software development.” Source: RevenueBase Database · checked Sep 16, 2026
12	Voiceland	Indirect evidence	Néa Ionía, GreeceHQ checked Sep 16, 2026	11-50	12 contacts →
	Indirect evidence “Η VOICELAND δραστηριοποιείται στο χώρο των τηλεπικοινωνιών.” Source: RevenueBase Database · checked Sep 16, 2026
13	Advanced Integrated Communication	Indirect evidence	Paiania, GreeceHQ checked Sep 16, 2026	11-50	12 contacts →
	Indirect evidence “Η Advanced Integrated Communication E.Π.Ε, διαρκώς εξελισσόμενη εταιρεία στον χώρο της υψηλής τεχνολογίας, αποτελείται από στελέχη τα όποια από το θέτουν ως προτεραιότητα την…” Source: RevenueBase Database · checked Sep 16, 2026
14	Lexis SA	Indirect evidence	Gerakas, GreeceHQ checked Sep 16, 2026	11-50	10 contacts →
	Indirect evidence “LEXIS S.A.” Source: RevenueBase Database · checked Sep 16, 2026
15	IMTEL	Indirect evidence	Μεταμορφωση, GreeceHQ checked Sep 16, 2026	11-50	10 contacts →
	Indirect evidence “IMTEL provides a range of communication technologies that can help a business of any size to meet the challenges of our times.” Source: RevenueBase Database · checked Sep 16, 2026
16	LTCOM	Partial evidence	Thessaloniki, GreeceHQ checked Sep 16, 2026	11-50	10 contacts →
	Partial evidence “LTcom was established in 1994 and incorporates in the area of telecommunications, while it specializes in telecommunications systems for integrated digital voice and data…” Source: RevenueBase Database · checked Sep 16, 2026
17	Dynacom LTD	Partial evidence	Kallithea, GreeceHQ checked Sep 16, 2026	1-10	9 contacts →
	Partial evidence “Dynacom Ltd: Your Trusted Partner in Integrated Telecommunication and Networking Solutions At Dynacom Ltd, we specialize in the counseling, design, and implementation of…” Source: RevenueBase Database · checked Sep 16, 2026
18	Wavetel S.A	Partial evidence	Piraeus, GreeceHQ checked Sep 16, 2026	11-50	7 contacts →
	Partial evidence “Wavetel S.A is a Greek company specialized in the sector of Telecommunications.” Source: RevenueBase Database · checked Sep 16, 2026
19	City Consulting Greece	Partial evidence	Peristeri, GreeceHQ checked Sep 16, 2026	1-10	7 contacts →
	Partial evidence “City Consulting Ltd.” Source: RevenueBase Database · checked Sep 16, 2026
20	BTS Business Telecom Solutions	Partial evidence	Athens, GreeceHQ checked Sep 16, 2026	11-50	6 contacts →
	Partial evidence “BTS is active in the provision of integrated telecommunications and technology solutions, providing a range of services that offer high added value to our customers.” Source: RevenueBase Database · checked Sep 16, 2026
21	DTNS	Partial evidence	Nea Philadelpheia, GreeceHQ checked Sep 16, 2026	11-50	5 contacts →
	Partial evidence “DTNS provides nationwide integrated telecommunication solutions since its foundation in 1994.” Source: RevenueBase Database · checked Sep 16, 2026
22	Pscom Unified Communications	Partial evidence	Attica, GreeceHQ checked Sep 16, 2026	1-10	5 contacts →
	Partial evidence “Pscom Unified Communication was founded in 2005 by executives with a strong background in telecommunications and networks dating back to 1980.” Source: RevenueBase Database · checked Sep 16, 2026
23	Praxis Factor Telecoms S.A	Indirect evidence	Athens, GreeceHQ checked Sep 16, 2026	1-10	5 contacts →
	Indirect evidence “At Praxis Factor Telecoms we are privileged to have the full picture being part of the technological evolution.” Source: RevenueBase Database · checked Sep 16, 2026
24	Lumina Link	Indirect evidence	Néa Smýrni, GreeceHQ checked Sep 16, 2026	1-10	4 contacts →
	Indirect evidence “Lumina Link Fiber Solutions is an innovative telecom infrastructure company providing design, project management, network deployment, maintenance, and operation services for fixed…” Source: RevenueBase Database · checked Sep 16, 2026
25	Kalentel Kaltsonis Energy Telecom	Strong evidence	Athens, GreeceHQ checked Sep 16, 2026	1-10	2 contacts →
	Strong evidence “KALENTEL is a technical consulting and commercial company established in early 2022, based in 25 years of knowledge in energy and telecommunications technology.” Source: RevenueBase Database · checked Sep 16, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: telecommunications consulting companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names telecommunications consulting companies.
Partial evidence: Its own public description names part of telecommunications consulting companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name telecommunications consulting companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 76 telecommunications consulting companies based in Greece

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Telecommunications consulting companies based in Greece at a glance

As of Sep 16, 2026

26.4%Verified-email coverage

11.4Average contacts per company

11-50Median size (employees)

28.9%Largest-city concentration · Athens

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Email recency for this list is measured worldwide rather than for Greece, so it is reported there. Company counts and contact totals on this page are exact for Greece, over 76 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among telecommunications consulting companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Greece whose own description of what they do matches “telecommunications consulting companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names telecommunications consulting companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among telecommunications consulting companies, and records with no verified work email. Companies headquartered outside Greece are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 228 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 16, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names telecommunications consulting companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many telecommunications consulting companies are there based in Greece?

RevenueBase identified 76 telecommunications consulting companies headquartered in Greece as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Cosmos Business Systems, headquartered in Metamorfosi, tops this list with the largest team on record.

Which city has the most telecommunications consulting companies?

Athens leads with 22 headquartered companies, followed by Attica (2) and Chalandri (2).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 228 verified decision-maker contacts tracked across these 76 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 16, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.