Company lists · Data refreshed September 2026
Top 25 On-orbit servicing companies worldwide
RevenueBase identified 206 on-orbit servicing companies worldwide as of September 2026 and tracks 11,030 professional contacts across them, including 3,345 with verified work emails. The United States is the largest market and Houston the largest hub.
This list covers on-orbit servicing companies worldwide, 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 20, 2026. Country and city lists for on-orbit servicing companies follow the table.
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.
The 25 largest on-orbit servicing companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 2,566 contacts → | ||||
Indirect evidence “Telespazio works to bring Space closer to Earth, benefitting citizens, institutions and companies in a variety of sectors ranging from design and development of space systems to…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,171 contacts → | ||||
Indirect evidence “SSL, based in Palo Alto, California, is a leading provider of advanced spacecraft systems, with broad expertise to support commercial and government satellite operators and…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 3 | 452 contacts → | ||||
Strong evidence “Founded in 2013, Astroscale is the global leader in on-orbit servicing, dedicated to the secure and sustainable development of space.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 4 | 401 contacts → | ||||
Indirect evidence “Surrey Satellite Technology Limited (SSTL) is at the forefront of space innovation delivering customisable complete mission solutions for Earth observation, science…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 5 | 386 contacts → | ||||
Indirect evidence “At ERT, we have been providing high-value solutions and expertise to our partners at U.S.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 6 | 381 contacts → | ||||
Partial evidence “D-Orbit is a global market leader in the space logistics and transportation service industries with a track record of space-proven technologies and successful missions.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 7 | 334 contacts → | ||||
Indirect evidence “Redwire is a new leader in mission critical space solutions and high reliability components for next generation space systems and infrastructure.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 8 | 309 contacts → | ||||
Indirect evidence “SSC is a global provider of advanced space services.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 9 | 264 contacts → | ||||
Indirect evidence “EnduroSat is a space infrastructure builder that engineers, builds, and operates exceptional satellites.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 10 | 248 contacts → | ||||
Indirect evidence “Dhruva Space is a full-stack Space Engineering solutions provider based in Hyderabad, India.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 11 | 192 contacts → | ||||
Indirect evidence “We are an end-to-end space mobility operator.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 12 | 162 contacts → | ||||
Indirect evidence “Turion Space is building the infrastructure to secure and sustain the future of space.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 13 | 159 contacts → | ||||
Partial evidence “ISISPACE Group is a vertically integrated small satellite company, focused on providing high value, cost-effective space solutions by making use of the latest innovative…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 14 | 148 contacts → | ||||
Indirect evidence “AAC Clyde Space provides small satellite technologies and services that help governments, businesses and institutions access high-quality data from space.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 15 | 110 contacts → | ||||
Indirect evidence “We are an Indian space-tech company specialising in green propulsion systems.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 16 | 109 contacts → | ||||
Partial evidence “Infinite Orbits is a NewSpace company that is revolutionizing In-Orbit Services with innovative spacecrafts powered by its Rendez Vous solution, an advanced autonomous…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 17 | 91 contacts → | ||||
Indirect evidence “A Embratel Star One, subsidiária integral da Embratel, é a maior empresa de satélite do Brasil e da América Latina e opera cinco satélites GEO (Star One C1, C2, C3, e C12 e…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 18 | 90 contacts → | ||||
Indirect evidence “Starfish Space is building the infrastructure for humanity's expansion into Space.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 19 | 88 contacts → | ||||
Partial evidence “Orbit Fab envisions a thriving in-space market for products and services that support both existing space businesses (communications and Earth observation) and new industries like…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 20 | 78 contacts → | ||||
Strong evidence “ClearSpace is a leading In-Orbit Servicing (IOS) company with a vision to enable a circular space economy by bringing maintenance and services to orbit.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 21 | 66 contacts → | ||||
Indirect evidence “Exolaunch is a global leader in launch mission management, satellite integration and satellite deployment technologies.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 22 | 60 contacts → | ||||
Partial evidence “From ground to orbit, we bring clarity to complexity powering secure SATCOM, space operations, and next-generation sensor technologies.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 23 | 56 contacts → | ||||
Indirect evidence “TRL Space Systems is a 100% Czech SME and mission integrator delivering complete satellite capabilities from mission design to operations and data delivery.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 24 | 52 contacts → | ||||
Indirect evidence “At Katalyst Space Technologies, our goal is to fundamentally shake up how the satellite industry works.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 25 | 51 contacts → | ||||
Indirect evidence “Quantum Space is developing Ranger-a maneuver-first, mission-configurable spacecraft designed to support and meet the demands of modern space operations.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
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: on-orbit servicing 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 on-orbit servicing companies.
- Partial evidence
- Its own public description names part of on-orbit servicing companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name on-orbit servicing 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 206 on-orbit servicing companies worldwide
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On-orbit servicing companies worldwide at a glance
As of Sep 20, 2026Companies by employee count
Email recency is reported on each country list linked below.
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 on-orbit servicing 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.
- Coverage
- Every country. Country and city lists for on-orbit servicing companies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “on-orbit servicing 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 on-orbit servicing 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 on-orbit servicing companies, and records with no verified work email.
- 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, 3,345 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 20, 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.
On-orbit servicing companies by location
1 lists · largest firstEvery On-orbit servicing companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
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 on-orbit servicing 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 on-orbit servicing companies are there worldwide?
RevenueBase identified 206 on-orbit servicing companies worldwide 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?
Telespazio, headquartered in Rome, tops this list with the largest team on record.
Which country has the most on-orbit servicing companies?
The United States leads with 81 companies. Every on-orbit servicing companies list by country and city is linked on this page.
Which city has the most on-orbit servicing companies?
Houston leads with 5 headquartered companies, followed by Denver (4) and London (4).
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 3,345 verified decision-maker contacts tracked across these 206 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 20, 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.