SIRO is an Irish telecommunications company and wholesale broadband operator, established in 2015 as a joint venture between ESB and Vodafone Group Plc. The company focuses on providing 100% fibre-to-the-building (FTTB) broadband, utilizing ESB's electrical infrastructure to create a sustainable, gigabit-speed network.
| Founded | 2015 (11 years) |
| Latest funding | Debt Financing |
| Employees | 180 |
| Headquarters | Dublin, Ireland |
| Trusted networks on Proven | 2 investor, bank and government networks offer SIRO to their members |
Company facts from Apollo.io company data. Network, offer and redemption data from the Proven platform. A Proven Score is published once publicly named clients are verified with sources.
Source: Proven platform data, public records and vendor websites. Vendors cannot pay to change a score. Methodology. Updated 2026-10-21.