Look up any E-C-O™ Number to see verified sustainability credentials — free, public, and current.
Hover over each part. The structure is fixed, public, and simple enough to validate offline — no account, no API call.
Marks the identifier as an E-C-O Number — never reused for any other scheme.
The issuing series. Series 196 is the founding series; new series open as the registry grows.
A neutral sequence assigned at issuance. It encodes nothing about the entity — no country, size or sector — so the number never becomes outdated.
ISO 7064 MOD 97-10 over the twelve digits. Any system can catch a typo or forgery in one calculation.
An E-C-O Number is issued to a legal entity exactly once — and stays with it through renames, relocations and reorganisations.
The entity — or a platform acting on its behalf — submits its legal identity: name, registration number, jurisdiction and authorised contact.
Identity is confirmed against official business registers through independent know-your-business verification before anything is issued.
The number enters the public registry. Re-verification keeps the record current — the number itself never changes and is never reassigned.
A legal entity holds exactly one E-C-O Number. Duplicates are merged, never issued.
Numbers are never recycled or reassigned — even if an entity is dissolved, its record is preserved.
The number belongs to the entity, not to any platform. It moves wherever the entity's data goes.
Looking up a number and validating its check digits is free for everyone, forever.
ESG platforms, procurement systems and registries use the E-C-O Number as a common key, so a supplier verified once is recognised everywhere.
No — it complements them. LEI identifies entities for financial transactions; DUNS is a commercial identifier. The E-C-O Number anchors an entity's ESG record: its verified sustainability data, wherever that data lives. Records can cross-reference an entity's LEI where one exists.
Only identity and status: legal name, jurisdiction, verification status and dates. An entity's actual ESG data is never published here — it stays on the platforms the entity chooses, shared on its own terms. The number is the key, not the vault.
The number stays. Renames update the record; mergers follow published succession rules with the full history preserved. Continuity is the point — an ESG track record should survive corporate events.
The registry is operated under a published charter with independent verification partners, and its validation scheme is open. Any platform — not only the registry's operators — can build on it.
Registration takes minutes. Verification is independent. The number is yours for good.