Hi Marco and WG, I am mostly neutral on this proposal, seems like a reasonable thing to do but doubt it changes the situation that much. However I do have some concerns, primarily around the classification of entities and numbers. This change makes it even more important that the NCC correctly classifies entities and their associated registration numbers. I have seen how the NCC has struggled with this, especially in cases that differ depending on jurisdiction. As an example: in Sweden, partnerships (Handelsbolag) and limited partnerships (Kommanditbolag) are both legal entities, separate from the people or entities behind them. Despite this, I have seen Swedish entities being registered as "John Doe trading as Acme Networking Kommanditbolag" despite that being a legal entity with an organisation number. Meanwhile sole proprietorships in Sweden aren't legal entities so instead they are registered with the person's ID number. On top of this, Swedish personal ID numbers and organisation numbers have the same format. For these reasons I don't currently trust that the NCC would publish the number for the partnership but not for the sole proprietor. I assume there are more cases like this in other countries, so I would like the NCC to look through their data and make sure that they have correctly classified entities before they publish their numbers. If there is a list at the NCC with which kinds of organisations are considered legal entities (and possibly which registry registers them) in different countries then I think it would be good if that could be published. My other concern was with organisations having multiple different identification numbers and making sure to publish the correct one. For example: in the US, most (all?) companies have an EIN with the IRS for federal taxes, this number is distinct to the actual company registration number that they might have at the state level which is the one that should actually be published. This case is possibly rather obvious but I wouldn't be surprised if there are more cases like this in other jurisdictions that are not as obvious and that the NCC hasn't caught yet. Here I would also like to see a list with which numbers are used for which kinds of entities if there is such a list (and if not then I think that there probably should be such a list). -Cynthia On Mon, Nov 17, 2025 at 12:01 PM Marco Schmidt <mschmidt@ripe.net> wrote:
Dear colleagues,
Following my presentation at the RIPE 91 Address Policy Working Group session, I’d like to propose adding a company registration number to the organisation object type.
Problem Statement: The RIPE Database should allow users to uniquely identify Internet Number Resource holders. Today, organisation objects linked to RIPE NCC co-maintained inetnum, inet6num, and aut-num objects include the validated legal organisation name and country code where the resource holder is legally registered. However, these attributes alone are not always sufficient to uniquely identify a legal entity, for three main reasons:
1. Identical names: In some jurisdictions, different companies can legally register with the same or very similar names. 2. Transliteration issues: In countries using non-Latin scripts, converting names from and into Latin characters can produce inconsistent or inaccurate results. 3. Data discrepancies: Differences between the validated legal information (org-name and country) and the contact details maintained by the resource holder (for example, a postal address in another country) can create confusion and make identification more difficult.
Solution Definition: Introduce a new reg-nr: attribute for RIPE NCC co-maintained organisation objects, containing verified company registration numbers issued by national authorities. The RIPE NCC already holds this information for ~99% of resource holders that are legal entities.
Publishing a unique and verifiable registration number will significantly improve the ability of RIPE Database users to accurately identify resource holders and cross-check them in national company registries.
Only publicly available registration numbers of legal entities will be published. Natural persons remain explicitly out of scope.
Please let me know your feedback. Questions and comments are welcome.
Regards Marco Schmidt Manager Registration Services RIPE NCC
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