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The National Directory Database (NDD) is managed by eir on behalf of ComReg as part of our Universal Service Obligation (USO). As part of this obligation eir manages the collection of customer listings, including Telemarketing preference, from all Authorised Operators (AO) assigning telephone numbers to subscribers.


open eir is a trading name of eircom Limited, Registered as a Branch in Ireland Number 907674, Incorporated in Jersey Number 116389. Branch Address: eircom Limited, 2022 Bianconi Avenue, Citywest Business Campus, Dublin 24 D24 HX03. © 2019 eir. All rights reserved.