Code Holder Responsibilities

As a reminder, per section 4.1 of the Thousands-Block Number (NXX-X) Pooling
Administration Guidelines:

4.1 Code Holder Responsibilities

A Central Office (CO) Code Holder is an assignee of a full NXX code. CO Code Holders can either be thousands-block pool participants or not. CO Code Holders who are thousands-block pool participants shall:

identify eligible thousands-blocks for donation to the industry inventory pool upon initial establishment of the industry inventory pool pursuant to Section 7.2.5; make required updates to BIRRDS with the switch information as appropriate (i.e., ongoing switching entity/POI changes) after creation of the Block Code record (BCD), for their assigned thousands-blocks within pooled NXX codes (See Section 8.5.2) and; submit changes or disconnects for pooled NXXs to the PA. Changes or disconnects for non-pooled NXXs in a pooling rate area should be sent to NANPA. confirm, prior to donating the thousands-block to the industry inventory pool, that: all unavailable TNs within contaminated thousands-blocks have been intra-service provider ported; the associated NPA/NXX is currently available for call routing, is flagged as LNP capable in the LERG Routing Guide and the NPAC, and the NPA-NXX query triggers are applied in all switches and reflected in the appropriate network databases (e.g., STP routing tables); the NXX-assigned switch is currently LNP-capable and will process terminating traffic appropriately; and interconnection facilities have been established between the NXX-assigned switch and other interconnecting networks. become a LERG Assignee at the Block Donation Date (see Section 7.1).