It has been brought to the attention of the LNPA WG that Service Providers are finding instances where an LRN has been entered on a Ported or Pooled telephone number in the NPAC, but the LRN on that record is not shown in the LERG. This situation is not causing call completion issues, but may cause additional time and work in Trouble resolution and identifying Carrier ownership of the LRN.

 The Industry Numbering Committee (INC) has established the "LRN Assignment Practices" to advise Service Providers on how to establish LRN’s and notify the industry of their LRNs. The way the Service Providers notify the industry is detailed in the INC Assignment Practices, and it states, "The LRN will be published in the LERG."

 The LNPA WG agrees with the INC guidelines and recommends all Service Providers, to the extent possible based on current Business Integrated Routing and Rating Database Systems (BIRRDS) edits, follow these practices and insure all their LRNs are published in the LERG.

 The INC "LRN Assignment Practices" are located on the following website.

http://www.atis.org/inc/docs.asp

 Two examples where LRNs missing in the LERG may cause problems:

 1) When the LRN information in the LERG is used to identify the carrier to which to send Access Billing records, without the LRN being populated in the LERG, the records fall out of automated system processing and require manual handling to determine the carrier.

 2) Even though the NPA-NXX is shown in the LERG and open in the network so the call should complete, if a trouble is experienced and a Trouble Ticket is opened, not having the LERG entry correct may lead to increased confusion and more investigation time during the resolution process to determine to whom the LRN belongs.