1. NANC Report Numbering Oversight Working Group (NOWG) March 9, 2011 Tri-Chairs: Laura Dalton, Verizon Communications Natalie McNamer, T-Mobile USA Gwen Zahn, Verizon Wireless

2. Contents 2010 NANPA and PA Performance Surveys Schedule of Performance Evaluation Process PA Change Orders p-ANI Change Order NANPA Change Orders Administrators’ Annual Reports NOWG Participating Companies Meeting Schedule 2

3. 2010 NANPA and PA Performance Surveys The NOWG implemented the use of an online survey tool for the first time. Surveys submitted by e-mail in Word documents were also accepted. Survey response period was January 3, 2011 until February 15, 2011. Two reminder notices were sent by each of the Administrators. 3

4. 2010 NANPA and PA Performance Surveys Preliminary count of surveys received: –NANPA: 27 Regulatory Entities 46 Service Providers and Other Entities –PA: 28 Regulatory Entities 83 Service Providers and Other Entities Totals are preliminary due to consolidation of responses to meet the one survey per entity requirement. 4

5. NANPA and PA 2010 Performance Evaluation Process DateActivity February – May, 2011 NOWG Consolidation and Review of NANPA and PA Survey Data, and Preparation of the Performance Evaluation Reports March 16 – 17, 2011PA Operational Review in Concord, CA April 5 - 6, 2011NANPA Operational Review in Sterling, VA May, 2011 NOWG Shares Preliminary Results with the FCC, the NANPA and the PA in Washington, DC May, 2011NOWG Presents Final Performance Reports on NANPA and PA at NANC Meeting The following table provides the timeline of NOWG activities for completing the NANPA and PA annual performance reports. 5

6. PA Change Orders Change Order Number Date FiledSummaryNOWG StatusFCC ActionScheduled Implementation Date 202/18/2011Proposed Enhancements to PAS NOWG recommendation to APPROVE to FCC on 03/04/11 191/27/2011Permanent Routing Number Administrator (p-ANI) NOWG recommendation to APPROVE to FCC on 02/25/11 1811/09/2010Clarify the Definition of “In Service” in the Guidelines No action required by the NOWG FCC Approved 12/28/2010 Implemented 2/11/2011 1710/13/2010Additional Block Report for All NOWG recommendation to APPROVE to FCC on 10/21/2010 FCC approved 10/21/2010 Implemented 12/10/2010 165/11/2010Proposed Enhancements to PAS NOWG recommendation to APPROVE to FCC FCC Approved 6/22/2010 Implemented 2/11/2011 6

7. p-ANI Change Order PA Change Order # 19 for the Permanent Routing Number Administrator - greater in scope than other change orders. Required additional NOWG consideration. – Reviewed Change Order against INC Guidelines. – Reviewed internally by member companies. – Additional NOWG meetings held to develop clarifying questions for the PA and review responses. 7

8. NANPA Change Orders Change Order Number Date FiledSummaryNOWG StatusFCC ActionScheduled Implementation Date 2011/09/2010Clarify the Definition of “In Service” in the Guidelines (INC Issue 696) No action required by the NOWG FCC approved 12/28/2010 Implemented on 2/11/2011 8

9. Administrators’ Annual Reports The NANPA and PA provided their respective 2010 Annual Reports to the NOWG for review prior to publication. Individual NOWG members’ comments, questions, and suggestions were provided to the NANPA and PA. 9

10. NOWG Participating Companies AT&T Centurylink Cox Communications One Communications Qwest Communications Sprint Nextel T-Mobile USA Verizon Communications / Verizon Wireless Windstream Communications XO Communications 10

11. NOWG Upcoming Meeting Schedule - 2011 MonthActivity March 25PA Standing Agenda Call with NOWG - Conference Call 12 pm Eastern, 1 hr March 25NANPA Standing Agenda Call with NOWG - Conference Call 1 pm Eastern, 1 hr * April 19PA Standing Agenda Call with NOWG - Conference Call 1 pm Eastern, 1 hr April 19NANPA Standing Agenda Call with NOWG - Conference Call 2 pm Eastern, 1 hr * May 17PA Standing Agenda Call with NOWG - Conference Call 1 pm Eastern, 1 hr May 17NANPA Standing Agenda Call with NOWG - Conference Call 2 pm Eastern, 1 hr * * NOWG-Only Monthly Call following Calls with the Administrators 11

12. NOWG Meeting Schedule Contact any of the Tri-Chairs for complete meeting or conference call details: Laura.R.Dalton@Verizon.com Natalie.McNamer@T-Mobile.com Lauren.Zahn@VerizonWireless.com.com Other meetings for the NOWG may be scheduled as needed beyond what has been identified in this list. NOWG meeting notes and documents are posted at www.nanc-chair.orgwww.nanc-chair.org 12