NANC Report Numbering Oversight Working Group (NOWG) March 24, 2016 Co-Chairs: Laura Dalton, Verizon Karen Riepenkroger, Sprint 03/24/20161

Contents 2015 Performance Surveys NANPA and PA Performance Evaluation Process NANPA and PA Change Orders NANC Action Items on Nationwide Number Portability Meeting Schedule NOWG Participating Companies 203/24/2016

Performance Surveys Industry Surveys: –Surveys deployed: January 4, 2016 –Responses due: February 15, 2016 NANPA Surveys Completed: 68  52 Industry and Other Respondents  16 Regulator Respondents PA Surveys Completed: 79  44 Industry and Other Respondents  35 Regulator Respondents RNA Surveys Completed: 14  12 Industry and Other Respondents  2 Regulator Respondent 03/24/2016

NANPA and PA Performance Evaluation Process Timeline of Activities (February – June 2016):  NOWG Analysis of Survey Results  Operational Reviews with NANPA and PA  Preparation of Draft Performance Report Sections  Compilation and Review of Performance Report Drafts  NOWG Presentation of Preliminary Performance Reports to the FCC, NANPA, and PA – June 7  NOWG Presentation of Performance Reports to the NANC – June 30 03/24/20164

NANPA Change Orders Change Order Number Date FiledSummaryNOWG StatusFCC Action Scheduled Implementation Date 2 05/22/2015INC Issue 794: Update 555 NXX Assignment Guidelines to Reflect a Moratorium on New Assignments NOWG Recommendation to Approve sent to FCC on 05/29/2015 Approved on 06/17/2015 NOWG continues to monitor NANPA’s activities with the 555 NXX Resource 3 09/22/2015NANP Administration System (NAS) NRUF Updates NOWG Recommendation to Approve sent to FCC on 09/28/2015 PendingTentative – 2 nd Half /03/2016INC Issue 497: Identify Changes to INC Guidelines Based on NANC’s Report and Recommendation, VoIP Service Providers’ Access Requirements for NANP Resource Assignments (July 19, 2005), and FCC Order (June 22, 2015) and INC Issue 797: Updates to the INC Guidelines Forms NOWG Recommendation to Approve sent to FCC on 01/11/2016 Approved on 02/11/ nd QTR /24/2016

PA Change Orders Change Order Number Date FiledSummaryNOWG StatusFCC Action Scheduled Implementation Date 1 11/10/2015Move RNAS and PAS into the Cloud NOWG Recommendation to Approve sent to FCC on 11/18/2015 Approved on 12/04/2015 RNAS Implementation – February 2016 PAS Implementation – May 2016 (Estimate) 2 12/29/2015Changes to INC forms based on INC Issue # 497: VoIP Service Providers’ Access Requirements for NANP Resource Assignments and INC Issue # 797: Updates to the INC Guideline Forms NOWG Recommendation to Approve sent to FCC on 01/11/2016 Approved on 01/28/2016 2nd QTR /07/2016 Addressing the iconectiv proposals for connection to the PAS NOWG Recommendation Pending PendingTBD 603/24/2016

NANC Action Items on Nationwide Number Portability (NNP) 703/24/2016 Two NNP issues were referred to the NOWG: Issue #1 – Potential impacts to the life of the North American Numbering Plan (NANP) Issue #2 – Numbering Resource Utilization and Forecasting (NRUF) form impacts The NOWG requested input from the NANPA and ATIS INC based upon their subject matter expertise. The ATIS INC reviewed the NANPA’s input that had been provided to the NOWG and responded that they agreed with the NANPA’s assumptions and input related to both issues.

NANC Action Items on Nationwide Number Portability (NNP) 803/24/2016 The NOWG considered the feedback received from the NANPA and ATIS INC and concluded the following: Issue #1 – Potential Impacts to the life of the NANP: Assuming there are no changes to the assignment process for central office codes and thousands-blocks, the implementation of NNP is unlikely to have a significant positive or negative impact to the life of the NANP. However, if a new technical routing solution is developed that requires service providers to establish additional LRNs, then assignment of additional central office codes to facilitate those additional LRN needs could negatively impact the lives of particular NPAs and the overall life of the NANP.

NANC Action Items on Nationwide Number Portability (NNP) 903/24/2016 Issue #2 – NRUF Form 502 Impacts: Assuming there are no changes to the assignment process for central office codes and thousands-blocks, and ported out numbers would continue to be reported as “Assigned” by the block holder or code holder on the NRUF Form 502, the implementation of NNP would have no impact on the NRUF Form 502. The NOWG’s final report in response to the NANC action items on NNP was provided to the NANC members on March 3, NANPA’s input is attached to the NOWG’s report as Exhibit 1.

NOWG Upcoming Meeting Schedule – 2016 MonthActivity April 15PA Standing Agenda Call with NOWG - Conference Call 3 pm Eastern, 1 hr April 15NANPA Standing Agenda Call with NOWG - Conference Call 4 pm Eastern, 1 hr * April 20-21PA Operational Review – Concord, California May 24PA Standing Agenda Call with NOWG - Conference Call 1 pm Eastern, 1 hr May 24NANPA Standing Agenda Call with NOWG - Conference Call 2 pm Eastern, 1 hr * June 21PA Standing Agenda Call with NOWG - Conference Call 1 pm Eastern, 1 hr June 21NANPA Standing Agenda Call with NOWG - Conference Call 2 pm Eastern, 1 hr * * NOWG-Only Monthly Call following Calls with the NANPA and PA 1003/24/2016

NOWG Meetings Other meetings for the NOWG may be scheduled as needed beyond what has been identified in this list. Contact the NOWG Co-Chairs for complete meeting or conference call details: NOWG meeting notes and documents are posted at 03/24/201611

NOWG Participating Companies AT&T CenturyLink Charter Communications Cox Communications Indiana Utility Regulatory Commission Pennsylvania Public Utilities Commission Sprint T-Mobile USA Verizon Communications / Verizon Wireless XO Communications 03/24/201612