NRNumberResearch Membership · Data 09/17/2026

Relief Tracker

43 recorded events · compiled from NANPA planning letters 1997–present

Each event page consolidates every letter issued for that decision — initial announcements, revisions and rescissions — with links to the primary documents.

All Overlay (152) Other (43) Jeopardy (26) New npa (20) Split (4)
AnnouncedEventTypeArea codesRegion
2026-05-26 Assigning from NPA 542 for Non-Geographic Services other 542 —
2025-10-28 Assigning from NPA 538 for Non-Geographic Services other 538 —
2024-11-06 NPA 729 to Overlay 423 (Tennessee) – supersedes PL-619 other 729 TN
2024-11-04 Assigning from NPA 532 for Non-Geographic Services  other 532 —
2023-01-26 710 Numbering Plan Area (NPA) for the U.S. Government other — AR
2022-09-16 Assigning from NPA 529 for Non-Geographic Services other 529 —
2022-03-02 Assigning from NPA 528 for Non-Geographic Services other 528 —
2021-12-30 NPA 480, 602 and 623 Boundary Elimination Overlay (Arizona) other 480 AZ
2021-11-17 NPA 343/613 (eastern Ontario) – amending PL-571 other 343 —
2021-09-29 Assigning from NPA 527 for Non-Geographic Services other 527 —
2021-01-28 Assigning from NPA 526 for Non-Geographic Services other 526 —
2020-12-04 NPA 656 to Overlay 813 (Florida) supersedes PL541 other 656 FL
2020-12-04 NPA 448 to Overlay 850  (Florida) supersedes PL534 other 448 FL
2020-10-22 NPA 202 and 771 All-Services Ovelray (District of Columbia) other 202 DC
2020-08-18 NPA 540 and 826 All-Services Overlay (Virginia) other 540 VA
2020-07-14 NPA 582 to Overlay 814  (Pennsylvania) supersedes PL540 other 582 PA
2020-07-13 Assigning from NPA 525 for Non-Geographic Services other 525 —
2020-04-08 NPA 945 to Overlay 214/469/972 (Texas) other 945 TX
2020-04-06 NPA 948 to Overlay 757 (Virginia) other 948 VA
2019-12-04 NPA 354 to Overlay 450/579 (Area served by Montreal, Quebec, Canada)- revision other 354 —
2019-07-23 NPA 840 to Overlay 909 (California) other 840 CA
2019-07-12 Assigning from NPA 524 for Non-Geographic Services other 524 —
2018-09-13 NPA 689 to Overlay 407 and 321 NPAs (Florida) other 689 FL
2018-07-30 NPA 341 to Overlay 510 (California) other 341 CA
2017-05-18 NPA 619 and 858 Boundary Elimination Overlay (California) other 619 CA
2016-08-09 NPA 213 and 323 Boundary Elimination Overlay (California) other 213 CA
2015-04-15 Implementation of the NPA 833 for Toll-Free Services other 833 —
2012-12-07 Implementation of the NPA 844 for Toll-Free Services other 844 —
2012-02-09 Introduction on NPA 721 (Sint Maarten) other 721 —
2011-06-21 NPA 415, 619, 650, 707 - Relief Plans Dismissed (California) other 415 CA
2010-11-22 NPA 510 (California) - Relief Plan Dismissed other 510 CA
2010-10-01 Implementation of the NPA 855 for Toll Free Services other 855 —
2010-06-25 NPA 873 to Overlay NPA Code 819 (Western Québec, Canada) other 873 —
2007-06-22 Relief for British Columbia 250 Area Code and NPA 778 Boundary Change other 778 —
2006-05-16 NPA 613 & NPA 819 Relief Phase One (Dial Plan Change) other 613 —
2003-03-24 Introduction of NPA 684 (American Samoa) other 684 —
2001-06-29 Mandatory Dialing Date Established for NPA 283 (Ohio) other 283 OH
2001-04-24 NPA 513 Boundary Realignment Franklin Rate Center (Ohio) other 513 OH
2001-01-26 Delayed 10-Digit Dialing in NPA 787 (Puerto Rico) other 787 PR
2001-01-23 Revised Mandatory Dialing Date for NPA 704 (North Carolina) other 704 NC
2000-07-17 New Test Number for NPA 478 (Georgia) other 478 GA
1999-02-23 No Mandatory date set for 1 +10 digit dialing in Chicago NPA 847/224 Overlay; update to PL-127 other 847 —
1998-03-02 NPA 876 Conversion Extension for Jamaican NPA Relief other 876 —

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