NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.

Most active assignees, all time — NPA 412
VERIZON PENNSYLVANIA, INC. 249
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 86
NEW CINGULAR WIRELESS PCS, LLC - IL 60
MCIMETRO ACCESS TRANSMISSION SERVICES LLC 57
AERIAL COMMUNICATIONS, INC. 49
New assignments by month Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025 Oct 2025
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2020-05-13 412-899 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - PA 547E PTTSBGZON3 PA
2020-05-13 412-910 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - PA 547E PTTSBGZON2 PA
2020-05-13 412-990 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - PA 547E PTGSBNZN21 PA
2019-12-24 412-912 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - PA 547E PTTSBGZON1 PA
2019-05-20 412-643 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - PA 547E PTTSBGZON1 PA
2019-05-17 412-541 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F PTGSBNZN18 PA
2019-05-01 412-547 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F CLAIRTON PA
2019-03-28 412-743 0–9 XXXwhole prefix which blocks → ONVOY, LLC - PA 547E CLAIRTON PA
2019-03-25 412-844 0–9 XXXall 10 · 4 holders which blocks → HD CARRIER LLC 321J PTTSBGZON8 PA
2019-03-01 412-815 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F PTTSBGZON1 PA
2019-02-14 412-891 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F PTGSBNZN20 PA
2019-01-22 412-707 0–9 XXXall 10 · 5 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 PTTSBGZON2 PA
2018-11-21 412-634 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 3 holders which blocks → VERIZON PENNSYLVANIA, INC. 9208 ELIZABETH PA
2018-11-16 412-516 0–9 XXXall 10 · 5 holders which blocks → AIRESPRING, INC. 996H PTGSBNZN22 PA
2018-10-29 412-775 0–9 XXXall 10 · 5 holders which blocks → FULL SERVICE NETWORK LP 7820 PTTSBGZON3 PA
2018-08-14 412-615 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 PTGSBNZN14 PA
2018-06-20 412-550 0–9 XXXall 10 · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H PTTSBGZON1 PA
2018-06-06 412-842 0–9 XXXwhole prefix which blocks → CORE COMMUNICATIONS, INC. - PA 3806 PTTSBGZON1 PA
2018-02-27 412-935 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PTTSBGZON1 PA
2018-01-11 412-598 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PTTSBGZON1 PA
2017-10-24 412-909 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 PTTSBGZON1 PA
2017-09-12 412-785 0–9 XXXall 10 · 5 holders which blocks → VONAGE AMERICA LLC 197D PTTSBGZON1 PA
2017-07-07 412-883 0–9 XXXall 10 · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 PTGSBNZN14 PA
2017-06-05 412-588 0–9 XXXall 10 · 4 holders which blocks → TELNYX LLC 073H PTTSBGZON1 PA
2017-05-05 412-483 0XXX1XXX · 2 holders which blocks → TELNYX LLC 073H PTGSBNZN10 PA
2017-03-09 412-510 0–9 XXXall 10 · 2 holders which blocks → XO COMMUNICATIONS SERVICES, INC. - PA 7341 PTTSBGZON1 PA
2016-10-11 412-676 0–9 XXXall 10 · 3 holders which blocks → PAETEC ITEL, LLC 829J PTTSBGZON1 PA
2016-10-05 412-710 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → THE VOICE APPLICATION NETWORK, LLC 507J PTGSBNZN11 PA
2016-07-15 412-699 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PTTSBGZON1 PA
2016-05-26 412-933 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 PTTSBGZON1 PA
2016-03-16 412-274 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - PA 547E CLAIRTON PA
2016-02-17 412-514 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PTTSBGZON1 PA
2016-02-10 412-410 0–9 XXXall 10 · 4 holders which blocks → BARR TELL USA, INC. - PA 752H PTTSBGZON1 PA
2016-01-20 412-214 0–9 XXXall 10 · 8 holders which blocks → WIDE VOICE, LLC - PA 218H PTTSBGZON8 PA
2015-10-08 412-857 0–9 XXXall 10 · 6 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 PTGSBNZN14 PA
2015-09-15 412-509 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PTTSBGZON1 PA
2015-05-07 412-618 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - PA 547E PTTSBGZON1 PA
2015-03-25 412-900 0–9 XXXwhole prefix which blocks → ONVOY, LLC - PA 547E PTGSBNZN14 PA
2015-03-23 412-500 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - PA 547E PTTSBGZON1 PA
2015-01-28 412-413 0–9 XXXall 10 · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PTGSBNZN14 PA
2014-08-25 412-495 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PTTSBGZON1 PA
2014-08-22 412-652 0–9 XXXall 10 · 4 holders which blocks → AIRUS, INC. - PA 438H PTTSBGZON1 PA
2014-05-14 412-930 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PTTSBGZON1 PA
2013-11-26 412-218 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 PTGSBNZN14 PA
2012-11-12 412-660 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PTTSBGZON1 PA
2012-10-22 412-694 0–9 XXXall 10 · 5 holders which blocks → NUSO, LLC 551G PTTSBGZON1 PA
2012-10-12 412-529 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PTTSBGZON1 PA
2012-10-12 412-738 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PTTSBGZON1 PA
2012-10-09 412-713 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PTTSBGZON1 PA
2012-09-25 412-525 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PTTSBGZON1 PA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.