NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

1 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, last 30 days — NPA 302
NEW CINGULAR WIRELESS PCS, LLC - DC 1
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
2022-10-06 302-267 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 WILMINGTON DE
2022-09-26 302-302 0–9 XXXwhole prefix which blocks → ONVOY, LLC - DE 969E DELAWARECY DE
2022-09-07 302-215 0–9 XXXall 10 · 4 holders which blocks → COMCAST IP PHONE, LLC 318J HOCKESSIN DE
2022-09-01 302-201 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 4 holders which blocks → COMCAST IP PHONE, LLC 318J FREDERICA DE
2022-08-05 302-618 0–9 XXXall 10 · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 NEW CASTLE DE
2022-07-08 302-614 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DE 6393 GEORGETOWN DE
2022-07-08 302-615 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - DE 073F HOLLY OAK DE
2022-06-29 302-412 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - DE 073F LEWES DE
2022-04-13 302-609 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEW CASTLE DE
2022-03-01 302-726 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J ANGOLA DE
2022-03-01 302-742 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → TON80 COMMUNICATIONS, LLC 516J DELAWARECY DE
2022-02-25 302-596 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - DE 4801 WILMINGTON DE
2022-01-25 302-591 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 GEORGETOWN DE
2021-12-28 302-589 0–9 XXXall 10 · 6 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J LAUREL DE
2021-12-10 302-590 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J DOVER DE
2021-11-04 302-587 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - DE 073F HARRINGTON DE
2021-10-27 302-586 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - DE 073F MILFORD DE
2021-10-04 302-582 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 WILMINGTON DE
2021-09-10 302-580 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 DOVER DE
2021-08-10 302-579 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 GEORGETOWN DE
2021-05-28 302-802 0–9 XXXall 10 · 6 holders which blocks → ONVOY SPECTRUM, LLC 624H SMYRNA DE
2021-05-25 302-599 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H HOCKESSIN DE
2021-05-25 302-662 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H SELBYVILLE DE
2021-05-07 302-568 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEW CASTLE DE
2021-04-19 302-560 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H BRIDGEVL DE
2021-04-19 302-592 0–9 XXXall 10 · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H CAMDEN DE
2021-04-19 302-606 0XXX1XXX2XXX3XXX6XXX7XXX · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H FELTON DE
2021-04-19 302-701 2XXX3XXX4XXX5XXX7XXX · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H HARTLY DE
2021-02-03 302-558 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - DE 969E SEAFORD DE
2020-12-21 302-557 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - DE 969E OCEAN VIEW DE
2020-12-21 302-665 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - DE 969E FREDERICA DE
2020-12-21 302-667 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - DE 969E REHOBOTH DE
2020-12-21 302-676 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - DE 969E MIDDLETOWN DE
2020-12-21 302-878 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → ONVOY, LLC - DE 969E MILLSBORO DE
2020-12-21 302-889 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - DE 969E DAGSBORO DE
2020-09-21 302-556 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - DE 969E DELMAR DE
2020-09-18 302-554 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DE 6393 CAMDEN DE
2020-09-03 302-844 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → FRACTEL, LLC 965H SMYRNA DE
2020-09-01 302-551 0–9 XXXall 10 · 6 holders which blocks → NUSO, LLC 478J WILMINGTON DE
2020-07-29 302-688 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H WILMINGTON DE
2020-07-29 302-866 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H MILFORD DE
2020-07-29 302-899 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H CAMDEN DE
2020-07-17 302-946 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H DELAWARECY DE
2020-07-16 302-991 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - DE 969E NEW CASTLE DE
2020-02-07 302-277 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEW CASTLE DE
2019-11-01 302-548 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 GEORGETOWN DE
2019-11-01 302-553 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 WILMINGTON DE
2019-10-25 302-546 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 DOVER DE
2019-10-10 302-550 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - DE 969E LEWES DE
2019-10-10 302-770 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - DE 969E MILTON DE

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.