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
2026-08-24 302-718 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MILFORD DE
2026-07-22 302-431 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DE 6393 WILMINGTON DE
2026-05-13 302-717 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MIDDLETOWN DE
2026-05-05 302-713 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEW CASTLE DE
2026-03-11 302-712 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MILFORD DE
2026-02-24 302-710 0XXX1XXX4XXX5XXX6XXX · 3 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 DOVER DE
2026-02-03 302-708 0XXX1XXX2XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DE 6393 GEORGETOWN DE
2026-01-26 302-707 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DE 6393 WILMINGTON DE
2026-01-05 302-716 0XXX which blocks → BANDWIDTH.COM CLEC, LLC - DE 073F NEWARK DE
2025-10-31 302-714 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MILFORD DE
2025-09-04 302-706 2XXX which blocks → BOOST SUBSCRIBERCO L.L.C. 490J LAUREL DE
2025-08-26 302-705 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 MILFORD DE
2025-08-20 302-704 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WILMINGTON DE
2025-07-08 302-694 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 2 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 NEWARK DE
2025-06-27 302-693 9XXX which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 DELMAR DE
2025-06-26 302-692 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MILFORD DE
2025-06-26 302-699 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MILFORD DE
2025-06-24 302-687 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 DOVER DE
2025-06-16 302-686 0XXX1XXX7XXX9XXX · 2 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 SELBYVILLE DE
2025-05-19 302-681 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 GEORGETOWN DE
2025-05-15 302-680 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MILFORD DE
2025-04-16 302-679 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - DE 969E WILMINGTON DE
2025-03-12 302-719 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 DOVER DE
2025-03-05 302-675 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MILFORD DE
2024-12-11 302-673 0–9 XXXall 10 · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MILFORD DE
2024-12-02 302-671 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MILFORD DE
2024-08-29 302-649 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MILFORD DE
2024-06-26 302-646 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MILFORD DE
2024-06-21 302-810 0XXX1XXX2XXX which blocks → ONVOY, LLC - DE 969E LEWES DE
2024-06-18 302-642 0XXX1XXX which blocks → ONVOY, LLC - DE 969E OCEAN VIEW DE
2024-05-10 302-641 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MILFORD DE
2024-03-27 302-640 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → ONVOY, LLC - DE 969E GEORGETOWN DE
2024-03-25 302-534 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → ONVOY, LLC - DE 969E MIDDLETOWN DE
2024-03-11 302-638 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MILFORD DE
2024-02-29 302-630 0XXX1XXX2XXX · 2 holders which blocks → ONVOY, LLC - DE 969E SEAFORD DE
2024-02-29 302-637 0XXX1XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - DE 969E DELAWARECY DE
2024-02-08 302-237 0–9 XXXall 10 · 4 holders which blocks → COMMIO, LLC 939H DOVER DE
2024-02-05 302-625 0XXX1XXX7XXX · 2 holders which blocks → ONVOY, LLC - DE 969E MILTON DE
2024-02-05 302-626 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - DE 969E HOCKESSIN DE
2024-02-05 302-627 0XXX1XXX2XXX3XXX7XXX8XXX · 3 holders which blocks → ONVOY, LLC - DE 969E SMYRNA DE
2024-01-26 302-621 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - DE 969E NEWARK DE
2023-10-11 302-619 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MILFORD DE
2023-10-11 302-620 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 NEW CASTLE DE
2023-09-29 302-617 0–9 XXXall 10 · 3 holders which blocks → HD CARRIER LLC 321J WILMINGTON DE
2023-09-20 302-610 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 NEWARK DE
2023-09-01 302-506 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - DE 969E HOLLY OAK DE
2023-08-29 302-484 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DE 6393 CAMDEN DE
2023-08-14 302-443 0XXX2XXX3XXX4XXX5XXX7XXX9XXX · 3 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 CAMDEN DE
2023-08-03 302-410 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 REHOBOTH DE
2022-11-15 302-271 0–9 XXXall 10 · 4 holders which blocks → NUSO, LLC 732J GEORGETOWN 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.