NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

355 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

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
8X8, INC. 38
ONVOY, LLC - CA 31
NEW CINGULAR WIRELESS PCS, LLC - IL 28
NEW CINGULAR WIRELESS PCS, LLC - DC 26
ONVOY, LLC - NJ 18
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
2002-09-19 626-905 7XXX which blocks → T-MOBILE USA, INC. 6529 AZUSA CA
2002-09-19 626-922 not yet reported which blocks → T-MOBILE USA, INC. 6529 COVINA CA
2002-09-19 631-816 2XXX which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 YAPHANK NY
2002-09-19 631-965 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 RIVERHEAD NY
2002-09-19 650-305 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → T-MOBILE USA, INC. 6529 LOS ALTOS CA
2002-09-19 650-440 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → T-MOBILE USA, INC. 6529 HALFMOONBY CA
2002-09-19 650-861 3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → T-MOBILE USA, INC. 6529 MT VIEW CA
2002-09-19 707-771 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → T-MOBILE USA, INC. 6529 BENICIA CA
2002-09-19 714-717 not yet reported which blocks → T-MOBILE USA, INC. 6529 HUNTITNBCH CA
2002-09-19 734-709 0–9 XXXwhole prefix which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ANN ARBOR MI
2002-09-19 760-680 2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 VTVL HSPR CA
2002-09-19 760-701 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → T-MOBILE USA, INC. 6529 EL MIRAGE CA
2002-09-19 850-844 1XXX3XXX4XXX5XXX6XXX8XXX9XXX · 2 holders which blocks → CENTURYLINK OF FLORIDA, INC. (CENTRAL) 0340 BONIFAY FL
2002-09-19 850-845 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - FL 4802 CHIPLEY FL
2002-09-19 850-846 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - FL 4802 MADISON FL
2002-09-19 863-657 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - FL 4802 AVON PARK FL
2002-09-19 863-658 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - FL 4802 SEBRING FL
2002-09-19 863-659 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - FL 4802 LAKEPLACID FL
2002-09-19 864-399 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 SIMPSONVL SC
2002-09-19 910-725 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K SOUTHEPINS NC
2002-09-19 985-269 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → METROPCS, INC. 5562 HAMMOND LA
2002-09-18 252-579 0XXX1XXX8XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NC 3235 PLYMOUTH NC
2002-09-18 276-722 1XXX2XXX3XXX4XXX7XXX8XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 6827 ROCKY GAP VA
2002-09-18 339-203 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 WAKEFIELD MA
2002-09-18 413-244 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 SPRINGFLD MA
2002-09-18 435-565 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - UT 3231 PARK CITY UT
2002-09-18 517-759 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 ADRIAN MI
2002-09-18 615-556 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MURFREESBO TN
2002-09-18 774-272 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 AUBURN MA
2002-09-18 774-273 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 EASTON MA
2002-09-18 774-274 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 BROCKTON MA
2002-09-18 774-275 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 SHREWSBURY MA
2002-09-18 774-276 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 MILLBURY MA
2002-09-18 774-277 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 MEDWAY MA
2002-09-18 774-278 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 HOPKINTON MA
2002-09-18 774-279 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 FRAMINGHAM MA
2002-09-18 774-280 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 E DOUGLAS MA
2002-09-18 908-774 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → AT&T - LOCAL 7421 UNIONVILLE NJ
2002-09-18 978-875 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 HUDSON MA
2002-09-18 978-877 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 GROTON MA
2002-09-18 985-210 none assigned yet which blocks → METROPCS, INC. 5562 LAPLACE LA
2002-09-17 240-286 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN2 MD
2002-09-17 248-860 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 PONTIAC MI
2002-09-17 248-953 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 TROY MI
2002-09-17 250-290 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Golden —
2002-09-17 251-236 3XXX4XXX6XXX7XXX8XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 BREWTON AL
2002-09-17 260-237 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 LIGONIER IN
2002-09-17 260-239 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 ALBION IN
2002-09-17 269-535 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 THREERIVRS MI
2002-09-17 269-762 4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 KALAMAZOO MI

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.