NumberResearch Membership · Data 09/29/2026

Recent prefix assignments

347 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/29/2026

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. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 28
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 23
ONVOY, LLC - CA 19
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
2016-09-08 814-816 3XXX4XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - PA 547E CARROLLTN PA
2016-09-08 816-915 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 KANSASCITY MO
2016-09-08 854-202 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SC 6398 CHARLESTON SC
2016-09-08 872-804 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF ILLINOIS, LLC - IL 063E CHICGOZN02 IL
2016-09-08 912-483 0–9 XXXall 10 · 3 holders which blocks → PEERLESS NETWORK OF GEORGIA, LLC - GA 909E SAVANNAH GA
2016-09-07 239-778 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - FL 937C NAPLES FL
2016-09-07 458-231 0–9 XXXall 10 · 6 holders which blocks → QWEST CORPORATION 9638 PRINEVILLE OR
2016-09-07 469-514 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FRISCO TX
2016-09-07 561-812 0–9 XXXall 10 · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 WPALMBEACH FL
2016-09-07 579-470 not yet reported which blocks → ISP Telecom Inc. 4727 Lanoraie —
2016-09-07 579-471 not yet reported which blocks → ISP Telecom Inc. 4727 Crabtree —
2016-09-07 579-472 not yet reported which blocks → ISP Telecom Inc. 4727 Berthierville —
2016-09-07 619-771 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - CA 649C LA MESA CA
2016-09-07 650-304 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 PALO ALTO CA
2016-09-07 681-249 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MOUNT HOPE WV
2016-09-07 720-710 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - CO 026D DENVER CO
2016-09-07 737-881 0–9 XXXall 10 · 8 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BASTROP TX
2016-09-07 778-547 not yet reported which blocks → TELUS 8086 Cloverdale —
2016-09-07 779-801 0–9 XXXall 10 · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - IL 7136 KANKAKEE IL
2016-09-07 812-978 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 HAYSVILLE IN
2016-09-07 812-999 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 6 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J OAKLAND CY IN
2016-09-07 831-201 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 SANTA CRUZ CA
2016-09-06 236-601 not yet reported which blocks → Iristel Inc. 154E Prince George —
2016-09-06 272-225 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - PA 547E WEATHERLY PA
2016-09-06 272-282 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - PA 547E MCKEANSBG PA
2016-09-06 272-381 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - PA 547E SCHUYLKHVN PA
2016-09-06 346-570 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7074 HSTNSUBURB TX
2016-09-06 502-975 0–9 XXXall 10 · 3 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J LOUISVILLE KY
2016-09-06 719-627 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 6567 COLORDOSPG CO
2016-09-06 782-356 not yet reported which blocks → TELUS Integrated Communications 2782 Pubnico —
2016-09-06 814-338 2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - PA 547E PTALLEGANY PA
2016-09-06 814-399 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - PA 547E SUGARGROVE PA
2016-09-06 814-485 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC - PA 547E SOMERSET PA
2016-09-06 814-540 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - PA 547E NANTY GLO PA
2016-09-06 857-425 0–9 XXXall 10 · 7 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 BRIGHTON MA
2016-09-06 978-962 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 LEOMINSTER MA
2016-09-02 205-519 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BESSEMER AL
2016-09-02 205-526 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 TUSCALOOSA AL
2016-09-02 209-641 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 STOCKTON CA
2016-09-02 226-827 not yet reported which blocks → TELUS Integrated Communications 2782 Maidstone —
2016-09-02 240-451 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - MD 876D THURMONT MD
2016-09-02 240-862 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - MD 876D MT SAVAGE MD
2016-09-02 240-870 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → ONVOY, LLC - MD 876D MIDDLETOWN MD
2016-09-02 240-908 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - MD 876D WALKERSVL MD
2016-09-02 240-913 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - MD 876D DAMASCS240 MD
2016-09-02 251-264 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MOBILE AL
2016-09-02 270-561 0XXX2XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - KY 896E MADISONVL KY
2016-09-02 272-204 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - PA 547E FRIEDENSBG PA
2016-09-02 434-225 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - VA 138E DRAKESBRCH VA
2016-09-02 562-337 0–9 XXXall 10 · 6 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K LONG BEACH CA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/29/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.