NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

355 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
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
Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2009-10-27 214-600 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GRANDPRARI TX
2009-10-27 226-235 not yet reported which blocks → TELUS Mobility 8303 London —
2009-10-27 252-712 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 AYDEN NC
2009-10-27 252-805 7XXX8XXX · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC 7835 STANTONSBG NC
2009-10-27 581-234 not yet reported which blocks → TELUS Mobility 8303 Chicoutimi —
2009-10-27 581-246 not yet reported which blocks → TELUS Mobility 8303 Rimouski —
2009-10-27 601-345 0–9 XXXall 10 · 4 holders which blocks → POWERTEL MEMPHIS LICENSES, INC. 7474 JACKSON MS
2009-10-27 662-776 0XXX1XXX2XXX3XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MTPLEASANT MS
2009-10-27 760-428 0–9 XXXall 10 · 5 holders which blocks → FRONTIER CALIFORNIA INC. 4420 RIDGECREST CA
2009-10-27 832-480 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 CLEVELAND TX
2009-10-26 319-250 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - IA 221F FT MADISON IA
2009-10-26 424-253 0–9 XXXall 10 · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BEVERLYHLS CA
2009-10-26 563-217 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IA 9877 WAUKON IA
2009-10-26 570-516 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 POTTSVILLE PA
2009-10-26 641-243 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IA 9877 MASON CITY IA
2009-10-26 678-790 0–9 XXXwhole prefix which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 WINDER GA
2009-10-23 406-942 0XXX1XXX2XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 6564 GLASGOW MT
2009-10-23 479-275 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHARLESTON AR
2009-10-23 541-645 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 HOOD RIVER OR
2009-10-23 762-208 0–9 XXXall 10 · 4 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 COLUMBUS GA
2009-10-23 817-901 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WEATHERFD TX
2009-10-23 920-692 0XXX1XXX2XXX5XXX9XXX · 3 holders which blocks → MICHIGAN WIRELESS, LLC DBA BUG TUSSEL WIRELESS 698E MANAWA WI
2009-10-22 360-524 0–9 XXXall 10 · 5 holders which blocks → QWEST CORPORATION 9638 VANCOUVER WA
2009-10-22 603-701 1XXX2XXX · 2 holders which blocks → IDT AMERICA, CORP. - NH 314C NEW DURHAM NH
2009-10-22 713-487 0–9 XXXall 10 · 2 holders which blocks → U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J HOUSTON TX
2009-10-22 805-326 0–9 XXXwhole prefix which blocks → LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 7718 PASOROBLES CA
2009-10-22 903-204 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 MTPLEASANT TX
2009-10-22 971-257 1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K CLOVERDALE OR
2009-10-21 404-981 0–9 XXXall 10 · 3 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA GA
2009-10-21 438-869 not yet reported which blocks → TELUS Mobility 8303 Montreal —
2009-10-21 438-870 not yet reported which blocks → TELUS Mobility 8303 Montreal —
2009-10-21 581-981 not yet reported which blocks → Videotron Ltd. 8306 Quebec —
2009-10-21 647-457 not yet reported which blocks → TELUS Mobility 8303 Toronto —
2009-10-21 647-458 not yet reported which blocks → TELUS Mobility 8303 Toronto —
2009-10-21 706-619 0–9 XXXall 10 · 3 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 AUGUSTA GA
2009-10-21 765-486 0XXX6XXX · 2 holders which blocks → COMCAST IP PHONE, LLC 318J MARKLEVL IN
2009-10-21 772-242 0–9 XXXall 10 · 4 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 FORTPIERCE FL
2009-10-21 805-324 0–9 XXXall 10 · 6 holders which blocks → METROPCS, INC. 5562 SANBARBARA CA
2009-10-21 902-579 not yet reported which blocks → TELUS Mobility 8303 Halifax —
2009-10-20 225-532 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ALBANY LA
2009-10-20 229-240 not yet reported which blocks → CITY OF THOMASVILLE 6145 BAINBRIDGE GA
2009-10-20 313-358 0–9 XXXwhole prefix which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 DETROITZN6 MI
2009-10-20 615-877 0–9 XXXwhole prefix which blocks → POWERTEL NASHVILLE LICENSES, INC. 7476 NASHVILLE TN
2009-10-20 615-935 0–9 XXXwhole prefix which blocks → POWERTEL NASHVILLE LICENSES, INC. 7476 NASHVILLE TN
2009-10-20 720-328 0–9 XXXall 10 · 2 holders which blocks → COMCAST IP PHONE, LLC 318J DENVER CO
2009-10-20 865-287 0–9 XXXwhole prefix which blocks → POWERTEL NASHVILLE LICENSES, INC. 7476 KNOXVILLE TN
2009-10-19 269-213 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BATTLE CRK MI
2009-10-19 702-530 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 LAS VEGAS NV
2009-10-19 832-522 0–9 XXXwhole prefix which blocks → LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7074 BARKER TX
2009-10-19 865-283 0–9 XXXwhole prefix which blocks → POWERTEL NASHVILLE LICENSES, INC. 7476 KNOXVILLE TN

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.