NumberResearch Membership · Data 09/22/2026

Recent prefix assignments

354 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/22/2026

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. 39
NEW CINGULAR WIRELESS PCS, LLC - IL 28
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - DC 26
ONVOY, LLC - NJ 20
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
2011-03-23 647-748 not yet reported which blocks → Rogers Communications Canada Inc. (Cable) 743B Toronto —
2011-03-23 828-629 not yet reported which blocks → BALSAMWEST FIBERNET, LLC - NC 801D ANDREWS NC
2011-03-23 845-280 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E PHOENICIA NY
2011-03-23 902-207 not yet reported which blocks → Bragg Communications Inc. 421G Shelburne —
2011-03-23 902-815 not yet reported which blocks → Bragg Communications Inc. 421G Yarmouth —
2011-03-22 224-900 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 WHEELING IL
2011-03-22 226-924 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Hespeler —
2011-03-22 226-933 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Brantford —
2011-03-22 226-934 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Brantford —
2011-03-22 289-771 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Cobourg —
2011-03-22 289-772 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Oakville —
2011-03-22 319-383 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 IOWA CITY IA
2011-03-22 417-352 0XXX1XXX2XXX3XXX4XXX7XXX8XXX · 5 holders which blocks → AT&T ENTERPRISES, LLC 516C WALNUT GRV MO
2011-03-22 435-485 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 6571 BLANDING UT
2011-03-22 469-264 0–9 XXXall 10 · 5 holders which blocks → AT&T ENTERPRISES, LLC 516C ROCKWALL TX
2011-03-22 479-323 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → AT&T ENTERPRISES, LLC 516C GRAVETTE AR
2011-03-22 515-525 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 DES MOINES IA
2011-03-22 660-324 0–9 XXXall 10 · 4 holders which blocks → AT&T ENTERPRISES, LLC 516C SLATER MO
2011-03-22 682-500 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 GRANBURY TX
2011-03-22 701-417 0–9 XXXwhole prefix which blocks → QWEST CORPORATION 9631 FARGO ND
2011-03-22 705-993 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Barrie —
2011-03-22 705-994 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Collingwood —
2011-03-22 870-742 0XXX2XXX7XXX · 3 holders which blocks → AT&T ENTERPRISES, LLC 516C STRONG AR
2011-03-21 249-878 not yet reported which blocks → TELUS Mobility 8303 Sudbury —
2011-03-21 361-420 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - TX 004F CLARKWOOD TX
2011-03-21 512-666 0–9 XXXall 10 · 5 holders which blocks → EVOLVE CELLULAR, INC. 139F AUSTIN TX
2011-03-21 518-460 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E GALWAY NY
2011-03-21 518-468 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E GREENFLCTR NY
2011-03-21 518-520 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E PALENVILLE NY
2011-03-21 631-407 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E SOUTHOLD NY
2011-03-21 803-716 0–9 XXXall 10 · 3 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 AIKEN SC
2011-03-21 929-233 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 NWYRCYZN08 NY
2011-03-21 936-221 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 NACOGDOCHS TX
2011-03-20 304-330 not yet reported which blocks → AMERICAN MESSAGING SERVICES, LLC 9748 CHRLSTNZN1 WV
2011-03-18 203-590 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CT 4800 TRUMBULL CT
2011-03-18 210-799 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SANANTONIO TX
2011-03-18 210-848 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SANANTONIO TX
2011-03-18 226-232 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Woodstock —
2011-03-18 248-803 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - MI 991E ORTONVILLE MI
2011-03-18 249-358 not yet reported which blocks → TELUS Mobility 8303 North Bay —
2011-03-18 269-421 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - MI 991E BERRIENSPG MI
2011-03-18 289-979 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Oshawa —
2011-03-18 306-444 not yet reported which blocks → TELUS Mobility 8303 Davidson —
2011-03-18 315-757 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E MORAVIA NY
2011-03-18 315-758 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E WEEDSPORT NY
2011-03-18 318-582 0–9 XXXall 10 · 7 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MONROE LA
2011-03-18 336-867 0–9 XXXall 10 · 5 holders which blocks → PIEDMONT COMMUNICATIONS SERVICES, INC. - NC 035B LEXINGTON NC
2011-03-18 336-933 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - NC 998E YANCEYVL NC
2011-03-18 404-971 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA GA
2011-03-18 413-400 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - MA 990E MONTAGUE MA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/22/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.