NumberResearch Membership · Data 09/30/2026

Recent prefix assignments

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

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
Rogers Communications Canada Inc. (Wireless) 46
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 27
NEW CINGULAR WIRELESS PCS, LLC - IL 23
ONVOY, LLC - CA 19
New assignments by month Oct 2026 Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2019-03-14 620-900 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H BUCKLIN KS
2019-03-14 629-400 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H EASTSANGO TN
2019-03-14 657-374 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HUNTITNBCH CA
2019-03-14 657-399 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SANTA ANA CA
2019-03-14 657-410 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SILVERADO CA
2019-03-14 910-901 0XXX1XXX2XXX3XXX7XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - NC 638E PARKTON NC
2019-03-14 920-802 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - WI 225C SHEBOGNFLS WI
2019-03-14 930-999 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H RAMSEY IN
2019-03-14 980-303 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → ONVOY, LLC - NC 638E GOOSECREEK NC
2019-03-13 414-420 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - WI 225C MILWAUKZN4 WI
2019-03-13 754-238 0–9 XXXall 10 · 6 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 POMPANOBCH FL
2019-03-13 786-672 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 MIAMI FL
2019-03-13 856-508 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ 7134 PITMAN NJ
2019-03-13 941-261 0–9 XXXall 10 · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - FL 4802 VENICE FL
2019-03-13 941-262 0–9 XXXall 10 · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - FL 4802 SARASOTA FL
2019-03-12 269-895 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLCV - MI 543C ALLEGAN MI
2019-03-12 270-807 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 OAK GROVE KY
2019-03-12 405-861 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 EDMOND OK
2019-03-12 431-383 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Winnipeg —
2019-03-12 431-552 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Winnipeg —
2019-03-12 431-553 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Winnipeg —
2019-03-12 431-559 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Winnipeg —
2019-03-12 431-655 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Winnipeg —
2019-03-12 431-899 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Winnipeg —
2019-03-12 431-989 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Winnipeg —
2019-03-12 478-900 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → TERRA NOVA TELECOM INC. 145J LOUISVILLE GA
2019-03-12 509-666 0–9 XXXall 10 · 3 holders which blocks → COMMIO, LLC 939H SPOKANE WA
2019-03-12 681-261 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 FALLNGWTRS WV
2019-03-12 912-600 0–9 XXXall 10 · 3 holders which blocks → TERRA NOVA TELECOM INC. 145J SAVANNAH GA
2019-03-12 947-215 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SOUTHFIELD MI
2019-03-11 431-558 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Winnipeg —
2019-03-11 431-668 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Winnipeg —
2019-03-11 431-778 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Winnipeg —
2019-03-11 431-855 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Winnipeg —
2019-03-11 431-866 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Winnipeg —
2019-03-11 431-877 not yet reported which blocks → Rogers Communications Canada Inc. (Wireless) 8821 Winnipeg —
2019-03-11 470-461 0–9 XXXwhole prefix which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA NE GA
2019-03-11 571-536 0–9 XXXall 10 · 3 holders which blocks → CORETEL VIRGINIA, LLC - VA 5832 WSNGTNZN19 VA
2019-03-11 571-697 0–9 XXXall 10 · 6 holders which blocks → CORETEL VIRGINIA, LLC - VA 5832 TRIANGLE VA
2019-03-11 571-842 0–9 XXXall 10 · 5 holders which blocks → CORETEL VIRGINIA, LLC - VA 5832 WSNGTNZN08 VA
2019-03-11 628-266 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E CORTEMADRA CA
2019-03-11 628-433 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E IGNACIO CA
2019-03-11 657-373 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E PLACENTIA CA
2019-03-11 669-288 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNJS WEST CA
2019-03-11 669-305 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E GILROY CA
2019-03-08 207-421 1XXX8XXX9XXX · 2 holders which blocks → PEERLESS NETWORK OF MAINE, LLC- ME 925H WINTERPORT ME
2019-03-08 272-241 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MT CARMEL PA
2019-03-08 276-333 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H CLINTWOOD VA
2019-03-08 276-529 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H DANTE VA
2019-03-08 276-999 0XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H APPALACHIA VA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/30/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.