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
2018-08-15 314-408 0–9 XXXall 10 · 5 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K MEHLVILLE MO
2018-08-15 315-997 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E ONTARIO NY
2018-08-15 346-446 0–9 XXXall 10 · 3 holders which blocks → WIDE VOICE, LLC - TX 706G HOUSTON TX
2018-08-15 425-389 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 BELLEVUE WA
2018-08-15 480-530 0–9 XXXall 10 · 5 holders which blocks → VOIP INNOVATIONS, LLC 597F PHOENIX AZ
2018-08-15 484-917 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - PA 547E BERNVILLE PA
2018-08-15 515-815 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 AMES IA
2018-08-15 720-805 0–9 XXXall 10 · 2 holders which blocks → VOIP INNOVATIONS, LLC 597F DENVER CO
2018-08-15 850-787 0XXX1XXX2XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - FL 937C FREEPORT FL
2018-08-15 929-484 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN06 NY
2018-08-15 929-490 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN07 NY
2018-08-15 929-602 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NY 6622 NWYRCYZN12 NY
2018-08-15 970-743 0–9 XXXall 10 · 5 holders which blocks → ALLO COMMUNICATIONS LLC 907K FORTMORGAN CO
2018-08-14 270-947 0–9 XXXall 10 · 6 holders which blocks → POWERTEL KENTUCKY LICENSES, INC. 365C BEAVER DAM KY
2018-08-14 312-584 0–9 XXXall 10 · 2 holders which blocks → VOIP INNOVATIONS, LLC 597F CHICGOZN01 IL
2018-08-14 315-996 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E NORWOOD NY
2018-08-14 343-551 not yet reported which blocks → Bell Mobility 6574 Ottawa-Hull —
2018-08-14 346-355 0–9 XXXall 10 · 3 holders which blocks → VOIP INNOVATIONS, LLC 597F HOUSTON TX
2018-08-14 412-615 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 PTGSBNZN14 PA
2018-08-14 469-498 0–9 XXXall 10 · 3 holders which blocks → VOIP INNOVATIONS, LLC 597F DALLAS TX
2018-08-14 469-501 0–9 XXXall 10 · 7 holders which blocks → AIRUS, INC. - TX 951F DALLAS TX
2018-08-14 508-239 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 FRAMINGHAM MA
2018-08-14 561-382 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 BOCA RATON FL
2018-08-14 561-384 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 BOCA RATON FL
2018-08-14 737-239 0–9 XXXall 10 · 5 holders which blocks → VOIP INNOVATIONS, LLC 597F AUSTIN TX
2018-08-14 843-896 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - SC 077F HEMINGWAY SC
2018-08-14 902-943 not yet reported which blocks → Bell Mobility Aliant 329A Halifax —
2018-08-13 438-342 not yet reported which blocks → Bell Mobility 6574 Montreal —
2018-08-13 561-380 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 BOCA RATON FL
2018-08-13 647-395 not yet reported which blocks → Bell Mobility 6574 Toronto —
2018-08-10 205-771 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 TUSCALOOSA AL
2018-08-10 216-250 0–9 XXXall 10 · 4 holders which blocks → AIRESPRING, INC. 996H CLEVELAND OH
2018-08-10 315-989 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E NORFOLK NY
2018-08-10 365-996 not yet reported which blocks → TELUS Mobility 8303 Oakville —
2018-08-10 425-655 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 KIRKLAND WA
2018-08-10 438-440 not yet reported which blocks → Bell Mobility 6574 Montreal —
2018-08-10 480-514 0–9 XXXall 10 · 2 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 7217 PHOENIX AZ
2018-08-10 506-566 not yet reported which blocks → TELUS Mobility 8303 Saint John —
2018-08-10 561-397 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 BOCA RATON FL
2018-08-10 561-399 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 BOCA RATON FL
2018-08-10 762-309 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - GA 067D THOMSON GA
2018-08-10 825-361 not yet reported which blocks → Bell Mobility 6574 Calgary —
2018-08-10 870-497 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 JONESBORO AR
2018-08-10 930-205 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - IN 105F LANESVILLE IN
2018-08-09 236-586 not yet reported which blocks → TELUS Mobility 8301 Salmon Arm —
2018-08-09 236-824 not yet reported which blocks → Videotron Ltd. 383F Gulf Islands —
2018-08-09 432-255 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → AMA COMM., LLC DBA AMA*TECHTEL COMMUNICATIONS-TX 0132 TOYAH TX
2018-08-09 530-490 0–9 XXXall 10 · 6 holders which blocks → AIRESPRING, INC. 996H WOODLAND CA
2018-08-09 540-902 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → COMCAST IP PHONE, LLC 318J GREENWOOD VA
2018-08-09 734-884 0–9 XXXall 10 · 5 holders which blocks → AIRESPRING, INC. 996H LIVONIA MI

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.