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
2019-01-10 660-650 0–9 XXXwhole prefix which blocks → ONVOY, LLC - MO 093F SEDALIA MO
2019-01-10 754-236 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 HOLLYWOOD FL
2019-01-10 762-300 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - GA 067D GAY GA
2019-01-10 762-600 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → ONVOY, LLC - GA 067D MONTICELLO GA
2019-01-10 762-760 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → ONVOY, LLC - GA 067D TUNNELHILL GA
2019-01-10 762-900 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - GA 067D PENDERGRSS GA
2019-01-10 910-753 0–9 XXXall 10 · 4 holders which blocks → SOUTH CAROLINA NET, INC. - NC 511C FAYETTEVL NC
2019-01-10 956-301 0–9 XXXall 10 · 2 holders which blocks → STPCS JOINT VENTURE, LLC 4290 LAREDO TX
2019-01-09 206-825 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - WA 483E BAINBDG IS WA
2019-01-09 226-563 not yet reported which blocks → Bruce Municipal Telephone System 038E Chesley —
2019-01-09 407-728 0–9 XXXwhole prefix which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 ORLANDO FL
2019-01-09 407-743 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 ORLANDO FL
2019-01-09 407-759 0–9 XXXall 10 · 4 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 WINTERPARK FL
2019-01-09 425-480 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 HALLS LAKE WA
2019-01-09 480-590 0–9 XXXwhole prefix which blocks → COMCAST IP PHONE, LLC 318J PHOENIX AZ
2019-01-09 509-612 3XXX7XXX8XXX · 2 holders which blocks → ONVOY, LLC - WA 483E KETTLE FLS WA
2019-01-08 346-376 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7138 SATSUMA TX
2019-01-08 352-581 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 OCALA FL
2019-01-08 385-294 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 OGDEN UT
2019-01-08 469-590 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FRISCO TX
2019-01-08 469-591 0–9 XXXall 10 · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - TX 7148 MCKINNEY TX
2019-01-08 470-520 0–9 XXXall 10 · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - GA 7435 ATLANTA GA
2019-01-08 579-730 not yet reported which blocks → Videotron Ltd. 328F St-Jerome —
2019-01-08 612-552 0–9 XXXall 10 · 2 holders which blocks → METROPCS, INC. 5562 TWINCITIES MN
2019-01-08 831-292 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 SOLEDAD CA
2019-01-08 873-552 not yet reported which blocks → Videotron Ltd. 328F Sherbrooke —
2019-01-08 913-348 0–9 XXXall 10 · 5 holders which blocks → PAETEC ITEL, LLC 829J KANSASCITY KS
2019-01-07 226-683 not yet reported which blocks → Managed Network Systems Inc. 2776 Emeryville —
2019-01-07 226-684 not yet reported which blocks → Managed Network Systems Inc. 2776 Belle River —
2019-01-07 251-900 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - AL 604E EXCEL AL
2019-01-07 769-500 0XXX1XXX2XXX3XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - MS 719E TERRY MS
2019-01-07 769-600 0XXX1XXX2XXX3XXX4XXX6XXX8XXX · 4 holders which blocks → ONVOY, LLC - MS 719E SILVER CRK MS
2019-01-07 769-800 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - MS 719E UNION MS
2019-01-07 848-800 0–9 XXXall 10 · 4 holders which blocks → CORETEL NEW JERSEY, INC. - NJ 482F NEWBRNSWCK NJ
2019-01-04 223-242 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 MARIETTA PA
2019-01-04 309-520 0XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → T-MOBILE USA, INC. 6529 ROCKISLAND IL
2019-01-04 309-553 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 3 holders which blocks → T-MOBILE USA, INC. 6529 ROCKISLAND IL
2019-01-04 416-905 not yet reported which blocks → InnSysVoice Corp 383H Toronto —
2019-01-04 720-731 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CO 6118 LONGMONT CO
2019-01-04 848-382 0–9 XXXall 10 · 2 holders which blocks → CORETEL NEW JERSEY, INC. - NJ 482F DUNELLEN NJ
2019-01-03 361-342 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 C CHRISTI TX
2019-01-03 407-714 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 WINTERPARK FL
2019-01-03 754-233 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - FL 8300 POMPANOBCH FL
2019-01-03 848-678 0–9 XXXall 10 · 3 holders which blocks → CORETEL NEW JERSEY, INC. - NJ 482F PERTHAMBOY NJ
2019-01-03 854-201 0–9 XXXall 10 · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA SC- LLC 635C WALTERBORO SC
2019-01-03 931-990 8XXX9XXX · 2 holders which blocks → TERRA NOVA TELECOM INC. 145J PETERSBURG TN
2019-01-03 939-300 0XXX1XXX3XXX4XXX5XXX9XXX · 5 holders which blocks → NATURAL G.C. INC. - PR 985G SANLORENZO PR
2019-01-03 939-393 2XXX3XXX4XXX5XXX9XXX · 4 holders which blocks → NATURAL G.C. INC. - PR 985G BARCELONTA PR
2019-01-03 939-800 0XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → NATURAL G.C. INC. - PR 985G ADJUNTAS PR
2018-12-31 207-708 0–9 XXXall 10 · 5 holders which blocks → BELL ATLANTIC MOBILE, INC 6386 SKOWHEGAN ME

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.