NumberResearch Membership · Data 09/24/2026

Recent prefix assignments

349 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/24/2026

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 31
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - IL 27
ONVOY, LLC - NJ 15
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
2022-09-13 571-586 0–9 XXXwhole prefix which blocks → ONVOY, LLC - VA 138E HERNDON VA
2022-09-13 603-207 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - NH 637E DERRY NH
2022-09-13 603-713 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - NH 637E NASHUA NH
2022-09-13 603-802 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - NH 637E CONCORD NH
2022-09-13 743-262 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MOUNT AIRY NC
2022-09-13 769-286 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MS 6396 BROOKHAVEN MS
2022-09-13 770-589 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E ATLANTA NE GA
2022-09-13 782-413 not yet reported which blocks → Bell Mobility Aliant 329A Halifax —
2022-09-13 782-543 not yet reported which blocks → Bell Mobility Aliant 329A Summerside —
2022-09-13 807-395 not yet reported which blocks → Bell Mobility 6574 Kenora —
2022-09-13 825-956 not yet reported which blocks → Iristel Inc. 154E Vauxhall —
2022-09-13 840-220 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E RIALTO CA
2022-09-13 862-407 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 PATERSON NJ
2022-09-13 930-263 0XXX1XXX8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J EVANSVILLE IN
2022-09-13 930-264 1XXX which blocks → PAETEC ITEL, LLC 829J BLOOMINGTN IN
2022-09-13 939-367 0XXX1XXX2XXX3XXX8XXX9XXX · 3 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 FAJARDO PR
2022-09-12 448-208 0–9 XXXall 10 · 5 holders which blocks → COMCAST IP PHONE, LLC 318J PERRY FL
2022-09-12 448-413 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - FL 937C MUNSON FL
2022-09-12 689-680 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - FL 937C KISSIMMEE FL
2022-09-12 725-285 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 LAS VEGAS NV
2022-09-12 782-638 not yet reported which blocks → Bell Mobility Aliant 329A Halifax —
2022-09-12 825-548 not yet reported which blocks → Iristel Inc. 154E Strathmore —
2022-09-12 825-947 not yet reported which blocks → Iristel Inc. 154E Valleyview —
2022-09-12 904-851 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E BALDWIN FL
2022-09-12 931-869 0XXX3XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → COMMIO, LLC 939H COOKEVILLE TN
2022-09-09 209-972 0–9 XXXall 10 · 4 holders which blocks → HD CARRIER LLC 321J MANTECA CA
2022-09-09 225-494 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 GONZALES LA
2022-09-09 236-782 not yet reported which blocks → Bell Mobility 6574 Vancouver —
2022-09-09 431-949 not yet reported which blocks → Bell Mobility 6574 Winnipeg —
2022-09-09 440-881 0XXX1XXX6XXX8XXX9XXX · 5 holders which blocks → METROPCS, INC. 5562 MIDDLEFLD OH
2022-09-09 513-740 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - OH 464C HAMILTON OH
2022-09-09 618-864 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 HARRISBURG IL
2022-09-09 618-865 9XXX which blocks → BOOST SUBSCRIBERCO L.L.C. 490J LIVINGSTON IL
2022-09-09 618-868 8XXX9XXX · 2 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J PRAIRIETN IL
2022-09-09 618-870 0XXX1XXX7XXX8XXX9XXX · 5 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J BETHALTO IL
2022-09-09 656-205 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPANTH FL
2022-09-09 672-372 not yet reported which blocks → Bell Mobility 6574 Abbotsford —
2022-09-09 716-212 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 SALAMANCA NY
2022-09-09 786-889 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HOMESTEAD FL
2022-09-09 786-890 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MIAMI FL
2022-09-09 825-495 not yet reported which blocks → Iristel Inc. 154E Stony Plain —
2022-09-09 825-742 not yet reported which blocks → Bell Mobility 6574 Calgary —
2022-09-09 825-752 not yet reported which blocks → Iristel Inc. 154E Sexsmith —
2022-09-09 845-862 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC- NY 384C GOSHEN NY
2022-09-09 864-215 0XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → ONVOY, LLC - SC 548E UNION SC
2022-09-09 904-848 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 MIDDLEBURG FL
2022-09-09 912-664 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 DOUGLAS GA
2022-09-09 980-419 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 MONROE NC
2022-09-08 213-679 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 14 CA
2022-09-08 406-405 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - MT 453F LIBBY MT

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/24/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.