NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

355 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

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. 38
ONVOY, LLC - CA 31
NEW CINGULAR WIRELESS PCS, LLC - IL 28
NEW CINGULAR WIRELESS PCS, LLC - DC 26
ONVOY, LLC - NJ 18
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
2023-04-24 437-979 not yet reported which blocks → TELUS Mobility 8303 Toronto —
2023-04-24 478-480 0XXX1XXX8XXX · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H WADLEY GA
2023-04-24 479-506 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BENTONVL AR
2023-04-24 534-214 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 RICE LAKE WI
2023-04-24 672-376 not yet reported which blocks → Bell Mobility 6574 Abbotsford —
2023-04-24 825-553 not yet reported which blocks → Bell Mobility 6574 Edmonton —
2023-04-24 828-720 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H FORESTCITY NC
2023-04-24 828-740 0XXX1XXX2XXX4XXX5XXX8XXX9XXX · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H SPRUCEPINE NC
2023-04-24 980-540 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H STATESVL NC
2023-04-24 980-840 0XXX1XXX4XXX8XXX · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H TROUTMAN NC
2023-04-24 980-870 0XXX1XXX2XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H CHERRYVL NC
2023-04-24 984-848 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H WENDELL NC
2023-04-21 272-319 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PITTSTON PA
2023-04-21 272-320 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NEWMILFORD PA
2023-04-21 272-321 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PLEASANTMT PA
2023-04-21 332-274 0–9 XXXwhole prefix which blocks → TC SYSTEMS, INC. - NY 7140 NWYRCYZN01 NY
2023-04-21 502-731 0XXX1XXX7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SULPHUR KY
2023-04-21 567-415 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LIMA OH
2023-04-21 672-375 not yet reported which blocks → Bell Mobility 6574 Abbotsford —
2023-04-21 716-659 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 JAMESTOWN NY
2023-04-21 825-552 not yet reported which blocks → Bell Mobility 6574 Edmonton —
2023-04-21 839-390 0XXX1XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H HICKORYGRV SC
2023-04-21 864-870 0–9 XXXall 10 · 5 holders which blocks → ONVOY SPECTRUM, LLC 624H ANDERSON SC
2023-04-21 912-750 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H BAXLEY GA
2023-04-21 914-561 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSCHSTZN08 NY
2023-04-21 984-331 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 OXFORD NC
2023-04-20 220-248 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 ATHENS OH
2023-04-20 240-989 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 MYERSVILLE MD
2023-04-20 276-297 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 NORTON VA
2023-04-20 447-254 0XXX1XXX2XXX4XXX7XXX9XXX · 5 holders which blocks → NUSO, LLC 732J ATHENS IL
2023-04-20 531-324 0–9 XXXall 10 · 3 holders which blocks → NUSO, LLC 732J LINCOLN NE
2023-04-20 571-618 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 WSNGTNZN17 VA
2023-04-20 579-504 not yet reported which blocks → Fibernetics Corporation 464D St-Hyacinthe —
2023-04-20 579-507 not yet reported which blocks → Fibernetics Corporation 464D Terrebonne —
2023-04-20 580-805 0XXX1XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 GARBER OK
2023-04-20 580-904 0XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 SHATTUCK OK
2023-04-20 667-432 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CATONSVL MD
2023-04-20 681-464 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 HNTNGTNZN1 WV
2023-04-20 762-357 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ROME GA
2023-04-20 769-308 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BRANDON MS
2023-04-20 807-240 not yet reported which blocks → TBayTel 988H Sioux Lookout —
2023-04-20 810-307 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAPEER MI
2023-04-20 835-218 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PHPHSBZN23 PA
2023-04-20 938-209 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 SCOTTSBORO AL
2023-04-19 218-620 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J MOORHEAD MN
2023-04-19 269-403 0–9 XXXall 10 · 3 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J BATTLE CRK MI
2023-04-19 309-940 0XXX which blocks → VOIP INNOVATIONS, LLC 597F BLOOMINGTN IL
2023-04-19 352-819 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 BROOKSVL FL
2023-04-19 437-561 not yet reported which blocks → TELUS Integrated Communications 2782 Toronto —
2023-04-19 478-371 0–9 XXXall 10 · 4 holders which blocks → BOOST SUBSCRIBERCO L.L.C. 490J WARNERRBNS GA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.