NumberResearch Membership · Data 09/22/2026

Recent prefix assignments

354 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/22/2026

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. 39
NEW CINGULAR WIRELESS PCS, LLC - IL 28
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - DC 26
ONVOY, LLC - NJ 20
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
2022-09-22 863-331 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E WINTER HVN FL
2022-09-22 941-294 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E VENICE FL
2022-09-22 941-297 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E BRADENTON FL
2022-09-22 941-298 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - FL 982E SARASOTA FL
2022-09-22 952-262 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 TWINCITIES MN
2022-09-21 224-485 0–9 XXXall 10 · 2 holders which blocks → NUSO, LLC 732J BARRINGTON IL
2022-09-21 315-315 0–9 XXXwhole prefix which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E SYRACUSE NY
2022-09-21 346-591 0XXX1XXX2XXX3XXX4XXX7XXX8XXX9XXX · 2 holders which blocks → COMCAST IP PHONE, LLC 318J PORTER HTS TX
2022-09-21 478-379 0–9 XXXall 10 · 4 holders which blocks → NUSO, LLC 732J DUBLIN GA
2022-09-21 480-910 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2022-09-21 501-480 0–9 XXXall 10 · 3 holders which blocks → NUSO, LLC 732J LITTLEROCK AR
2022-09-21 501-527 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J LITTLEROCK AR
2022-09-21 506-316 not yet reported which blocks → Distributel 081E Keswick —
2022-09-21 506-418 not yet reported which blocks → Distributel 081E Chipman —
2022-09-21 506-437 not yet reported which blocks → Distributel 081E Fredericton —
2022-09-21 506-438 not yet reported which blocks → Distributel 081E Gagetown —
2022-09-21 506-439 not yet reported which blocks → Distributel 081E Harvey Station —
2022-09-21 506-483 not yet reported which blocks → Distributel 081E McAdam —
2022-09-21 506-489 not yet reported which blocks → Distributel 081E Minto —
2022-09-21 506-490 not yet reported which blocks → Distributel 081E Nackawic —
2022-09-21 506-491 not yet reported which blocks → Distributel 081E Oromocto —
2022-09-21 506-492 not yet reported which blocks → Distributel 081E Bouctouche —
2022-09-21 518-518 0–9 XXXwhole prefix which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E ALBANY NY
2022-09-21 564-233 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - WA 006F OLYMPIA WA
2022-09-21 574-390 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 ELKHART IN
2022-09-21 606-250 0–9 XXXall 10 · 3 holders which blocks → INTEGRATED PATH COMMUNICATIONS - KENTUCKY, LLC-KY 847H LONDON KY
2022-09-21 606-455 0XXX1XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → INTEGRATED PATH COMMUNICATIONS - KENTUCKY, LLC-KY 847H MAYSVILLE KY
2022-09-21 607-999 0–9 XXXwhole prefix which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E BINGHAMTON NY
2022-09-21 623-291 0–9 XXXall 10 · 3 holders which blocks → NUSO, LLC 732J PHOENIX AZ
2022-09-21 672-802 not yet reported which blocks → Iristel Inc. 154E Williams Lake —
2022-09-21 720-967 0–9 XXXall 10 · 4 holders which blocks → LEAP TELECOM, LLC 616J DENVER CO
2022-09-21 770-585 0–9 XXXall 10 · 4 holders which blocks → NUSO, LLC 732J CARROLLTON GA
2022-09-21 782-553 not yet reported which blocks → Bell Mobility Aliant 329A Charlottetown —
2022-09-21 807-207 not yet reported which blocks → Distributel 082E Atikokan —
2022-09-21 807-208 not yet reported which blocks → Distributel 082E Fort Frances —
2022-09-21 807-209 not yet reported which blocks → Distributel 082E Geraldton —
2022-09-21 807-210 not yet reported which blocks → Distributel 082E Longlac —
2022-09-21 807-213 not yet reported which blocks → Distributel 082E Marathon —
2022-09-21 807-236 not yet reported which blocks → Distributel 082E Nipigon —
2022-09-21 807-237 not yet reported which blocks → Distributel 082E Red Lake —
2022-09-21 807-239 not yet reported which blocks → Distributel 082E Sioux Lookout —
2022-09-21 857-398 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT MIAMI E LICENSE, LLC 6889 ROXBURY MA
2022-09-21 865-433 0–9 XXXall 10 · 5 holders which blocks → NUSO, LLC 732J KNOXVILLE TN
2022-09-21 901-688 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 4 holders which blocks → NUSO, LLC 732J LAGRANGE TN
2022-09-21 904-852 0–9 XXXall 10 · 2 holders which blocks → POWERTEL JACKSONVILLE LICENSES, INC. 7472 FERNADNBCH FL
2022-09-21 912-735 0–9 XXXall 10 · 2 holders which blocks → NUSO, LLC 732J STATESBORO GA
2022-09-21 931-369 0–9 XXXall 10 · 3 holders which blocks → NUSO, LLC 732J TULLAHOMA TN
2022-09-21 941-293 0–9 XXXall 10 · 6 holders which blocks → NUSO, LLC 732J PALMETTO FL
2022-09-21 947-997 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 SOUTHFIELD MI
2022-09-21 949-323 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - CA 649C SADLBK VLY CA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/22/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.