NumberResearch Membership · Data 09/24/2026

Recent prefix assignments

358 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
2022-03-24 727-589 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 CLEARWATER FL
2022-03-24 734-982 0–9 XXXall 10 · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J TRENTON MI
2022-03-24 734-987 0–9 XXXall 10 · 2 holders which blocks → TON80 COMMUNICATIONS, LLC 516J PLYMOUTH MI
2022-03-24 771-209 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 WSHNGTNZN1 DC
2022-03-24 771-210 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - DC 6117 WSHNGTNZN1 DC
2022-03-24 825-542 not yet reported which blocks → Bell Mobility 6574 Edmonton —
2022-03-24 825-543 not yet reported which blocks → Bell Mobility 6574 Edmonton —
2022-03-24 862-401 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 NEWARK NJ
2022-03-24 970-809 0XXX1XXX7XXX8XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J RDFTHERLKS CO
2022-03-24 980-376 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NC 3235 CHARLOTTE NC
2022-03-23 332-733 0–9 XXXall 10 · 3 holders which blocks → TC SYSTEMS, INC. - NY 7140 NWYRCYZN01 NY
2022-03-23 365-431 not yet reported which blocks → Bell Mobility 6574 Hamilton —
2022-03-23 423-925 0–9 XXXall 10 · 6 holders which blocks → TON80 COMMUNICATIONS, LLC 516J LAFOLLETTE TN
2022-03-23 424-655 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H INGLEWOOD CA
2022-03-23 424-944 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H BEVERLYHLS CA
2022-03-23 438-570 not yet reported which blocks → Bell Mobility 6574 Montreal —
2022-03-23 445-447 0–9 XXXwhole prefix which blocks → ONVOY, LLC - PA 547E PHLDLPHZN1 PA
2022-03-23 474-350 not yet reported which blocks → Bell Mobility 6574 Saskatoon —
2022-03-23 575-775 5XXX7XXX · 2 holders which blocks → ONVOY, LLC - NM 206F TULAROSA NM
2022-03-23 667-622 0–9 XXXall 10 · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J PIKESVILLE MD
2022-03-23 667-693 7XXX which blocks → TON80 COMMUNICATIONS, LLC 516J VIENNA MD
2022-03-23 747-342 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H LACRSCENTA CA
2022-03-23 747-366 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H NORTHRIDGE CA
2022-03-23 747-567 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H BRBN BRBN CA
2022-03-23 747-667 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 4 holders which blocks → FRACTEL, LLC 965H SUNLD TJNG CA
2022-03-23 771-204 0–9 XXXwhole prefix which blocks → BANDWIDTH.COM CLEC, LLC - DC 074F WSHNGTNZN1 DC
2022-03-23 771-205 0–9 XXXwhole prefix which blocks → BANDWIDTH.COM CLEC, LLC - DC 074F WSHNGTNZN1 DC
2022-03-23 771-206 0–9 XXXwhole prefix which blocks → BANDWIDTH.COM CLEC, LLC - DC 074F WSHNGTNZN1 DC
2022-03-23 771-207 0–9 XXXwhole prefix which blocks → BANDWIDTH.COM CLEC, LLC - DC 074F WSHNGTNZN1 DC
2022-03-23 771-208 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - DC 074F WSHNGTNZN1 DC
2022-03-23 771-333 0–9 XXXall 10 · 3 holders which blocks → WIDE VOICE, LLC - DC 538H WSHNGTNZN1 DC
2022-03-23 779-463 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → TON80 COMMUNICATIONS, LLC 516J MORRIS IL
2022-03-23 807-389 not yet reported which blocks → Bell Mobility 6574 Kenora —
2022-03-23 839-388 0–9 XXXwhole prefix which blocks → ONVOY, LLC - SC 548E ROCK HILL SC
2022-03-23 863-330 0–9 XXXall 10 · 5 holders which blocks → COMMIO, LLC 939H WINTER HVN FL
2022-03-22 213-676 0–9 XXXwhole prefix which blocks → T-MOBILE USA, INC. 6529 LSAN DA 14 CA
2022-03-22 213-868 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H LSAN DA 01 CA
2022-03-22 213-886 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H LSAN DA 03 CA
2022-03-22 213-898 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H LSAN DA 05 CA
2022-03-22 213-997 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H LSAN DA 09 CA
2022-03-22 213-998 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H LSAN DA 07 CA
2022-03-22 218-669 0XXX1XXX4XXX6XXX9XXX · 5 holders which blocks → TON80 COMMUNICATIONS, LLC 516J ROSEAU MN
2022-03-22 218-997 0XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J DETROITLKS MN
2022-03-22 224-459 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 LIBERTYVL IL
2022-03-22 229-663 0–9 XXXall 10 · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J AMERICUS GA
2022-03-22 253-340 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 KENT WA
2022-03-22 307-410 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 POWELL WY
2022-03-22 318-873 0XXX1XXX3XXX4XXX · 4 holders which blocks → TON80 COMMUNICATIONS, LLC 516J ST JOSEPH LA
2022-03-22 318-978 8XXX which blocks → TON80 COMMUNICATIONS, LLC 516J RINGGOLD LA
2022-03-22 438-548 not yet reported which blocks → FGLTEL Inc. 139J Montreal —

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.