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
— 267-483 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F PHPHSBZN45 PA
— 267-485 0–9 XXXall 10 · 5 holders which blocks → CORE COMMUNICATIONS, INC. - PA 3806 PHPHSBZN45 PA
— 267-486 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F PHPHSBZN45 PA
— 267-487 0–9 XXXall 10 · 7 holders which blocks → THE VOICE APPLICATION NETWORK, LLC 507J PHPHSBZN45 PA
— 267-488 1XXX6XXX7XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J PHPHSBZN45 PA
— 267-489 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J PHPHSBZN45 PA
— 267-491 1XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F WYCOMBE PA
— 267-493 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J WYCOMBE PA
— 267-494 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - PA 547E WYCOMBE PA
— 267-495 0XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J PHPHSBZN38 PA
— 267-497 2XXX3XXX5XXX6XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J SOUDERTON PA
— 267-498 0XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA 7434 LANSDALE PA
— 267-500 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - PA 547E HARLEYSVL PA
— 267-501 0–9 XXXwhole prefix which blocks → ONVOY, LLC - PA 547E PHLDLPHZN1 PA
— 267-502 0XXX1XXX3XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 PHPHSBZN37 PA
— 267-503 2XXX3XXX4XXX6XXX7XXX8XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J YARDLEY PA
— 267-508 2XXX3XXX7XXX8XXX · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHPHSBZN32 PA
— 267-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX PA
— 267-513 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 PHPHSBZN33 PA
— 267-514 5XXX which blocks → PAETEC ITEL, LLC 829J PHLDLPHZN1 PA
— 267-518 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA 7434 PHPHSBZN38 PA
— 267-520 0XXX2XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 PHPHSBZN41 PA
— 267-522 1XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J PHPHSBZN41 PA
— 267-523 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 PHPHSBZN41 PA
— 267-525 6XXX which blocks → PAETEC ITEL, LLC 829J PHPHSBZN41 PA
— 267-526 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHPHSBZN41 PA
— 267-527 0–9 XXXall 10 · 3 holders which blocks → HD CARRIER LLC 321J PHPHSBZN41 PA
— 267-529 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → RCN TELECOM SERVICES OF PENNSYLVANIA, INC. 7615 PHPHSBZN41 PA
— 267-531 8XXX which blocks → PAETEC ITEL, LLC 829J PHLDLPHZN2 PA
— 267-532 0XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J PHPHSBZN39 PA
— 267-536 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 PHPHSBZN34 PA
— 267-537 not yet reported which blocks → PAETEC ITEL, LLC 829J PHPHSBZN39 PA
— 267-540 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHPHSBZN42 PA
— 267-543 9XXX which blocks → PAETEC ITEL, LLC 829J PHPHSBZN42 PA
— 267-545 2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 PHPHSBZN42 PA
— 267-548 0XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J PHPHSBZN42 PA
— 267-549 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 PHLDLPHZN1 PA
— 267-550 0XXX1XXX4XXX5XXX7XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 PHPHSBZN42 PA
— 267-551 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F PHLDLPHZN3 PA
— 267-552 4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 PHPHSBZN42 PA
— 267-553 0XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - PA 002F PHPHSBZN42 PA
— 267-554 1XXX2XXX3XXX4XXX7XXX9XXX · 5 holders which blocks → PAETEC ITEL, LLC 829J PHPHSBZN42 PA
— 267-555 not yet reported which blocks → MULTIPLE OCN LISTING MULT DIR ASST PA
— 267-556 none assigned yet which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 PHPHSBZN42 PA
— 267-557 0XXX2XXX5XXX9XXX which blocks → PAETEC ITEL, LLC 829J PHPHSBZN42 PA
— 267-560 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → RCN TELECOM SERVICES OF PENNSYLVANIA, INC. 7615 PHPHSBZN43 PA
— 267-562 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHPHSBZN43 PA
— 267-563 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J PHPHSBZN43 PA
— 267-564 0XXX1XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 PHPHSBZN43 PA
— 267-565 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - PA 547E PHPHSBZN43 PA

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.