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
2002-08-20 262-447 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WI 5489 WAUBEKA WI
2002-08-20 262-448 0XXX1XXX2XXX3XXX6XXX7XXX8XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WI 5489 TWIN LAKES WI
2002-08-20 262-476 0XXX2XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WI 5489 BELGIUM WI
2002-08-20 262-477 0XXX1XXX2XXX3XXX5XXX6XXX7XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WI 5489 KEWASKUM WI
2002-08-20 281-229 4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 DICKINSON TX
2002-08-20 289-360 not yet reported which blocks → TELUS Integrated Communications 2782 Cooksville —
2002-08-20 337-342 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 STMARTINVL LA
2002-08-20 401-230 0–9 XXXall 10 · 3 holders which blocks → PAETEC ITEL, LLC 829J PROVIDENCE RI
2002-08-20 416-797 not yet reported which blocks → TELUS Mobility 8303 Toronto —
2002-08-20 423-545 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TN 4806 MADISONVL TN
2002-08-20 423-546 0XXX1XXX3XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TN 4806 BULLS GAP TN
2002-08-20 443-623 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 6855 GLENBURNIE MD
2002-08-20 514-222 not yet reported which blocks → TELUS Mobility 8303 Montreal —
2002-08-20 514-884 not yet reported which blocks → TELUS Mobility 8303 Montreal —
2002-08-20 609-741 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CAPMAYCTHS NJ
2002-08-20 609-742 8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PLEASANTVL NJ
2002-08-20 647-828 not yet reported which blocks → TELUS Mobility 8303 Toronto —
2002-08-20 660-225 1XXX2XXX3XXX4XXX5XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MO 4932 CENTERVIEW MO
2002-08-20 715-220 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX which blocks → LEVEL 3 COMMUNICATIONS, LLC - WI 5489 HUDSON WI
2002-08-20 715-316 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WI 5489 COLBY WI
2002-08-20 715-406 0XXX2XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WI 5489 SPENCER WI
2002-08-20 715-407 0XXX3XXX5XXX6XXX7XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WI 5489 STRATFORD WI
2002-08-20 715-408 0XXX2XXX6XXX7XXX8XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WI 5489 OWEN WI
2002-08-20 715-502 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WI 5489 MARSHFIELD WI
2002-08-20 715-503 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WI 5489 LOYAL WI
2002-08-20 719-937 0XXX1XXX2XXX3XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CO 6118 ALAMOSA CO
2002-08-20 803-792 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - SC 5258 YORK SC
2002-08-20 803-795 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - SC 5258 SUMTER SC
2002-08-20 803-825 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - SC 5258 MANNING SC
2002-08-20 803-853 0XXX1XXX3XXX6XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - SC 5258 BISHOPVL SC
2002-08-20 812-666 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 ORLEANS IN
2002-08-20 812-702 0XXX1XXX2XXX3XXX8XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 CLAY CITY IN
2002-08-20 812-710 0XXX1XXX2XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 FARMERSBG IN
2002-08-20 812-712 none assigned yet which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 FAIRBANKS IN
2002-08-20 812-716 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 GREENSBURG IN
2002-08-20 812-717 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 BATESVILLE IN
2002-08-20 812-718 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 NO VERNON IN
2002-08-20 812-722 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 SCOTTSBURG IN
2002-08-20 812-730 2XXX5XXX7XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 WORTHINGTN IN
2002-08-20 812-731 none assigned yet which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 OAKTOWN IN
2002-08-20 812-733 0XXX1XXX3XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 SALEM IN
2002-08-20 812-741 2XXX which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 WHEATLAND IN
2002-08-20 812-750 0XXX1XXX2XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 VERSAILLES IN
2002-08-20 812-757 0XXX1XXX2XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 BICKNELL IN
2002-08-20 812-762 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 HANOVER IN
2002-08-20 812-770 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 HAZLETON IN
2002-08-20 812-801 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 MADISON IN
2002-08-20 812-809 0XXX1XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 PETERSBURG IN
2002-08-20 812-813 0XXX2XXX5XXX6XXX8XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 FREELANDVL IN
2002-08-20 814-701 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - PA 4007 SOMERSET PA

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.