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
2002-08-06 229-356 5XXX6XXX7XXX8XXX which blocks → SOUTHERN COMMUNICATIONS SERVICES, INC. 6744 VALDOSTA GA
2002-08-06 229-357 2XXX3XXX9XXX · 2 holders which blocks → SOUTHERN COMMUNICATIONS SERVICES, INC. 6744 ALBANY GA
2002-08-06 402-716 0–9 XXXwhole prefix which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - NE 7144 OMAHA NE
2002-08-06 479-899 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → AT&T - LOCAL 7421 ROGERS AR
2002-08-06 601-564 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MS 5178 FOREST MS
2002-08-06 601-574 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MS 5178 HAZLEHURST MS
2002-08-06 601-596 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → CELLULAR SOUTH, INC. 6581 HATTIESBG MS
2002-08-06 601-623 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TELEPAK NETWORKS, INC. - MS 5278 HAZLEHURST MS
2002-08-06 601-624 not yet reported which blocks → CELLULAR SOUTH, INC. 6581 JACKSON MS
2002-08-06 603-568 0–9 XXXwhole prefix which blocks → BELL ATLANTIC MOBILE, INC 6386 CONCORD NH
2002-08-06 706-763 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 COLUMBUS GA
2002-08-06 706-765 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J ATHENS GA
2002-08-06 773-870 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CHICGOZN03 IL
2002-08-06 808-748 1XXX8XXX9XXX · 2 holders which blocks → LEVEL 3 TELECOM OF HAWAII, LP - HI 8297 HONOLULU HI
2002-08-06 810-282 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → MICHIGAN BELL TEL CO 9323 FLINT MI
2002-08-06 814-657 7XXX8XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 OIL CITY PA
2002-08-06 912-257 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → SOUTHERN COMMUNICATIONS SERVICES, INC. 6744 SAVANNAH GA
2002-08-06 978-886 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 ANDOVER MA
2002-08-05 229-339 2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 TIFTON GA
2002-08-05 352-949 6XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CHIEFLAND FL
2002-08-05 479-831 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FORT SMITH AR
2002-08-05 509-589 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 NEWPORT WA
2002-08-05 574-261 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 SOUTH BEND IN
2002-08-05 706-775 8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J GREENVILLE GA
2002-08-05 715-965 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 MEDFORD WI
2002-08-05 715-966 none assigned yet which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 6508 TOMAHAWK WI
2002-08-05 765-267 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 CRAWFODSVL IN
2002-08-05 765-586 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAFAYETTE IN
2002-08-05 765-722 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 9 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 YORKTOWN IN
2002-08-05 765-725 1XXX2XXX3XXX4XXX5XXX6XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 FOUNTAINCY IN
2002-08-05 765-753 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 RUSSIAVL IN
2002-08-05 802-552 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - VT 9450 MONTPELIER VT
2002-08-05 812-690 2XXX3XXX4XXX5XXX6XXX8XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MONROECITY IN
2002-08-05 812-691 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 RILEY IN
2002-08-05 812-703 1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 7 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 EDINBURGH IN
2002-08-05 812-720 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NASHVILLE IN
2002-08-05 830-237 none assigned yet which blocks → METROPCS, INC. 5562 NEWBRANFLS TX
2002-08-05 850-541 0XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → POWERTEL JACKSONVILLE LICENSES, INC. 7472 PANAMACITY FL
2002-08-05 850-546 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J CRESTVIEW FL
2002-08-05 850-549 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J PENSACOLA FL
2002-08-05 863-664 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 SEBRING FL
2002-08-05 903-449 0XXX2XXX3XXX4XXX5XXX · 2 holders which blocks → METROPCS, INC. 5562 BONHAM TX
2002-08-05 912-246 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 VIDALIA GA
2002-08-05 920-421 6XXX which blocks → NEW CELL DBA CELLCOM 6692 BAILEYSHBR WI
2002-08-05 940-799 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TX 6114 DECATUR TX
2002-08-05 989-980 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SAGINAW MI
2002-08-02 551-655 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 JERSEYCITY NJ
2002-08-02 585-969 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 PERRY NY
2002-08-02 780-881 not yet reported which blocks → TELUS Mobility 8301 Fort McMurray —
2002-08-02 905-364 not yet reported which blocks → Zayo Canada Inc. 8304 Malton —

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.