NumberResearch Membership · Data 09/27/2026

Recent prefix assignments

334 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/27/2026

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 26
Rogers Communications Canada Inc. (Wireless) 23
NEW CINGULAR WIRELESS PCS, LLC - IL 22
ONVOY, LLC - CA 19
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
— 336-987 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GREENSBORO NC
— 336-988 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 GREENSBORO NC
— 336-989 6XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HIGH POINT NC
— 336-991 5XXX6XXX7XXX8XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 HIGH POINT NC
— 336-992 not yet reported which blocks → BRIGHTSPEED OF EASTERN NORTH CAROLINA, LLC 0470 KERNERSVL NC
— 336-993 not yet reported which blocks → BRIGHTSPEED OF EASTERN NORTH CAROLINA, LLC 0470 KERNERSVL NC
— 336-994 not yet reported which blocks → BRIGHTSPEED OF NORTH CAROLINA, LLC 0471 QUAKER GAP NC
— 336-995 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 WINSTN SAL NC
— 336-996 not yet reported which blocks → BRIGHTSPEED OF EASTERN NORTH CAROLINA, LLC 0470 KERNERSVL NC
— 336-997 9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 WINSTN SAL NC
— 336-998 not yet reported which blocks → YADKIN VALLEY TEL. MEMBERSHIP CORP. 0511 ADVANCE NC
— 337-201 2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → METROPCS, INC. 5562 NEW IBERIA LA
— 337-202 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J DE RIDDER LA
— 337-204 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 XXXXXXXXXX LA
— 337-205 1XXX3XXX5XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - LA 3232 LAFAYETTE LA
— 337-206 not yet reported which blocks → ADVANCED TEL., INC. - LA 8839 OPELOUSAS LA
— 337-207 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 LAFAYETTE LA
— 337-208 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 LEESVILLE LA
— 337-209 not yet reported which blocks → ADVANCED TEL., INC. - LA 8839 NEW IBERIA LA
— 337-210 5XXX6XXX7XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - LA 3232 LAFAYETTE LA
— 337-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX LA
— 337-212 none assigned yet which blocks → METROPCS, INC. 5562 LAFAYETTE LA
— 337-214 3XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - LA 3232 LK CHARLES LA
— 337-215 5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → METROPCS, INC. 5562 SULPHUR LA
— 337-216 1XXX5XXX8XXX · 3 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 LAFAYETTE LA
— 337-217 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 LK CHARLES LA
— 337-219 not yet reported which blocks → SPOK, INC. 6630 LK CHARLES LA
— 337-220 0XXX1XXX4XXX7XXX · 4 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J TURKEY CRK LA
— 337-224 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 LAFAYETTE LA
— 337-225 not yet reported which blocks → KAPLAN TEL. CO. 0432 KAPLAN LA
— 337-228 not yet reported which blocks → BRIGHTSPEED OF LOUISIANA, LLC 0434 HENDERSON LA
— 337-229 1XXX5XXX9XXX · 3 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 LOREAUVL LA
— 337-230 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 LAFAYETTE LA
— 337-231 8XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 LAFAYETTE LA
— 337-232 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 LAFAYETTE LA
— 337-233 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 LAFAYETTE LA
— 337-234 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 LAFAYETTE LA
— 337-235 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 LAFAYETTE LA
— 337-236 0XXX1XXX2XXX4XXX · 3 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 LAFAYETTE LA
— 337-237 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 LAFAYETTE LA
— 337-238 none assigned yet which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 LEESVILLE LA
— 337-239 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 LEESVILLE LA
— 337-250 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CROWLEY LA
— 337-253 not yet reported which blocks → COMCAST IP PHONE, LLC 318J NEW IBERIA LA
— 337-260 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 XXXXXXXXXX LA
— 337-261 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 LAFAYETTE LA
— 337-262 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 LAFAYETTE LA
— 337-264 2XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 LAFAYETTE LA
— 337-265 1XXX4XXX5XXX9XXX · 3 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 LAFAYETTE LA
— 337-266 0XXX3XXX which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 LAFAYETTE LA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/27/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.