NumberResearch Membership · Data 09/23/2026

Recent prefix assignments

338 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/23/2026

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. 39
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - IL 27
NEW CINGULAR WIRELESS PCS, LLC - DC 26
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
2002-04-26 918-803 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OK 5257 PRYOR OK
2002-04-26 918-820 1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → T-MOBILE USA, INC. 6529 MCALESTER OK
2002-04-26 918-860 2XXX3XXX4XXX5XXX6XXX7XXX · 6 holders which blocks → T-MOBILE USA, INC. 6529 DEWEY OK
2002-04-26 918-873 1XXX3XXX6XXX7XXX · 2 holders which blocks → T-MOBILE USA, INC. 6529 CUSHING OK
2002-04-26 918-915 1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 VINITA OK
2002-04-25 229-299 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - GA 6116 ALBANY GA
2002-04-25 229-947 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - GA 6116 CORDELE GA
2002-04-25 251-221 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTH CENTRAL BELL TEL 9419 MOBILE AL
2002-04-25 251-233 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → ELISKA WIRELESS VENTURES SUBSIDIARY I, LLC 6916 FOLEY AL
2002-04-25 256-417 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AL 5255 HUNTSVILLE AL
2002-04-25 256-460 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AL 5255 RUSSELLVL AL
2002-04-25 256-712 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AL 5255 FLORENCE AL
2002-04-25 256-861 1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 4 holders which blocks → POWERTEL BIRMINGHAM LICENSES, INC. 7475 SYLACAUGA AL
2002-04-25 308-627 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 5807 KEARNEY NE
2002-04-25 404-246 not yet reported which blocks → METROPCS, INC. 5562 ATLANTA GA
2002-04-25 434-878 0XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - VA 8825 BRODNAX VA
2002-04-25 434-879 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - VA 8825 BURKEVILLE VA
2002-04-25 478-268 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - GA 6116 SWAINSBORO GA
2002-04-25 478-787 0XXX1XXX2XXX3XXX5XXX7XXX8XXX9XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - GA 6116 MACON GA
2002-04-25 503-459 1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 TELECOM OF OREGON, LLC - OR 7537 PORTLAND OR
2002-04-25 507-581 2XXX3XXX4XXX5XXX7XXX8XXX · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 NORTHFIELD MN
2002-04-25 517-612 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 JACKSON MI
2002-04-25 541-363 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 KLAMATHFLS OR
2002-04-25 662-504 1XXX3XXX6XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MS 5178 HOLLY SPG MS
2002-04-25 662-507 0XXX1XXX2XXX3XXX5XXX8XXX9XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MS 5178 NEW ALBANY MS
2002-04-25 662-545 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MS 5178 CLEVELAND MS
2002-04-25 662-546 0XXX1XXX2XXX5XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MS 5178 STARKVILLE MS
2002-04-25 662-553 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MS 5178 TUPELO MS
2002-04-25 662-554 0XXX1XXX2XXX3XXX5XXX7XXX8XXX9XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MS 5178 BOONEVILLE MS
2002-04-25 662-567 0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MS 5178 HOUSTON MS
2002-04-25 662-577 0XXX1XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MS 5178 INDIANOLA MS
2002-04-25 662-612 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MS 5178 SENATOBIA MS
2002-04-25 662-633 0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MS 5178 KOSCIUSKO MS
2002-04-25 662-640 1XXX2XXX3XXX5XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MS 5178 AMORY MS
2002-04-25 662-845 0XXX3XXX5XXX6XXX8XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MS 5178 WINONA MS
2002-04-25 706-659 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - GA 6116 CALHOUN GA
2002-04-25 706-955 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - GA 6116 AUGUSTA GA
2002-04-25 706-956 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - GA 6116 ROSSVILLE GA
2002-04-25 708-792 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IL 6115 PEOTONE IL
2002-04-25 731-327 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - TN 4806 MICHIE TN
2002-04-25 765-588 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IN 4803 LAFAYETTE IN
2002-04-25 785-635 none assigned yet which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 HAYS KS
2002-04-25 813-363 4XXX5XXX8XXX which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPACEN FL
2002-04-25 865-395 0XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J CLAXTON TN
2002-04-25 912-228 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - GA 6116 SAVANNAH GA
2002-04-24 217-841 none assigned yet which blocks → T-MOBILE USA, INC. 6529 CHAMPAURBN IL
2002-04-24 234-294 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → T-MOBILE USA, INC. 6529 GREENSBURG OH
2002-04-24 267-210 not yet reported which blocks → OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 6626 PHPHSBZN33 PA
2002-04-24 330-361 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → T-MOBILE USA, INC. 6529 NO CANTON OH
2002-04-24 435-553 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - UT 3231 BRIGHAM CY UT

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/23/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.