NumberResearch Membership · Data 09/22/2026

Recent prefix assignments

354 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/22/2026

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
NEW CINGULAR WIRELESS PCS, LLC - IL 28
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - DC 26
ONVOY, LLC - NJ 20
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
2002-03-06 502-229 6XXX7XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 FRANKFORT KY
2002-03-06 502-251 0–9 XXXall 10 · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - KY 4369 MTWASHIGTN KY
2002-03-06 502-281 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - KY 4369 SHEPHEDSVL KY
2002-03-06 551-990 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NJ
2002-03-06 573-355 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MO 4932 COLUMBIA MO
2002-03-06 623-377 4XXX7XXX9XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ
2002-03-06 740-233 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OH 4863 GAMBIER OH
2002-03-06 765-505 3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 6725 CLINTON IN
2002-03-06 814-348 0XXX1XXX2XXX4XXX7XXX8XXX · 5 holders which blocks → COMCAST IP PHONE, LLC 318J EVERETT PA
2002-03-06 848-990 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NJ
2002-03-06 862-990 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NJ
2002-03-06 908-642 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 SOMERVILLE NJ
2002-03-06 985-231 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - LA 3232 MANDEVILLE LA
2002-03-05 325-868 2XXX3XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → T-MOBILE USA, INC. 6529 SNYDER TX
2002-03-05 325-933 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → METROPCS, INC. 5562 SWEETWATER TX
2002-03-05 352-418 0–9 XXXall 10 · 6 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BUSHNELL FL
2002-03-05 352-419 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - FL 4802 INVERNESS FL
2002-03-05 402-802 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NE 3233 LINCOLN NE
2002-03-05 423-426 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 LIMESTONE TN
2002-03-05 701-499 8XXX which blocks → ONVOY, LLC - ND 452F FARGO ND
2002-03-05 701-866 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - ND 6568 FARGO ND
2002-03-05 704-526 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 TELECOM OF NORTH CAROLINA, LP - NC 7858 CHARLOTTE NC
2002-03-05 774-247 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - MA 990E BUZZARDSBY MA
2002-03-05 845-742 none assigned yet which blocks → METROPCS, INC. 5562 NEWBURGH NY
2002-03-05 863-473 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - FL 4802 WAUCHULA FL
2002-03-05 903-258 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 6506 TYLER TX
2002-03-04 205-352 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - AL 5255 LEEDS AL
2002-03-04 228-591 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MS 5178 VANCLEAVE MS
2002-03-04 334-559 not yet reported which blocks → POWERTEL BIRMINGHAM LICENSES, INC. 7475 OPELIKA AL
2002-03-04 507-552 none assigned yet which blocks → ONVOY, LLC - MN 184D ALBERT LEA MN
2002-03-04 513-292 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 MIDDLETOWN OH
2002-03-04 720-628 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 DENVER CO
2002-03-04 720-629 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 DENVER CO
2002-03-04 757-749 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NRFOLKZON2 VA
2002-03-04 803-383 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 DENMARK SC
2002-03-04 812-603 6XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 COLUMBUS IN
2002-03-04 812-606 8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BLOOMINGTN IN
2002-03-04 901-287 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2002-03-04 901-288 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MEMPHIS TN
2002-03-04 910-549 2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → SUNCOM DBA T-MOBILE USA 8645 ELIZABTHTN NC
2002-03-01 207-952 3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 CALAIS ME
2002-03-01 414-646 not yet reported which blocks → WISCONSIN BELL INC 9327 MILWAUKZN1 WI
2002-03-01 478-258 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 MACON GA
2002-03-01 615-658 0–9 XXXwhole prefix which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TN 7977 NASHVILLE TN
2002-03-01 678-961 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J ATLANTA SO GA
2002-03-01 678-964 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J CONYERS GA
2002-03-01 678-967 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J GRIFFIN GA
2002-03-01 715-598 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WI 5489 EAU CLAIRE WI
2002-03-01 731-223 1XXX2XXX4XXX5XXX6XXX8XXX · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 6673 SO FULTON TN
2002-03-01 864-538 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - SC 5258 GREENWOOD SC

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/22/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.