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
2002-09-06 937-618 2XXX3XXX4XXX5XXX7XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GEORGETOWN OH
2002-09-06 970-329 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CO 6118 CRAIG CO
2002-09-05 229-232 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 VALDOSTA GA
2002-09-05 252-392 3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NC 3235 AURORA NC
2002-09-05 330-610 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 YOUNGSTOWN OH
2002-09-05 386-688 8XXX which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 LIVE OAK FL
2002-09-05 478-772 3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → METROPCS, INC. 5562 DUBLIN GA
2002-09-05 478-775 4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 MACON GA
2002-09-05 478-776 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 MILLEDGEVL GA
2002-09-05 478-777 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 PERRY GA
2002-09-05 502-554 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LOUISVILLE KY
2002-09-05 505-617 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 LAS VEGAS NM
2002-09-05 567-249 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 TOLEDO OH
2002-09-05 706-502 0–9 XXXall 10 · 3 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ELLIJAY GA
2002-09-05 706-509 0–9 XXXall 10 · 4 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ROME GA
2002-09-05 706-758 not yet reported which blocks → KNOLOGY OF THE VALLEY, INC. 0371 WEST POINT GA
2002-09-05 719-214 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 PUEBLO CO
2002-09-05 785-707 5XXX9XXX · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - KS 2240 WAKEFIELD KS
2002-09-05 937-621 5XXX6XXX7XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GREENVILLE OH
2002-09-05 973-512 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 LAKEMOHAWK NJ
2002-09-05 973-552 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 8 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NJ 4804 MONTAGUE NJ
2002-09-05 989-464 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 6003 ALPENA MI
2002-09-04 541-399 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 HOOD RIVER OR
2002-09-04 571-221 none assigned yet which blocks → METROPCS, INC. 5562 WSNGTNZN17 VA
2002-09-04 706-755 2XXX9XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 AUGUSTA GA
2002-09-04 712-228 not yet reported which blocks → NORTHWEST IOWA TELEPHONE, LLC 1260 SERGENTBLF IA
2002-09-04 731-332 2XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MARTIN TN
2002-09-04 787-667 none assigned yet which blocks → SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2002-09-04 850-282 not yet reported which blocks → CONSOLIDATED COMMUNICATIONS OF FLORIDA COMPANY 0291 TYNDALLAFB FL
2002-09-03 231-907 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LUDINGTON MI
2002-09-03 517-677 0XXX4XXX5XXX7XXX which blocks → OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 2964 COLDWATER MI
2002-09-03 815-975 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BELVIDERE IL
2002-09-03 856-889 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 6391 WILLIAMSTN NJ
2002-09-03 860-268 none assigned yet which blocks → METROPCS, INC. 5562 MANCHESTER CT
2002-09-03 860-538 none assigned yet which blocks → OMNIPOINT COMMUNICATIONS, INC. - CT 6624 NEWBRITAIN CT
2002-09-03 970-557 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CO 6118 GRANBY CO
2002-08-30 224-730 3XXX4XXX5XXX6XXX8XXX · 2 holders which blocks → T-MOBILE USA, INC. 6529 ZION IL
2002-08-30 231-432 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 NORTHPORT MI
2002-08-30 231-640 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 LAKE ANN MI
2002-08-30 231-651 1XXX2XXX3XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BEULAH MI
2002-08-30 231-667 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MARION MI
2002-08-30 231-676 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BELLAIRE MI
2002-08-30 231-729 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 IRONS MI
2002-08-30 231-794 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 MANISTEE MI
2002-08-30 231-835 1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 GLEN LAKE MI
2002-08-30 231-866 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 SUTTONSBAY MI
2002-08-30 231-912 1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 REED CITY MI
2002-08-30 231-970 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 BEAR LAKE MI
2002-08-30 407-334 0–9 XXXwhole prefix which blocks → AERIAL COMMUNICATIONS, INC. 6701 KISSIMMEE FL
2002-08-30 434-322 0–9 XXXall 10 · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - VA 8825 ALBERTA VA

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.