NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

338 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
NEW CINGULAR WIRELESS PCS, LLC - IL 28
ONVOY, LLC - CA 26
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
2002-10-31 330-741 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 6 holders which blocks → T-MOBILE USA, INC. 6529 BRUNSWICK OH
2002-10-31 340-244 not yet reported which blocks → LIBERTY MOBILE USVI INC. 638J CHTAMSTTHS VI
2002-10-31 352-556 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J WEEKICHSPG FL
2002-10-31 512-564 0–9 XXXall 10 · 6 holders which blocks → SOUTHWESTERN BELL 9533 LAMPASAS TX
2002-10-31 601-501 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MS 5178 VICKSBURG MS
2002-10-31 601-620 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - MS 5178 HATTIESBG MS
2002-10-31 601-675 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → TELEPAK NETWORKS, INC. - MS 5278 MENDENHALL MS
2002-10-31 662-350 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → TELEPORT COMMUNICATIONS AMERICA MS - LLC 458C TUPELO MS
2002-10-31 702-372 not yet reported which blocks → T-MOBILE USA, INC. 6529 LAS VEGAS NV
2002-10-31 715-330 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → T-MOBILE USA, INC. 6529 MARINETTE WI
2002-10-31 787-586 none assigned yet which blocks → METROPCS, INC. 5562 CAGUAS PR
2002-10-31 808-728 not yet reported which blocks → T-MOBILE USA, INC. 6529 HONOLULU HI
2002-10-31 919-704 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 PITTSBORO NC
2002-10-31 920-552 1XXX2XXX5XXX6XXX7XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - WI 5489 OOSTBURG WI
2002-10-30 231-534 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → AT&T - LOCAL 7421 TRAVERSECY MI
2002-10-30 515-395 4XXX5XXX9XXX which blocks → ALGONA MUNICIPAL UTILITIES - IA 9900 ALGONA IA
2002-10-30 618-218 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 BENTON IL
2002-10-30 618-410 none assigned yet which blocks → T-MOBILE USA, INC. 6529 COLLINSVL IL
2002-10-30 618-508 0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - IL 6115 FLORA IL
2002-10-30 618-697 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 ANNA IL
2002-10-30 618-889 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 MARION IL
2002-10-30 772-812 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 PTST LUCIE FL
2002-10-30 781-901 none assigned yet which blocks → METROPCS, INC. 5562 WEYMOUTH MA
2002-10-30 787-587 none assigned yet which blocks → SUNCOM DBA T-MOBILE USA 8645 SANTURCE PR
2002-10-30 817-440 3XXX4XXX6XXX7XXX9XXX · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ATLAS TX
2002-10-30 828-528 1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - NC 3235 NEWLAND NC
2002-10-30 830-322 0XXX2XXX3XXX5XXX7XXX8XXX · 4 holders which blocks → T-MOBILE USA, INC. 6529 CARRIZOSPG TX
2002-10-30 903-370 2XXX3XXX · 2 holders which blocks → T-MOBILE USA, INC. 6529 WASKOM TX
2002-10-30 928-205 not yet reported which blocks → SMITH BAGLEY INC. DBA CELLULAR ONE OF NE ARIZONA 4146 SHOW LOW AZ
2002-10-30 928-206 not yet reported which blocks → SMITH BAGLEY INC. DBA CELLULAR ONE OF NE ARIZONA 4146 TUBA CITY AZ
2002-10-30 928-207 not yet reported which blocks → SMITH BAGLEY INC. DBA CELLULAR ONE OF NE ARIZONA 4146 SHOW LOW AZ
2002-10-29 336-486 2XXX3XXX6XXX8XXX · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 WINSTN SAL NC
2002-10-29 507-402 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 5816 ALBERT LEA MN
2002-10-29 507-431 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - MN 184D OWATONNA MN
2002-10-29 660-395 not yet reported which blocks → CHARITON VALLEY COMMUNICATIONS CORPORATION 250A MACON MO
2002-10-29 817-622 1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ARLINGTON TX
2002-10-29 848-466 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 RED BANK NJ
2002-10-29 848-467 0–9 XXXall 10 · 5 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 RAHWAY NJ
2002-10-29 848-468 0–9 XXXall 10 · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 MATAWAN NJ
2002-10-29 848-469 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 SPRINGLAKE NJ
2002-10-29 862-220 0–9 XXXall 10 · 2 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 BLOOMFIELD NJ
2002-10-29 862-224 0–9 XXXwhole prefix which blocks → OMNIPOINT COMMUNICATIONS, INC. - NJ 6623 ORANGE NJ
2002-10-29 864-756 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → PAETEC ITEL, LLC 829J WOODRUFF SC
2002-10-29 864-757 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → PAETEC ITEL, LLC 829J SIMPSONVL SC
2002-10-29 919-441 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NC 6324 RALEIGH NC
2002-10-29 970-769 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 DURANGO CO
2002-10-28 347-244 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 NWYRCYZN06 NY
2002-10-28 402-544 not yet reported which blocks → QWEST CORPORATION 9631 OMAHA NE
2002-10-28 405-583 0–9 XXXall 10 · 6 holders which blocks → CHICKASAW TELECOMMUNICAIONS SERVICES, INC. 4630 MULHALL OK
2002-10-28 405-646 0–9 XXXall 10 · 6 holders which blocks → CHICKASAW TELECOMMUNICAIONS SERVICES, INC. 4630 CARNEY OK

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.