NumberResearch Membership · Data 09/26/2026

Recent prefix assignments

360 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/26/2026

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 28
ONVOY, LLC - CA 26
NEW CINGULAR WIRELESS PCS, LLC - IL 26
Rogers Communications Canada Inc. (Wireless) 23
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
2012-03-19 579-229 not yet reported which blocks → TELUS Quebec 2243 Beloeil —
2012-03-19 581-221 not yet reported which blocks → Iristel Inc. 154E Chicoutimi —
2012-03-19 609-603 not yet reported which blocks → CORETEL NEW JERSEY, INC. - NJ 482F PLEASANTVL NJ
2012-03-19 612-323 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TWINCITIES MN
2012-03-19 702-758 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 LAS VEGAS NV
2012-03-19 719-368 0–9 XXXall 10 · 6 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 COLORDOSPG CO
2012-03-19 808-365 0–9 XXXall 10 · 5 holders which blocks → HAWAIIAN TELCOM, INC. - HI 3100 HILO HI
2012-03-19 870-301 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC - IL 6534 AUGUSTA AR
2012-03-19 937-607 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 DAYTON OH
2012-03-16 408-664 0–9 XXXall 10 · 5 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 SUNNYVALE CA
2012-03-16 412-463 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PTTSBGZON1 PA
2012-03-16 412-515 0–9 XXXall 10 · 8 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 PTTSBGZON1 PA
2012-03-16 631-490 0–9 XXXall 10 · 7 holders which blocks → TELENGY L.L.C. - NY 473G ATLANTIC NY
2012-03-16 631-502 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → TELENGY L.L.C. - NY 473G JAMESPORT NY
2012-03-16 631-542 0–9 XXXall 10 · 9 holders which blocks → TELENGY L.L.C. - NY 473G RONKONKOMA NY
2012-03-16 646-664 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF NEW YORK, LLC - NY 155E NWYRCYZN01 NY
2012-03-16 702-720 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 LAS VEGAS NV
2012-03-16 705-486 not yet reported which blocks → Fibernetics Corporation 464D Peterborough —
2012-03-16 714-509 0–9 XXXall 10 · 4 holders which blocks → PAETEC ITEL, LLC 829J ORANGE CA
2012-03-16 813-360 0–9 XXXall 10 · 2 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 TAMPACEN FL
2012-03-16 909-341 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → TWC IP ENABLED SERVICES, LLC 793K RIALTO CA
2012-03-16 919-243 0–9 XXXall 10 · 6 holders which blocks → METROPCS, INC. 5562 CLAYTON NC
2012-03-16 936-207 0–9 XXXall 10 · 3 holders which blocks → AERIAL COMMUNICATIONS, INC. 6701 CONROE TX
2012-03-15 289-378 not yet reported which blocks → Fibernetics Corporation 464D Markham —
2012-03-15 289-379 not yet reported which blocks → Fibernetics Corporation 464D Richmond Hill —
2012-03-15 404-205 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA GA
2012-03-15 404-445 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA GA
2012-03-15 404-615 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA GA
2012-03-15 404-620 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA GA
2012-03-15 423-530 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 KINGSPORT TN
2012-03-15 440-217 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 HILLCREST OH
2012-03-15 470-235 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA NE GA
2012-03-15 470-255 0–9 XXXall 10 · 3 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA NE GA
2012-03-15 470-258 0–9 XXXall 10 · 3 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA NE GA
2012-03-15 470-314 0–9 XXXall 10 · 2 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA NE GA
2012-03-15 470-539 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA NE GA
2012-03-15 470-774 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA 6540 ATLANTA NE GA
2012-03-15 470-848 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 ATLANTA NE GA
2012-03-15 614-703 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 6025 HILLIARD OH
2012-03-15 705-371 not yet reported which blocks → Bragg Communications Inc. 4878 Kapuskasing —
2012-03-15 705-376 not yet reported which blocks → Bragg Communications Inc. 4878 Fauquier —
2012-03-15 705-381 not yet reported which blocks → Bragg Communications Inc. 4878 Moonbeam —
2012-03-15 705-390 not yet reported which blocks → Bragg Communications Inc. 4878 Opasatika —
2012-03-15 778-308 not yet reported which blocks → Fibernetics Corporation 464D Richmond —
2012-03-15 778-358 not yet reported which blocks → Fibernetics Corporation 464D New Westminster —
2012-03-15 778-508 not yet reported which blocks → Fibernetics Corporation 464D West Vancouver —
2012-03-15 779-201 0–9 XXXall 10 · 7 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 6333 LA SALLE IL
2012-03-15 786-510 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL 6502 MIAMI FL
2012-03-15 902-360 not yet reported which blocks → Bragg Communications Inc. 4878 Rusticoville —
2012-03-14 205-704 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL 6804 BIRMINGHAM AL

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.