NumberResearch Membership · Data 09/24/2026

Recent prefix assignments

349 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/24/2026

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 31
ONVOY, LLC - CA 27
NEW CINGULAR WIRELESS PCS, LLC - IL 27
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
2012-08-22 249-223 not yet reported which blocks → TELUS Integrated Communications 2782 Moonstone —
2012-08-22 334-609 0–9 XXXall 10 · 6 holders which blocks → MCC TELEPHONY LLC 593K THOMASVL AL
2012-08-22 469-320 0–9 XXXall 10 · 5 holders which blocks → PAETEC ITEL, LLC 829J DALLAS TX
2012-08-22 581-319 not yet reported which blocks → Distributel 083E Quebec —
2012-08-22 613-981 not yet reported which blocks → Videotron Ltd. 787G Ottawa-Hull —
2012-08-22 778-290 not yet reported which blocks → Bell West Inc. 2933 Whalley —
2012-08-22 902-717 not yet reported which blocks → Bell Mobility Aliant 329A Halifax —
2012-08-21 228-231 0–9 XXXall 10 · 3 holders which blocks → MCC TELEPHONY LLC 593K BAYSTLOUIS MS
2012-08-21 267-353 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 PHLDLPHZN2 PA
2012-08-21 281-624 0–9 XXXall 10 · 4 holders which blocks → COMCAST IP PHONE, LLC 318J BAMMEL TX
2012-08-21 401-483 0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J BRISTOL RI
2012-08-21 602-362 0–9 XXXwhole prefix which blocks → PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F PHOENIX AZ
2012-08-21 602-666 0–9 XXXwhole prefix which blocks → PEERLESS NETWORK OF ARIZONA, LLC - AZ 579F PHOENIX AZ
2012-08-21 608-380 0XXX1XXX6XXX7XXX · 4 holders which blocks → MCC TELEPHONY OF THE MIDWEST, LLC - WI 983F PRARIDCHIN WI
2012-08-21 608-771 0–9 XXXwhole prefix which blocks → CHARTER IP ENABLED SERVICES, LLC 792K VERONA WI
2012-08-21 734-580 0–9 XXXall 10 · 3 holders which blocks → COMCAST IP PHONE, LLC 318J DEXTER MI
2012-08-20 201-552 0–9 XXXall 10 · 7 holders which blocks → CSC VOICE, LLC 612K UNION CITY NJ
2012-08-20 256-530 0–9 XXXall 10 · 5 holders which blocks → DOVETEL COMMUNICATIONS LLC - AL 799G ANNISTON AL
2012-08-20 256-540 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → DOVETEL COMMUNICATIONS LLC - AL 799G WEDOWEE AL
2012-08-20 337-400 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ABBEVILLE LA
2012-08-20 404-740 0–9 XXXwhole prefix which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA GA
2012-08-20 470-246 0–9 XXXall 10 · 2 holders which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA NE GA
2012-08-20 470-257 0–9 XXXwhole prefix which blocks → POWERTEL ATLANTA LICENSES, INC. 7473 ATLANTA GA
2012-08-20 502-888 0–9 XXXall 10 · 4 holders which blocks → CORETEL KENTUCKY, INC. - KY 480F LOUISVILLE KY
2012-08-20 631-545 0–9 XXXall 10 · 2 holders which blocks → PEERLESS NETWORK OF NEW YORK, LLC - NY 155E AMITYVILLE NY
2012-08-20 646-635 0–9 XXXwhole prefix which blocks → VERIZON NEW YORK, INC. 9104 NWYRCYZN01 NY
2012-08-20 646-636 0–9 XXXwhole prefix which blocks → VERIZON NEW YORK, INC. 9104 NWYRCYZN01 NY
2012-08-20 646-741 0–9 XXXwhole prefix which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E NWYRCYZN01 NY
2012-08-20 714-462 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 GARDEN GRV CA
2012-08-20 714-587 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HUNTITNBCH CA
2012-08-20 774-337 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 5 holders which blocks → PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 268F BREWSTER MA
2012-08-20 917-633 0–9 XXXwhole prefix which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E NWYRCYZN14 NY
2012-08-17 315-840 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E JORDAN NY
2012-08-17 405-479 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 OKLA CITY OK
2012-08-17 405-546 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 OKLA CITY OK
2012-08-17 405-673 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 OKLA CITY OK
2012-08-17 405-679 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OK 5813 OKLA CITY OK
2012-08-17 438-495 not yet reported which blocks → Videotron Ltd. 328F Montreal —
2012-08-17 505-257 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - NM 123F LOS ALAMOS NM
2012-08-17 510-359 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HAYWARD CA
2012-08-17 510-398 0–9 XXXall 10 · 8 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E HAYWARD CA
2012-08-17 646-751 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC- NY 384C NWYRCYZN01 NY
2012-08-17 717-472 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 6392 YORK PA
2012-08-17 819-830 not yet reported which blocks → Fido Solutions Inc. 5643 Amos —
2012-08-17 819-859 not yet reported which blocks → Fido Solutions Inc. 5643 Val-D'Or —
2012-08-17 819-880 not yet reported which blocks → Fido Solutions Inc. 5643 Rouyn-Noranda —
2012-08-17 864-516 0–9 XXXall 10 · 5 holders which blocks → SOUTH CAROLINA NET, INC. - SC 1784 GREENVILLE SC
2012-08-17 901-402 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - TN 124F MOSCOW TN
2012-08-17 917-636 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY 6959 NWYRCYZN14 NY
2012-08-17 917-765 0–9 XXXwhole prefix which blocks → BANDWIDTH.COM CLEC, LLC - NY 997E NWYRCYZN06 NY

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/24/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.