NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

0 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, all time — NPA 669
T-MOBILE USA, INC. 45
ONVOY, LLC - CA 43
FRACTEL, LLC 30
NEW CINGULAR WIRELESS PCS, LLC 21
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 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
2014-09-09 669-245 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNJS SOUTH CA
2014-09-03 669-243 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 SNJS WEST CA
2014-09-02 669-220 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 SNJS WEST CA
2014-07-28 669-238 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E SNJS NORTH CA
2014-07-14 669-242 0–9 XXXall 10 · 7 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNJS WEST CA
2014-06-30 669-237 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 CAMPBELL CA
2014-05-28 669-236 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNJS WEST CA
2014-04-04 669-235 0–9 XXXall 10 · 4 holders which blocks → AT&T ENTERPRISES, LLC 516C SNJS NORTH CA
2014-03-24 669-234 0–9 XXXall 10 · 8 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 SNJS SOUTH CA
2014-03-24 669-342 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 SNJS WEST CA
2014-03-03 669-233 0–9 XXXall 10 · 7 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 LOS GATOS CA
2014-02-28 669-228 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E SAN MARTIN CA
2014-02-28 669-232 0–9 XXXall 10 · 7 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E LOS GATOS CA
2014-01-24 669-226 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 SNJS NORTH CA
2013-12-02 669-225 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNJS WEST CA
2013-12-02 669-231 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNJS WEST CA
2013-12-02 669-253 0–9 XXXall 10 · 8 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 MORGANHILL CA
2013-11-11 669-224 0–9 XXXall 10 · 8 holders which blocks → T-MOBILE USA, INC. 6529 SUNNYVALE CA
2013-10-10 669-221 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LOS GATOS CA
2013-05-14 669-227 0–9 XXXwhole prefix which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 SNJS WEST CA
2013-03-04 669-721 0–9 XXXall 10 · 2 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SUNNYVALE CA
2012-11-02 669-223 0–9 XXXall 10 · 4 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 SNJS WEST CA
— 669-200 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - CA 649C SNJS SOUTH CA
— 669-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX CA
— 669-222 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - CA 649C CAMPBELL CA
— 669-271 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LOS GATOS CA
— 669-300 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - CA 649C CAMPBELL CA
— 669-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX CA
— 669-333 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - CA 649C SNJS SOUTH CA
— 669-400 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - CA 649C SNJS SOUTH CA
— 669-408 not yet reported which blocks → CA
— 669-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX CA
— 669-444 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - CA 649C SNJS WEST CA
— 669-500 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - CA 649C GILROY CA
— 669-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX CA
— 669-555 not yet reported which blocks → MULTIPLE OCN LISTING MULT DIR ASST CA
— 669-600 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC - CA 649C SUNNYVALE CA
— 669-611 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX CA
— 669-666 0–9 XXXall 10 · 7 holders which blocks → ONVOY, LLC - CA 649C SNJS WEST CA
— 669-700 not yet reported which blocks → CA
— 669-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX CA
— 669-777 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - CA 649C SUNNYVALE CA
— 669-800 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - CA 649C SNJS WEST CA
— 669-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX CA
— 669-888 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - CA 649C MORGANHILL CA
— 669-900 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - CA 649C SNJS NORTH CA
— 669-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX CA
— 669-950 not yet reported which blocks → CA
— 669-958 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX CA
— 669-959 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX CA

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.