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 209
PACIFIC BELL 181
NEW CINGULAR WIRELESS PCS, LLC 128
ONVOY, LLC - CA 76
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 71
T-MOBILE USA, INC. 69
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
Clear Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2020-11-12 209-793 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 MERCED CA
2020-10-28 209-760 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 ANGELSCAMP CA
2020-10-16 209-741 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 ATWATER CA
2020-10-15 209-717 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 MANTECA CA
2020-10-08 209-697 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 JACKSON CA
2020-09-24 209-619 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 LOS BANOS CA
2020-09-22 209-778 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 TURLOCK CA
2020-09-22 209-792 0–9 XXXall 10 · 4 holders which blocks → COMCAST PHONE OF CALIFORNIA, LLC 394L STOCKTON CA
2020-09-22 209-859 0–9 XXXall 10 · 3 holders which blocks → COMCAST PHONE OF CALIFORNIA, LLC 394L MODESTO CA
2020-09-17 209-773 0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MOKELUMNHL CA
2020-09-08 209-698 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 MANTECA CA
2020-09-08 209-738 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 ANGELSCAMP CA
2020-09-08 209-739 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 MANTECA CA
2020-09-08 209-746 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 MERCED CA
2020-09-08 209-749 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 MERCED CA
2020-09-08 209-750 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 MODESTO CA
2020-09-08 209-771 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 MODESTO CA
2020-09-01 209-705 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 MANTECA CA
2020-09-01 209-716 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 ANGELSCAMP CA
2020-08-27 209-693 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 LODI CA
2020-08-21 209-692 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 SNRA MAIN CA
2020-08-18 209-687 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 STOCKTON CA
2020-08-14 209-703 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 TUOLUMNE CA
2020-08-05 209-506 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 MERCED CA
2020-07-21 209-799 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H MODESTO CA
2020-07-17 209-686 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 ANGELSCAMP CA
2020-07-09 209-539 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 MANTECA CA
2020-07-02 209-504 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 MERCED CA
2020-06-15 209-503 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LODI CA
2020-06-02 209-501 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 MODESTO CA
2020-05-28 209-685 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 STOCKTON CA
2020-05-22 209-699 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H TRACY CA
2020-04-24 209-673 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MANTECA CA
2020-04-01 209-429 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 GALT CA
2020-04-01 209-646 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 TURLOCK CA
2020-03-27 209-424 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MODESTO CA
2020-03-09 209-415 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 ANGELSCAMP CA
2020-02-13 209-414 0–9 XXXall 10 · 4 holders which blocks → CSC WIRELESS, LLC 425J STOCKTON CA
2020-02-10 209-413 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 MERCED CA
2019-12-24 209-412 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 MODESTO CA
2019-12-09 209-582 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 ATWATER CA
2019-11-18 209-562 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 ANGELSCAMP CA
2019-10-18 209-494 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 MODESTO CA
2019-10-03 209-510 0–9 XXXall 10 · 2 holders which blocks → ONVOY SPECTRUM, LLC 624H MANTECA CA
2019-10-03 209-660 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - CA 649C JACKSON CA
2019-10-02 209-399 0–9 XXXall 10 · 5 holders which blocks → HD CARRIER LLC 321J MANTECA CA
2019-08-08 209-655 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 WTFR MAIN CA
2019-07-01 209-630 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 JAMESTOWN CA
2019-05-28 209-540 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 SNRA MAIN CA
2019-03-18 209-618 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 MODESTO 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.