NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

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 213
PACIFIC BELL 138
T-MOBILE USA, INC. 120
ONVOY, LLC - CA 65
NEW CINGULAR WIRELESS PCS, LLC 58
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 44
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
2020-03-27 213-655 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H LSAN DA 01 CA
2020-03-25 213-469 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 LSAN DA 04 CA
2020-03-25 213-566 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H LSAN DA 11 CA
2020-03-25 213-755 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H LSAN DA 08 CA
2020-03-05 213-474 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 LSAN DA 01 CA
2020-02-05 213-414 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 LSAN DA 07 CA
2019-12-30 213-933 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H LSAN DA 06 CA
2019-11-26 213-513 0–9 XXXall 10 · 5 holders which blocks → VONAGE AMERICA LLC 197D LSAN DA 10 CA
2019-11-15 213-750 not yet reported which blocks → RIGHT CALL LLC 365J LSAN DA 11 CA
2019-11-15 213-780 not yet reported which blocks → RIGHT CALL LLC 365J LSAN DA 12 CA
2019-11-15 213-790 not yet reported which blocks → RIGHT CALL LLC 365J LSAN DA 13 CA
2019-11-15 213-850 not yet reported which blocks → RIGHT CALL LLC 365J LSAN DA 14 CA
2019-11-12 213-450 not yet reported which blocks → RIGHT CALL LLC 365J LSAN DA 02 CA
2019-11-12 213-490 not yet reported which blocks → RIGHT CALL LLC 365J LSAN DA 03 CA
2019-11-12 213-525 not yet reported which blocks → RIGHT CALL LLC 365J LSAN DA 04 CA
2019-11-12 213-530 not yet reported which blocks → RIGHT CALL LLC 365J LSAN DA 05 CA
2019-11-12 213-535 not yet reported which blocks → RIGHT CALL LLC 365J LSAN DA 06 CA
2019-11-12 213-540 not yet reported which blocks → RIGHT CALL LLC 365J LSAN DA 07 CA
2019-11-12 213-560 not yet reported which blocks → RIGHT CALL LLC 365J LSAN DA 08 CA
2019-11-12 213-690 not yet reported which blocks → RIGHT CALL LLC 365J LSAN DA 09 CA
2019-11-12 213-730 not yet reported which blocks → RIGHT CALL LLC 365J LSAN DA 10 CA
2019-11-08 213-468 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 LSAN DA 13 CA
2019-10-16 213-390 not yet reported which blocks → RIGHT CALL LLC 365J LSAN DA 01 CA
2019-09-30 213-397 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 LSAN DA 09 CA
2019-09-30 213-466 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 LSAN DA 05 CA
2019-09-30 213-475 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 MONTEBELLO CA
2019-09-27 213-464 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 LSAN DA 12 CA
2019-08-07 213-855 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H LSAN DA 10 CA
2019-06-04 213-758 0–9 XXXall 10 · 6 holders which blocks → FRACTEL, LLC 965H LSAN DA 02 CA
2019-05-21 213-371 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 03 CA
2019-05-20 213-766 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H LSAN DA 07 CA
2019-05-06 213-462 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 LSAN DA 01 CA
2019-03-27 213-461 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 09 CA
2019-03-19 213-459 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 LSAN DA 01 CA
2019-03-19 213-577 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H LSAN DA 04 CA
2019-02-01 213-732 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H LSAN DA 12 CA
2019-02-01 213-866 0–9 XXXall 10 · 2 holders which blocks → FRACTEL, LLC 965H LSAN DA 03 CA
2019-01-25 213-588 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H LSAN DA 14 CA
2019-01-25 213-877 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H LSAN DA 09 CA
2019-01-15 213-451 0–9 XXXall 10 · 6 holders which blocks → METROPCS NETWORKS, LLC 899D LSAN DA 13 CA
2018-12-12 213-409 0–9 XXXall 10 · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 LSAN DA 01 CA
2018-12-04 213-460 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - CA 649C LSAN DA 06 CA
2018-11-26 213-370 0–9 XXXall 10 · 3 holders which blocks → VONAGE AMERICA LLC 197D LSAN DA 01 CA
2018-07-26 213-396 not yet reported which blocks → SHELCOMM 0051 LSAN DA 02 CA
2018-04-19 213-320 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 01 CA
2018-03-23 213-433 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 10 CA
2018-03-14 213-677 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 07 CA
2018-01-25 213-476 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 LSAN DA 01 CA
2018-01-23 213-340 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - CA 649C LSAN DA 10 CA
2018-01-10 213-770 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - CA 649C LSAN DA 07 CA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.