NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

2 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, last 30 days — NPA 650
ONVOY, LLC - CA 2
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
2021-08-23 650-613 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 PALO ALTO CA
2021-08-05 650-789 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H MT VIEW CA
2021-04-23 650-910 0–9 XXXall 10 · 2 holders which blocks → ONVOY, LLC - CA 649C SSNFRNCSCO CA
2021-02-01 650-586 0–9 XXXall 10 · 5 holders which blocks → TELNYX LLC 073H PALO ALTO CA
2021-01-29 650-582 0–9 XXXall 10 · 4 holders which blocks → TELNYX LLC 073H MT VIEW CA
2020-08-28 650-540 0–9 XXXall 10 · 3 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 SSNFRNCSCO CA
2020-08-25 650-744 0–9 XXXall 10 · 4 holders which blocks → FRACTEL, LLC 965H MT VIEW CA
2020-08-25 650-844 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H SAN MATEO CA
2020-07-10 650-668 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H LOS ALTOS CA
2020-05-13 650-374 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 PALO ALTO CA
2020-03-26 650-531 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PALO ALTO CA
2020-01-13 650-955 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H HALFMOONBY CA
2019-10-25 650-507 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 PALO ALTO CA
2019-10-25 650-512 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 PALO ALTO CA
2019-05-20 650-677 0–9 XXXall 10 · 7 holders which blocks → FRACTEL, LLC 965H SSNFRNCSCO CA
2019-03-22 650-514 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SAN MATEO CA
2019-03-20 650-418 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SAN MATEO CA
2019-03-20 650-977 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H PACIFICA CA
2019-03-19 650-699 0–9 XXXall 10 · 7 holders which blocks → FRACTEL, LLC 965H SAN MATEO CA
2019-03-19 650-788 0–9 XXXall 10 · 5 holders which blocks → FRACTEL, LLC 965H PALO ALTO CA
2019-02-08 650-501 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E PACIFICA CA
2019-02-08 650-502 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E SSNFRNCSCO CA
2019-02-06 650-459 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - CA 981E HALFMOONBY CA
2018-12-17 650-414 0–9 XXXall 10 · 4 holders which blocks → TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7145 REDWOOD CY CA
2018-10-04 650-439 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 MT VIEW CA
2018-08-08 650-420 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 PACIFICA CA
2018-05-09 650-407 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PALO ALTO CA
2018-05-08 650-405 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 LOS ALTOS CA
2018-05-08 650-709 0–9 XXXall 10 · 4 holders which blocks → AIRESPRING, INC. 996H PALO ALTO CA
2018-03-22 650-880 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 MT VIEW CA
2018-02-06 650-505 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 PALO ALTO CA
2018-01-18 650-402 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 HALFMOONBY CA
2018-01-08 650-398 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SAN MATEO CA
2017-09-12 650-379 0–9 XXXall 10 · 7 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 SSNFRNCSCO CA
2017-08-24 650-313 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PALO ALTO CA
2017-06-27 650-885 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PALO ALTO CA
2017-05-22 650-309 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 HALFMOONBY CA
2017-03-17 650-536 0–9 XXXall 10 · 3 holders which blocks → TELNYX LLC 073H SNFC JUNPR CA
2016-10-28 650-865 0–9 XXXall 10 · 8 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 SAN MATEO CA
2016-10-11 650-608 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNFC JUNPR CA
2016-09-21 650-476 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 HALFMOONBY CA
2016-09-07 650-304 0–9 XXXall 10 · 4 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 PALO ALTO CA
2016-08-31 650-448 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F MT VIEW CA
2016-08-30 650-447 0–9 XXXall 10 · 7 holders which blocks → T-MOBILE USA, INC. 6529 MT VIEW CA
2016-07-15 650-680 0–9 XXXall 10 · 6 holders which blocks → T-MOBILE USA, INC. 6529 LOS ALTOS CA
2016-07-08 650-484 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 SAN MATEO CA
2016-06-10 650-836 0–9 XXXwhole prefix which blocks → LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PESCADERO CA
2016-05-11 650-410 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - CA 649C SSNFRNCSCO CA
2016-04-29 650-250 0–9 XXXall 10 · 5 holders which blocks → T-MOBILE USA, INC. 6529 PALO ALTO CA
2016-04-26 650-509 0–9 XXXall 10 · 7 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PALO ALTO 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.