NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

6 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.

Most active assignees, last 30 days — NPA 564
T-MOBILE USA, INC. 2
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 2
LTE WIRELESS INC. 1
EXIANT COMMUNICATIONS LLC 1
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 thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2021-01-28 564-464-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E OLYMPIA WA
2021-01-27 564-208-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 VANCOUVER WA
2021-01-27 564-208-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 VANCOUVER WA
2021-01-27 564-208-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 VANCOUVER WA
2021-01-27 564-208-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 VANCOUVER WA
2021-01-27 564-208-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 VANCOUVER WA
2021-01-26 564-202-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 BREMERTON WA
2021-01-26 564-202-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BREMERTON WA
2021-01-20 564-203-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E PT ANGELES WA
2021-01-20 564-544-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 ABERDEEN WA
2021-01-19 564-244-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LONGVIEW WA
2021-01-13 564-208-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 VANCOUVER WA
2021-01-13 564-544-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ABERDEEN WA
2021-01-11 564-204-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CENTRALIA WA
2021-01-11 564-204-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CENTRALIA WA
2021-01-11 564-204-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CENTRALIA WA
2020-12-16 564-200-9XXX 9000–9999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F OLYMPIA WA
2020-12-16 564-777-9XXX 9000–9999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F CASTLEROCK WA
2020-12-14 564-204-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CENTRALIA WA
2020-11-19 564-203-1XXX 1000–1999Assigned NUSO, LLC 478J PT ANGELES WA
2020-11-19 564-524-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E COPALIS WA
2020-11-19 564-524-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E COPALIS WA
2020-11-12 564-464-0XXX 0000–0999Assigned TELNYX LLC 073H OLYMPIA WA
2020-11-12 564-888-7XXX 7000–7999Assigned TELNYX LLC 073H VANCOUVER WA
2020-11-06 564-464-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 OLYMPIA WA
2020-11-06 564-464-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 OLYMPIA WA
2020-10-30 564-464-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E OLYMPIA WA
2020-10-30 564-464-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E OLYMPIA WA
2020-10-30 564-464-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E OLYMPIA WA
2020-10-30 564-464-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E OLYMPIA WA
2020-10-29 564-200-5XXX 5000–5999Assigned IP HORIZON LLC 515J OLYMPIA WA
2020-10-29 564-200-6XXX 6000–6999Assigned IP HORIZON LLC 515J OLYMPIA WA
2020-10-27 564-202-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BREMERTON WA
2020-10-27 564-202-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BREMERTON WA
2020-10-22 564-544-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E ABERDEEN WA
2020-10-22 564-544-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E ABERDEEN WA
2020-10-22 564-546-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E BELFAIR WA
2020-10-22 564-546-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E BELFAIR WA
2020-10-22 564-654-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E BREMERTON WA
2020-10-22 564-654-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E BREMERTON WA
2020-10-22 564-654-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E BREMERTON WA
2020-09-18 564-201-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 OLYMPIA WA
2020-09-18 564-201-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E OLYMPIA WA
2020-09-18 564-201-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E OLYMPIA WA
2020-08-05 564-240-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J SILVERDALE WA
2020-07-16 564-999-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E OLYMPIA WA
2020-07-09 564-240-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J SILVERDALE WA
2020-06-25 564-240-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H SILVERDALE WA
2020-06-25 564-240-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H SILVERDALE WA
2020-05-14 564-888-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 VANCOUVER WA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.