NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

6 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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
2021-05-28 564-777-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E CASTLEROCK WA
2021-05-28 564-777-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E CASTLEROCK WA
2021-05-27 564-465-3XXX 3000–3999Assigned TON80 COMMUNICATIONS, LLC 516J ORTING WA
2021-05-24 564-546-3XXX 3000–3999Assigned TON80 COMMUNICATIONS, LLC 516J BELFAIR WA
2021-05-09 564-209-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 WHATCOMCTY WA
2021-05-06 564-444-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 VANCOUVER WA
2021-05-04 564-210-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BREMERTON WA
2021-05-04 564-210-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BREMERTON WA
2021-05-04 564-210-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BREMERTON WA
2021-05-04 564-654-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BREMERTON WA
2021-05-04 564-654-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BREMERTON WA
2021-04-22 564-201-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 OLYMPIA WA
2021-04-22 564-201-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 OLYMPIA WA
2021-04-22 564-201-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 OLYMPIA WA
2021-04-22 564-234-5XXX 5000–5999Assigned FRACTEL, LLC 965H BUCKLEY WA
2021-04-22 564-465-8XXX 8000–8999Assigned FRACTEL, LLC 965H ORTING WA
2021-04-22 564-529-3XXX 3000–3999Assigned FRACTEL, LLC 965H ROCHESTER WA
2021-04-22 564-529-9XXX 9000–9999Assigned FRACTEL, LLC 965H ROCHESTER WA
2021-04-18 564-676-6XXX 6000–6999Assigned TON80 COMMUNICATIONS, LLC 516J OAK HARBOR WA
2021-04-16 564-200-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 OLYMPIA WA
2021-04-16 564-200-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 OLYMPIA WA
2021-04-16 564-200-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 OLYMPIA WA
2021-03-26 564-204-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 CENTRALIA WA
2021-03-23 564-207-1XXX 1000–1999Assigned NUSO, LLC 478J TENINO WA
2021-03-10 564-444-4XXX 4000–4999Assigned FRACTEL, LLC 965H VANCOUVER WA
2021-03-09 564-202-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 BREMERTON WA
2021-03-09 564-202-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 BREMERTON WA
2021-03-09 564-654-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 BREMERTON WA
2021-03-09 564-654-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 BREMERTON WA
2021-03-09 564-654-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 BREMERTON WA
2021-02-18 564-200-1XXX 1000–1999Assigned METROPCS, INC. 5562 OLYMPIA WA
2021-02-18 564-202-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 BREMERTON WA
2021-02-18 564-202-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 BREMERTON WA
2021-02-18 564-202-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 BREMERTON WA
2021-02-18 564-244-0XXX 0000–0999Assigned METROPCS, INC. 5562 LONGVIEW WA
2021-02-16 564-203-7XXX 7000–7999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F PT ANGELES WA
2021-02-16 564-209-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 WHATCOMCTY WA
2021-02-16 564-209-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 WHATCOMCTY WA
2021-02-05 564-200-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 OLYMPIA WA
2021-02-05 564-200-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 OLYMPIA WA
2021-02-04 564-204-5XXX 5000–5999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F CENTRALIA WA
2021-02-04 564-544-8XXX 8000–8999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F ABERDEEN WA
2021-02-04 564-546-9XXX 9000–9999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F BELFAIR WA
2021-02-04 564-654-9XXX 9000–9999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F BREMERTON WA
2021-01-29 564-203-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PT ANGELES WA
2021-01-29 564-203-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PT ANGELES WA
2021-01-29 564-204-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E CENTRALIA WA
2021-01-29 564-204-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E CENTRALIA WA
2021-01-28 564-200-0XXX 0000–0999Assigned ONVOY, LLC - WA 483E OLYMPIA WA
2021-01-28 564-464-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E OLYMPIA WA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.