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
2020-04-27 564-999-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F OLYMPIA WA
2019-07-12 564-999-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 OLYMPIA WA
2019-06-14 564-999-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 OLYMPIA WA
2019-06-14 564-999-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 OLYMPIA WA
2019-06-14 564-999-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 OLYMPIA WA
2019-06-11 564-888-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E VANCOUVER WA
2019-06-11 564-888-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E VANCOUVER WA
2019-04-16 564-777-7XXX 7000–7999Assigned TERRA NOVA TELECOM INC. 145J CASTLEROCK WA
2019-04-08 564-888-9XXX 9000–9999Assigned TELNYX LLC 073H VANCOUVER WA
2019-04-02 564-999-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J OLYMPIA WA
2019-04-01 564-888-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 VANCOUVER WA
2019-04-01 564-888-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 VANCOUVER WA
2019-04-01 564-888-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 VANCOUVER WA
2019-03-20 564-999-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 OLYMPIA WA
2019-03-19 564-999-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 OLYMPIA WA
2019-02-28 564-888-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 VANCOUVER WA
2019-02-25 564-999-9XXX 9000–9999Assigned TERRA NOVA TELECOM INC. 145J OLYMPIA WA
2018-12-28 564-888-8XXX 8000–8999Assigned TERRA NOVA TELECOM INC. 145J VANCOUVER WA
2018-12-04 564-397-0XXX 0000–0999Assigned VONAGE AMERICA LLC 197D VANCOUVER WA
2018-12-04 564-397-9XXX 9000–9999Assigned VONAGE AMERICA LLC 197D VANCOUVER WA
2018-09-19 564-240-6XXX 6000–6999Assigned TELNYX LLC 073H SILVERDALE WA
2018-07-17 564-240-1XXX 1000–1999Assigned QWEST CORPORATION 9638 SILVERDALE WA
2018-07-17 564-240-2XXX 2000–2999Assigned QWEST CORPORATION 9638 SILVERDALE WA
2018-07-17 564-240-3XXX 3000–3999Assigned QWEST CORPORATION 9638 SILVERDALE WA
2018-07-17 564-240-4XXX 4000–4999Assigned QWEST CORPORATION 9638 SILVERDALE WA
2018-07-17 564-240-5XXX 5000–5999Assigned QWEST CORPORATION 9638 SILVERDALE WA
2017-08-22 564-397-5XXX 5000–5999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 VANCOUVER WA
2017-08-22 564-397-6XXX 6000–6999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 VANCOUVER WA
2017-08-22 564-397-7XXX 7000–7999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 VANCOUVER WA
2017-08-22 564-397-8XXX 8000–8999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 VANCOUVER WA
2017-06-30 564-397-1XXX 1000–1999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 VANCOUVER WA
2017-06-30 564-397-2XXX 2000–2999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 VANCOUVER WA
2017-06-30 564-397-3XXX 3000–3999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 VANCOUVER WA
2017-06-30 564-397-4XXX 4000–4999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 VANCOUVER 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.