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
2022-09-20 564-227-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 VANCOUVER WA
2022-09-20 564-264-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E CURTIS WA
2022-09-20 564-264-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E CURTIS WA
2022-09-20 564-264-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E CURTIS WA
2022-09-19 564-222-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E SILVERDALE WA
2022-09-19 564-222-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E SILVERDALE WA
2022-09-19 564-222-9XXX 9000–9999Assigned ONVOY, LLC - WA 483E SILVERDALE WA
2022-09-19 564-669-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F OLYMPIA WA
2022-09-15 564-209-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 WHATCOMCTY WA
2022-09-15 564-669-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 OLYMPIA WA
2022-09-06 564-626-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E PACIFICBCH WA
2022-09-06 564-633-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E WINLOCK WA
2022-09-02 564-218-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 BREMERTON WA
2022-09-02 564-218-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 BREMERTON WA
2022-09-02 564-218-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 BREMERTON WA
2022-09-02 564-218-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BREMERTON WA
2022-09-02 564-218-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BREMERTON WA
2022-08-24 564-214-0XXX 0000–0999Assigned ONVOY, LLC - WA 483E YACOLT WA
2022-08-24 564-214-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E YACOLT WA
2022-08-24 564-223-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J HAT ISLAND WA
2022-08-19 564-220-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E CENTRALIA WA
2022-08-17 564-516-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H MARYSVILLE WA
2022-08-17 564-516-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H MARYSVILLE WA
2022-08-17 564-516-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H MARYSVILLE WA
2022-08-17 564-516-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H MARYSVILLE WA
2022-08-17 564-516-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H MARYSVILLE WA
2022-08-06 564-209-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E WHATCOMCTY WA
2022-08-06 564-222-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E SILVERDALE WA
2022-08-06 564-224-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E ABERDEEN WA
2022-08-06 564-224-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E ABERDEEN WA
2022-08-04 564-777-0XXX 0000–0999Assigned TELNYX LLC 073H CASTLEROCK WA
2022-07-29 564-224-9XXX 9000–9999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F ABERDEEN WA
2022-07-29 564-676-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 OAK HARBOR WA
2022-07-19 564-516-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MARYSVILLE WA
2022-07-14 564-214-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E YACOLT WA
2022-07-13 564-220-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CENTRALIA WA
2022-07-13 564-220-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CENTRALIA WA
2022-07-01 564-653-9XXX 9000–9999Assigned ONVOY, LLC - WA 483E VANCOUVER WA
2022-06-30 564-217-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 LONGVIEW WA
2022-06-17 564-217-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J LONGVIEW WA
2022-06-17 564-217-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J LONGVIEW WA
2022-06-17 564-777-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J CASTLEROCK WA
2022-06-10 564-244-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 LONGVIEW WA
2022-06-03 564-217-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K LONGVIEW WA
2022-06-01 564-669-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J OLYMPIA WA
2022-06-01 564-669-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J OLYMPIA WA
2022-05-27 564-209-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 WHATCOMCTY WA
2022-05-27 564-653-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 VANCOUVER WA
2022-05-27 564-653-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 VANCOUVER WA
2022-05-27 564-653-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 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.