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
2021-08-10 564-205-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BREMERTON WA
2021-08-10 564-205-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BREMERTON WA
2021-08-10 564-205-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BREMERTON WA
2021-08-10 564-205-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BREMERTON WA
2021-08-10 564-205-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BREMERTON WA
2021-08-10 564-205-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BREMERTON WA
2021-08-05 564-210-1XXX 1000–1999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BREMERTON WA
2021-08-05 564-210-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BREMERTON WA
2021-08-05 564-210-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BREMERTON WA
2021-08-05 564-210-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BREMERTON WA
2021-08-05 564-210-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BREMERTON WA
2021-08-05 564-210-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BREMERTON WA
2021-08-05 564-333-3XXX 3000–3999Assigned FRACTEL, LLC 965H LONGVIEW WA
2021-08-04 564-244-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 LONGVIEW WA
2021-08-03 564-209-7XXX 7000–7999Assigned COMMIO, LLC 939H WHATCOMCTY WA
2021-08-03 564-444-1XXX 1000–1999Assigned COMMIO, LLC 939H VANCOUVER WA
2021-08-03 564-444-2XXX 2000–2999Assigned COMMIO, LLC 939H VANCOUVER WA
2021-08-03 564-444-3XXX 3000–3999Assigned COMMIO, LLC 939H VANCOUVER WA
2021-08-03 564-444-9XXX 9000–9999Assigned COMMIO, LLC 939H VANCOUVER WA
2021-08-02 564-222-2XXX 2000–2999Assigned FRACTEL, LLC 965H SILVERDALE WA
2021-07-30 564-201-3XXX 3000–3999Assigned COMMIO, LLC 939H OLYMPIA WA
2021-07-30 564-201-4XXX 4000–4999Assigned COMMIO, LLC 939H OLYMPIA WA
2021-07-30 564-201-5XXX 5000–5999Assigned COMMIO, LLC 939H OLYMPIA WA
2021-07-30 564-201-6XXX 6000–6999Assigned COMMIO, LLC 939H OLYMPIA WA
2021-07-14 564-234-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BUCKLEY WA
2021-07-14 564-234-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BUCKLEY WA
2021-07-01 564-234-9XXX 9000–9999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F BUCKLEY WA
2021-06-09 564-212-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ABERDEEN WA
2021-06-09 564-212-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ABERDEEN WA
2021-06-08 564-244-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LONGVIEW WA
2021-05-28 564-203-0XXX 0000–0999Assigned ONVOY, LLC - WA 483E PT ANGELES WA
2021-05-28 564-203-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E PT ANGELES WA
2021-05-28 564-234-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E BUCKLEY WA
2021-05-28 564-234-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E BUCKLEY WA
2021-05-28 564-244-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E LONGVIEW WA
2021-05-28 564-244-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E LONGVIEW WA
2021-05-28 564-244-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E LONGVIEW WA
2021-05-28 564-244-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E LONGVIEW WA
2021-05-28 564-444-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E VANCOUVER WA
2021-05-28 564-444-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E VANCOUVER WA
2021-05-28 564-444-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E VANCOUVER WA
2021-05-28 564-444-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E VANCOUVER WA
2021-05-28 564-465-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E ORTING WA
2021-05-28 564-465-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E ORTING WA
2021-05-28 564-524-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E COPALIS WA
2021-05-28 564-529-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E ROCHESTER WA
2021-05-28 564-529-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E ROCHESTER WA
2021-05-28 564-544-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E ABERDEEN WA
2021-05-28 564-546-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E BELFAIR WA
2021-05-28 564-546-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E BELFAIR 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.