NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

8 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 509
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 3
NEW CINGULAR WIRELESS PCS, LLC 2
EXIANT COMMUNICATIONS LLC 2
LEVEL 3 COMMUNICATIONS, LLC - WA 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
2021-10-25 509-404-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E DAYTON WA
2021-10-25 509-417-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E WARDEN WA
2021-10-25 509-478-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E ROSALIA WA
2021-10-25 509-485-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E MOLSON WA
2021-10-25 509-567-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E PASCO WA
2021-10-25 509-567-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E PASCO WA
2021-10-25 509-567-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E PASCO WA
2021-10-25 509-641-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E WILBUR WA
2021-10-25 509-644-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E LOON LAKE WA
2021-10-25 509-646-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E WASHTUCNA WA
2021-10-25 509-841-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E WAITSBURG WA
2021-10-25 509-852-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E CLE ELUM WA
2021-10-25 509-887-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E RITZVILLE WA
2021-10-25 509-905-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E PASCO WA
2021-10-25 509-923-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E PATEROS WA
2021-10-25 509-973-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E WHITSTRAN WA
2021-10-22 509-390-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E SOAP LAKE WA
2021-10-22 509-516-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E WALLAWALLA WA
2021-10-22 509-730-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E WALLAWALLA WA
2021-10-22 509-771-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 MOSES LAKE WA
2021-10-22 509-956-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E WALLAWALLA WA
2021-10-21 509-219-9XXX 9000–9999Assigned ONVOY, LLC - WA 483E STEVENSON WA
2021-10-21 509-427-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E STEVENSON WA
2021-10-20 509-778-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 PROSSER WA
2021-10-18 509-510-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E OTHELLO WA
2021-10-18 509-512-0XXX 0000–0999Assigned ONVOY, LLC - WA 483E MOSES LAKE WA
2021-10-18 509-512-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E MOSES LAKE WA
2021-10-18 509-512-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E MOSES LAKE WA
2021-10-18 509-615-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E ELK-GRNBLF WA
2021-10-18 509-615-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E ELK-GRNBLF WA
2021-10-18 509-712-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E SUNNYSIDE WA
2021-10-18 509-712-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E SUNNYSIDE WA
2021-10-18 509-712-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E SUNNYSIDE WA
2021-10-18 509-715-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E PULLMAN WA
2021-10-18 509-778-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E PROSSER WA
2021-10-18 509-788-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E PROSSER WA
2021-10-18 509-794-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E QUINCY WA
2021-10-18 509-913-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E OTHELLO WA
2021-10-11 509-712-1XXX 1000–1999Assigned UNITED STATES CELLULAR - WA 6270 SUNNYSIDE WA
2021-10-08 509-421-8XXX 8000–8999Assigned SKYE TELECOM LLC DBA SKYETEL 622J WENATCHEE WA
2021-10-05 509-592-2XXX 2000–2999Assigned SKYE TELECOM LLC DBA SKYETEL 622J PULLMAN WA
2021-10-05 509-712-0XXX 0000–0999Assigned UNITED STATES CELLULAR - WA 6270 SUNNYSIDE WA
2021-10-04 509-508-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F SPOKANE WA
2021-10-01 509-603-0XXX 0000–0999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SPOKANE WA
2021-10-01 509-603-1XXX 1000–1999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SPOKANE WA
2021-10-01 509-603-2XXX 2000–2999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SPOKANE WA
2021-10-01 509-603-3XXX 3000–3999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SPOKANE WA
2021-10-01 509-603-4XXX 4000–4999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SPOKANE WA
2021-10-01 509-603-5XXX 5000–5999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SPOKANE WA
2021-10-01 509-603-6XXX 6000–6999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J SPOKANE 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.