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
2007-10-18 509-289-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 EPHRATA WA
2007-10-17 509-592-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 PULLMAN WA
2007-10-16 509-380-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 PASCO WA
2007-10-16 509-398-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EPHRATA WA
2007-10-15 509-494-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 YAKIMA WA
2007-10-10 509-368-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SPOKANE WA
2007-10-05 509-264-2XXX 2000–2999Assigned METROPCS, INC. 5562 WENATCHEE WA
2007-10-05 509-264-5XXX 5000–5999Assigned METROPCS, INC. 5562 WENATCHEE WA
2007-10-03 509-306-1XXX 1000–1999Assigned METROPCS, INC. 5562 ELLENSBURG WA
2007-09-27 509-339-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E PULLMAN WA
2007-09-27 509-550-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E NEWPORT WA
2007-09-27 509-635-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E GARFIELD WA
2007-09-27 509-797-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 QUINCY WA
2007-09-27 509-872-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E GARRISON WA
2007-09-27 509-878-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E PALOUSE WA
2007-09-26 509-262-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E DEER PARK WA
2007-09-26 509-262-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E DEER PARK WA
2007-09-26 509-651-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E DEER PARK WA
2007-09-25 509-392-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RICHLAND WA
2007-09-25 509-987-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KENNEWICK WA
2007-09-25 509-987-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KENNEWICK WA
2007-09-18 509-449-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 BRIDGEPORT WA
2007-09-14 509-378-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 KENNEWICK WA
2007-09-14 509-392-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 RICHLAND WA
2007-09-14 509-881-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 WENATCHEE WA
2007-09-14 509-881-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 WENATCHEE WA
2007-09-14 509-881-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 WENATCHEE WA
2007-09-13 509-668-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 WENATCHEE WA
2007-09-11 509-619-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 KENNEWICK WA
2007-09-11 509-680-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 COLVILLE WA
2007-09-07 509-295-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 CLARKSTON WA
2007-09-04 509-388-3XXX 3000–3999Assigned UNITED STATES CELLULAR - WA 6270 YAKIMA WA
2007-09-04 509-834-5XXX 5000–5999Assigned UNITED STATES CELLULAR - WA 6270 YAKIMA WA
2007-09-04 509-853-8XXX 8000–8999Assigned UNITED STATES CELLULAR - WA 6270 YAKIMA WA
2007-09-04 509-853-9XXX 9000–9999Assigned UNITED STATES CELLULAR - WA 6270 YAKIMA WA
2007-09-02 509-853-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 YAKIMA WA
2007-09-02 509-853-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 YAKIMA WA
2007-09-02 509-853-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 YAKIMA WA
2007-08-29 509-346-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 OTHELLO WA
2007-08-28 509-496-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2007-08-28 509-496-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2007-08-28 509-540-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 WALLAWALLA WA
2007-08-28 509-638-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2007-08-28 509-638-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2007-08-28 509-638-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2007-08-28 509-638-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2007-08-28 509-638-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2007-08-28 509-638-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2007-08-28 509-834-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 YAKIMA WA
2007-08-08 509-330-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - WA 7274 PULLMAN 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.