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
2017-06-09 509-608-7XXX 7000–7999Assigned METROPCS, INC. 5562 SPOKANE WA
2017-05-18 509-219-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 STEVENSON WA
2017-05-09 509-861-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 OMAK WA
2017-04-17 509-306-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 ELLENSBURG WA
2017-04-17 509-306-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 ELLENSBURG WA
2017-04-17 509-907-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 YAKIMA WA
2017-03-30 509-405-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KENNEWICK WA
2017-03-23 509-498-1XXX 1000–1999Assigned METROPCS, INC. 5562 CHENEY WA
2017-03-23 509-596-3XXX 3000–3999Assigned METROPCS, INC. 5562 CLARKSTON WA
2017-03-23 509-596-4XXX 4000–4999Assigned METROPCS, INC. 5562 CLARKSTON WA
2017-03-23 509-715-5XXX 5000–5999Assigned METROPCS, INC. 5562 PULLMAN WA
2017-02-28 509-904-2XXX 2000–2999Assigned METROPCS, INC. 5562 SPOKANE WA
2017-02-28 509-904-3XXX 3000–3999Assigned METROPCS, INC. 5562 SPOKANE WA
2017-02-01 509-904-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F SPOKANE WA
2017-01-31 509-204-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F WALLAWALLA WA
2017-01-11 509-890-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 DEER PARK WA
2017-01-11 509-904-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2017-01-11 509-904-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2017-01-11 509-904-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2017-01-11 509-904-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2017-01-11 509-904-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2017-01-10 509-907-2XXX 2000–2999Assigned METROPCS, INC. 5562 YAKIMA WA
2017-01-09 509-730-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 WALLAWALLA WA
2016-12-20 509-992-1XXX 1000–1999Assigned TELNYX LLC 073H SPOKANE WA
2016-12-07 509-498-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 CHENEY WA
2016-12-07 509-904-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SPOKANE WA
2016-12-06 509-203-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 GRANDVIEW WA
2016-11-24 509-558-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SPOKANE WA
2016-11-22 509-317-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E YAKIMA WA
2016-11-11 509-567-7XXX 7000–7999Assigned CHARTER IP ENABLED SERVICES, LLC 792K PASCO WA
2016-11-10 509-596-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CLARKSTON WA
2016-11-09 509-213-0XXX 0000–0999Assigned ONVOY, LLC - WA 483E SPRINGDALE WA
2016-11-08 509-281-2XXX 2000–2999Assigned UNITED STATES CELLULAR - WA 6270 WH SALMON WA
2016-11-08 509-722-0XXX 0000–0999Assigned NATIVE NETWORK, INC. 483H CHEWELAH WA
2016-11-03 509-558-0XXX 0000–0999Assigned METROPCS, INC. 5562 SPOKANE WA
2016-11-03 509-558-1XXX 1000–1999Assigned METROPCS, INC. 5562 SPOKANE WA
2016-10-28 509-643-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SUNNYSIDE WA
2016-10-11 509-405-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 KENNEWICK WA
2016-10-07 509-391-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SUNNYSIDE WA
2016-10-07 509-584-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 WAPATO WA
2016-10-07 509-584-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 WAPATO WA
2016-10-07 509-640-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 COLVILLE WA
2016-09-30 509-203-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 GRANDVIEW WA
2016-09-27 509-558-2XXX 2000–2999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 SPOKANE WA
2016-09-26 509-289-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F EPHRATA WA
2016-09-26 509-289-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F EPHRATA WA
2016-09-26 509-289-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F EPHRATA WA
2016-09-26 509-620-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F COULEE DAM WA
2016-09-26 509-620-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F COULEE DAM WA
2016-09-26 509-620-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F COULEE DAM 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.