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
2006-03-13 509-680-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 COLVILLE WA
2006-03-10 509-385-0XXX 0000–0999Assigned ONVOY, LLC - WA 483E SPOKANE WA
2006-03-10 509-492-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PASCO WA
2006-03-10 509-492-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PASCO WA
2006-03-06 509-205-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 KENNEWICK WA
2006-03-02 509-240-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 WALLAWALLA WA
2006-02-15 509-388-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 YAKIMA WA
2006-02-10 509-302-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E PASCO WA
2006-02-10 509-554-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E RICHLAND WA
2006-02-09 509-592-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 PULLMAN WA
2006-01-30 509-318-1XXX 1000–1999Assigned ELTOPIA COMMUNICATIONS, LLC - WA 663D CONNELL WA
2006-01-27 509-337-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 WAITSBURG WA
2006-01-27 509-597-7XXX 7000–7999Assigned INLAND CELLULAR LLC 1484 UNIONTOWN WA
2006-01-26 509-350-1XXX 1000–1999Assigned ELTOPIA COMMUNICATIONS, LLC - WA 663D MOSES LAKE WA
2006-01-26 509-654-1XXX 1000–1999Assigned ELTOPIA COMMUNICATIONS, LLC - WA 663D YAKIMA WA
2006-01-26 509-741-1XXX 1000–1999Assigned ELTOPIA COMMUNICATIONS, LLC - WA 663D WENATCHEE WA
2006-01-25 509-590-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2006-01-25 509-590-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2006-01-25 509-590-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2006-01-25 509-590-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2006-01-25 509-863-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2006-01-24 509-205-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 KENNEWICK WA
2006-01-24 509-393-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 WENATCHEE WA
2006-01-24 509-393-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 WENATCHEE WA
2006-01-24 509-492-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 PASCO WA
2006-01-24 509-554-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RICHLAND WA
2006-01-11 509-304-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CLE ELUM WA
2006-01-11 509-591-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KENNEWICK WA
2006-01-11 509-591-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KENNEWICK WA
2006-01-11 509-591-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KENNEWICK WA
2006-01-11 509-643-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SUNNYSIDE WA
2006-01-11 509-654-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 YAKIMA WA
2006-01-11 509-654-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 YAKIMA WA
2006-01-11 509-654-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 YAKIMA WA
2006-01-11 509-654-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 YAKIMA WA
2006-01-11 509-714-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SPOKANE WA
2006-01-11 509-714-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SPOKANE WA
2006-01-11 509-714-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SPOKANE WA
2006-01-11 509-714-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SPOKANE WA
2006-01-11 509-714-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SPOKANE WA
2006-01-11 509-714-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SPOKANE WA
2006-01-11 509-793-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MOSES LAKE WA
2006-01-11 509-793-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MOSES LAKE WA
2006-01-11 509-793-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MOSES LAKE WA
2006-01-10 509-392-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 RICHLAND WA
2006-01-10 509-859-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ELLENSBURG WA
2006-01-03 509-205-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 KENNEWICK WA
2006-01-03 509-205-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 KENNEWICK WA
2006-01-03 509-303-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PROSSER WA
2005-12-27 509-628-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E KENNEWICK 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.