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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2005-01-12 509-540-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 WALLAWALLA WA
2005-01-12 509-607-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 ELLENSBURG WA
2005-01-12 509-607-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 ELLENSBURG WA
2005-01-06 509-855-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MOSES LAKE WA
2005-01-04 509-378-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 KENNEWICK WA
2005-01-04 509-378-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 KENNEWICK WA
2005-01-04 509-439-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SUNNYSIDE WA
2004-12-29 509-203-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 GRANDVIEW WA
2004-12-29 509-383-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 GRANGER WA
2004-12-21 509-288-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 COLFAX WA
2004-12-21 509-936-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 CHEWELAH WA
2004-12-14 509-429-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 OMAK WA
2004-12-10 509-876-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 WALLAWALLA WA
2004-11-24 509-590-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SPOKANE WA
2004-11-18 509-228-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 SPOKANE WA
2004-11-18 509-374-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 KENNEWICK WA
2004-11-18 509-524-3XXX 3000–3999Assigned METROPCS, INC. 5562 WALLAWALLA WA
2004-11-18 509-594-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 YAKIMA WA
2004-11-18 509-643-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SUNNYSIDE WA
2004-11-18 509-707-2XXX 2000–2999Assigned METROPCS, INC. 5562 MOSES LAKE WA
2004-11-16 509-240-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 WALLAWALLA WA
2004-11-16 509-240-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 WALLAWALLA WA
2004-11-16 509-371-6XXX 6000–6999Assigned ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 4324 RICHLAND WA
2004-11-16 509-371-7XXX 7000–7999Assigned ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 4324 RICHLAND WA
2004-11-16 509-388-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 YAKIMA WA
2004-11-15 509-793-2XXX 2000–2999Assigned QWEST CORPORATION 9638 MOSES LAKE WA
2004-11-12 509-460-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 KENNEWICK WA
2004-11-12 509-630-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 WENATCHEE WA
2004-11-11 509-250-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 GOLDENDALE WA
2004-10-26 509-398-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EPHRATA WA
2004-10-20 509-588-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 BENTONCITY WA
2004-10-20 509-872-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 GARRISON WA
2004-10-20 509-878-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 PALOUSE WA
2004-10-01 509-855-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MOSES LAKE WA
2004-09-30 509-331-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 OTHELLO WA
2004-09-24 509-859-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ELLENSBURG WA
2004-09-22 509-215-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 DAVENPORT WA
2004-09-02 509-631-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 COULEE DAM WA
2004-09-01 509-209-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF WASHINGTON, LLC - WA 7455 SPOKANE WA
2004-09-01 509-641-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 WILBUR WA
2004-09-01 509-988-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ODESSA WA
2004-08-31 509-293-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 WENATCHEE WA
2004-08-31 509-293-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 WENATCHEE WA
2004-08-31 509-339-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PULLMAN WA
2004-08-31 509-643-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SUNNYSIDE WA
2004-08-25 509-860-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 WENATCHEE WA
2004-08-16 509-207-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 REPUBLIC WA
2004-07-19 509-844-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2004-07-19 509-844-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2004-07-19 509-844-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 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.