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
2005-12-27 509-628-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E KENNEWICK WA
2005-12-21 509-788-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PROSSER WA
2005-12-13 509-842-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E SPOKANE WA
2005-12-06 509-293-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 WENATCHEE WA
2005-12-06 509-434-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SPOKANE WA
2005-12-06 509-434-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SPOKANE WA
2005-12-06 509-834-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 YAKIMA WA
2005-11-23 509-318-9XXX 9000–9999Assigned METROPCS, INC. 5562 CONNELL WA
2005-11-23 509-851-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PASCO WA
2005-11-22 509-393-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 WENATCHEE WA
2005-11-22 509-396-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KENNEWICK WA
2005-11-11 509-341-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 TWISP WA
2005-11-10 509-860-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 WENATCHEE WA
2005-11-10 509-860-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 WENATCHEE WA
2005-11-02 509-434-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SPOKANE WA
2005-11-02 509-434-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SPOKANE WA
2005-11-02 509-554-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RICHLAND WA
2005-11-01 509-566-7XXX 7000–7999Assigned INLAND CELLULAR LLC 1484 POMEROY WA
2005-11-01 509-566-8XXX 8000–8999Assigned INLAND CELLULAR LLC 1484 POMEROY WA
2005-10-31 509-378-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 KENNEWICK WA
2005-10-31 509-378-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 KENNEWICK WA
2005-10-26 509-480-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 YAKIMA WA
2005-10-26 509-480-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 YAKIMA WA
2005-10-24 509-305-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SUNNYSIDE WA
2005-10-24 509-396-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KENNEWICK WA
2005-10-24 509-690-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 COLVILLE WA
2005-10-19 509-845-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PASCO WA
2005-10-18 509-542-5XXX 5000–5999Assigned QWEST CORPORATION 9638 PASCO WA
2005-10-14 509-494-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 YAKIMA WA
2005-10-14 509-494-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 YAKIMA WA
2005-10-05 509-843-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 POMEROY WA
2005-10-04 509-209-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SPOKANE WA
2005-10-04 509-228-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SPOKANE WA
2005-10-04 509-228-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SPOKANE WA
2005-09-27 509-831-2XXX 2000–2999Assigned UNITED STATES CELLULAR - WA 6270 SUNNYSIDE WA
2005-09-27 509-831-3XXX 3000–3999Assigned UNITED STATES CELLULAR - WA 6270 SUNNYSIDE WA
2005-09-26 509-205-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 KENNEWICK WA
2005-09-22 509-414-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J ELK-GRNBLF WA
2005-09-20 509-393-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 WENATCHEE WA
2005-09-16 509-209-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2005-09-16 509-209-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2005-09-16 509-209-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2005-09-16 509-209-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2005-09-16 509-209-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2005-09-16 509-209-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2005-09-13 509-314-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 TOPPENISH WA
2005-09-07 509-279-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2005-08-31 509-279-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SPOKANE WA
2005-08-31 509-279-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SPOKANE WA
2005-08-31 509-499-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 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.