NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

7 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
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
2010-12-08 509-632-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E COULEECITY WA
2010-12-08 509-996-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E TWISP WA
2010-12-03 509-387-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 WENATCHEE WA
2010-12-03 509-426-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 YAKIMA WA
2010-12-03 509-440-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 KENNEWICK WA
2010-11-22 509-795-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SPOKANE WA
2010-11-12 509-237-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 EPHRATA WA
2010-11-09 509-774-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 WH SALMON WA
2010-11-05 509-795-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F SPOKANE WA
2010-11-05 509-795-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F SPOKANE WA
2010-11-05 509-795-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F SPOKANE WA
2010-11-05 509-795-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SPOKANE WA
2010-11-05 509-855-9XXX 9000–9999Assigned ONVOY, LLC - WA 483E MOSES LAKE WA
2010-10-27 509-240-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F WALLAWALLA WA
2010-10-27 509-426-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F YAKIMA WA
2010-10-27 509-426-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F YAKIMA WA
2010-10-27 509-426-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F YAKIMA WA
2010-10-27 509-542-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F PASCO WA
2010-10-21 509-498-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E CHENEY WA
2010-10-20 509-639-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E ALMIRA WA
2010-10-18 509-859-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ELLENSBURG WA
2010-10-08 509-305-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SUNNYSIDE WA
2010-10-07 509-703-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2010-10-07 509-703-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2010-10-06 509-795-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SPOKANE WA
2010-09-29 509-241-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2010-09-29 509-242-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2010-08-25 509-304-3XXX 3000–3999Assigned INLAND TEL CO 2423 CLE ELUM WA
2010-08-25 509-440-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 KENNEWICK WA
2010-08-23 509-288-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 COLFAX WA
2010-08-23 509-885-1XXX 1000–1999Assigned COMPUTERS 5*, INC. DBA LOCALTEL - WA 3229 WENATCHEE WA
2010-08-18 509-637-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 WH SALMON WA
2010-08-10 509-703-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2010-07-09 509-302-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 PASCO WA
2010-07-01 509-497-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K BENTONCITY WA
2010-06-25 509-262-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F DEER PARK WA
2010-06-25 509-350-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F MOSES LAKE WA
2010-06-25 509-414-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F ELK-GRNBLF WA
2010-06-25 509-557-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F OMAK WA
2010-06-25 509-563-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F COLVILLE WA
2010-06-25 509-780-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F CLARKSTON WA
2010-06-23 509-426-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F YAKIMA WA
2010-06-23 509-492-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F PASCO WA
2010-06-23 509-540-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F WALLAWALLA WA
2010-06-17 509-795-7XXX 7000–7999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 SPOKANE WA
2010-06-11 509-703-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F SPOKANE WA
2010-06-11 509-703-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F SPOKANE WA
2010-06-10 509-713-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 RICHLAND WA
2010-06-04 509-828-1XXX 1000–1999Assigned QWEST CORPORATION 9638 SPOKANE WA
2010-06-04 509-828-6XXX 6000–6999Assigned QWEST CORPORATION 9638 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.