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
2020-12-23 509-606-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E SPOKANE WA
2020-12-23 509-606-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E SPOKANE WA
2020-12-23 509-606-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E SPOKANE WA
2020-12-23 509-606-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E SPOKANE WA
2020-12-23 509-606-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E SPOKANE WA
2020-12-22 509-513-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E NORTHPORT WA
2020-12-22 509-513-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E NORTHPORT WA
2020-12-17 509-201-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ELLENSBURG WA
2020-12-17 509-201-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ELLENSBURG WA
2020-12-17 509-778-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E PROSSER WA
2020-12-17 509-778-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E PROSSER WA
2020-12-16 509-485-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E MOLSON WA
2020-12-16 509-485-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E MOLSON WA
2020-12-04 509-508-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SPOKANE WA
2020-12-04 509-508-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SPOKANE WA
2020-11-27 509-215-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E DAVENPORT WA
2020-11-27 509-215-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E DAVENPORT WA
2020-11-23 509-508-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F SPOKANE WA
2020-11-23 509-508-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F SPOKANE WA
2020-11-20 509-741-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 WENATCHEE WA
2020-11-20 509-870-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 KENNEWICK WA
2020-11-20 509-870-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 KENNEWICK WA
2020-11-15 509-300-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E WENATCHEE WA
2020-11-15 509-300-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E WENATCHEE WA
2020-11-13 509-418-9XXX 9000–9999Assigned TELNYX LLC 073H SPOKANE WA
2020-11-12 509-676-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F WALLAWALLA WA
2020-11-06 509-303-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 PROSSER WA
2020-11-06 509-519-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E MATTAWA WA
2020-11-06 509-519-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E MATTAWA WA
2020-11-06 509-519-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E MATTAWA WA
2020-11-06 509-584-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E WAPATO WA
2020-11-06 509-584-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E WAPATO WA
2020-11-03 509-602-5XXX 5000–5999Assigned COMPUTERS 5*, INC. DBA LOCALTEL - WA 3229 CONNELL WA
2020-11-03 509-605-5XXX 5000–5999Assigned COMPUTERS 5*, INC. DBA LOCALTEL - WA 3229 WILBUR WA
2020-10-28 509-794-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 QUINCY WA
2020-10-27 509-512-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MOSES LAKE WA
2020-10-26 509-800-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F CLARKSTON WA
2020-10-23 509-601-6XXX 6000–6999Assigned TWILIO INTERNATIONAL, INC. 506J SPOKANE WA
2020-10-20 509-685-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E COLVILLE WA
2020-10-20 509-685-8XXX 8000–8999Assigned TERRA NOVA TELECOM INC. 145J COLVILLE WA
2020-10-15 509-312-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ELLENSBURG WA
2020-10-15 509-312-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ELLENSBURG WA
2020-10-08 509-408-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J LIBERTY LK WA
2020-10-08 509-615-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J ELK-GRNBLF WA
2020-10-08 509-621-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J NEWMANLAKE WA
2020-10-08 509-637-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E WH SALMON WA
2020-10-08 509-890-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J DEER PARK WA
2020-10-06 509-400-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E MATTAWA WA
2020-10-06 509-400-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E MATTAWA WA
2020-10-06 509-816-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E 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.