NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

7 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026

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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2016-01-21 509-992-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SPOKANE WA
2016-01-15 509-934-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2016-01-15 509-934-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2016-01-14 509-537-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F PASCO WA
2016-01-14 509-676-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F WALLAWALLA WA
2016-01-13 509-960-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2015-12-31 509-897-2XXX 2000–2999Assigned QWEST CORPORATION 9638 WALLAWALLA WA
2015-12-31 509-897-3XXX 3000–3999Assigned QWEST CORPORATION 9638 WALLAWALLA WA
2015-12-31 509-897-5XXX 5000–5999Assigned QWEST CORPORATION 9638 WALLAWALLA WA
2015-12-31 509-897-8XXX 8000–8999Assigned QWEST CORPORATION 9638 WALLAWALLA WA
2015-12-30 509-960-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2015-12-22 509-300-0XXX 0000–0999Assigned ONVOY, LLC - WA 483E WENATCHEE WA
2015-12-22 509-317-5XXX 5000–5999Assigned NATIVE NETWORK, INC. 483H YAKIMA WA
2015-12-21 509-620-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E COULEE DAM WA
2015-12-14 509-212-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 KENNEWICK WA
2015-12-10 509-391-1XXX 1000–1999Assigned METROPCS, INC. 5562 SUNNYSIDE WA
2015-12-09 509-316-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 PASCO WA
2015-12-09 509-579-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KENNEWICK WA
2015-11-11 509-317-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 YAKIMA WA
2015-11-11 509-960-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SPOKANE WA
2015-10-30 509-620-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J COULEE DAM WA
2015-10-30 509-960-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 SPOKANE WA
2015-10-29 509-960-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J SPOKANE WA
2015-10-20 509-761-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MOSES LAKE WA
2015-10-20 509-913-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 OTHELLO WA
2015-10-15 509-876-0XXX 0000–0999Assigned CHARTER IP ENABLED SERVICES, LLC 792K WALLAWALLA WA
2015-10-12 509-433-3XXX 3000–3999Assigned ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 4324 WENATCHEE WA
2015-10-12 509-436-3XXX 3000–3999Assigned ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 4324 WENATCHEE WA
2015-10-12 509-436-4XXX 4000–4999Assigned ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 4324 WENATCHEE WA
2015-10-12 509-436-5XXX 5000–5999Assigned ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 4324 WENATCHEE WA
2015-10-12 509-436-6XXX 6000–6999Assigned ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 4324 WENATCHEE WA
2015-10-09 509-598-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2015-10-09 509-818-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2015-10-09 509-960-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SPOKANE WA
2015-10-06 509-317-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 YAKIMA WA
2015-10-06 509-317-2XXX 2000–2999Assigned CHARTER IP ENABLED SERVICES, LLC 792K YAKIMA WA
2015-10-06 509-563-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 COLVILLE WA
2015-10-06 509-579-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 KENNEWICK WA
2015-10-05 509-818-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E SPOKANE WA
2015-10-01 509-790-2XXX 2000–2999Assigned UNITED STATES CELLULAR - WA 6270 SUNNYSIDE WA
2015-09-30 509-932-9XXX 9000–9999Assigned UNITED STATES CELLULAR - WA 6270 MATTAWA WA
2015-09-29 509-367-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 YAKIMA WA
2015-09-29 509-733-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BREWSTER WA
2015-09-29 509-740-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 OMAK WA
2015-09-28 509-960-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E SPOKANE WA
2015-09-23 509-341-0XXX 0000–0999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F TWISP WA
2015-09-21 509-578-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RICHLAND WA
2015-09-18 509-486-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E TONASKET WA
2015-09-17 509-381-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SPOKANE WA
2015-09-17 509-579-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 KENNEWICK WA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.