NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

2 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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 425
NEW CINGULAR WIRELESS PCS, 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
2004-09-27 425-484-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F BELLEVUE WA
2004-09-21 425-213-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BELLEVUE WA
2004-09-21 425-354-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BOTHELL WA
2004-09-16 425-256-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 BELLEVUE WA
2004-09-16 425-256-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 BELLEVUE WA
2004-09-16 425-256-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - WA 7146 BELLEVUE WA
2004-09-16 425-275-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 HALLS LAKE WA
2004-09-16 425-275-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 HALLS LAKE WA
2004-09-15 425-225-8XXX 8000–8999Assigned ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 4324 SILVERLAKE WA
2004-08-31 425-374-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EVERETT WA
2004-08-31 425-387-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EVERETT WA
2004-08-31 425-387-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EVERETT WA
2004-08-31 425-802-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BELLEVUE WA
2004-08-24 425-923-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 EVERETT WA
2004-08-23 425-208-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2004-08-23 425-223-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 BELLEVUE WA
2004-08-10 425-275-5XXX 5000–5999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 HALLS LAKE WA
2004-08-04 425-208-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2004-07-29 425-318-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BOTHELL WA
2004-07-26 425-208-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2004-07-23 425-283-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BELLEVUE WA
2004-07-16 425-213-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 BELLEVUE WA
2004-07-16 425-213-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 BELLEVUE WA
2004-07-16 425-213-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 BELLEVUE WA
2004-07-07 425-381-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BOTHELL WA
2004-07-06 425-443-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2004-07-06 425-445-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2004-06-29 425-216-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 KIRKLAND WA
2004-06-02 425-381-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BOTHELL WA
2004-05-19 425-213-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 BELLEVUE WA
2004-04-16 425-358-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MAPLE VLY WA
2004-02-19 425-318-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BOTHELL WA
2004-02-11 425-275-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 HALLS LAKE WA
2004-02-11 425-275-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 HALLS LAKE WA
2003-12-11 425-205-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BOTHELL WA
2003-12-11 425-205-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BOTHELL WA
2003-12-01 425-283-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BELLEVUE WA
2003-11-25 425-310-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MAPLE VLY WA
2003-11-17 425-275-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 HALLS LAKE WA
2003-10-28 425-205-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BOTHELL WA
2003-10-13 425-387-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EVERETT WA
2003-10-13 425-387-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EVERETT WA
2003-10-13 425-387-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EVERETT WA
2003-10-06 425-341-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SILVERLAKE WA
2003-10-03 425-283-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BELLEVUE WA
2003-10-03 425-283-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BELLEVUE WA
2003-08-21 425-736-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 BELLEVUE WA
2003-08-21 425-736-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 BELLEVUE WA
2003-08-20 425-283-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BELLEVUE WA
2003-08-20 425-301-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BELLEVUE WA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.