NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

2 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 253
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
2009-10-09 253-753-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 TACOMA WA
2009-10-09 253-753-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 TACOMA WA
2009-10-09 253-753-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 TACOMA WA
2009-09-16 253-509-9XXX 9000–9999Assigned ASTOUND BROADBAND, LLC - WA 937F GIG HARBOR WA
2009-09-11 253-355-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 TACOMA WA
2009-09-11 253-666-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 TACOMA WA
2009-09-11 253-666-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 TACOMA WA
2009-09-10 253-343-6XXX 6000–6999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 TACOMA WA
2009-09-09 253-778-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 TACOMAWVLY WA
2009-08-13 253-363-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 TACOMA WA
2009-08-13 253-363-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 TACOMA WA
2009-06-11 253-397-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 AUBURN WA
2009-06-03 253-214-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E DES MOINES WA
2009-06-03 253-242-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E TACOMAWVLY WA
2009-06-03 253-447-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E SUMNER WA
2009-05-07 253-236-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E KENT WA
2009-05-07 253-245-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E AUBURN WA
2009-05-07 253-268-1XXX 1000–1999Assigned ONVOY, LLC - WA 483E PUYALLUP WA
2009-05-07 253-271-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E GRAHAM WA
2009-05-07 253-327-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E TACOMA WA
2009-04-17 253-470-7XXX 7000–7999Assigned LEVEL 3 TELECOM OF WASHINGTON, LLC - WA 7455 SUMNER WA
2009-04-09 253-363-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 TACOMA WA
2009-04-09 253-363-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 TACOMA WA
2009-04-01 253-363-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F TACOMA WA
2009-03-31 253-237-9XXX 9000–9999Assigned ONVOY, LLC - WA 483E DES MOINES WA
2009-03-26 253-236-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J KENT WA
2009-03-16 253-200-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PUYALLUP WA
2009-03-13 253-293-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 AUBURN WA
2009-03-10 253-216-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 KENT WA
2009-03-10 253-235-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J TACOMAWVLY WA
2009-03-10 253-363-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 TACOMA WA
2009-02-26 253-778-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 TACOMAWVLY WA
2009-02-17 253-267-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 TACOMA WA
2009-02-17 253-363-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 TACOMA WA
2009-01-28 253-363-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 TACOMA WA
2009-01-28 253-363-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 TACOMA WA
2009-01-23 253-514-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 GIG HARBOR WA
2009-01-21 253-330-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 TACOMA WA
2009-01-20 253-604-3XXX 3000–3999Assigned QWEST CORPORATION 9638 PUYALLUP WA
2009-01-05 253-234-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F KENT WA
2009-01-05 253-234-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F KENT WA
2009-01-05 253-293-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F AUBURN WA
2009-01-05 253-353-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F TACOMA WA
2009-01-05 253-642-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F DES MOINES WA
2009-01-05 253-642-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F DES MOINES WA
2009-01-05 253-655-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F GRAHAM WA
2009-01-05 253-693-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F PUYALLUP WA
2009-01-05 253-778-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F TACOMAWVLY WA
2009-01-05 253-987-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F SUMNER WA
2008-12-11 253-365-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 TACOMA 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.