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
2008-07-11 425-449-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BELLEVUE WA
2008-07-11 425-449-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BELLEVUE WA
2008-07-11 425-449-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BELLEVUE WA
2008-07-11 425-449-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BELLEVUE WA
2008-07-09 425-516-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2008-07-09 425-516-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2008-07-08 425-207-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J RENTON WA
2008-07-08 425-212-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J EVERETT WA
2008-07-08 425-263-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J EVERETT WA
2008-07-03 425-381-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BOTHELL WA
2008-07-03 425-381-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BOTHELL WA
2008-07-03 425-892-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BOTHELL WA
2008-07-03 425-892-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BOTHELL WA
2008-07-03 425-892-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BOTHELL WA
2008-06-20 425-999-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2008-06-10 425-903-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 EVERETT WA
2008-06-10 425-903-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 EVERETT WA
2008-06-06 425-224-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SILVERLAKE WA
2008-05-23 425-270-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E ISSAQUAH WA
2008-05-23 425-493-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E EVERETT WA
2008-05-22 425-516-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BELLEVUE WA
2008-05-22 425-516-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BELLEVUE WA
2008-05-22 425-999-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BELLEVUE WA
2008-05-22 425-999-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BELLEVUE WA
2008-05-21 425-440-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 BELLEVUE WA
2008-05-21 425-440-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E BELLEVUE WA
2008-05-21 425-440-9XXX 9000–9999Assigned ONVOY, LLC - WA 483E BELLEVUE WA
2008-05-15 425-381-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 BOTHELL WA
2008-05-12 425-636-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - WA 7274 KIRKLAND WA
2008-05-02 425-440-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 BELLEVUE WA
2008-05-01 425-440-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 BELLEVUE WA
2008-04-24 425-492-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BOTHELL WA
2008-04-24 425-492-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BOTHELL WA
2008-04-24 425-492-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BOTHELL WA
2008-04-18 425-361-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 HALLS LAKE WA
2008-04-03 425-242-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E KIRKLAND WA
2008-04-03 425-493-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E EVERETT WA
2008-03-26 425-295-3XXX 3000–3999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 ISSAQUAH WA
2008-03-18 425-582-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J HALLS LAKE WA
2008-03-18 425-582-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J HALLS LAKE WA
2008-03-13 425-242-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 KIRKLAND WA
2008-03-05 425-322-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 EVERETT WA
2008-03-05 425-322-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 EVERETT WA
2008-03-03 425-516-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 BELLEVUE WA
2008-02-25 425-329-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 HALLS LAKE WA
2008-02-22 425-636-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J KIRKLAND WA
2008-02-22 425-686-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BOTHELL WA
2008-02-22 425-686-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BOTHELL WA
2008-02-22 425-686-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BOTHELL WA
2008-02-19 425-952-4XXX 4000–4999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 KIRKLAND 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.