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
2006-05-25 425-614-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BELLEVUE WA
2006-05-17 425-679-5XXX 5000–5999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 BELLEVUE WA
2006-05-17 425-679-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J BELLEVUE WA
2006-05-16 425-374-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J EVERETT WA
2006-05-16 425-374-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J EVERETT WA
2006-05-08 425-647-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2006-05-08 425-647-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2006-05-08 425-679-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2006-05-05 425-281-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ISSAQUAH WA
2006-05-04 425-205-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BOTHELL WA
2006-05-04 425-225-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J SILVERLAKE WA
2006-05-04 425-242-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J KIRKLAND WA
2006-05-04 425-242-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J KIRKLAND WA
2006-05-03 425-212-5XXX 5000–5999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 EVERETT WA
2006-04-19 425-233-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2006-04-17 425-328-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EVERETT WA
2006-04-17 425-328-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EVERETT WA
2006-04-14 425-374-5XXX 5000–5999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 EVERETT WA
2006-04-14 425-698-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BELLEVUE WA
2006-04-14 425-698-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BELLEVUE WA
2006-04-14 425-698-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BELLEVUE WA
2006-04-11 425-367-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 EVERETT WA
2006-04-11 425-367-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 EVERETT WA
2006-04-03 425-284-5XXX 5000–5999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 KIRKLAND WA
2006-03-31 425-286-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J BOTHELL WA
2006-03-30 425-421-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 KIRKLAND WA
2006-03-30 425-421-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 KIRKLAND WA
2006-03-30 425-421-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 KIRKLAND WA
2006-03-30 425-421-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 KIRKLAND WA
2006-03-30 425-421-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 KIRKLAND WA
2006-03-30 425-421-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 KIRKLAND WA
2006-03-30 425-421-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 KIRKLAND WA
2006-03-30 425-421-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 KIRKLAND WA
2006-03-30 425-421-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 KIRKLAND WA
2006-03-30 425-421-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 KIRKLAND WA
2006-03-28 425-749-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2006-03-27 425-358-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 MAPLE VLY WA
2006-03-22 425-678-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J HALLS LAKE WA
2006-03-14 425-321-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SILVERLAKE WA
2006-03-08 425-250-3XXX 3000–3999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 KIRKLAND WA
2006-03-08 425-286-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 BOTHELL WA
2006-03-08 425-590-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2006-03-08 425-919-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RENTON WA
2006-03-03 425-408-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BOTHELL WA
2006-03-03 425-408-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BOTHELL WA
2006-02-16 425-591-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2006-02-15 425-533-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2006-01-31 425-286-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 BOTHELL WA
2006-01-25 425-533-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2006-01-24 425-315-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 EVERETT 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.