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 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
2011-07-21 425-249-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J EVERETT WA
2011-07-15 425-905-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 EVERETT WA
2011-07-12 425-505-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BELLEVUE WA
2011-07-11 425-312-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 EVERETT WA
2011-07-11 425-409-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 HALLS LAKE WA
2011-07-11 425-471-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 BOTHELL WA
2011-07-11 425-505-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 BELLEVUE WA
2011-07-01 425-394-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ISSAQUAH WA
2011-07-01 425-505-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BELLEVUE WA
2011-07-01 425-505-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BELLEVUE WA
2011-07-01 425-919-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RENTON WA
2011-06-22 425-366-2XXX 2000–2999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 EVERETT WA
2011-06-22 425-366-3XXX 3000–3999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 EVERETT WA
2011-06-22 425-366-5XXX 5000–5999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 EVERETT WA
2011-06-22 425-505-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J BELLEVUE WA
2011-06-15 425-285-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J KIRKLAND WA
2011-06-09 425-409-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 HALLS LAKE WA
2011-06-09 425-905-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 EVERETT WA
2011-06-09 425-905-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 EVERETT WA
2011-06-09 425-905-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 EVERETT WA
2011-06-09 425-931-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 EVERETT WA
2011-06-08 425-292-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J NORTH BEND WA
2011-06-08 425-298-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J KIRKLAND WA
2011-06-07 425-622-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EVERETT WA
2011-06-07 425-622-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EVERETT WA
2011-06-07 425-919-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 RENTON WA
2011-06-06 425-354-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 BOTHELL WA
2011-06-03 425-505-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BELLEVUE WA
2011-06-03 425-505-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BELLEVUE WA
2011-06-03 425-505-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BELLEVUE WA
2011-05-19 425-298-2XXX 2000–2999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 KIRKLAND WA
2011-05-19 425-952-3XXX 3000–3999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 KIRKLAND WA
2011-05-10 425-434-9XXX 9000–9999Assigned ONVOY, LLC - WA 483E SNOQUMPASS WA
2011-05-10 425-786-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 BELLEVUE WA
2011-05-06 425-623-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 BELLEVUE WA
2011-05-06 425-786-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 BELLEVUE WA
2011-04-28 425-623-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2011-04-28 425-623-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2011-04-25 425-549-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 CARNATION WA
2011-04-23 425-292-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 NORTH BEND WA
2011-04-23 425-441-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 FALL CITY WA
2011-04-19 425-622-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EVERETT WA
2011-04-19 425-622-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EVERETT WA
2011-04-19 425-623-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BELLEVUE WA
2011-04-19 425-623-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BELLEVUE WA
2011-04-18 425-623-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2011-04-18 425-623-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2011-04-12 425-496-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E RENTON WA
2011-04-12 425-939-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E BOTHELL WA
2011-04-07 425-412-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 HALLS LAKE 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.