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
2007-05-10 425-525-6XXX 6000–6999Assigned QWEST CORPORATION 9638 RENTON WA
2007-05-09 425-242-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E KIRKLAND WA
2007-05-09 425-315-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E EVERETT WA
2007-05-09 425-332-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E SILVERLAKE WA
2007-05-09 425-563-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E HALLS LAKE WA
2007-05-09 425-686-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E BOTHELL WA
2007-05-08 425-918-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 HALLS LAKE WA
2007-05-04 425-463-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2007-04-17 425-381-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 BOTHELL WA
2007-04-13 425-301-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2007-04-13 425-691-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2007-04-13 425-691-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2007-02-20 425-291-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F RENTON WA
2007-02-16 425-284-7XXX 7000–7999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 KIRKLAND WA
2007-02-16 425-377-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 EVERETT WA
2007-02-16 425-377-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 EVERETT WA
2007-02-16 425-377-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 EVERETT WA
2007-02-16 425-377-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 EVERETT WA
2007-02-12 425-420-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BOTHELL WA
2007-02-12 425-420-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BOTHELL WA
2007-02-12 425-949-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J BOTHELL WA
2007-02-12 425-949-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J BOTHELL WA
2007-02-09 425-381-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BOTHELL WA
2007-02-06 425-441-9XXX 9000–9999Assigned ONVOY, LLC - WA 483E FALL CITY WA
2007-02-06 425-880-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E AMES LAKE WA
2007-02-05 425-250-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F KIRKLAND WA
2007-02-02 425-302-0XXX 0000–0999Assigned ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 4324 BOTHELL WA
2007-02-02 425-302-1XXX 1000–1999Assigned ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 4324 BOTHELL WA
2007-02-02 425-302-2XXX 2000–2999Assigned ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 4324 BOTHELL WA
2007-02-02 425-302-3XXX 3000–3999Assigned ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 4324 BOTHELL WA
2007-02-02 425-302-4XXX 4000–4999Assigned ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 4324 BOTHELL WA
2007-02-02 425-302-5XXX 5000–5999Assigned ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 4324 BOTHELL WA
2007-02-02 425-302-6XXX 6000–6999Assigned ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 4324 BOTHELL WA
2007-02-02 425-302-7XXX 7000–7999Assigned ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 4324 BOTHELL WA
2007-02-02 425-302-8XXX 8000–8999Assigned ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 4324 BOTHELL WA
2007-02-02 425-302-9XXX 9000–9999Assigned ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 4324 BOTHELL WA
2007-01-25 425-329-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 HALLS LAKE WA
2007-01-25 425-970-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J RENTON WA
2007-01-22 425-530-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 EVERETT WA
2007-01-22 425-530-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 EVERETT WA
2007-01-22 425-530-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 EVERETT WA
2007-01-22 425-530-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 EVERETT WA
2007-01-22 425-967-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J HALLS LAKE WA
2007-01-22 425-967-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J HALLS LAKE WA
2007-01-12 425-502-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2007-01-09 425-264-9XXX 9000–9999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 RENTON WA
2006-12-18 425-333-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E CARNATION WA
2006-12-15 425-457-7XXX 7000–7999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 BELLEVUE WA
2006-12-14 425-368-9XXX 9000–9999Assigned ONVOY, LLC - WA 483E BOTHELL WA
2006-12-14 425-780-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BOTHELL 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.