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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2006-09-07 425-408-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J BOTHELL WA
2006-09-07 425-408-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J BOTHELL WA
2006-09-07 425-441-0XXX 0000–0999Assigned ONVOY, LLC - WA 483E FALL CITY WA
2006-09-07 425-732-5XXX 5000–5999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 BELLEVUE WA
2006-09-05 425-250-4XXX 4000–4999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 KIRKLAND WA
2006-09-01 425-880-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E AMES LAKE WA
2006-08-25 425-274-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2006-08-25 425-274-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2006-08-17 425-844-5XXX 5000–5999Assigned ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 4324 BOTHELL WA
2006-08-16 425-212-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 EVERETT WA
2006-08-04 425-971-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 EVERETT WA
2006-08-03 425-407-5XXX 5000–5999Assigned ONVOY, LLC - WA 483E EVERETT WA
2006-08-03 425-584-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E MAPLE VLY WA
2006-08-03 425-943-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F BELLEVUE WA
2006-07-26 425-529-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 RENTON WA
2006-07-25 425-367-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 EVERETT WA
2006-07-25 425-367-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 EVERETT WA
2006-07-25 425-367-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 EVERETT WA
2006-07-24 425-572-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J RENTON WA
2006-07-24 425-572-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J RENTON WA
2006-07-21 425-281-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ISSAQUAH WA
2006-07-21 425-281-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ISSAQUAH WA
2006-07-20 425-207-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E RENTON WA
2006-07-19 425-242-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E KIRKLAND WA
2006-07-19 425-698-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 BELLEVUE WA
2006-07-19 425-698-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 BELLEVUE WA
2006-07-19 425-749-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 BELLEVUE WA
2006-07-19 425-749-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 BELLEVUE WA
2006-07-07 425-943-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2006-07-07 425-943-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2006-07-03 425-280-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 EVERETT WA
2006-06-29 425-284-6XXX 6000–6999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 KIRKLAND WA
2006-06-20 425-216-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 KIRKLAND WA
2006-06-20 425-749-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 BELLEVUE WA
2006-06-20 425-749-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 BELLEVUE WA
2006-06-15 425-361-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J HALLS LAKE WA
2006-06-15 425-361-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J HALLS LAKE WA
2006-06-13 425-248-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 HALLS LAKE WA
2006-06-13 425-248-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 HALLS LAKE WA
2006-06-13 425-698-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2006-06-01 425-200-0XXX 0000–0999Assigned ONVOY, LLC - WA 483E ISSAQUAH WA
2006-06-01 425-207-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E RENTON WA
2006-06-01 425-569-0XXX 0000–0999Assigned ONVOY, LLC - WA 483E MAPLE VLY WA
2006-06-01 425-638-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 BELLEVUE WA
2006-06-01 425-698-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E BELLEVUE WA
2006-05-30 425-691-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 BELLEVUE WA
2006-05-30 425-691-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 BELLEVUE WA
2006-05-30 425-691-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 BELLEVUE WA
2006-05-25 425-212-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 EVERETT WA
2006-05-25 425-212-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 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.