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 360
EXIANT COMMUNICATIONS LLC 1
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 1
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
2005-03-22 360-593-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ABERDEEN WA
2005-03-21 360-872-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J ORTING WA
2005-03-21 360-881-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J KINGSTON WA
2005-03-21 360-889-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J SO PRAIRIE WA
2005-03-16 360-204-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 SILVERDALE WA
2005-03-16 360-204-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SILVERDALE WA
2005-03-15 360-631-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 MARYSVILLE WA
2005-03-14 360-566-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 VANCOUVER WA
2005-03-09 360-333-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 MT VERNON WA
2005-03-09 360-535-2XXX 2000–2999Assigned METROPCS, INC. 5562 SILVERDALE WA
2005-03-09 360-775-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 PT ANGELES WA
2005-03-09 360-775-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 PT ANGELES WA
2005-03-09 360-807-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J CENTRALIA WA
2005-03-09 360-861-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J ELMA WA
2005-03-09 360-868-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SHELTON WA
2005-03-09 360-868-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SHELTON WA
2005-03-09 360-875-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J SOUTH BEND WA
2005-03-03 360-713-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VANCOUVER WA
2005-03-03 360-713-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VANCOUVER WA
2005-03-01 360-268-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J GRAYHARBCO WA
2005-03-01 360-588-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J MT VERNON WA
2005-03-01 360-612-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J ABERDEEN WA
2005-03-01 360-625-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J ENUMCLAW WA
2005-03-01 360-633-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J SILVERDALE WA
2005-03-01 360-691-9XXX 9000–9999Assigned COMCAST IP PHONE, LLC 318J MARYSVILLE WA
2005-03-01 360-720-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J OAK HARBOR WA
2005-03-01 360-761-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J BUCKLEY WA
2005-03-01 360-813-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J BREMERTON WA
2005-03-01 360-858-7XXX 7000–7999Assigned COMCAST IP PHONE, LLC 318J ROCHESTER WA
2005-03-01 360-863-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J SNOHOMISH WA
2005-03-01 360-868-2XXX 2000–2999Assigned COMCAST IP PHONE, LLC 318J SHELTON WA
2005-03-01 360-873-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J MT VERNON WA
2005-03-01 360-886-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J BLACKDIMND WA
2005-03-01 360-899-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J MT VERNON WA
2005-03-01 360-918-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J OLYMPIA WA
2005-03-01 360-925-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J MARYSVILLE WA
2005-03-01 360-996-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J CHEHALIS WA
2005-02-24 360-388-9XXX 9000–9999Assigned QWEST CORPORATION 9638 CENTRALIA WA
2005-02-24 360-799-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SNOHOMISH WA
2005-02-24 360-799-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SNOHOMISH WA
2005-02-22 360-359-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 OLYMPIA WA
2005-02-22 360-359-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 OLYMPIA WA
2005-02-22 360-359-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 OLYMPIA WA
2005-02-22 360-359-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 OLYMPIA WA
2005-02-22 360-464-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 OLYMPIA WA
2005-02-18 360-450-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 VANCOUVER WA
2005-02-18 360-450-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 VANCOUVER WA
2005-02-18 360-450-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 VANCOUVER WA
2005-02-18 360-483-3XXX 3000–3999Assigned ONVOY, LLC - WA 483E WHATCOMCTY WA
2005-02-18 360-639-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 OAK HARBOR 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.