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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2005-06-20 360-243-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SNOHOMISH WA
2005-06-20 360-282-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SNOHOMISH WA
2005-06-20 360-282-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SNOHOMISH WA
2005-06-20 360-547-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MARYSVILLE WA
2005-06-20 360-547-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MARYSVILLE WA
2005-06-20 360-548-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 MARYSVILLE WA
2005-06-20 360-598-0XXX 0000–0999Assigned ASTOUND BROADBAND, LLC - WA 937F POULSBO WA
2005-06-20 360-631-5XXX 5000–5999Assigned ASTOUND BROADBAND, LLC - WA 937F MARYSVILLE WA
2005-06-20 360-778-4XXX 4000–4999Assigned ASTOUND BROADBAND, LLC - WA 937F WHATCOMCTY WA
2005-06-19 360-635-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 VANCOUVER WA
2005-06-19 360-635-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 VANCOUVER WA
2005-06-19 360-719-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 VANCOUVER WA
2005-06-19 360-719-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 VANCOUVER WA
2005-06-14 360-566-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 VANCOUVER WA
2005-06-09 360-262-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 CHEHALIS WA
2005-06-09 360-388-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 CENTRALIA WA
2005-06-09 360-388-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 CENTRALIA WA
2005-06-08 360-326-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F VANCOUVER WA
2005-06-02 360-306-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 WHATCOMCTY WA
2005-05-31 360-204-5XXX 5000–5999Assigned ASTOUND BROADBAND, LLC - WA 937F SILVERDALE WA
2005-05-31 360-249-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J MONTESANO WA
2005-05-31 360-277-4XXX 4000–4999Assigned ASTOUND BROADBAND, LLC - WA 937F BELFAIR WA
2005-05-31 360-314-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VANCOUVER WA
2005-05-31 360-443-6XXX 6000–6999Assigned ASTOUND BROADBAND, LLC - WA 937F PORT ORCH WA
2005-05-31 360-477-4XXX 4000–4999Assigned ASTOUND BROADBAND, LLC - WA 937F PT ANGELES WA
2005-05-31 360-572-4XXX 4000–4999Assigned ASTOUND BROADBAND, LLC - WA 937F MARYSVILLE WA
2005-05-31 360-630-5XXX 5000–5999Assigned ASTOUND BROADBAND, LLC - WA 937F MT VERNON WA
2005-05-31 360-648-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J OCOSTA WA
2005-05-25 360-967-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 CASTLEROCK WA
2005-05-17 360-314-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 VANCOUVER WA
2005-05-16 360-329-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 PORT ORCH WA
2005-05-16 360-329-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 PORT ORCH WA
2005-05-10 360-707-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 MT VERNON WA
2005-04-29 360-760-5XXX 5000–5999Assigned ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7173 LA CENTER WA
2005-04-28 360-306-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 WHATCOMCTY WA
2005-04-14 360-305-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 WHATCOMCTY WA
2005-04-06 360-270-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LONGVIEW WA
2005-04-01 360-560-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LONGVIEW WA
2005-04-01 360-633-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SILVERDALE WA
2005-04-01 360-633-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 SILVERDALE WA
2005-03-31 360-369-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 BATTLEGRND WA
2005-03-22 360-241-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 VANCOUVER WA
2005-03-22 360-320-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 OAK HARBOR WA
2005-03-22 360-339-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 OLYMPIA WA
2005-03-22 360-339-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 OLYMPIA WA
2005-03-22 360-339-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 OLYMPIA WA
2005-03-22 360-339-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 OLYMPIA WA
2005-03-22 360-339-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 OLYMPIA WA
2005-03-22 360-473-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BREMERTON WA
2005-03-22 360-473-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BREMERTON 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.