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
2011-09-01 360-454-0XXX 0000–0999Assigned COMCAST IP PHONE, LLC 318J MARYSVILLE WA
2011-09-01 360-523-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 CENTRALIA WA
2011-09-01 360-836-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VANCOUVER WA
2011-09-01 360-836-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 VANCOUVER WA
2011-09-01 360-858-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J ROCHESTER WA
2011-08-31 360-544-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J OAK HARBOR WA
2011-08-31 360-836-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J VANCOUVER WA
2011-08-12 360-463-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SHELTON WA
2011-08-12 360-703-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LONGVIEW WA
2011-08-12 360-867-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 OLYMPIA WA
2011-08-12 360-969-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 OAK HARBOR WA
2011-08-11 360-502-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 MARYSVILLE WA
2011-08-09 360-306-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J WHATCOMCTY WA
2011-08-09 360-310-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ABERDEEN WA
2011-08-05 360-633-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 SILVERDALE WA
2011-08-05 360-854-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 MT VERNON WA
2011-07-25 360-529-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 OLYMPIA WA
2011-07-15 360-208-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E SOUTH BEND WA
2011-07-15 360-382-7XXX 7000–7999Assigned ONVOY, LLC - WA 483E PTTOWNSEND WA
2011-07-15 360-648-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E OCOSTA WA
2011-07-15 360-872-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E ORTING WA
2011-07-13 360-966-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 WHATCOMCTY WA
2011-07-12 360-306-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 WHATCOMCTY WA
2011-07-12 360-328-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J SILVERDALE WA
2011-07-06 360-249-9XXX 9000–9999Assigned ONVOY, LLC - WA 483E MONTESANO WA
2011-07-06 360-849-8XXX 8000–8999Assigned ONVOY, LLC - WA 483E CATHLAMET WA
2011-07-01 360-862-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SNOHOMISH WA
2011-06-22 360-200-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - WA 6121 LONGVIEW WA
2011-06-14 360-663-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F CRYSTAL MT WA
2011-06-14 360-857-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F RIDGEFIELD WA
2011-06-13 360-207-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F PT ANGELES WA
2011-06-13 360-207-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F PT ANGELES WA
2011-06-13 360-358-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F SHELTON WA
2011-06-13 360-529-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F OLYMPIA WA
2011-06-13 360-602-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F PORT ORCH WA
2011-06-13 360-602-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F PORT ORCH WA
2011-06-09 360-342-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F BATTLEGRND WA
2011-06-09 360-362-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F BREMERTON WA
2011-06-09 360-436-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F MARYSVILLE WA
2011-06-09 360-467-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E SNOHOMISH WA
2011-06-09 360-467-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SNOHOMISH WA
2011-06-09 360-499-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F OAK HARBOR WA
2011-06-09 360-553-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 VANCOUVER WA
2011-06-09 360-562-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F LONGVIEW WA
2011-06-09 360-599-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 WHATCOMCTY WA
2011-06-09 360-599-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 WHATCOMCTY WA
2011-06-09 360-599-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 WHATCOMCTY WA
2011-06-09 360-747-4XXX 4000–4999Assigned METROPCS, INC. 5562 LONGVIEW WA
2011-06-09 360-836-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 VANCOUVER WA
2011-06-09 360-865-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SILVERDALE 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.