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
2016-10-05 360-814-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 MT VERNON WA
2016-09-30 360-218-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LONGVIEW WA
2016-09-30 360-672-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 OAK HARBOR WA
2016-09-27 360-559-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F CENTRALIA WA
2016-09-27 360-559-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F CENTRALIA WA
2016-09-27 360-559-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F CENTRALIA WA
2016-09-23 360-218-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F LONGVIEW WA
2016-09-23 360-218-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F LONGVIEW WA
2016-09-23 360-218-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F LONGVIEW WA
2016-09-23 360-519-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F PORT ORCH WA
2016-09-23 360-519-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F PORT ORCH WA
2016-09-23 360-519-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F PORT ORCH WA
2016-09-23 360-639-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F OAK HARBOR WA
2016-09-23 360-639-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F OAK HARBOR WA
2016-09-23 360-682-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F OAK HARBOR WA
2016-09-21 360-660-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ABERDEEN WA
2016-09-21 360-660-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ABERDEEN WA
2016-09-21 360-728-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BREMERTON WA
2016-09-15 360-602-8XXX 8000–8999Assigned PAETEC ITEL, LLC 829J PORT ORCH WA
2016-09-14 360-218-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 LONGVIEW WA
2016-09-14 360-552-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 5812 BELFAIR WA
2016-09-13 360-799-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J SNOHOMISH WA
2016-09-07 360-502-7XXX 7000–7999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F MARYSVILLE WA
2016-09-07 360-592-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 WHATCOMCTY WA
2016-09-07 360-842-8XXX 8000–8999Assigned PEERLESS NETWORK OF WASHINGTON, LLC - WA 159F BREMERTON WA
2016-09-06 360-519-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PORT ORCH WA
2016-09-06 360-994-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 POULSBO WA
2016-08-17 360-768-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J VANCOUVER WA
2016-08-09 360-522-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 OLYMPIA WA
2016-08-09 360-572-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MARYSVILLE WA
2016-08-08 360-842-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 BREMERTON WA
2016-08-02 360-594-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 WHATCOMCTY WA
2016-08-02 360-712-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ABERDEEN WA
2016-07-20 360-559-6XXX 6000–6999Assigned ONVOY, LLC - WA 483E CENTRALIA WA
2016-07-19 360-227-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F BELFAIR WA
2016-07-19 360-229-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F SHELTON WA
2016-07-19 360-727-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F RIDGEFIELD WA
2016-07-15 360-622-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 SAN JUAN WA
2016-07-14 360-522-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E OLYMPIA WA
2016-07-14 360-712-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E ABERDEEN WA
2016-07-14 360-726-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E VANCOUVER WA
2016-07-14 360-842-2XXX 2000–2999Assigned ONVOY, LLC - WA 483E BREMERTON WA
2016-07-13 360-900-4XXX 4000–4999Assigned ONVOY, LLC - WA 483E SILVERDALE WA
2016-06-27 360-522-7XXX 7000–7999Assigned METROPCS, INC. 5562 OLYMPIA WA
2016-06-24 360-667-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BATTLEGRND WA
2016-06-24 360-712-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ABERDEEN WA
2016-06-23 360-218-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F LONGVIEW WA
2016-06-23 360-499-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F OAK HARBOR WA
2016-06-23 360-503-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 MT VERNON WA
2016-06-23 360-602-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F PORT ORCH 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.