NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

14 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 971
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 8
ONVOY, LLC - OR 2
T-MOBILE USA, INC. 1
NEW CINGULAR WIRELESS PCS, LLC 1
EXIANT COMMUNICATIONS LLC 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
2018-10-16 971-355-4XXX 4000–4999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SALEM OR
2018-10-16 971-355-5XXX 5000–5999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SALEM OR
2018-10-16 971-355-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SALEM OR
2018-10-16 971-355-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SALEM OR
2018-10-16 971-355-8XXX 8000–8999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SALEM OR
2018-10-16 971-355-9XXX 9000–9999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SALEM OR
2018-10-11 971-329-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BEAVERTON OR
2018-10-11 971-329-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BEAVERTON OR
2018-10-11 971-335-3XXX 3000–3999Assigned COMCAST IP PHONE, LLC 318J CLACKAMAS OR
2018-10-09 971-332-4XXX 4000–4999Assigned TELNYX LLC 073H SALEM OR
2018-10-08 971-978-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2018-10-08 971-990-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2018-10-08 971-990-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2018-10-08 971-990-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2018-10-08 971-990-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2018-10-08 971-990-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2018-10-08 971-990-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2018-10-04 971-323-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PORTLAND OR
2018-10-02 971-247-6XXX 6000–6999Assigned TELNYX LLC 073H NORTH PL OR
2018-10-02 971-286-4XXX 4000–4999Assigned TELNYX LLC 073H WARRENTON OR
2018-10-02 971-289-8XXX 8000–8999Assigned TELNYX LLC 073H DALLAS OR
2018-10-02 971-326-9XXX 9000–9999Assigned TELNYX LLC 073H SEASIDE OR
2018-10-02 971-399-8XXX 8000–8999Assigned TELNYX LLC 073H FALLS CITY OR
2018-10-02 971-772-3XXX 3000–3999Assigned TELNYX LLC 073H WOODBURN OR
2018-10-02 971-799-8XXX 8000–8999Assigned TELNYX LLC 073H WESTPORT OR
2018-09-21 971-323-2XXX 2000–2999Assigned METROPCS, INC. 5562 PORTLAND OR
2018-09-21 971-326-1XXX 1000–1999Assigned METROPCS, INC. 5562 SEASIDE OR
2018-09-21 971-517-1XXX 1000–1999Assigned METROPCS, INC. 5562 MCMINNVL OR
2018-09-21 971-900-1XXX 1000–1999Assigned METROPCS, INC. 5562 SALEM OR
2018-09-21 971-900-2XXX 2000–2999Assigned METROPCS, INC. 5562 SALEM OR
2018-09-21 971-900-3XXX 3000–3999Assigned METROPCS, INC. 5562 SALEM OR
2018-09-19 971-299-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F GOVENTCAMP OR
2018-09-19 971-323-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F PORTLAND OR
2018-09-19 971-332-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F SALEM OR
2018-09-19 971-715-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - OR 076F AURORA OR
2018-09-13 971-332-2XXX 2000–2999Assigned METROPCS, INC. 5562 SALEM OR
2018-09-13 971-335-6XXX 6000–6999Assigned METROPCS, INC. 5562 CLACKAMAS OR
2018-09-13 971-341-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 TILLAMOOK OR
2018-09-13 971-341-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 TILLAMOOK OR
2018-09-12 971-399-9XXX 9000–9999Assigned INVOXIO INCORPORATED 158H FALLS CITY OR
2018-09-10 971-332-5XXX 5000–5999Assigned COMCAST IP PHONE, LLC 318J SALEM OR
2018-09-07 971-799-9XXX 9000–9999Assigned INVOXIO INCORPORATED 158H WESTPORT OR
2018-09-05 971-286-6XXX 6000–6999Assigned INVOXIO INCORPORATED 158H WARRENTON OR
2018-09-05 971-289-9XXX 9000–9999Assigned INVOXIO INCORPORATED 158H DALLAS OR
2018-09-05 971-308-2XXX 2000–2999Assigned INVOXIO INCORPORATED 158H CANNON BCH OR
2018-09-05 971-328-9XXX 9000–9999Assigned PEERLESS NETWORK OF OREGON, LLC - OR 157F RAINIER OR
2018-09-05 971-335-5XXX 5000–5999Assigned INVOXIO INCORPORATED 158H CLACKAMAS OR
2018-09-05 971-720-1XXX 1000–1999Assigned COMCAST IP PHONE, LLC 318J SALEM OR
2018-09-05 971-757-7XXX 7000–7999Assigned INVOXIO INCORPORATED 158H ST HELENS OR
2018-08-24 971-900-0XXX 0000–0999Assigned INVOXIO INCORPORATED 158H SALEM OR

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.