NumberResearch Membership · Data 09/19/2026

Recent prefix assignments

1 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.

Most active assignees, last 30 days — NPA 971
NEW CINGULAR WIRELESS PCS, 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 NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2021-01-28 971-393 0–9 XXXall 10 · 4 holders which blocks → SKYE TELECOM LLC DBA SKYETEL 622J PORTLAND OR
2021-01-27 971-392 0–9 XXXall 10 · 2 holders which blocks → STRATUS NETWORKS 495J BEAVERTON OR
2021-01-15 971-390 0XXX1XXX2XXX4XXX5XXX · 4 holders which blocks → ONVOY, LLC - OR 750E JEWELL OR
2021-01-15 971-391 2XXX5XXX7XXX · 2 holders which blocks → ONVOY, LLC - OR 750E ROCKAWAY OR
2020-12-16 971-389 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 TILLAMOOK OR
2020-12-04 971-387 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → T-MOBILE USA, INC. 6529 MCMINNVL OR
2020-11-06 971-571 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - OR 750E GRESHAM OR
2020-11-04 971-385 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - OR 076F NEWBERG OR
2020-09-18 971-895 0–9 XXXall 10 · 4 holders which blocks → TWILIO INTERNATIONAL, INC. 506J PORTLAND OR
2020-09-17 971-384 0–9 XXXall 10 · 5 holders which blocks → COMCAST IP PHONE, LLC 318J BEAVERTON OR
2020-09-16 971-383 0–9 XXXall 10 · 3 holders which blocks → COMCAST IP PHONE, LLC 318J PORTLAND OR
2020-09-09 971-381 0–9 XXXall 10 · 4 holders which blocks → VONAGE AMERICA LLC 197D CLACKAMAS OR
2020-09-09 971-382 0–9 XXXall 10 · 4 holders which blocks → VONAGE AMERICA LLC 197D SALEM OR
2020-07-28 971-842 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → FRACTEL, LLC 965H ST HELENS OR
2020-07-28 971-977 0–9 XXXall 10 · 3 holders which blocks → FRACTEL, LLC 965H TILLAMOOK OR
2020-07-14 971-465 0–9 XXXall 10 · 9 holders which blocks → FRACTEL, LLC 965H DALLAS OR
2020-07-14 971-758 0XXX1XXX4XXX5XXX6XXX8XXX · 4 holders which blocks → FRACTEL, LLC 965H CARLTON OR
2020-07-14 971-946 3XXX4XXX · 2 holders which blocks → FRACTEL, LLC 965H ST PAUL OR
2020-07-10 971-380 0–9 XXXall 10 · 4 holders which blocks → CSC WIRELESS, LLC 425J PORTLAND OR
2020-06-18 971-379 0–9 XXXall 10 · 3 holders which blocks → HD CARRIER LLC 321J PORTLAND OR
2020-05-04 971-378 0–9 XXXall 10 · 3 holders which blocks → NUSO, LLC 478J PORTLAND OR
2020-04-29 971-376 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - OR 076F CLATSKANIE OR
2020-04-06 971-771 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - OR 750E DAYTON OR
2020-04-06 971-791 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - OR 750E BAY CITY OR
2020-04-03 971-372 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 STAYTON OR
2020-04-03 971-375 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 SALEM OR
2020-04-02 971-374 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - OR 076F SALEM OR
2020-04-01 971-369 0–9 XXXall 10 · 6 holders which blocks → PAETEC ITEL, LLC 829J PORTLAND OR
2020-02-10 971-368 0–9 XXXall 10 · 6 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 AUMSVLTRNR OR
2020-01-27 971-268 0–9 XXXall 10 · 4 holders which blocks → METROPCS, INC. 5562 BEAVERTON OR
2020-01-27 971-671 0XXX1XXX4XXX6XXX7XXX · 4 holders which blocks → ONVOY, LLC - OR 750E KNAPPA OR
2019-10-24 971-364 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → ONVOY, LLC - OR 750E CHARBONNEU OR
2019-10-24 971-365 1XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → ONVOY, LLC - OR 750E DETROIT OR
2019-10-24 971-366 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - OR 750E BEAVER OR
2019-10-24 971-367 0XXX1XXX2XXX3XXX5XXX6XXX8XXX9XXX · 4 holders which blocks → ONVOY, LLC - OR 750E HOOD LAND OR
2019-10-09 971-910 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H BEAVERTON OR
2019-09-18 971-359 0–9 XXXall 10 · 3 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 BEAVER CRK OR
2019-09-18 971-362 0–9 XXXall 10 · 3 holders which blocks → EXIANT COMMUNICATIONS LLC 114J PORTLAND OR
2019-09-12 971-710 0–9 XXXall 10 · 4 holders which blocks → ONVOY SPECTRUM, LLC 624H PORTLAND OR
2019-07-18 971-358 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - OR 076F PORTLAND OR
2019-07-15 971-357 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - OR 076F PORTLAND OR
2019-07-12 971-356 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 CLACKAMAS OR
2019-07-09 971-354 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 TILLAMOOK OR
2019-07-08 971-353 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 CLACKAMAS OR
2019-02-28 971-348 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 BEAVERTON OR
2018-12-04 971-346 0–9 XXXall 10 · 5 holders which blocks → COMCAST IP PHONE, LLC 318J PORTLAND OR
2018-11-19 971-345 0–9 XXXall 10 · 7 holders which blocks → AIRESPRING, INC. 996H SALEM OR
2018-11-02 971-342 0–9 XXXall 10 · 7 holders which blocks → PEERLESS NETWORK OF OREGON, LLC - OR 157F CANNON BCH OR
2018-10-25 971-899 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 7 holders which blocks → INVOXIO INCORPORATED 158H RAINIER OR
2018-10-25 971-988 0–9 XXXall 10 · 7 holders which blocks → INVOXIO INCORPORATED 158H ASTORIA OR

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.