NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

1 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

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 458
ONVOY, LLC - OR 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
2020-01-17 458-247 0–9 XXXall 10 · 3 holders which blocks → TELNYX LLC 073H EUGENE OR
2020-01-14 458-246 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 ASHLAND OR
2019-10-25 458-245 0–9 XXXall 10 · 3 holders which blocks → ONVOY SPECTRUM, LLC 624H EUGENE OR
2019-10-24 458-241 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - OR 750E ECHO OR
2019-10-24 458-242 0XXX1XXX2XXX3XXX4XXX5XXX6XXX · 2 holders which blocks → ONVOY, LLC - OR 750E IMBLER OR
2019-10-24 458-243 0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - OR 750E GLENDALE OR
2019-10-24 458-244 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - OR 750E MYRTLE CRK OR
2019-10-09 458-710 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - OR 750E COOS BAY OR
2019-09-18 458-240 0–9 XXXall 10 · 5 holders which blocks → EXIANT COMMUNICATIONS LLC 114J EUGENE OR
2019-05-30 458-459 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → ONVOY, LLC - OR 750E BLUE RIVER OR
2019-01-30 458-239 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 EUGENE OR
2018-12-04 458-238 0–9 XXXwhole prefix which blocks → LTE WIRELESS, INC. - OR 379J BANDON OR
2018-10-26 458-899 0–9 XXXall 10 · 5 holders which blocks → INVOXIO INCORPORATED 158H REDMOND OR
2018-10-25 458-300 0–9 XXXall 10 · 5 holders which blocks → INVOXIO INCORPORATED 158H HERMISTON OR
2018-10-25 458-400 0XXX1XXX2XXX4XXX7XXX8XXX9XXX · 6 holders which blocks → INVOXIO INCORPORATED 158H CULVER OR
2018-10-25 458-900 0XXX1XXX4XXX7XXX8XXX9XXX · 5 holders which blocks → INVOXIO INCORPORATED 158H ATHENA OR
2018-10-17 458-355 0–9 XXXwhole prefix which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BEND OR
2018-10-09 458-237 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → ONVOY, LLC - OR 750E ODELL OR
2018-09-21 458-228 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → PEERLESS NETWORK OF OREGON, LLC - OR 157F SUMPTER OR
2018-09-11 458-854 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - OR 750E THE DALLES OR
2018-08-28 458-500 0XXX1XXX2XXX3XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → INVOXIO INCORPORATED 158H BLACKBUTTE OR
2018-08-28 458-800 0–9 XXXall 10 · 6 holders which blocks → INVOXIO INCORPORATED 158H MADRAS OR
2018-08-24 458-600 0–9 XXXall 10 · 5 holders which blocks → INVOXIO INCORPORATED 158H BEND OR
2018-08-06 458-235 0XXX2XXX4XXX9XXX · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OR 3234 BOARDMAN OR
2018-08-06 458-236 0–9 XXXall 10 · 3 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OR 3234 RUFUS OR
2018-07-24 458-658 0–9 XXXall 10 · 5 holders which blocks → INTEGRATED PATH COMMUNICATIONS-OREGON, LLC - OR 826H MEDFORD OR
2018-03-12 458-234 0–9 XXXall 10 · 7 holders which blocks → VONAGE AMERICA LLC 197D EUGENE OR
2017-10-26 458-233 0–9 XXXall 10 · 8 holders which blocks → LEVEL 3 TELECOM OF OREGON, LLC - OR 7537 ALBANY OR
2017-10-19 458-232 0–9 XXXall 10 · 5 holders which blocks → METROPCS, INC. 5562 KLAMATHFLS OR
2017-10-11 458-546 6XXX9XXX · 2 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K YACHATS OR
2017-10-11 458-562 2XXX7XXX9XXX · 3 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K WALDPORT OR
2017-10-11 458-868 5XXX6XXX8XXX9XXX · 4 holders which blocks → CHARTER IP ENABLED SERVICES, LLC 792K SOUTHBEACH OR
2017-09-07 458-777 0XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → ONVOY, LLC - OR 750E JEFFERSON OR
2017-09-07 458-999 0–9 XXXall 10 · 8 holders which blocks → ONVOY, LLC - OR 750E UMATILLA OR
2017-08-21 458-220 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 CENTRAL PT OR
2017-04-11 458-226 0–9 XXXall 10 · 6 holders which blocks → UNITED STATES CELLULAR - OR 6349 MEDFORD OR
2017-03-14 458-209 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 EUGENE OR
2017-03-13 458-221 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 EUGENE OR
2016-12-30 458-223 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 LEBANON OR
2016-09-07 458-231 0–9 XXXall 10 · 6 holders which blocks → QWEST CORPORATION 9638 PRINEVILLE OR
2016-08-15 458-256 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - OR 076F BEND OR
2016-07-29 458-229 0–9 XXXall 10 · 4 holders which blocks → UNITED STATES CELLULAR - OR 6349 GRANTSPASS OR
2016-07-13 458-757 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - OR 750E MILTONFWTR OR
2016-07-06 458-213 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - OR 750E WALLOWA OR
2016-03-18 458-227 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - OR 750E CRATERLAKE OR
2016-03-17 458-204 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - OR 750E TOLEDO OR
2016-03-14 458-675 0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → ONVOY, LLC - OR 750E OAKRIDGE OR
2016-03-04 458-219 0–9 XXXall 10 · 7 holders which blocks → UNITED STATES CELLULAR - OR 6349 HERMISTON OR
2016-02-19 458-225 0–9 XXXall 10 · 6 holders which blocks → ONVOY, LLC - OR 750E MEDFORD OR
2016-02-04 458-292 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - OR 750E BEND OR

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.