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
Clear Download CSV ↓
Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2015-08-04 971-336 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 PORTLAND OR
2015-07-01 971-280 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2015-06-04 971-979 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - OR 076F SHERWOOD OR
2015-06-03 971-808 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - OR 076F PORTLAND OR
2015-05-22 971-719 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 SALEM OR
2015-05-21 971-334 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2015-04-29 971-901 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - OR 076F MCMINNVL OR
2015-04-28 971-328 0–9 XXXall 10 · 6 holders which blocks → BANDWIDTH.COM CLEC, LLC - OR 076F RAINIER OR
2015-04-23 971-470 0–9 XXXall 10 · 3 holders which blocks → BANDWIDTH.COM CLEC, LLC - OR 076F BEAVERTON OR
2015-03-03 971-770 0–9 XXXall 10 · 2 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 BEAVERTON OR
2014-12-12 971-813 0–9 XXXall 10 · 6 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 ST HELENS OR
2014-12-03 971-718 0–9 XXXall 10 · 3 holders which blocks → METROPCS, INC. 5562 SALEM OR
2014-11-12 971-412 0–9 XXXall 10 · 3 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 NEWBERG OR
2014-11-07 971-331 0–9 XXXall 10 · 2 holders which blocks → T-MOBILE USA, INC. 6529 PORTLAND OR
2014-11-06 971-339 0–9 XXXall 10 · 3 holders which blocks → ONVOY, LLC - OR 750E PORTLAND OR
2014-11-05 971-352 0–9 XXXall 10 · 5 holders which blocks → ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7172 PORTLAND OR
2014-11-03 971-716 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 MCMINNVL OR
2014-11-03 971-772 0–9 XXXall 10 · 7 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 WOODBURN OR
2014-10-24 971-985 0–9 XXXwhole prefix which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2014-10-23 971-715 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 AURORA OR
2014-10-15 971-601 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 SEASIDE OR
2014-10-13 971-713 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 BEAVERTON OR
2014-10-01 971-720 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 SALEM OR
2014-10-01 971-915 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OR 3234 SALEM OR
2014-09-19 971-712 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OR 3234 PORTLAND OR
2014-09-10 971-330 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 BEAVERTON OR
2014-08-15 971-278 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 CLATSKANIE OR
2014-08-15 971-283 0–9 XXXall 10 · 5 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 SALEM OR
2014-07-28 971-361 0–9 XXXall 10 · 5 holders which blocks → ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7172 PORTLAND OR
2014-07-28 971-806 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2014-07-22 971-325 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 PORTLAND OR
2014-06-18 971-803 0–9 XXXall 10 · 4 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2014-06-12 971-708 0–9 XXXall 10 · 5 holders which blocks → BANDWIDTH.COM CLEC, LLC - OR 076F BEAVERTON OR
2014-03-04 971-319 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - OR 750E PORTLAND OR
2014-02-20 971-337 0–9 XXXall 10 · 4 holders which blocks → HUNTER CONSTRUCTION, INC. DBA HUNTER COMMS - OR 660C PORTLAND OR
2014-01-27 971-315 0–9 XXXall 10 · 6 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OR 3234 AUMSVLTRNR OR
2014-01-27 971-316 0–9 XXXall 10 · 4 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J GRAND IS OR
2014-01-27 971-318 0–9 XXXall 10 · 5 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J AMITY OR
2014-01-10 971-407 0–9 XXXall 10 · 4 holders which blocks → T-MOBILE USA, INC. 6529 PORTLAND OR
2014-01-08 971-706 0–9 XXXall 10 · 3 holders which blocks → T-MOBILE USA, INC. 6529 MCMINNVL OR
2014-01-02 971-371 0–9 XXXall 10 · 5 holders which blocks → ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 7172 BEAVERTON OR
2013-12-31 971-701 0–9 XXXall 10 · 5 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - OR 3234 SALEM OR
2013-12-26 971-284 0–9 XXXwhole prefix which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2013-12-03 971-314 0–9 XXXall 10 · 5 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 VERNONIA OR
2013-10-17 971-704 0–9 XXXall 10 · 7 holders which blocks → PEERLESS NETWORK OF OREGON, LLC - OR 157F ASTORIA OR
2013-09-19 971-703 0–9 XXXall 10 · 5 holders which blocks → PEERLESS NETWORK OF OREGON, LLC - OR 157F PORTLAND OR
2013-09-16 971-804 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 5820 PORTLAND OR
2013-08-26 971-473 0–9 XXXwhole prefix which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 BEAVERTON OR
2013-06-12 971-801 0–9 XXXall 10 · 5 holders which blocks → NEW CINGULAR WIRELESS PCS, LLC 6010 PORTLAND OR
2013-06-07 971-802 0–9 XXXall 10 · 7 holders which blocks → CENTURYLINK COMMUNICATIONS, LLC 508J SHERIDAN 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.