NumberResearchRecent thousands-block assignments
7 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026
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 503
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
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2009-07-20 | 503-707-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | BEAVERTON | OR |
| 2009-07-10 | 503-893-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | PORTLAND | OR |
| 2009-07-10 | 503-964-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | PORTLAND | OR |
| 2009-07-08 | 503-278-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | PORTLAND | OR |
| 2009-07-02 | 503-446-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PORTLAND | OR |
| 2009-06-29 | 503-388-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PORTLAND | OR |
| 2009-06-29 | 503-388-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PORTLAND | OR |
| 2009-06-22 | 503-600-0XXX | 0000–0999 | Assigned | ASTOUND BROADBAND, LLC - OR | 936F | MOLALLA | OR |
| 2009-06-22 | 503-800-0XXX | 0000–0999 | Assigned | ASTOUND BROADBAND, LLC - OR | 936F | GERVAIS | OR |
| 2009-06-22 | 503-900-0XXX | 0000–0999 | Assigned | ASTOUND BROADBAND, LLC - OR | 936F | LYONS | OR |
| 2009-06-22 | 503-979-0XXX | 0000–0999 | Assigned | ASTOUND BROADBAND, LLC - OR | 936F | STAYTON | OR |
| 2009-06-22 | 503-996-1XXX | 1000–1999 | Assigned | ASTOUND BROADBAND, LLC - OR | 936F | MOUNTANGEL | OR |
| 2009-06-19 | 503-278-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - OR | 3234 | PORTLAND | OR |
| 2009-06-16 | 503-479-0XXX | 0000–0999 | Assigned | ASTOUND BROADBAND, LLC - OR | 936F | CLACKAMAS | OR |
| 2009-06-16 | 503-482-0XXX | 0000–0999 | Assigned | ASTOUND BROADBAND, LLC - OR | 936F | STFRD-SNDY | OR |
| 2009-06-16 | 503-564-9XXX | 9000–9999 | Assigned | ASTOUND BROADBAND, LLC - OR | 936F | HOOD LAND | OR |
| 2009-06-16 | 503-592-9XXX | 9000–9999 | Assigned | ASTOUND BROADBAND, LLC - OR | 936F | CANBYNEEDY | OR |
| 2009-06-16 | 503-676-8XXX | 8000–8999 | Assigned | ASTOUND BROADBAND, LLC - OR | 936F | GRESHAM | OR |
| 2009-06-16 | 503-743-1XXX | 1000–1999 | Assigned | ASTOUND BROADBAND, LLC - OR | 936F | AUMSVLTRNR | OR |
| 2009-06-16 | 503-776-9XXX | 9000–9999 | Assigned | ASTOUND BROADBAND, LLC - OR | 936F | AURORA | OR |
| 2009-06-16 | 503-843-9XXX | 9000–9999 | Assigned | ASTOUND BROADBAND, LLC - OR | 936F | SHERIDAN | OR |
| 2009-06-16 | 503-874-4XXX | 4000–4999 | Assigned | ASTOUND BROADBAND, LLC - OR | 936F | SILVERTON | OR |
| 2009-06-16 | 503-876-9XXX | 9000–9999 | Assigned | ASTOUND BROADBAND, LLC - OR | 936F | WILLAMINA | OR |
| 2009-06-16 | 503-879-7XXX | 7000–7999 | Assigned | ASTOUND BROADBAND, LLC - OR | 936F | GRANDRONDE | OR |
| 2009-06-16 | 503-897-6XXX | 6000–6999 | Assigned | ASTOUND BROADBAND, LLC - OR | 936F | MILL CITY | OR |
| 2009-06-16 | 503-983-9XXX | 9000–9999 | Assigned | ASTOUND BROADBAND, LLC - OR | 936F | SALEM | OR |
| 2009-06-04 | 503-902-0XXX | 0000–0999 | Assigned | ASTOUND BROADBAND, LLC - OR | 936F | WOODBURN | OR |
| 2009-06-01 | 503-583-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MCMINNVL | OR |
| 2009-05-27 | 503-214-4XXX | 4000–4999 | Assigned | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | 7172 | BEAVERTON | OR |
| 2009-05-07 | 503-575-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | PORTLAND | OR |
| 2009-05-07 | 503-686-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | BEAVERTON | OR |
| 2009-05-07 | 503-686-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | BEAVERTON | OR |
| 2009-05-07 | 503-991-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | SALEM | OR |
| 2009-04-15 | 503-575-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - OR | 3234 | PORTLAND | OR |
| 2009-04-09 | 503-858-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | BEAVERTON | OR |
| 2009-04-09 | 503-858-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | BEAVERTON | OR |
| 2009-04-06 | 503-388-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PORTLAND | OR |
| 2009-04-06 | 503-500-5XXX | 5000–5999 | Assigned | BANDWIDTH.COM CLEC, LLC - OR | 076F | PORTLAND | OR |
| 2009-04-02 | 503-847-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PORTLAND | OR |
| 2009-04-02 | 503-847-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PORTLAND | OR |
| 2009-04-02 | 503-847-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PORTLAND | OR |
| 2009-04-02 | 503-847-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PORTLAND | OR |
| 2009-04-02 | 503-847-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PORTLAND | OR |
| 2009-04-02 | 503-847-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PORTLAND | OR |
| 2009-04-01 | 503-462-7XXX | 7000–7999 | Assigned | ONVOY, LLC - OR | 750E | CLACKAMAS | OR |
| 2009-03-31 | 503-427-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | STFRD-SNDY | OR |
| 2009-03-30 | 503-878-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - OR | 076F | STFRD-SNDY | OR |
| 2009-03-27 | 503-208-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | PORTLAND | OR |
| 2009-03-27 | 503-208-3XXX | 3000–3999 | Assigned | COMCAST IP PHONE, LLC | 318J | PORTLAND | OR |
| 2009-03-12 | 503-983-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | 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.