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 |
|---|---|---|---|---|---|---|---|
| 2008-09-04 | 503-386-7XXX | 7000–7999 | Assigned | ONVOY, LLC - OR | 750E | KNAPPA | OR |
| 2008-09-04 | 503-505-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | PORTLAND | OR |
| 2008-09-04 | 503-505-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | PORTLAND | OR |
| 2008-08-22 | 503-568-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PORTLAND | OR |
| 2008-08-22 | 503-755-7XXX | 7000–7999 | Assigned | ONVOY, LLC - OR | 750E | JEWELL | OR |
| 2008-08-21 | 503-272-7XXX | 7000–7999 | Assigned | ONVOY, LLC - OR | 750E | GOVENTCAMP | OR |
| 2008-08-21 | 503-694-7XXX | 7000–7999 | Assigned | ONVOY, LLC - OR | 750E | CHARBONNEU | OR |
| 2008-08-14 | 503-912-5XXX | 5000–5999 | Assigned | PAETEC ITEL, LLC | 829J | GRESHAM | OR |
| 2008-08-11 | 503-468-4XXX | 4000–4999 | Assigned | ONVOY, LLC - OR | 750E | ASTORIA | OR |
| 2008-08-11 | 503-468-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | ASTORIA | OR |
| 2008-08-06 | 503-278-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | PORTLAND | OR |
| 2008-08-06 | 503-278-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | PORTLAND | OR |
| 2008-08-06 | 503-278-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | PORTLAND | OR |
| 2008-08-05 | 503-521-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | BEAVERTON | OR |
| 2008-08-05 | 503-858-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | BEAVERTON | OR |
| 2008-08-05 | 503-858-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | BEAVERTON | OR |
| 2008-08-05 | 503-991-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | SALEM | OR |
| 2008-08-05 | 503-991-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | SALEM | OR |
| 2008-08-04 | 503-505-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | PORTLAND | OR |
| 2008-08-04 | 503-505-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | PORTLAND | OR |
| 2008-08-04 | 503-505-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | PORTLAND | OR |
| 2008-07-29 | 503-594-5XXX | 5000–5999 | Assigned | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | 7172 | CLACKAMAS | OR |
| 2008-07-29 | 503-594-6XXX | 6000–6999 | Assigned | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | 7172 | CLACKAMAS | OR |
| 2008-07-28 | 503-406-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - OR | 3234 | CLACKAMAS | OR |
| 2008-07-17 | 503-405-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - OR | 3234 | GRESHAM | OR |
| 2008-07-10 | 503-718-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | BEAVERTON | OR |
| 2008-07-07 | 503-400-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - OR | 3234 | SALEM | OR |
| 2008-07-07 | 503-400-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - OR | 3234 | SALEM | OR |
| 2008-07-07 | 503-746-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - OR | 3234 | BEAVERTON | OR |
| 2008-07-07 | 503-746-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - OR | 3234 | BEAVERTON | OR |
| 2008-07-02 | 503-719-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PORTLAND | OR |
| 2008-07-02 | 503-719-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | PORTLAND | OR |
| 2008-06-27 | 503-719-4XXX | 4000–4999 | Assigned | COMCAST IP PHONE, LLC | 318J | PORTLAND | OR |
| 2008-06-27 | 503-719-5XXX | 5000–5999 | Assigned | COMCAST IP PHONE, LLC | 318J | PORTLAND | OR |
| 2008-06-27 | 503-719-6XXX | 6000–6999 | Assigned | COMCAST IP PHONE, LLC | 318J | PORTLAND | OR |
| 2008-06-27 | 503-719-7XXX | 7000–7999 | Assigned | COMCAST IP PHONE, LLC | 318J | PORTLAND | OR |
| 2008-06-25 | 503-305-6XXX | 6000–6999 | Assigned | COMCAST IP PHONE, LLC | 318J | CLACKAMAS | OR |
| 2008-06-25 | 503-305-8XXX | 8000–8999 | Assigned | COMCAST IP PHONE, LLC | 318J | CLACKAMAS | OR |
| 2008-06-24 | 503-501-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PORTLAND | OR |
| 2008-06-24 | 503-501-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PORTLAND | OR |
| 2008-06-24 | 503-501-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PORTLAND | OR |
| 2008-06-24 | 503-719-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PORTLAND | OR |
| 2008-06-24 | 503-719-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PORTLAND | OR |
| 2008-06-24 | 503-896-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PORTLAND | OR |
| 2008-06-24 | 503-896-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PORTLAND | OR |
| 2008-06-24 | 503-896-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PORTLAND | OR |
| 2008-06-24 | 503-896-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PORTLAND | OR |
| 2008-06-24 | 503-896-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | PORTLAND | OR |
| 2008-06-19 | 503-953-1XXX | 1000–1999 | Assigned | ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | 7172 | PORTLAND | OR |
| 2008-06-19 | 503-953-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | PORTLAND | 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.