NumberResearchRecent thousands-block assignments
31 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 530
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 |
|---|---|---|---|---|---|---|---|
| 2005-06-13 | 530-269-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | AUBN NORTH | CA |
| 2005-06-13 | 530-287-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | ALLEGHANY | CA |
| 2005-06-13 | 530-292-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | NOSAN JUAN | CA |
| 2005-06-13 | 530-296-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | PLVL KYBRZ | CA |
| 2005-06-13 | 530-314-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SOUTHTAHOE | CA |
| 2005-06-13 | 530-362-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | NEVADACITY | CA |
| 2005-06-13 | 530-387-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SHINGLESPG | CA |
| 2005-06-13 | 530-389-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | ALTA | CA |
| 2005-06-13 | 530-392-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | AUBN MAIN | CA |
| 2005-06-13 | 530-427-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SODA SPG | CA |
| 2005-06-13 | 530-448-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | NTAH THCY | CA |
| 2005-06-13 | 530-495-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | COLEVILLE | CA |
| 2005-06-13 | 530-503-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | PLVL SOUTH | CA |
| 2005-06-13 | 530-505-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | WINTERS | CA |
| 2005-06-13 | 530-553-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | NTAH BCWY | CA |
| 2005-06-13 | 530-562-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | TRUCKEE | CA |
| 2005-06-13 | 530-633-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | WHEATLAND | CA |
| 2005-06-13 | 530-639-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SMARTSVL | CA |
| 2005-06-13 | 530-656-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | NICOLAUS | CA |
| 2005-06-13 | 530-692-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | NORTH YUBA | CA |
| 2005-06-13 | 530-694-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | ALPINE | CA |
| 2005-06-13 | 530-696-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | MERIDIAN | CA |
| 2005-06-13 | 530-738-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | ROBBINS | CA |
| 2005-06-13 | 530-903-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | PLVL WEST | CA |
| 2005-06-09 | 530-344-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | PLVL WEST | CA |
| 2005-06-09 | 530-344-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | PLVL WEST | CA |
| 2005-06-08 | 530-250-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SUSANVILLE | CA |
| 2005-06-08 | 530-303-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - CA | 981E | PLVL WEST | CA |
| 2005-06-06 | 530-368-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | AUBN MAIN | CA |
| 2005-06-06 | 530-368-4XXX | 4000–4999 | Assigned | METROPCS, INC. | 5562 | AUBN MAIN | CA |
| 2005-06-03 | 530-924-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | CHICO | CA |
| 2005-06-01 | 530-923-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | MARYSVILLE | CA |
| 2005-05-26 | 530-249-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SUSANVILLE | CA |
| 2005-05-26 | 530-575-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | GRVY MAIN | CA |
| 2005-05-26 | 530-575-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | GRVY MAIN | CA |
| 2005-05-13 | 530-410-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | REDDING | CA |
| 2005-05-13 | 530-410-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | REDDING | CA |
| 2005-05-13 | 530-410-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | REDDING | CA |
| 2005-05-12 | 530-578-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SOUTHTAHOE | CA |
| 2005-05-12 | 530-578-7XXX | 7000–7999 | Assigned | ONVOY, LLC - CA | 649C | SOUTHTAHOE | CA |
| 2005-05-12 | 530-578-8XXX | 8000–8999 | Assigned | ONVOY, LLC - CA | 649C | SOUTHTAHOE | CA |
| 2005-05-12 | 530-725-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SOUTHTAHOE | CA |
| 2005-05-12 | 530-725-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SOUTHTAHOE | CA |
| 2005-05-12 | 530-725-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SOUTHTAHOE | CA |
| 2005-05-12 | 530-725-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SOUTHTAHOE | CA |
| 2005-05-11 | 530-903-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | PLVL WEST | CA |
| 2005-05-10 | 530-207-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | WOODLAND | CA |
| 2005-04-29 | 530-739-0XXX | 0000–0999 | Assigned | UNITED STATES CELLULAR - CA | 6261 | WEAVERVL | CA |
| 2005-04-28 | 530-921-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | REDDING | CA |
| 2005-04-14 | 530-927-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | QUINCY | CA |
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.