NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026
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, all time — NPA 484
New assignments by month
Sep 2026
Aug 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2013-09-20 | 484-909-4XXX | 4000–4999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | PARKESBURG | PA |
| 2013-05-23 | 484-999-6XXX | 6000–6999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | W CHESTER | PA |
| 2013-04-25 | 484-874-4XXX | 4000–4999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | EXTON | PA |
| 2010-08-13 | 484-353-7XXX | 7000–7999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | BETHLEHEM | PA |
| 2010-06-16 | 484-857-6XXX | 6000–6999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | KEMPTON | PA |
| 2010-03-30 | 484-760-4XXX | 4000–4999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | WESTTOWN | PA |
| 2010-03-30 | 484-968-4XXX | 4000–4999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | SCHWENKSVL | PA |
| 2010-03-30 | 484-985-3XXX | 3000–3999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | PUGHTOWN | PA |
| 2010-02-24 | 484-392-4XXX | 4000–4999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | PHPHSBZN29 | PA |
| 2010-02-24 | 484-454-4XXX | 4000–4999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | PHPHSBZN21 | PA |
| 2010-02-10 | 484-558-4XXX | 4000–4999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | GLENMOORE | PA |
| 2010-02-10 | 484-665-4XXX | 4000–4999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | HAMBURG | PA |
| 2010-02-10 | 484-796-4XXX | 4000–4999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | HONEYBROOK | PA |
| 2010-02-10 | 484-856-4XXX | 4000–4999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | HELLERTOWN | PA |
| 2009-11-10 | 484-374-6XXX | 6000–6999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | POTTSTOWN | PA |
| 2009-11-10 | 484-793-4XXX | 4000–4999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | FLEETWOOD | PA |
| 2009-11-10 | 484-823-6XXX | 6000–6999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | AVONDALE | PA |
| 2009-08-31 | 484-294-4XXX | 4000–4999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | ALLENTOWN | PA |
| 2009-08-31 | 484-647-3XXX | 3000–3999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | NEWSMITHVL | PA |
| 2009-04-15 | 484-286-4XXX | 4000–4999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | BATH | PA |
| 2009-04-15 | 484-359-6XXX | 6000–6999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | EAGLE | PA |
| 2009-04-15 | 484-540-6XXX | 6000–6999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | PHPHSBZN14 | PA |
| 2009-04-03 | 484-378-4XXX | 4000–4999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | COATESVL | PA |
| 2008-11-10 | 484-525-4XXX | 4000–4999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | READING | PA |
| 2008-09-18 | 484-362-6XXX | 6000–6999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | PHPHSBZN31 | PA |
| 2008-09-16 | 484-448-6XXX | 6000–6999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | PHPHSBZN12 | PA |
| 2008-09-16 | 484-694-4XXX | 4000–4999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | DOWNINGTN | PA |
| 2008-08-08 | 484-875-6XXX | 6000–6999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | EXTON | PA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.