NumberResearchRecent thousands-block assignments
0 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, all time — NPA 484
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 |
|---|---|---|---|---|---|---|---|
| 2020-04-28 | 484-524-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | POTTSTOWN | PA |
| 2020-04-28 | 484-524-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | POTTSTOWN | PA |
| 2020-04-24 | 484-449-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | PHPHSBZN12 | PA |
| 2020-04-24 | 484-449-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | PHPHSBZN12 | PA |
| 2020-04-24 | 484-471-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | PHPHSBZN13 | PA |
| 2020-04-24 | 484-471-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | PHPHSBZN13 | PA |
| 2020-04-24 | 484-492-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | PHPHSBZN14 | PA |
| 2020-04-24 | 484-745-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | PHPHSBZN10 | PA |
| 2020-04-24 | 484-745-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | PHPHSBZN10 | PA |
| 2020-04-23 | 484-896-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | BETHLEHEM | PA |
| 2020-04-23 | 484-896-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | BETHLEHEM | PA |
| 2017-11-27 | 484-247-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | MORTONVL | PA |
| 2017-11-27 | 484-316-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | RIEGELSVL | PA |
| 2017-11-27 | 484-406-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | LANDENBERG | PA |
| 2017-11-27 | 484-500-3XXX | 3000–3999 | Assigned | IP HORIZON LLC | 515J | PUGHTOWN | PA |
| 2017-11-27 | 484-564-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | WESTTOWN | PA |
| 2017-11-27 | 484-606-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | LENAPE | PA |
| 2017-11-27 | 484-623-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | SLATINGTON | PA |
| 2017-11-27 | 484-647-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | NEWSMITHVL | PA |
| 2017-11-27 | 484-748-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | WEST GROVE | PA |
| 2017-11-27 | 484-770-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | MENDENHALL | PA |
| 2017-11-27 | 484-814-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | SPRINGTOWN | PA |
| 2017-11-27 | 484-900-3XXX | 3000–3999 | Assigned | IP HORIZON LLC | 515J | UNIONVILLE | PA |
| 2017-11-20 | 484-930-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | WOMELSDORF | PA |
| 2017-11-16 | 484-212-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | EAGLE | PA |
| 2017-11-16 | 484-218-6XXX | 6000–6999 | Assigned | IP HORIZON LLC | 515J | BERNVILLE | PA |
| 2017-11-16 | 484-228-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | GLENMOORE | PA |
| 2017-11-16 | 484-246-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | CATASAUQUA | PA |
| 2017-11-16 | 484-507-5XXX | 5000–5999 | Assigned | IP HORIZON LLC | 515J | FLEETWOOD | PA |
| 2017-11-16 | 484-600-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | KEMPTON | PA |
| 2017-11-16 | 484-648-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | KUTZTOWN | PA |
| 2017-11-16 | 484-662-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | HAMBURG | PA |
| 2017-11-16 | 484-852-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | HELLERTOWN | PA |
| 2017-11-16 | 484-915-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | AVONDALE | PA |
| 2017-06-19 | 484-207-3XXX | 3000–3999 | Assigned | IP HORIZON LLC | 515J | CHESTERSPG | PA |
| 2017-06-19 | 484-471-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | PHPHSBZN13 | PA |
| 2017-06-19 | 484-510-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | BETHLEHEM | PA |
| 2017-06-19 | 484-627-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | EASTON | PA |
| 2017-06-19 | 484-756-2XXX | 2000–2999 | Assigned | IP HORIZON LLC | 515J | OXFORD | PA |
| 2017-06-19 | 484-791-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | ROYERSFORD | PA |
| 2017-06-19 | 484-940-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | POTTSTOWN | PA |
| 2016-05-03 | 484-243-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | PHPHSBZN31 | PA |
| 2016-05-03 | 484-370-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | PHPHSBZN30 | PA |
| 2016-05-03 | 484-382-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | PHPHSBZN25 | PA |
| 2016-05-03 | 484-418-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | PHPHSBZN24 | PA |
| 2016-05-03 | 484-420-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | PHPHSBZN22 | PA |
| 2016-05-03 | 484-442-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | PHPHSBZN12 | PA |
| 2016-05-03 | 484-447-5XXX | 5000–5999 | Assigned | IP HORIZON LLC | 515J | POTTSTOWN | PA |
| 2016-05-03 | 484-453-0XXX | 0000–0999 | Assigned | IP HORIZON LLC | 515J | PHPHSBZN21 | PA |
| 2016-05-03 | 484-462-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | PHPHSBZN17 | PA |
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.