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 610
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
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Apr 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2018-05-21 | 610-592-2XXX | 2000–2999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | PHPHSBZN30 | PA |
| 2010-03-30 | 610-345-4XXX | 4000–4999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | WEST GROVE | PA |
| 2010-03-30 | 610-346-4XXX | 4000–4999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | SPRINGTOWN | PA |
| 2010-03-30 | 610-347-7XXX | 7000–7999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | UNIONVILLE | PA |
| 2010-03-30 | 610-749-4XXX | 4000–4999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | RIEGELSVL | PA |
| 2010-03-30 | 610-978-4XXX | 4000–4999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | SLATINGTON | PA |
| 2010-03-30 | 610-982-4XXX | 4000–4999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | UPBLCKEDDY | PA |
| 2010-02-24 | 610-502-6XXX | 6000–6999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | NORTHAMPTN | PA |
| 2010-02-24 | 610-726-7XXX | 7000–7999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | PHPHSBZN24 | PA |
| 2010-02-24 | 610-922-4XXX | 4000–4999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | PHPHSBZN25 | PA |
| 2010-02-24 | 610-998-4XXX | 4000–4999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | OXFORD | PA |
| 2010-02-22 | 610-243-4XXX | 4000–4999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | LENAPE | PA |
| 2010-02-22 | 610-274-6XXX | 6000–6999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | LANDENBERG | PA |
| 2010-02-22 | 610-298-6XXX | 6000–6999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | NEWTRIPOLI | PA |
| 2010-02-22 | 610-486-4XXX | 4000–4999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | MORTONVL | PA |
| 2010-02-22 | 610-614-4XXX | 4000–4999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | NAZARETH | PA |
| 2010-02-22 | 610-708-4XXX | 4000–4999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | MENDENHALL | PA |
| 2010-02-10 | 610-255-6XXX | 6000–6999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | KEMBLESVL | PA |
| 2010-02-10 | 610-426-4XXX | 4000–4999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | KUTZTOWN | PA |
| 2009-11-10 | 610-333-4XXX | 4000–4999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | EASTON | PA |
| 2009-11-10 | 610-904-6XXX | 6000–6999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | EMMAUS | PA |
| 2009-09-03 | 610-686-4XXX | 4000–4999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | CATASAUQUA | PA |
| 2009-04-15 | 610-827-6XXX | 6000–6999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | CHESTERSPG | PA |
| 2009-03-31 | 610-226-4XXX | 4000–4999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | COLLEGEVL | PA |
| 2009-03-31 | 610-528-4XXX | 4000–4999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | CENTER PT | PA |
| 2009-03-31 | 610-612-4XXX | 4000–4999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | KENNETT SQ | PA |
| 2009-01-27 | 610-474-6XXX | 6000–6999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | ROYERSFORD | PA |
| 2008-09-18 | 610-848-4XXX | 4000–4999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | PHPHSBZN22 | PA |
| 2008-09-16 | 610-482-3XXX | 3000–3999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | PHOENIXVL | PA |
| 2008-09-16 | 610-579-6XXX | 6000–6999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | PHPHSBZN10 | PA |
| 2008-09-16 | 610-605-4XXX | 4000–4999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | PHPHSBZN13 | PA |
| 2008-09-16 | 610-632-4XXX | 4000–4999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | PHPHSBZN23 | PA |
| 2008-09-16 | 610-713-3XXX | 3000–3999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | PHPHSBZN17 | PA |
| 2008-09-16 | 610-990-4XXX | 4000–4999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | PHPHSBZN11 | PA |
| 2008-06-06 | 610-233-3XXX | 3000–3999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | PHPHSBZN30 | PA |
| 2007-10-24 | 610-235-4XXX | 4000–4999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | W CHESTER | PA |
| 2007-10-24 | 610-710-4XXX | 4000–4999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | PHPHSBZN26 | PA |
| 2007-10-24 | 610-981-4XXX | 4000–4999 | Assigned | BLOCK LINE SYSTEMS, LLC - PA | 784E | PHPHSBZN28 | 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.