NumberResearchRecent thousands-block assignments
3 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 610
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
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Jan 2026
Dec 2025
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2002-08-07 | 610-707-4XXX | 4000–4999 | Assigned | NETCARRIER TELECOM, INC. - PA | 5494 | PHPHSBZN22 | PA |
| 2002-08-07 | 610-922-6XXX | 6000–6999 | Assigned | NETCARRIER TELECOM, INC. - PA | 5494 | PHPHSBZN25 | PA |
| 2002-06-20 | 610-245-5XXX | 5000–5999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - PA | 7315 | PHPHSBZN11 | PA |
| 2002-05-31 | 610-568-1XXX | 1000–1999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | READING | PA |
| 2002-05-29 | 610-228-8XXX | 8000–8999 | Assigned | CORE COMMUNICATIONS, INC. - PA | 3806 | PHPHSBZN24 | PA |
| 2002-05-29 | 610-274-4XXX | 4000–4999 | Assigned | CORE COMMUNICATIONS, INC. - PA | 3806 | LANDENBERG | PA |
| 2002-05-29 | 610-441-0XXX | 0000–0999 | Assigned | CORE COMMUNICATIONS, INC. - PA | 3806 | W CHESTER | PA |
| 2002-04-25 | 610-857-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PARKESBURG | PA |
| 2002-04-19 | 610-572-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PHPHSBZN21 | PA |
| 2002-04-19 | 610-590-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | CHESTERSPG | PA |
| 2002-04-19 | 610-616-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PHPHSBZN14 | PA |
| 2002-04-19 | 610-624-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | PHPHSBZN17 | PA |
| 2002-04-19 | 610-643-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | COATESVL | PA |
| 2002-04-11 | 610-362-8XXX | 8000–8999 | Assigned | AT&T - LOCAL | 7421 | PHPHSBZN14 | PA |
| 2002-04-08 | 610-295-6XXX | 6000–6999 | Assigned | NETCARRIER TELECOM, INC. - PA | 5494 | ALLENTOWN | PA |
| 2002-04-08 | 610-382-5XXX | 5000–5999 | Assigned | NETCARRIER TELECOM, INC. - PA | 5494 | PHPHSBZN30 | PA |
| 2002-04-08 | 610-538-6XXX | 6000–6999 | Assigned | NETCARRIER TELECOM, INC. - PA | 5494 | PHPHSBZN23 | PA |
| 2002-04-08 | 610-561-6XXX | 6000–6999 | Assigned | NETCARRIER TELECOM, INC. - PA | 5494 | EXTON | PA |
| 2002-04-08 | 610-629-6XXX | 6000–6999 | Assigned | NETCARRIER TELECOM, INC. - PA | 5494 | PHPHSBZN31 | PA |
| 2002-04-08 | 610-947-6XXX | 6000–6999 | Assigned | NETCARRIER TELECOM, INC. - PA | 5494 | PHPHSBZN26 | PA |
| 2002-04-08 | 610-981-6XXX | 6000–6999 | Assigned | NETCARRIER TELECOM, INC. - PA | 5494 | PHPHSBZN28 | PA |
| 2002-03-07 | 610-568-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA | 7434 | READING | PA |
| 2002-02-22 | 610-343-1XXX | 1000–1999 | Assigned | PAETEC ITEL, LLC | 829J | DOWNINGTN | PA |
| 2001-12-13 | 610-479-6XXX | 6000–6999 | Assigned | AT&T - LOCAL | 7421 | PHPHSBZN10 | PA |
| 2001-11-09 | 610-479-3XXX | 3000–3999 | Assigned | AT&T - LOCAL | 7421 | PHPHSBZN10 | PA |
| 2001-11-09 | 610-479-4XXX | 4000–4999 | Assigned | AT&T - LOCAL | 7421 | PHPHSBZN10 | PA |
| 2001-11-09 | 610-479-5XXX | 5000–5999 | Assigned | AT&T - LOCAL | 7421 | PHPHSBZN10 | PA |
| 2001-10-08 | 610-401-0XXX | 0000–0999 | Assigned | SERVICE ELECTRIC TELEPHONE COMPANY, LLC | 8320 | READING | 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.