NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/25/2026
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 770
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
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Dec 2025
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2015-04-06 | 770-705-0XXX | 0000–0999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - GA | 7435 | ATLANTA NE | GA |
| 2015-04-06 | 770-705-1XXX | 1000–1999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - GA | 7435 | ATLANTA NE | GA |
| 2015-04-06 | 770-705-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - GA | 7435 | ATLANTA NE | GA |
| 2015-04-06 | 770-705-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - GA | 7435 | ATLANTA NE | GA |
| 2015-04-06 | 770-705-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - GA | 7435 | ATLANTA NE | GA |
| 2015-04-06 | 770-705-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - GA | 7435 | ATLANTA NE | GA |
| 2015-04-06 | 770-705-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - GA | 7435 | ATLANTA NE | GA |
| 2015-04-06 | 770-705-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - GA | 7435 | ATLANTA NE | GA |
| 2015-04-06 | 770-705-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - GA | 7435 | ATLANTA NE | GA |
| 2015-04-06 | 770-705-9XXX | 9000–9999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - GA | 7435 | ATLANTA NE | GA |
| 2014-04-08 | 770-224-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CANTON | GA |
| 2014-02-19 | 770-463-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - GA | 7435 | ATLANTA SO | GA |
| 2012-02-21 | 770-743-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - GA | 7435 | ATLANTA NE | GA |
| 2012-02-21 | 770-743-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - GA | 7435 | ATLANTA NE | GA |
| 2011-12-05 | 770-308-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - GA | 7435 | ATLANTA NW | GA |
| 2011-12-05 | 770-308-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - GA | 7435 | ATLANTA NW | GA |
| 2011-09-02 | 770-250-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - GA | 7435 | ATLANTA NW | GA |
| 2011-05-24 | 770-250-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - GA | 7435 | ATLANTA NW | GA |
| 2011-04-19 | 770-285-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - GA | 7435 | CONYERS | GA |
| 2011-03-16 | 770-573-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | VILLA RICA | GA |
| 2009-08-13 | 770-229-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - GA | 7435 | GRIFFIN | GA |
| 2006-09-20 | 770-276-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CARTERSVL | GA |
| 2005-06-22 | 770-783-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | VILLA RICA | GA |
| 2005-06-22 | 770-783-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | VILLA RICA | GA |
| 2005-06-22 | 770-783-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | VILLA RICA | GA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/25/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.