NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026
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 973
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
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Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2019-06-13 | 973-944-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MORRISTOWN | NJ |
| 2017-12-29 | 973-629-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LIVINGSTON | NJ |
| 2017-08-08 | 973-860-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BLOOMFIELD | NJ |
| 2017-06-20 | 973-938-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PATERSON | NJ |
| 2016-01-07 | 973-500-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ANDOVER | NJ |
| 2015-11-06 | 973-436-0XXX | 0000–0999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LIVINGSTON | NJ |
| 2015-10-28 | 973-829-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MORRISTOWN | NJ |
| 2015-08-25 | 973-317-0XXX | 0000–0999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MT VIEW | NJ |
| 2015-08-21 | 973-302-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BELLEVILLE | NJ |
| 2015-02-13 | 973-877-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NEWARK | NJ |
| 2013-10-04 | 973-436-1XXX | 1000–1999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LIVINGSTON | NJ |
| 2013-02-19 | 973-317-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MT VIEW | NJ |
| 2011-11-09 | 973-339-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LITTLE FLS | NJ |
| 2011-02-24 | 973-404-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BOONTON | NJ |
| 2010-09-16 | 973-567-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CALDWELL | NJ |
| 2010-08-04 | 973-307-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MADISON | NJ |
| 2009-05-22 | 973-846-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | W MILFORD | NJ |
| 2009-04-16 | 973-250-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BRANCHVL | NJ |
| 2009-04-16 | 973-500-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ANDOVER | NJ |
| 2009-04-16 | 973-512-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LAKEMOHAWK | NJ |
| 2009-04-16 | 973-721-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SUSSEX | NJ |
| 2009-04-16 | 973-864-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | FRANKLINBO | NJ |
| 2009-04-16 | 973-869-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ERSKINELKS | NJ |
| 2009-02-20 | 973-804-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NETCONG | NJ |
| 2009-02-20 | 973-841-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NEWFOUNDLD | NJ |
| 2009-02-20 | 973-842-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BLOOMFIELD | NJ |
| 2009-02-20 | 973-862-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NEWTON | NJ |
| 2009-02-20 | 973-891-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DOVER | NJ |
| 2009-02-20 | 973-908-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CHATHAM | NJ |
| 2009-01-08 | 973-906-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ | 7134 | MORRISTOWN | NJ |
| 2008-08-25 | 973-387-1XXX | 1000–1999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MORRISTOWN | NJ |
| 2008-03-14 | 973-944-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MORRISTOWN | NJ |
| 2008-03-12 | 973-870-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PATERSON | NJ |
| 2007-10-04 | 973-735-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ | 7134 | NEWARK | NJ |
| 2007-06-26 | 973-970-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SUCCASUNNA | NJ |
| 2007-05-31 | 973-520-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MADISON | NJ |
| 2007-05-29 | 973-915-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BUTLER | NJ |
| 2007-05-07 | 973-200-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LITTLE FLS | NJ |
| 2007-05-02 | 973-850-0XXX | 0000–0999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BUTLER | NJ |
| 2007-04-25 | 973-771-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BLOOMFIELD | NJ |
| 2007-03-22 | 973-457-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CHATHAM | NJ |
| 2007-03-06 | 973-352-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BOONTON | NJ |
| 2007-02-08 | 973-695-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MORRISTOWN | NJ |
| 2006-12-07 | 973-753-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MORRISTOWN | NJ |
| 2006-11-28 | 973-531-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MENDHAM | NJ |
| 2006-10-09 | 973-934-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | POMPTONLKS | NJ |
| 2006-08-11 | 973-939-1XXX | 1000–1999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BOONTON | NJ |
| 2006-08-11 | 973-939-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BOONTON | NJ |
| 2006-07-13 | 973-767-1XXX | 1000–1999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PASSAIC | NJ |
| 2006-06-29 | 973-900-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NEWARK | NJ |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.