NumberResearchRecent thousands-block assignments
47 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/18/2026
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
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Block | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 617-714-0XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CAMBRIDGE | MA | |
| 617-714-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CAMBRIDGE | MA | |
| 617-769-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | QUINCY | MA | |
| 617-831-1XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NEWTON | MA | |
| 617-831-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NEWTON | MA | |
| 617-892-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BOSTON | MA | |
| 617-892-7XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BOSTON | MA | |
| 617-892-8XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BOSTON | MA | |
| 617-892-9XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BOSTON | MA | |
| 617-960-0XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BOSTON | MA | |
| 617-992-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BROOKLINE | MA | |
| 617-992-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BROOKLINE | MA | |
| 617-992-9XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BROOKLINE | MA | |
| 678-280-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ATLANTA NE | GA | |
| 703-310-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WSNGTNZN08 | VA | |
| 781-257-9XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LINCOLN | MA | |
| 781-301-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LEXINGTON | MA | |
| 781-313-8XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BURLINGTON | MA | |
| 781-347-9XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ROCKLAND | MA | |
| 781-480-1XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MALDEN | MA | |
| 781-480-9XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MALDEN | MA | |
| 781-496-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WOBURN | MA | |
| 781-658-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MEDFORD | MA | |
| 781-658-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MEDFORD | MA | |
| 781-658-9XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MEDFORD | MA | |
| 781-697-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WALTHAM | MA | |
| 781-716-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WAKEFIELD | MA | |
| 781-832-9XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | STONEHAM | MA | |
| 781-906-0XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WALTHAM | MA | |
| 781-922-9XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | REVERE | MA | |
| 781-970-1XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WOBURN | MA | |
| 781-970-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WOBURN | MA | |
| 781-970-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WOBURN | MA | |
| 781-970-8XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WOBURN | MA | |
| 973-741-7XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NEWARK | NJ | |
| 978-206-0XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ACTON | MA | |
| 978-206-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ACTON | MA | |
| 978-206-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ACTON | MA | |
| 978-206-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ACTON | MA | |
| 978-206-7XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ACTON | MA | |
| 978-206-9XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ACTON | MA | |
| 978-224-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SALEM | MA | |
| 978-224-9XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SALEM | MA | |
| 978-298-1XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MAYNARD | MA | |
| 978-298-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MAYNARD | MA | |
| 978-298-9XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MAYNARD | MA | |
| 978-338-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BEVERLY | MA | |
| 978-357-9XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NO READING | MA | |
| 978-377-9XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | HAVERHILL | MA | |
| 978-414-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SALEM | MA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/18/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.