NumberResearchRecent thousands-block assignments
24 blocks assigned in August 2026 · 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, August 2026
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| Assigned | Block | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 2026-08-28 | 260-288-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN | 7440 | BUTLER | IN |
| 2026-08-28 | 260-390-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN | 7440 | OSSIAN | IN |
| 2026-08-28 | 517-418-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7157 | HOMER | MI |
| 2026-08-28 | 574-900-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN | 7440 | WAKARUSA | IN |
| 2026-08-28 | 734-684-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | IDA | MI |
| 2026-08-27 | 223-296-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MTHOLLYSPG | PA |
| 2026-08-27 | 272-278-1XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MANSFIELD | PA |
| 2026-08-27 | 272-294-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | AVIS | PA |
| 2026-08-27 | 272-992-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | AUBURN | PA |
| 2026-08-27 | 413-483-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ADAMS | MA |
| 2026-08-27 | 570-722-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WHITEHAVEN | PA |
| 2026-08-27 | 717-401-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | FAYETTEVL | PA |
| 2026-08-27 | 878-219-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | FARMINGTON | PA |
| 2026-08-27 | 878-275-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | AVONMORE | PA |
| 2026-08-26 | 223-723-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LOGANVILLE | PA |
| 2026-08-26 | 484-247-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MORTONVL | PA |
| 2026-08-26 | 582-227-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | GIRARD | PA |
| 2026-08-26 | 814-364-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CENTREHALL | PA |
| 2026-08-26 | 814-560-9XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TIONESTA | PA |
| 2026-08-26 | 814-712-1XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | REW | PA |
| 2026-08-24 | 717-387-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WAYNESBORO | PA |
| 2026-08-24 | 724-319-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CARMICHALS | PA |
| 2026-08-18 | 814-957-1XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SAXTON | PA |
| 2026-08-05 | 267-871-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DUBLIN | PA |
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.