NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/26/2026
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 937
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2012-12-18 | 937-364-5XXX | 5000–5999 | Assigned | HORIZON SERVICES, INC. - OH | 601G | LYNCHBURG | OH |
| 2012-12-18 | 937-780-0XXX | 0000–0999 | Assigned | HORIZON SERVICES, INC. - OH | 601G | LEESBURG | OH |
| 2012-12-13 | 937-803-1XXX | 1000–1999 | Assigned | HORIZON SERVICES, INC. - OH | 601G | GREENFIELD | OH |
| 2012-11-12 | 937-377-9XXX | 9000–9999 | Assigned | HORIZON SERVICES, INC. - OH | 601G | RUSSELLVL | OH |
| 2012-11-08 | 937-712-1XXX | 1000–1999 | Assigned | HORIZON SERVICES, INC. - OH | 601G | MOUNT ORAB | OH |
| 2012-11-01 | 937-373-5XXX | 5000–5999 | Assigned | HORIZON SERVICES, INC. - OH | 601G | DECATUR | OH |
| 2012-11-01 | 937-375-8XXX | 8000–8999 | Assigned | HORIZON SERVICES, INC. - OH | 601G | HIGGINSPT | OH |
| 2012-11-01 | 937-379-3XXX | 3000–3999 | Assigned | HORIZON SERVICES, INC. - OH | 601G | HAMERSVL | OH |
| 2012-11-01 | 937-752-1XXX | 1000–1999 | Assigned | HORIZON SERVICES, INC. - OH | 601G | SEAMAN | OH |
| 2012-11-01 | 937-798-2XXX | 2000–2999 | Assigned | HORIZON SERVICES, INC. - OH | 601G | PEEBLES | OH |
| 2012-11-01 | 937-892-1XXX | 1000–1999 | Assigned | HORIZON SERVICES, INC. - OH | 601G | WEST UNION | OH |
| 2012-10-19 | 937-801-1XXX | 1000–1999 | Assigned | HORIZON SERVICES, INC. - OH | 601G | GEORGETOWN | OH |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.