NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026
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 412
New assignments by month
Sep 2026
Aug 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2020-12-21 | 412-730-0XXX | 0000–0999 | Assigned | FIDIUM ENTERPRISE SERVICES, LLC | 8597 | PTTSBGZON1 | PA |
| 2020-12-21 | 412-730-6XXX | 6000–6999 | Assigned | FIDIUM ENTERPRISE SERVICES, LLC | 8597 | PTTSBGZON1 | PA |
| 2020-12-21 | 412-730-7XXX | 7000–7999 | Assigned | FIDIUM ENTERPRISE SERVICES, LLC | 8597 | PTTSBGZON1 | PA |
| 2020-09-29 | 412-947-5XXX | 5000–5999 | Assigned | FIDIUM ENTERPRISE SERVICES, LLC | 8597 | PTTSBGZON6 | PA |
| 2015-07-16 | 412-618-3XXX | 3000–3999 | Assigned | FIDIUM ENTERPRISE SERVICES, LLC | 8597 | PTTSBGZON1 | PA |
| 2014-08-25 | 412-457-2XXX | 2000–2999 | Assigned | FIDIUM ENTERPRISE SERVICES, LLC | 8597 | PTGSBNZN22 | PA |
| 2013-07-23 | 412-529-2XXX | 2000–2999 | Assigned | FIDIUM ENTERPRISE SERVICES, LLC | 8597 | PTTSBGZON1 | PA |
| 2013-07-23 | 412-529-3XXX | 3000–3999 | Assigned | FIDIUM ENTERPRISE SERVICES, LLC | 8597 | PTTSBGZON1 | PA |
| 2013-07-23 | 412-529-4XXX | 4000–4999 | Assigned | FIDIUM ENTERPRISE SERVICES, LLC | 8597 | PTTSBGZON1 | PA |
| 2013-07-23 | 412-529-5XXX | 5000–5999 | Assigned | FIDIUM ENTERPRISE SERVICES, LLC | 8597 | PTTSBGZON1 | PA |
| 2013-07-23 | 412-529-6XXX | 6000–6999 | Assigned | FIDIUM ENTERPRISE SERVICES, LLC | 8597 | PTTSBGZON1 | PA |
| 2013-07-23 | 412-529-7XXX | 7000–7999 | Assigned | FIDIUM ENTERPRISE SERVICES, LLC | 8597 | PTTSBGZON1 | PA |
| 2013-07-23 | 412-529-8XXX | 8000–8999 | Assigned | FIDIUM ENTERPRISE SERVICES, LLC | 8597 | PTTSBGZON1 | PA |
| 2013-02-21 | 412-515-2XXX | 2000–2999 | Assigned | FIDIUM ENTERPRISE SERVICES, LLC | 8597 | PTTSBGZON1 | PA |
| 2013-01-16 | 412-924-3XXX | 3000–3999 | Assigned | FIDIUM ENTERPRISE SERVICES, LLC | 8597 | PTTSBGZON8 | PA |
| 2011-03-25 | 412-315-3XXX | 3000–3999 | Assigned | FIDIUM ENTERPRISE SERVICES, LLC | 8597 | PTTSBGZON1 | PA |
| 2011-03-23 | 412-437-3XXX | 3000–3999 | Assigned | FIDIUM ENTERPRISE SERVICES, LLC | 8597 | PTTSBGZON6 | PA |
| 2010-07-22 | 412-489-8XXX | 8000–8999 | Assigned | FIDIUM ENTERPRISE SERVICES, LLC | 8597 | PTGSBNZN14 | PA |
| 2008-06-20 | 412-342-6XXX | 6000–6999 | Assigned | FIDIUM ENTERPRISE SERVICES, LLC | 8597 | PTTSBGZON4 | PA |
| 2007-02-09 | 412-942-9XXX | 9000–9999 | Assigned | FIDIUM ENTERPRISE SERVICES, LLC | 8597 | PTTSBGZON6 | PA |
| 2007-01-18 | 412-224-6XXX | 6000–6999 | Assigned | FIDIUM ENTERPRISE SERVICES, LLC | 8597 | PTTSBGZON1 | PA |
| 2007-01-18 | 412-894-2XXX | 2000–2999 | Assigned | FIDIUM ENTERPRISE SERVICES, LLC | 8597 | PTTSBGZON1 | PA |
| 2005-09-30 | 412-224-4XXX | 4000–4999 | Assigned | FIDIUM ENTERPRISE SERVICES, LLC | 8597 | PTTSBGZON1 | PA |
| 2005-03-11 | 412-206-4XXX | 4000–4999 | Assigned | FIDIUM ENTERPRISE SERVICES, LLC | 8597 | PTGSBNZN13 | PA |
| 2003-05-29 | 412-436-2XXX | 2000–2999 | Assigned | FIDIUM ENTERPRISE SERVICES, LLC | 8597 | PTTSBGZON4 | PA |
| 2003-02-14 | 412-942-7XXX | 7000–7999 | Assigned | FIDIUM ENTERPRISE SERVICES, LLC | 8597 | PTTSBGZON6 | PA |
| 2003-02-14 | 412-942-8XXX | 8000–8999 | Assigned | FIDIUM ENTERPRISE SERVICES, LLC | 8597 | PTTSBGZON6 | PA |
| 2002-10-29 | 412-368-4XXX | 4000–4999 | Assigned | FIDIUM ENTERPRISE SERVICES, LLC | 8597 | PTTSBGZON5 | PA |
| 2002-10-28 | 412-942-2XXX | 2000–2999 | Assigned | FIDIUM ENTERPRISE SERVICES, LLC | 8597 | PTTSBGZON6 | PA |
| 2002-10-28 | 412-942-3XXX | 3000–3999 | Assigned | FIDIUM ENTERPRISE SERVICES, LLC | 8597 | PTTSBGZON6 | PA |
| 2002-10-28 | 412-942-4XXX | 4000–4999 | Assigned | FIDIUM ENTERPRISE SERVICES, LLC | 8597 | PTTSBGZON6 | PA |
| 2002-10-28 | 412-942-5XXX | 5000–5999 | Assigned | FIDIUM ENTERPRISE SERVICES, LLC | 8597 | PTTSBGZON6 | PA |
| 2002-10-28 | 412-942-6XXX | 6000–6999 | Assigned | FIDIUM ENTERPRISE SERVICES, LLC | 8597 | PTTSBGZON6 | PA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.