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
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2018-06-20 | 412-587-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | PTTSBGZON7 | PA |
| 2015-05-19 | 412-308-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | PTGSBNZN12 | PA |
| 2015-05-19 | 412-426-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | PTGSBNZN20 | PA |
| 2015-05-19 | 412-457-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | PTGSBNZN22 | PA |
| 2015-05-19 | 412-530-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | PTTSBGZON5 | PA |
| 2015-05-19 | 412-540-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | PTTSBGZON4 | PA |
| 2015-05-19 | 412-564-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | PTGSBNZN13 | PA |
| 2015-05-19 | 412-665-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | PTTSBGZON8 | PA |
| 2015-05-19 | 412-704-6XXX | 6000–6999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | PTGSBNZN21 | PA |
| 2015-05-19 | 412-729-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | ELIZABETH | PA |
| 2015-05-19 | 412-800-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | PTGSBNZN10 | PA |
| 2015-05-19 | 412-850-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | PTGSBNZN19 | PA |
| 2015-05-19 | 412-943-6XXX | 6000–6999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | PTGSBNZN11 | PA |
| 2015-05-18 | 412-312-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | PTTSBGZON2 | PA |
| 2015-05-18 | 412-318-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | PTGSBNZN17 | PA |
| 2015-05-18 | 412-356-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | PTGSBNZN16 | PA |
| 2015-05-18 | 412-408-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | PTTSBGZON3 | PA |
| 2015-05-18 | 412-458-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | PTTSBGZON7 | PA |
| 2015-05-18 | 412-533-6XXX | 6000–6999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | CLAIRTON | PA |
| 2015-05-18 | 412-668-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | PTTSBGZON6 | PA |
| 2015-05-18 | 412-684-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | PTGSBNZN18 | PA |
| 2015-05-18 | 412-690-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | PTTSBGZON1 | PA |
| 2015-05-15 | 412-413-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | PTGSBNZN14 | PA |
| 2015-05-15 | 412-631-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | PTGSBNZN15 | 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.