NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026
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 417
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2017-06-14 | 417-333-3XXX | 3000–3999 | Assigned | RYSTEC, INC | 142C | PITTSBURG | MO |
| 2017-06-14 | 417-973-9XXX | 9000–9999 | Assigned | RYSTEC, INC | 142C | BRANSON | MO |
| 2007-03-01 | 417-606-5XXX | 5000–5999 | Assigned | RYSTEC, INC | 142C | MT VERNON | MO |
| 2006-09-22 | 417-707-0XXX | 0000–0999 | Assigned | RYSTEC, INC | 142C | NORWOOD | MO |
| 2006-09-13 | 417-668-4XXX | 4000–4999 | Assigned | RYSTEC, INC | 142C | MANES | MO |
| 2006-06-08 | 417-271-7XXX | 7000–7999 | Assigned | RYSTEC, INC | 142C | MANO | MO |
| 2006-06-08 | 417-453-3XXX | 3000–3999 | Assigned | RYSTEC, INC | 142C | NEBO | MO |
| 2006-06-08 | 417-458-5XXX | 5000–5999 | Assigned | RYSTEC, INC | 142C | ROBY | MO |
| 2006-06-08 | 417-554-5XXX | 5000–5999 | Assigned | RYSTEC, INC | 142C | MANSFIELD | MO |
| 2006-06-08 | 417-948-5XXX | 5000–5999 | Assigned | RYSTEC, INC | 142C | VANZANT | MO |
| 2006-05-10 | 417-962-6XXX | 6000–6999 | Assigned | RYSTEC, INC | 142C | CABOOL | MO |
| 2006-03-10 | 417-247-4XXX | 4000–4999 | Assigned | RYSTEC, INC | 142C | MT VIEW | MO |
| 2006-03-10 | 417-250-5XXX | 5000–5999 | Assigned | RYSTEC, INC | 142C | AVA | MO |
| 2006-03-10 | 417-252-5XXX | 5000–5999 | Assigned | RYSTEC, INC | 142C | WILLOW SPG | MO |
| 2004-11-12 | 417-497-0XXX | 0000–0999 | Assigned | RYSTEC, INC | 142C | MILO | MO |
| 2004-11-12 | 417-804-0XXX | 0000–0999 | Assigned | RYSTEC, INC | 142C | WHEATLAND | MO |
| 2004-11-09 | 417-302-0XXX | 0000–0999 | Assigned | RYSTEC, INC | 142C | ROCKAWYBCH | MO |
| 2004-11-09 | 417-304-0XXX | 0000–0999 | Assigned | RYSTEC, INC | 142C | KOSHKONONG | MO |
| 2004-11-09 | 417-333-0XXX | 0000–0999 | Assigned | RYSTEC, INC | 142C | PITTSBURG | MO |
| 2004-11-09 | 417-383-0XXX | 0000–0999 | Assigned | RYSTEC, INC | 142C | BUFFALO | MO |
| 2004-11-09 | 417-420-0XXX | 0000–0999 | Assigned | RYSTEC, INC | 142C | HURLEY | MO |
| 2004-11-09 | 417-446-0XXX | 0000–0999 | Assigned | RYSTEC, INC | 142C | LOUISBURG | MO |
| 2004-11-09 | 417-487-0XXX | 0000–0999 | Assigned | RYSTEC, INC | 142C | SCHELLCITY | MO |
| 2004-11-09 | 417-551-0XXX | 0000–0999 | Assigned | RYSTEC, INC | 142C | OZARK | MO |
| 2004-11-09 | 417-557-0XXX | 0000–0999 | Assigned | RYSTEC, INC | 142C | HERMITAGE | MO |
| 2004-11-09 | 417-566-0XXX | 0000–0999 | Assigned | RYSTEC, INC | 142C | PRESTON | MO |
| 2004-11-09 | 417-670-0XXX | 0000–0999 | Assigned | RYSTEC, INC | 142C | URBANA | MO |
| 2004-11-09 | 417-698-0XXX | 0000–0999 | Assigned | RYSTEC, INC | 142C | ELDORDOSPG | MO |
| 2004-11-09 | 417-792-0XXX | 0000–0999 | Assigned | RYSTEC, INC | 142C | THOMASVL | MO |
| 2004-11-09 | 417-797-0XXX | 0000–0999 | Assigned | RYSTEC, INC | 142C | DORA | MO |
| 2004-11-09 | 417-807-0XXX | 0000–0999 | Assigned | RYSTEC, INC | 142C | CAULFIELD | MO |
| 2004-11-09 | 417-821-0XXX | 0000–0999 | Assigned | RYSTEC, INC | 142C | THAYER | MO |
| 2004-11-09 | 417-969-0XXX | 0000–0999 | Assigned | RYSTEC, INC | 142C | CAPE FAIR | MO |
| 2004-11-09 | 417-984-0XXX | 0000–0999 | Assigned | RYSTEC, INC | 142C | SUMMERSVL | MO |
| 2004-10-28 | 417-248-5XXX | 5000–5999 | Assigned | RYSTEC, INC | 142C | REEDS SPG | MO |
| 2004-10-28 | 417-249-5XXX | 5000–5999 | Assigned | RYSTEC, INC | 142C | KIMBELNGCY | MO |
| 2004-10-28 | 417-259-5XXX | 5000–5999 | Assigned | RYSTEC, INC | 142C | MOUNTANGRV | MO |
| 2004-10-28 | 417-274-5XXX | 5000–5999 | Assigned | RYSTEC, INC | 142C | WESTPLAINS | MO |
| 2004-10-26 | 417-245-5XXX | 5000–5999 | Assigned | RYSTEC, INC | 142C | GALENA | MO |
| 2004-10-26 | 417-677-5XXX | 5000–5999 | Assigned | RYSTEC, INC | 142C | FORSYTH | MO |
| 2004-10-26 | 417-712-5XXX | 5000–5999 | Assigned | RYSTEC, INC | 142C | GAINESVL | MO |
| 2004-10-25 | 417-202-5XXX | 5000–5999 | Assigned | RYSTEC, INC | 142C | BLUE EYE | MO |
| 2004-10-25 | 417-203-5XXX | 5000–5999 | Assigned | RYSTEC, INC | 142C | CRANE | MO |
| 2004-10-25 | 417-270-5XXX | 5000–5999 | Assigned | RYSTEC, INC | 142C | ALTON | MO |
| 2004-10-25 | 417-440-5XXX | 5000–5999 | Assigned | RYSTEC, INC | 142C | AURORA | MO |
| 2004-10-13 | 417-973-0XXX | 0000–0999 | Assigned | RYSTEC, INC | 142C | BRANSON | MO |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.