NumberResearchThousands-blocks in 913-828
This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/19/2026
The ten 1,000-number thousand-blocks inside prefix 913-828 and who was initially assigned each. Under pooling these blocks often belong to different carriers — the single prefix-level “assignee” is usually just the pool / code holder, not who holds the numbers. ← all 913 blocks
Most active assignees, all time — NPA 913
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2008-01-23 | 913-828-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - KS | 2240 | LEAVENWTH | KS |
| 2021-03-16 | 913-828-1XXX | 1000–1999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | LEAVENWTH | KS |
| 2014-05-15 | 913-828-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - KS | 2240 | LEAVENWTH | KS |
| 2013-05-13 | 913-828-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - KS | 2240 | LEAVENWTH | KS |
| — | 913-828-4XXX | 4000–4999 | Reserved | LEVEL 3 COMMUNICATIONS, LLC - KS | 2240 | LEAVENWTH | KS |
| 2005-03-07 | 913-828-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - KS | 2240 | LEAVENWTH | KS |
| 2017-03-09 | 913-828-6XXX | 6000–6999 | Assigned | TELNYX LLC | 073H | LEAVENWTH | KS |
| — | 913-828-7XXX | 7000–7999 | Available | LEAVENWTH | KS | ||
| 2023-07-14 | 913-828-8XXX | 8000–8999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - KS | 8995 | LEAVENWTH | KS |
| 2022-08-09 | 913-828-9XXX | 9000–9999 | Assigned | BOOST SUBSCRIBERCO L.L.C. | 490J | LEAVENWTH | KS |
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.