NumberResearchThousands-blocks in 208-504
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 208-504 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 208 blocks
Most active assignees, all time — NPA 208
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
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Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2016-02-18 | 208-504-0XXX | 0000–0999 | Assigned | ONVOY, LLC - ID | 689F | CALDWELL | ID |
| 2016-02-18 | 208-504-1XXX | 1000–1999 | Assigned | ONVOY, LLC - ID | 689F | CALDWELL | ID |
| 2018-01-31 | 208-504-2XXX | 2000–2999 | Assigned | AIRUS, INC. - ID | 579H | CALDWELL | ID |
| 2018-04-13 | 208-504-3XXX | 3000–3999 | Assigned | TELNYX LLC | 073H | CALDWELL | ID |
| 2016-05-13 | 208-504-4XXX | 4000–4999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - ID | 808G | CALDWELL | ID |
| 2019-09-12 | 208-504-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CALDWELL | ID |
| 2018-03-23 | 208-504-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CALDWELL | ID |
| 2017-07-13 | 208-504-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CALDWELL | ID |
| 2016-09-01 | 208-504-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CALDWELL | ID |
| 2016-04-19 | 208-504-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CALDWELL | ID |
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.