NumberResearchThousands-blocks in 708-933
This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/20/2026
The ten 1,000-number thousand-blocks inside prefix 708-933 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 708 blocks
Most active assignees, all time — NPA 708
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 708-933-0XXX | 0000–0999 | Reserved | COMCAST IP PHONE, LLC | 318J | CALUMET CY | IL |
| — | 708-933-1XXX | 1000–1999 | Reserved | TELEPORT COMMUNICATIONS AMERICA, LLC - IL | 7136 | CALUMET CY | IL |
| 2015-12-01 | 708-933-2XXX | 2000–2999 | Assigned | LEVEL 3 TELECOM OF ILLINOIS, LLC - IL | 138G | CALUMET CY | IL |
| 2005-07-15 | 708-933-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL | 7196 | CALUMET CY | IL |
| — | 708-933-4XXX | 4000–4999 | Available | CALUMET CY | IL | ||
| 2021-02-02 | 708-933-5XXX | 5000–5999 | Assigned | ONVOY, LLC | 224C | CALUMET CY | IL |
| 2006-10-02 | 708-933-6XXX | 6000–6999 | Assigned | COMCAST IP PHONE, LLC | 318J | CALUMET CY | IL |
| 2006-10-02 | 708-933-7XXX | 7000–7999 | Assigned | COMCAST IP PHONE, LLC | 318J | CALUMET CY | IL |
| 2011-06-07 | 708-933-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - IL | 984E | CALUMET CY | IL |
| 2013-10-01 | 708-933-9XXX | 9000–9999 | Assigned | PEERLESS NETWORK OF ILLINOIS, LLC - IL | 063E | CALUMET CY | IL |
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.