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 407
New assignments by month
Sep 2026
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2017-03-20 | 407-528-4XXX | 4000–4999 | Assigned | COMCAST IP PHONE, LLC | 318J | CELEBRATN | FL |
| 2016-02-26 | 407-675-5XXX | 5000–5999 | Assigned | COMCAST IP PHONE, LLC | 318J | ORLANDO | FL |
| 2015-03-12 | 407-979-7XXX | 7000–7999 | Assigned | COMCAST IP PHONE, LLC | 318J | ST CLOUD | FL |
| 2014-08-22 | 407-990-8XXX | 8000–8999 | Assigned | COMCAST IP PHONE, LLC | 318J | ORLANDO | FL |
| 2014-01-08 | 407-479-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | WKISSIMMEE | FL |
| 2009-05-20 | 407-910-6XXX | 6000–6999 | Assigned | COMCAST IP PHONE, LLC | 318J | KISSIMMEE | FL |
| 2009-04-16 | 407-369-6XXX | 6000–6999 | Assigned | COMCAST IP PHONE, LLC | 318J | ORLANDO | FL |
| 2009-04-16 | 407-369-7XXX | 7000–7999 | Assigned | COMCAST IP PHONE, LLC | 318J | ORLANDO | FL |
| 2009-02-06 | 407-540-8XXX | 8000–8999 | Assigned | COMCAST IP PHONE, LLC | 318J | ORLANDO | FL |
| 2008-08-08 | 407-567-9XXX | 9000–9999 | Assigned | COMCAST IP PHONE, LLC | 318J | ORLANDO | FL |
| 2008-02-20 | 407-371-0XXX | 0000–0999 | Assigned | COMCAST IP PHONE, LLC | 318J | ORLANDO | FL |
| 2007-11-08 | 407-544-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | MONTVERDE | FL |
| 2007-05-03 | 407-512-4XXX | 4000–4999 | Assigned | COMCAST IP PHONE, LLC | 318J | EASTORANGE | FL |
| 2007-05-03 | 407-605-8XXX | 8000–8999 | Assigned | COMCAST IP PHONE, LLC | 318J | WINDERMERE | FL |
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.