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 803
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2021-01-29 | 803-723-5XXX | 5000–5999 | Assigned | COMCAST IP PHONE, LLC | 318J | NEWBERRY | SC |
| 2021-01-26 | 803-964-1XXX | 1000–1999 | Assigned | COMCAST IP PHONE, LLC | 318J | HAMPTON | SC |
| 2020-12-18 | 803-961-7XXX | 7000–7999 | Assigned | COMCAST IP PHONE, LLC | 318J | AIKEN | SC |
| 2015-09-23 | 803-510-4XXX | 4000–4999 | Assigned | COMCAST IP PHONE, LLC | 318J | NO AUGUSTA | SC |
| 2015-08-10 | 803-474-5XXX | 5000–5999 | Assigned | COMCAST IP PHONE, LLC | 318J | NO AUGUSTA | SC |
| 2014-01-16 | 803-599-5XXX | 5000–5999 | Assigned | COMCAST IP PHONE, LLC | 318J | NO AUGUSTA | SC |
| 2012-03-22 | 803-599-7XXX | 7000–7999 | Assigned | COMCAST IP PHONE, LLC | 318J | NO AUGUSTA | SC |
| 2008-02-08 | 803-426-8XXX | 8000–8999 | Assigned | COMCAST IP PHONE, LLC | 318J | NO AUGUSTA | SC |
| 2007-04-16 | 803-426-1XXX | 1000–1999 | Assigned | COMCAST IP PHONE, LLC | 318J | NO AUGUSTA | SC |
| 2006-01-16 | 803-265-1XXX | 1000–1999 | Assigned | COMCAST IP PHONE, LLC | 318J | BEECH IS | SC |
| 2006-01-16 | 803-341-9XXX | 9000–9999 | Assigned | COMCAST IP PHONE, LLC | 318J | NO AUGUSTA | SC |
| 2006-01-16 | 803-380-1XXX | 1000–1999 | Assigned | COMCAST IP PHONE, LLC | 318J | BATH | SC |
| 2006-01-16 | 803-392-8XXX | 8000–8999 | Assigned | COMCAST IP PHONE, LLC | 318J | GRANITEVL | SC |
| 2006-01-16 | 803-480-8XXX | 8000–8999 | Assigned | COMCAST IP PHONE, LLC | 318J | JOHNSTON | SC |
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.