NumberResearchThousands-blocks in 870-203
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 870-203 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 870 blocks
Most active assignees, all time — NPA 870
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 |
|---|---|---|---|---|---|---|---|
| 2009-07-08 | 870-203-0XXX | 0000–0999 | Assigned | TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR | 048G | JONESBORO | AR |
| 2023-12-07 | 870-203-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR | 6805 | JONESBORO | AR |
| 2022-06-16 | 870-203-2XXX | 2000–2999 | Assigned | ONVOY SPECTRUM, LLC | 624H | JONESBORO | AR |
| 2011-07-20 | 870-203-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | JONESBORO | AR |
| 2011-07-20 | 870-203-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | JONESBORO | AR |
| 2011-07-20 | 870-203-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | JONESBORO | AR |
| 2011-03-21 | 870-203-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | JONESBORO | AR |
| 2009-01-15 | 870-203-7XXX | 7000–7999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - AR | 802C | JONESBORO | AR |
| 2011-08-01 | 870-203-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | JONESBORO | AR |
| 2010-10-25 | 870-203-9XXX | 9000–9999 | Assigned | TCA COMMUNICATIONS, LLC DBA SUDDENLINK COMM - AR | 048G | JONESBORO | AR |
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.