NumberResearchRecent thousands-block assignments
9 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026
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, last 30 days — NPA 920
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 |
|---|---|---|---|---|---|---|---|
| 2004-06-01 | 920-239-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WI | 5489 | WAUPUN | WI |
| 2004-06-01 | 920-332-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WI | 5489 | BRANDON | WI |
| 2004-06-01 | 920-541-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WI | 5489 | JEFFERSON | WI |
| 2004-06-01 | 920-542-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WI | 5489 | FTATKINSON | WI |
| 2004-06-01 | 920-543-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WI | 5489 | BURNETT | WI |
| 2004-06-01 | 920-626-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WI | 5489 | COLUMBUS | WI |
| 2004-06-01 | 920-643-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WI | 5489 | HORICON | WI |
| 2004-06-01 | 920-644-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WI | 5489 | MAYVILLE | WI |
| 2004-05-25 | 920-252-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | OSHKOSH | WI |
| 2004-04-23 | 920-569-7XXX | 7000–7999 | Assigned | PAETEC ITEL, LLC | 829J | GREEN BAY | WI |
| 2004-04-13 | 920-238-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | FONDDU LAC | WI |
| 2004-04-08 | 920-632-4XXX | 4000–4999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | DE PERE | WI |
| 2004-03-24 | 920-471-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | GREEN BAY | WI |
| 2004-03-15 | 920-351-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WI | 5489 | DE PERE | WI |
| 2004-03-15 | 920-779-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WI | 5489 | HORTONVL | WI |
| 2004-03-10 | 920-838-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | PLYMOUTH | WI |
| 2004-03-10 | 920-838-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | PLYMOUTH | WI |
| 2004-03-10 | 920-838-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | PLYMOUTH | WI |
| 2004-03-10 | 920-838-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | PLYMOUTH | WI |
| 2004-02-24 | 920-471-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | GREEN BAY | WI |
| 2004-01-19 | 920-471-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | GREEN BAY | WI |
| 2004-01-12 | 920-558-4XXX | 4000–4999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | NEENAH | WI |
| 2003-12-31 | 920-471-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | GREEN BAY | WI |
| 2003-11-18 | 920-456-8XXX | 8000–8999 | Assigned | PAETEC ITEL, LLC | 829J | OSHKOSH | WI |
| 2003-11-18 | 920-636-4XXX | 4000–4999 | Assigned | PAETEC ITEL, LLC | 829J | APPLETON | WI |
| 2003-10-28 | 920-593-8XXX | 8000–8999 | Assigned | TDS METROCOM, LLC | 520K | GREEN BAY | WI |
| 2003-09-19 | 920-753-7XXX | 7000–7999 | Assigned | FRONTIER NORTH INC. - WI | 0886 | MT CALVARY | WI |
| 2003-09-04 | 920-839-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | BAILEYSHBR | WI |
| 2003-07-30 | 920-527-2XXX | 2000–2999 | Assigned | WISCONSIN BELL INC | 9327 | OSHKOSH | WI |
| 2003-07-30 | 920-527-3XXX | 3000–3999 | Assigned | WISCONSIN BELL INC | 9327 | OSHKOSH | WI |
| 2003-07-30 | 920-527-4XXX | 4000–4999 | Assigned | WISCONSIN BELL INC | 9327 | OSHKOSH | WI |
| 2003-07-30 | 920-527-5XXX | 5000–5999 | Assigned | WISCONSIN BELL INC | 9327 | OSHKOSH | WI |
| 2003-07-30 | 920-527-6XXX | 6000–6999 | Assigned | WISCONSIN BELL INC | 9327 | OSHKOSH | WI |
| 2003-07-30 | 920-527-7XXX | 7000–7999 | Assigned | WISCONSIN BELL INC | 9327 | OSHKOSH | WI |
| 2003-07-29 | 920-482-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WI | 5489 | MANITOWOC | WI |
| 2003-07-18 | 920-478-5XXX | 5000–5999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC WI | 7216 | WATERLOO | WI |
| 2003-07-16 | 920-593-9XXX | 9000–9999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | GREEN BAY | WI |
| 2003-04-29 | 920-327-0XXX | 0000–0999 | Assigned | T-MOBILE USA, INC. | 6529 | GREEN BAY | WI |
| — | 920-227-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WI | 5489 | GREEN BAY | WI |
| — | 920-347-0XXX | 0000–0999 | Assigned | TDS METROCOM, LLC | 520K | DE PERE | WI |
| — | 920-347-1XXX | 1000–1999 | Assigned | TDS METROCOM, LLC | 520K | DE PERE | WI |
| — | 920-347-2XXX | 2000–2999 | Assigned | TDS METROCOM, LLC | 520K | DE PERE | WI |
| — | 920-347-3XXX | 3000–3999 | Assigned | TDS METROCOM, LLC | 520K | DE PERE | WI |
| — | 920-347-4XXX | 4000–4999 | Assigned | TDS METROCOM, LLC | 520K | DE PERE | WI |
| — | 920-347-9XXX | 9000–9999 | Assigned | TDS METROCOM, LLC | 520K | DE PERE | WI |
| — | 920-364-0XXX | 0000–0999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | APPLETON | WI |
| — | 920-385-0XXX | 0000–0999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | OSHKOSH | WI |
| — | 920-507-0XXX | 0000–0999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | SHERWOOD | WI |
| — | 920-544-0XXX | 0000–0999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | GREEN BAY | WI |
| — | 920-548-1XXX | 1000–1999 | Assigned | TDS METROCOM, LLC | 520K | GREEN BAY | WI |
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.