NumberResearchRecent thousands-block assignments
12 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, last 30 days — NPA 608
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 |
|---|---|---|---|---|---|---|---|
| 2007-03-19 | 608-906-7XXX | 7000–7999 | Assigned | TDS METROCOM, LLC | 520K | MADISON | WI |
| 2007-03-19 | 608-906-8XXX | 8000–8999 | Assigned | TDS METROCOM, LLC | 520K | MADISON | WI |
| 2007-03-15 | 608-406-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LA CROSSE | WI |
| 2007-03-14 | 608-299-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BELOIT | WI |
| 2007-03-14 | 608-451-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | BANGOR | WI |
| 2007-03-05 | 608-512-4XXX | 4000–4999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC WI | 7216 | MADISON | WI |
| 2007-03-05 | 608-897-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | BRODHEAD | WI |
| 2007-03-01 | 608-399-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | HOLMEN | WI |
| 2007-02-28 | 608-417-1XXX | 1000–1999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | MADISON | WI |
| 2007-02-28 | 608-417-2XXX | 2000–2999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | MADISON | WI |
| 2007-02-28 | 608-417-3XXX | 3000–3999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | MADISON | WI |
| 2007-02-28 | 608-417-4XXX | 4000–4999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | MADISON | WI |
| 2007-02-28 | 608-417-5XXX | 5000–5999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | MADISON | WI |
| 2007-02-28 | 608-417-6XXX | 6000–6999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | MADISON | WI |
| 2007-02-28 | 608-417-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | MADISON | WI |
| 2007-02-28 | 608-417-8XXX | 8000–8999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | MADISON | WI |
| 2007-02-27 | 608-636-2XXX | 2000–2999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | NEW GLARUS | WI |
| 2007-02-16 | 608-396-1XXX | 1000–1999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | MELROSE | WI |
| 2007-02-15 | 608-316-6XXX | 6000–6999 | Assigned | PAETEC ITEL, LLC | 829J | MADISON | WI |
| 2007-02-08 | 608-886-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | MADISON | WI |
| 2007-02-08 | 608-886-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | MADISON | WI |
| 2007-02-08 | 608-957-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | MADISON | WI |
| 2007-02-08 | 608-957-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | MADISON | WI |
| 2007-02-06 | 608-487-9XXX | 9000–9999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | SPARTA | WI |
| 2007-02-06 | 608-567-0XXX | 0000–0999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | TOMAH | WI |
| 2007-02-06 | 608-630-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | MADISON | WI |
| 2007-01-22 | 608-205-6XXX | 6000–6999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | STOUGHTON | WI |
| 2007-01-15 | 608-519-2XXX | 2000–2999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | LA CROSSE | WI |
| 2007-01-15 | 608-579-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | MCFARLAND | WI |
| 2006-12-28 | 608-566-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | PORTAGE | WI |
| 2006-12-27 | 608-319-2XXX | 2000–2999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | DODGEVILLE | WI |
| 2006-12-27 | 608-401-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | MAZOMANIE | WI |
| 2006-12-27 | 608-583-0XXX | 0000–0999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | LONE ROCK | WI |
| 2006-12-27 | 608-623-0XXX | 0000–0999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | COBB | WI |
| 2006-12-27 | 608-635-0XXX | 0000–0999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | POYNETTE | WI |
| 2006-12-27 | 608-924-0XXX | 0000–0999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | RIDGEWAY | WI |
| 2006-12-27 | 608-943-0XXX | 0000–0999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | MONTFORT | WI |
| 2006-12-21 | 608-291-2XXX | 2000–2999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | OREGON | WI |
| 2006-12-21 | 608-359-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | JANESVILLE | WI |
| 2006-12-21 | 608-563-2XXX | 2000–2999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | JANESVILLE | WI |
| 2006-12-11 | 608-738-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | LA CROSSE | WI |
| 2006-12-11 | 608-738-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | LA CROSSE | WI |
| 2006-12-07 | 608-322-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | JANESVILLE | WI |
| 2006-12-07 | 608-630-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | MADISON | WI |
| 2006-12-06 | 608-580-0XXX | 0000–0999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | MILTON | WI |
| 2006-11-14 | 608-497-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | VERONA | WI |
| 2006-11-03 | 608-408-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | BRIGGSVL | WI |
| 2006-10-16 | 608-830-5XXX | 5000–5999 | Assigned | MID-PLAINS TEL., INC. | 0881 | MIDDLETON | WI |
| 2006-10-11 | 608-448-4XXX | 4000–4999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | BARABOO | WI |
| 2006-10-09 | 608-630-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | MADISON | WI |
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.