NumberResearchRecent thousands-block assignments
12 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 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 |
|---|---|---|---|---|---|---|---|
| 2006-01-16 | 608-897-9XXX | 9000–9999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | BRODHEAD | WI |
| 2006-01-12 | 608-302-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | JANESVILLE | WI |
| 2006-01-12 | 608-314-4XXX | 4000–4999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | JANESVILLE | WI |
| 2006-01-12 | 608-314-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | JANESVILLE | WI |
| 2006-01-12 | 608-314-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | JANESVILLE | WI |
| 2006-01-12 | 608-314-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | JANESVILLE | WI |
| 2005-12-29 | 608-254-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WI | 5489 | WISCONDLLS | WI |
| 2005-12-27 | 608-443-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | MADISON | WI |
| 2005-12-13 | 608-312-2XXX | 2000–2999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | BELOIT | WI |
| 2005-12-13 | 608-467-7XXX | 7000–7999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | MADISON | WI |
| 2005-12-12 | 608-370-7XXX | 7000–7999 | Assigned | TDS METROCOM, LLC | 520K | SAUK CITY | WI |
| 2005-12-12 | 608-448-0XXX | 0000–0999 | Assigned | TDS METROCOM, LLC | 520K | BARABOO | WI |
| 2005-12-12 | 608-566-2XXX | 2000–2999 | Assigned | TDS METROCOM, LLC | 520K | PORTAGE | WI |
| 2005-12-08 | 608-205-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WI | 5489 | STOUGHTON | WI |
| 2005-11-30 | 608-738-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | LA CROSSE | WI |
| 2005-11-28 | 608-253-0XXX | 0000–0999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | WISCONDLLS | WI |
| 2005-11-28 | 608-383-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | RICHLD CTR | WI |
| 2005-11-28 | 608-399-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | HOLMEN | WI |
| 2005-11-28 | 608-588-0XXX | 0000–0999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | SPG GREEN | WI |
| 2005-11-28 | 608-592-0XXX | 0000–0999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | LODI | WI |
| 2005-11-28 | 608-987-0XXX | 0000–0999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | MINERAL PT | WI |
| 2005-11-14 | 608-729-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WI | 5489 | MADISON | WI |
| 2005-10-24 | 608-210-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | MADISON | WI |
| 2005-09-30 | 608-354-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | MADISON | WI |
| 2005-09-30 | 608-354-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | MADISON | WI |
| 2005-09-28 | 608-554-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WI | 5489 | JANESVILLE | WI |
| 2005-09-22 | 608-443-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | MADISON | WI |
| 2005-09-12 | 608-291-1XXX | 1000–1999 | Assigned | TDS METROCOM, LLC | 520K | OREGON | WI |
| 2005-09-06 | 608-237-8XXX | 8000–8999 | Assigned | PAETEC ITEL, LLC | 829J | MADISON | WI |
| 2005-09-06 | 608-316-1XXX | 1000–1999 | Assigned | PAETEC ITEL, LLC | 829J | MADISON | WI |
| 2005-09-06 | 608-316-2XXX | 2000–2999 | Assigned | PAETEC ITEL, LLC | 829J | MADISON | WI |
| 2005-08-29 | 608-318-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | SUNPRAIRIE | WI |
| 2005-08-25 | 608-467-8XXX | 8000–8999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | MADISON | WI |
| 2005-08-23 | 608-302-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | JANESVILLE | WI |
| 2005-08-12 | 608-237-6XXX | 6000–6999 | Assigned | PAETEC ITEL, LLC | 829J | MADISON | WI |
| 2005-08-12 | 608-237-7XXX | 7000–7999 | Assigned | PAETEC ITEL, LLC | 829J | MADISON | WI |
| 2005-08-10 | 608-519-0XXX | 0000–0999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | LA CROSSE | WI |
| 2005-08-09 | 608-354-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | MADISON | WI |
| 2005-08-09 | 608-354-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | MADISON | WI |
| 2005-07-27 | 608-498-2XXX | 2000–2999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | LA CROSSE | WI |
| 2005-07-27 | 608-498-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | LA CROSSE | WI |
| 2005-07-27 | 608-498-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | LA CROSSE | WI |
| 2005-07-27 | 608-498-6XXX | 6000–6999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | LA CROSSE | WI |
| 2005-07-27 | 608-498-7XXX | 7000–7999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | LA CROSSE | WI |
| 2005-07-27 | 608-498-8XXX | 8000–8999 | Assigned | UNITED STATES CELLULAR - WI | 6274 | LA CROSSE | WI |
| 2005-06-29 | 608-354-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | MADISON | WI |
| 2005-06-29 | 608-354-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | MADISON | WI |
| 2005-06-29 | 608-354-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | MADISON | WI |
| 2005-06-28 | 608-415-6XXX | 6000–6999 | Assigned | FRONTIER NORTH INC. - WI | 0886 | REEDSBURG | WI |
| 2005-05-31 | 608-237-3XXX | 3000–3999 | Assigned | PAETEC ITEL, LLC | 829J | MADISON | 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.