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 319
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 |
|---|---|---|---|---|---|---|---|
| 2017-05-16 | 319-660-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | WILLIAMSBG | IA |
| 2017-05-16 | 319-698-6XXX | 6000–6999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | W CHESTER | IA |
| 2017-05-16 | 319-888-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | WATERLOO | IA |
| 2017-05-15 | 319-224-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | TROY MILLS | IA |
| 2017-05-15 | 319-318-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | VINTON | IA |
| 2017-05-15 | 319-345-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | REINBECK | IA |
| 2017-05-15 | 319-478-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | TRAER | IA |
| 2017-05-15 | 319-543-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | SOLON | IA |
| 2017-05-15 | 319-645-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | TIFFIN | IA |
| 2017-05-15 | 319-648-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | RIVERSIDE | IA |
| 2017-05-15 | 319-938-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | ROWLEY | IA |
| 2017-05-11 | 319-408-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | LISBON | IA |
| 2017-05-11 | 319-628-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | OXFORD | IA |
| 2017-05-11 | 319-629-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | LONE TREE | IA |
| 2017-05-11 | 319-642-4XXX | 4000–4999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | MARENGO | IA |
| 2017-05-11 | 319-723-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | NICHOLS | IA |
| 2017-05-11 | 319-820-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | MONTICELLO | IA |
| 2017-05-11 | 319-983-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | PARKERSBG | IA |
| 2017-05-10 | 319-245-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | GRUNDY CTR | IA |
| 2017-05-10 | 319-271-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | INDEPNDNCE | IA |
| 2017-05-10 | 319-631-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | IOWA CITY | IA |
| 2017-05-10 | 319-635-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | FAIRBANK | IA |
| 2017-05-10 | 319-636-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | HAZLETON | IA |
| 2017-05-10 | 319-987-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | JANESVILLE | IA |
| 2017-05-09 | 319-220-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | CENTRAL CY | IA |
| 2017-05-09 | 319-251-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | ANAMOSA | IA |
| 2017-05-09 | 319-299-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | BELLEPLAIN | IA |
| 2017-05-09 | 319-474-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | BRANDON | IA |
| 2017-05-09 | 319-575-9XXX | 9000–9999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | CEDARFALLS | IA |
| 2017-05-09 | 319-662-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | CONROY | IA |
| 2017-05-09 | 319-727-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | COGGON | IA |
| 2017-05-09 | 319-849-0XXX | 0000–0999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | CENTER PT | IA |
| 2017-05-09 | 319-984-3XXX | 3000–3999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | DENVER | IA |
| 2017-04-21 | 319-271-1XXX | 1000–1999 | Assigned | ONVOY, LLC - IA | 221F | INDEPNDNCE | IA |
| 2017-04-21 | 319-271-2XXX | 2000–2999 | Assigned | ONVOY, LLC - IA | 221F | INDEPNDNCE | IA |
| 2017-04-21 | 319-349-8XXX | 8000–8999 | Assigned | ONVOY, LLC - IA | 221F | WATERLOO | IA |
| 2017-04-21 | 319-349-9XXX | 9000–9999 | Assigned | ONVOY, LLC - IA | 221F | WATERLOO | IA |
| 2017-04-21 | 319-983-0XXX | 0000–0999 | Assigned | ONVOY, LLC - IA | 221F | PARKERSBG | IA |
| 2017-04-21 | 319-983-1XXX | 1000–1999 | Assigned | ONVOY, LLC - IA | 221F | PARKERSBG | IA |
| 2017-04-20 | 319-251-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - IA | 8344 | ANAMOSA | IA |
| 2017-04-19 | 319-591-3XXX | 3000–3999 | Assigned | UNITED STATES CELLULAR - IA | 6266 | WASHINGTON | IA |
| 2017-04-07 | 319-201-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MTPLEASANT | IA |
| 2017-04-07 | 319-527-8XXX | 8000–8999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WAPELLO | IA |
| 2017-04-03 | 319-252-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | WATERLOO | IA |
| 2017-04-03 | 319-252-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | WATERLOO | IA |
| 2017-03-24 | 319-671-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BURLINGTON | IA |
| 2017-03-03 | 319-528-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | DENMARK | IA |
| 2017-03-01 | 319-449-5XXX | 5000–5999 | Assigned | MCC TELEPHONY LLC | 593K | CEDAR RPDS | IA |
| 2017-02-24 | 319-249-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | CEDAR RPDS | IA |
| 2017-02-23 | 319-975-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IA | 9877 | ANAMOSA | IA |
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.