NumberResearchRecent thousands-block assignments
11 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 309
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 |
|---|---|---|---|---|---|---|---|
| 2010-01-21 | 309-485-1XXX | 1000–1999 | Assigned | MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL | 846F | HUDSON | IL |
| 2010-01-21 | 309-488-1XXX | 1000–1999 | Assigned | MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL | 846F | FARMERCITY | IL |
| 2010-01-21 | 309-490-1XXX | 1000–1999 | Assigned | MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL | 846F | LEXINGTON | IL |
| 2010-01-21 | 309-491-1XXX | 1000–1999 | Assigned | MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL | 846F | MCLEAN | IL |
| 2010-01-21 | 309-498-1XXX | 1000–1999 | Assigned | MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL | 846F | HEYWORTH | IL |
| 2010-01-21 | 309-565-1XXX | 1000–1999 | Assigned | MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL | 846F | HANNA CITY | IL |
| 2010-01-21 | 309-576-3XXX | 3000–3999 | Assigned | MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL | 846F | MOSSVILLE | IL |
| 2010-01-21 | 309-722-5XXX | 5000–5999 | Assigned | MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL | 846F | BELLFLOWER | IL |
| 2010-01-21 | 309-723-1XXX | 1000–1999 | Assigned | MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL | 846F | COLFAX | IL |
| 2010-01-21 | 309-739-1XXX | 1000–1999 | Assigned | MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL | 846F | SECOR | IL |
| 2010-01-21 | 309-741-1XXX | 1000–1999 | Assigned | MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL | 846F | ELMWOOD | IL |
| 2010-01-21 | 309-822-1XXX | 1000–1999 | Assigned | MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL | 846F | SPRING BAY | IL |
| 2010-01-21 | 309-893-0XXX | 0000–0999 | Assigned | MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL | 846F | SAYBROOK | IL |
| 2010-01-21 | 309-921-1XXX | 1000–1999 | Assigned | MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL | 846F | ROANOKE | IL |
| 2010-01-21 | 309-964-1XXX | 1000–1999 | Assigned | MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL | 846F | GOODFIELD | IL |
| 2010-01-18 | 309-349-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | PEKIN | IL |
| 2010-01-13 | 309-603-9XXX | 9000–9999 | Assigned | MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL | 846F | CHILLICOTH | IL |
| 2010-01-07 | 309-351-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | GALESBURG | IL |
| 2010-01-07 | 309-573-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | PEORIA | IL |
| 2010-01-07 | 309-831-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | BLOOMINGTN | IL |
| 2009-12-22 | 309-326-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - IL | 7136 | CANTON | IL |
| 2009-12-21 | 309-423-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | PEORIA | IL |
| 2009-10-06 | 309-831-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | BLOOMINGTN | IL |
| 2009-10-05 | 309-278-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | EASTMOLINE | IL |
| 2009-10-05 | 309-751-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | EASTMOLINE | IL |
| 2009-10-05 | 309-752-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | EASTMOLINE | IL |
| 2009-09-29 | 309-501-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | WASHINGTON | IL |
| 2009-09-29 | 309-613-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | PEKIN | IL |
| 2009-09-28 | 309-989-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | PEORIA | IL |
| 2009-09-28 | 309-989-5XXX | 5000–5999 | Assigned | T-MOBILE USA, INC. | 6529 | PEORIA | IL |
| 2009-09-28 | 309-989-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | PEORIA | IL |
| 2009-09-08 | 309-613-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | PEKIN | IL |
| 2009-09-02 | 309-524-2XXX | 2000–2999 | Assigned | ILLINOIS BELL TEL CO | 9329 | MOLINE | IL |
| 2009-08-10 | 309-428-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | ROCKISLAND | IL |
| 2009-08-10 | 309-660-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | BLOOMINGTN | IL |
| 2009-08-04 | 309-489-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | GENESEO | IL |
| 2009-08-04 | 309-533-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | BLOOMINGTN | IL |
| 2009-07-22 | 309-621-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | PEORIA | IL |
| 2009-06-11 | 309-445-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - IL | 7136 | BLOOMINGTN | IL |
| 2009-06-11 | 309-864-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - IL | 7136 | MACOMB | IL |
| 2009-06-04 | 309-428-2XXX | 2000–2999 | Assigned | T-MOBILE USA, INC. | 6529 | ROCKISLAND | IL |
| 2009-05-18 | 309-750-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | BLOOMINGTN | IL |
| 2009-04-07 | 309-857-0XXX | 0000–0999 | Assigned | ONVOY, LLC | 224C | PEORIA | IL |
| 2009-04-06 | 309-351-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | GALESBURG | IL |
| 2009-04-06 | 309-428-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | ROCKISLAND | IL |
| 2009-04-06 | 309-620-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | PEKIN | IL |
| 2009-03-09 | 309-573-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | PEORIA | IL |
| 2009-03-09 | 309-713-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | PEORIA | IL |
| 2009-03-04 | 309-550-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | PEORIA | IL |
| 2009-02-06 | 309-278-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | EASTMOLINE | IL |
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.