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 317
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 |
|---|---|---|---|---|---|---|---|
| 2005-05-31 | 317-688-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IN | 4803 | CARMEL | IN |
| 2005-05-27 | 317-214-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN | 7440 | NOBLESVL | IN |
| 2005-05-27 | 317-215-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN | 7440 | GREENWOOD | IN |
| 2005-05-27 | 317-395-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN | 7440 | SHELBYVL | IN |
| 2005-05-27 | 317-468-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN | 7440 | GREENFIELD | IN |
| 2005-05-27 | 317-584-0XXX | 0000–0999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN | 7440 | MOORESVL | IN |
| 2005-05-27 | 317-622-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN | 7440 | CUMBERLAND | IN |
| 2005-05-20 | 317-491-0XXX | 0000–0999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | INDIANAPLS | IN |
| 2005-05-17 | 317-669-5XXX | 5000–5999 | Assigned | LEVEL 3 TELECOM OF INDIANA, LP - IN | 7060 | CARMEL | IN |
| 2005-05-11 | 317-405-8XXX | 8000–8999 | Assigned | COMCAST IP PHONE, LLC | 318J | INDIANAPLS | IN |
| 2005-05-11 | 317-405-9XXX | 9000–9999 | Assigned | COMCAST IP PHONE, LLC | 318J | INDIANAPLS | IN |
| 2005-05-10 | 317-448-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN | 6725 | GREENFIELD | IN |
| 2005-05-10 | 317-448-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN | 6725 | GREENFIELD | IN |
| 2005-05-10 | 317-548-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IN | 4803 | WESTNEWTON | IN |
| 2005-05-10 | 317-564-5XXX | 5000–5999 | Assigned | LEVEL 3 TELECOM OF INDIANA, LP - IN | 7060 | CARMEL | IN |
| 2005-05-10 | 317-642-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN | 6725 | SHELBYVL | IN |
| 2005-05-06 | 317-747-9XXX | 9000–9999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN | 7440 | FORTVILLE | IN |
| 2005-05-05 | 317-427-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IN | 4803 | FAIRLAND | IN |
| 2005-05-05 | 317-522-2XXX | 2000–2999 | Assigned | PAETEC ITEL, LLC | 829J | INDIANAPLS | IN |
| 2005-05-02 | 317-918-4XXX | 4000–4999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | INDIANAPLS | IN |
| 2005-05-02 | 317-918-5XXX | 5000–5999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | INDIANAPLS | IN |
| 2005-05-02 | 317-918-7XXX | 7000–7999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | INDIANAPLS | IN |
| 2005-05-02 | 317-918-8XXX | 8000–8999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | INDIANAPLS | IN |
| 2005-04-27 | 317-217-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | INDIANAPLS | IN |
| 2005-04-27 | 317-217-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | INDIANAPLS | IN |
| 2005-04-27 | 317-260-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | INDIANAPLS | IN |
| 2005-04-27 | 317-270-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | INDIANAPLS | IN |
| 2005-04-27 | 317-287-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | INDIANAPLS | IN |
| 2005-04-27 | 317-292-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | INDIANAPLS | IN |
| 2005-04-27 | 317-361-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | INDIANAPLS | IN |
| 2005-04-27 | 317-361-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | INDIANAPLS | IN |
| 2005-04-27 | 317-361-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | INDIANAPLS | IN |
| 2005-04-27 | 317-366-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | INDIANAPLS | IN |
| 2005-04-27 | 317-405-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | INDIANAPLS | IN |
| 2005-04-26 | 317-203-7XXX | 7000–7999 | Assigned | PAETEC ITEL, LLC | 829J | PLAINFIELD | IN |
| 2005-04-22 | 317-203-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN | 7440 | PLAINFIELD | IN |
| 2005-04-22 | 317-456-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN | 7440 | BROWNSBURG | IN |
| 2005-04-18 | 317-708-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IN | 4803 | CARMEL | IN |
| 2005-04-18 | 317-708-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - IN | 4803 | CARMEL | IN |
| 2005-04-13 | 317-448-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN | 6725 | GREENFIELD | IN |
| 2005-04-11 | 317-491-7XXX | 7000–7999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | INDIANAPLS | IN |
| 2005-04-11 | 317-491-8XXX | 8000–8999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | INDIANAPLS | IN |
| 2005-04-07 | 317-386-3XXX | 3000–3999 | Assigned | COMCAST IP PHONE, LLC | 318J | DANVILLE | IN |
| 2005-04-04 | 317-777-2XXX | 2000–2999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | INDIANAPLS | IN |
| 2005-04-04 | 317-777-3XXX | 3000–3999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | INDIANAPLS | IN |
| 2005-04-04 | 317-777-4XXX | 4000–4999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | INDIANAPLS | IN |
| 2005-04-04 | 317-777-5XXX | 5000–5999 | Assigned | OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC | 2964 | INDIANAPLS | IN |
| 2005-04-01 | 317-669-3XXX | 3000–3999 | Assigned | LEVEL 3 TELECOM OF INDIANA, LP - IN | 7060 | CARMEL | IN |
| 2005-04-01 | 317-669-4XXX | 4000–4999 | Assigned | LEVEL 3 TELECOM OF INDIANA, LP - IN | 7060 | CARMEL | IN |
| 2005-03-30 | 317-537-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | FISHERS | IN |
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.