NumberResearchRecent thousands-block assignments
14 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 413
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 |
|---|---|---|---|---|---|---|---|
| 2006-04-17 | 413-386-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | SPRINGFLD | MA |
| 2006-04-10 | 413-676-3XXX | 3000–3999 | Assigned | PAETEC ITEL, LLC | 829J | TURNERSFLS | MA |
| 2006-04-04 | 413-274-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | HOUSATONIC | MA |
| 2006-04-04 | 413-298-2XXX | 2000–2999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | STOCKBDG | MA |
| 2006-04-04 | 413-424-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | MONROE BDG | MA |
| 2006-04-03 | 413-325-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | GREENFIELD | MA |
| 2006-03-31 | 413-331-1XXX | 1000–1999 | Assigned | PAETEC ITEL, LLC | 829J | CHICOPEE | MA |
| 2006-03-30 | 413-754-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MA | 4018 | LONGMEADOW | MA |
| 2006-03-24 | 413-505-5XXX | 5000–5999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SPRINGFLD | MA |
| 2006-03-22 | 413-306-6XXX | 6000–6999 | Assigned | PAETEC ITEL, LLC | 829J | SPRINGFLD | MA |
| 2006-03-15 | 413-591-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | GREATBNGTN | MA |
| 2006-03-13 | 413-232-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MA | 4018 | W STOCKBDG | MA |
| 2006-03-13 | 413-322-8XXX | 8000–8999 | Assigned | COMCAST IP PHONE, LLC | 318J | HOLYOKE | MA |
| 2006-03-13 | 413-322-9XXX | 9000–9999 | Assigned | COMCAST IP PHONE, LLC | 318J | HOLYOKE | MA |
| 2006-03-09 | 413-200-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | CUMMINGTON | MA |
| 2006-03-09 | 413-242-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | PITTSFIELD | MA |
| 2006-03-09 | 413-370-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | PALMER | MA |
| 2006-03-09 | 413-387-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | NORTHAMPTN | MA |
| 2006-03-09 | 413-426-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | SPRINGFLD | MA |
| 2006-03-09 | 413-475-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | GREENFIELD | MA |
| 2006-03-09 | 413-497-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | GILBERTVL | MA |
| 2006-03-09 | 413-548-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | AMHRSTFKLN | MA |
| 2006-03-09 | 413-551-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | LENOX | MA |
| 2006-03-09 | 413-561-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | HOLYOKE | MA |
| 2006-03-09 | 413-749-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | ADAMS | MA |
| 2006-03-09 | 413-848-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | BLANDFORD | MA |
| 2006-03-07 | 413-303-7XXX | 7000–7999 | Assigned | PAETEC ITEL, LLC | 829J | EASTHAMPTN | MA |
| 2006-03-06 | 413-654-1XXX | 1000–1999 | Assigned | IP HORIZON LLC | 515J | SPRINGFLD | MA |
| 2006-03-01 | 413-213-6XXX | 6000–6999 | Assigned | PAETEC ITEL, LLC | 829J | BELCHERTN | MA |
| 2006-02-23 | 413-230-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | AMHERST | MA |
| 2006-02-23 | 413-230-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | AMHERST | MA |
| 2006-02-13 | 413-362-8XXX | 8000–8999 | Assigned | PAETEC ITEL, LLC | 829J | AMHERST | MA |
| 2006-02-09 | 413-304-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | SPRINGFLD | MA |
| 2006-02-07 | 413-461-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | AMHERST | MA |
| 2006-01-23 | 413-495-1XXX | 1000–1999 | Assigned | PAETEC ITEL, LLC | 829J | SPRINGFLD | MA |
| 2006-01-20 | 413-338-3XXX | 3000–3999 | Assigned | PAETEC ITEL, LLC | 829J | WARREN | MA |
| 2006-01-06 | 413-313-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | HOLYOKE | MA |
| 2006-01-06 | 413-426-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | SPRINGFLD | MA |
| 2006-01-04 | 413-387-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | NORTHAMPTN | MA |
| 2006-01-04 | 413-652-8XXX | 8000–8999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | NORTHADAMS | MA |
| 2006-01-03 | 413-841-3XXX | 3000–3999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | PITTSFIELD | MA |
| 2005-12-28 | 413-595-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MA | 4018 | HAMPDEN | MA |
| 2005-12-28 | 413-650-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MA | 4018 | HOLYOKE | MA |
| 2005-12-28 | 413-650-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MA | 4018 | HOLYOKE | MA |
| 2005-12-27 | 413-271-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | SPRINGFLD | MA |
| 2005-12-14 | 413-313-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | HOLYOKE | MA |
| 2005-12-12 | 413-273-1XXX | 1000–1999 | Assigned | COMCAST IP PHONE, LLC | 318J | SPRINGFLD | MA |
| 2005-12-12 | 413-363-0XXX | 0000–0999 | Assigned | COMCAST IP PHONE, LLC | 318J | SPRINGFLD | MA |
| 2005-12-09 | 413-251-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MA | 4018 | HINSDALE | MA |
| 2005-11-22 | 413-223-1XXX | 1000–1999 | Assigned | PAETEC ITEL, LLC | 829J | GREENFIELD | MA |
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.