NumberResearchRecent thousands-block assignments
14 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 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 |
|---|---|---|---|---|---|---|---|
| 2015-07-22 | 413-758-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WARE | MA |
| 2015-07-21 | 413-676-5XXX | 5000–5999 | Assigned | COMCAST IP PHONE, LLC | 318J | TURNERSFLS | MA |
| 2015-07-15 | 413-344-9XXX | 9000–9999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | PITTSFIELD | MA |
| 2015-06-26 | 413-333-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | SPRINGFLD | MA |
| 2015-06-26 | 413-500-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MA | 892D | MONROE BDG | MA |
| 2015-06-26 | 413-600-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MA | 892D | STOCKBDG | MA |
| 2015-06-26 | 413-800-0XXX | 0000–0999 | Assigned | ONVOY, LLC - MA | 892D | AMHERST | MA |
| 2015-06-11 | 413-372-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MA | 4018 | SPRINGFLD | MA |
| 2015-06-04 | 413-400-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | MONTAGUE | MA |
| 2015-06-04 | 413-526-7XXX | 7000–7999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | ELONGMEDOW | MA |
| 2015-06-04 | 413-544-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | PALMER | MA |
| 2015-06-03 | 413-444-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | BERNARDSTN | MA |
| 2015-05-12 | 413-333-5XXX | 5000–5999 | Assigned | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SPRINGFLD | MA |
| 2015-05-04 | 413-316-1XXX | 1000–1999 | Assigned | PAETEC ITEL, LLC | 829J | SPRINGFLD | MA |
| 2015-04-30 | 413-378-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | CHICOPEE | MA |
| 2015-04-29 | 413-459-8XXX | 8000–8999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | CHICOPEE | MA |
| 2015-04-29 | 413-474-8XXX | 8000–8999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | CHICOPEE | MA |
| 2015-04-28 | 413-409-3XXX | 3000–3999 | Assigned | PAETEC ITEL, LLC | 829J | HOLYOKE | MA |
| 2015-04-27 | 413-353-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - MA | 990E | HOUSATONIC | MA |
| 2015-04-17 | 413-610-2XXX | 2000–2999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | LUDLOW | MA |
| 2015-04-03 | 413-406-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | AMHERST | MA |
| 2015-03-17 | 413-217-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | WILLIAMSTN | MA |
| 2015-03-17 | 413-238-8XXX | 8000–8999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | WORTHINGTN | MA |
| 2015-03-17 | 413-258-9XXX | 9000–9999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | SANDISFLD | MA |
| 2015-03-17 | 413-340-8XXX | 8000–8999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | WILLIAMSBG | MA |
| 2015-03-17 | 413-372-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | SPRINGFLD | MA |
| 2015-03-17 | 413-385-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | LUDLOW | MA |
| 2015-03-17 | 413-400-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | MONTAGUE | MA |
| 2015-03-17 | 413-422-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | MILLERSFLS | MA |
| 2015-03-17 | 413-424-5XXX | 5000–5999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | MONROE BDG | MA |
| 2015-03-17 | 413-449-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | PITTSFIELD | MA |
| 2015-03-17 | 413-544-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | PALMER | MA |
| 2015-03-17 | 413-569-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | SOUTHWICK | MA |
| 2015-03-17 | 413-625-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | SHELBUNFLS | MA |
| 2015-03-17 | 413-728-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | LENOX | MA |
| 2015-03-17 | 413-862-6XXX | 6000–6999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | RUSSELL | MA |
| 2015-03-17 | 413-931-9XXX | 9000–9999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | STOCKBDG | MA |
| 2015-03-16 | 413-240-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | CHICOPEE | MA |
| 2015-03-16 | 413-252-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MA | 4018 | BELCHERTN | MA |
| 2015-03-16 | 413-300-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | DALTON | MA |
| 2015-03-16 | 413-307-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | ADAMS | MA |
| 2015-03-16 | 413-318-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | ELONGMEDOW | MA |
| 2015-03-16 | 413-369-5XXX | 5000–5999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | CONWAY | MA |
| 2015-03-16 | 413-406-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | AMHERST | MA |
| 2015-03-16 | 413-407-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | CHESTER | MA |
| 2015-03-16 | 413-559-2XXX | 2000–2999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | AMHRSTFKLN | MA |
| 2015-03-16 | 413-595-6XXX | 6000–6999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | HAMPDEN | MA |
| 2015-03-16 | 413-645-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | GREATBNGTN | MA |
| 2015-03-16 | 413-666-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | GRANVILLE | MA |
| 2015-03-16 | 413-740-3XXX | 3000–3999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | CUMMINGTON | MA |
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.