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 |
|---|---|---|---|---|---|---|---|
| 2005-11-22 | 413-824-6XXX | 6000–6999 | Assigned | METROPCS, INC. | 5562 | GREENFIELD | MA |
| 2005-10-17 | 413-203-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | EASTHAMPTN | MA |
| 2005-10-17 | 413-213-0XXX | 0000–0999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | BELCHERTN | MA |
| 2005-10-17 | 413-224-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | ELONGMEDOW | MA |
| 2005-10-17 | 413-245-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | BRIMFIELD | MA |
| 2005-10-17 | 413-271-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | SPRINGFLD | MA |
| 2005-10-17 | 413-279-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | WILBRAHAM | MA |
| 2005-10-17 | 413-315-9XXX | 9000–9999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | HOLYOKE | MA |
| 2005-10-17 | 413-324-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | PALMER | MA |
| 2005-10-17 | 413-387-0XXX | 0000–0999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | NORTHAMPTN | MA |
| 2005-10-17 | 413-461-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | AMHERST | MA |
| 2005-10-17 | 413-566-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | HAMPDEN | MA |
| 2005-10-17 | 413-610-0XXX | 0000–0999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | LUDLOW | MA |
| 2005-10-14 | 413-207-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | HUNTINGTON | MA |
| 2005-10-14 | 413-313-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | HOLYOKE | MA |
| 2005-10-14 | 413-426-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | SPRINGFLD | MA |
| 2005-10-14 | 413-636-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | SPRINGFLD | MA |
| 2005-10-12 | 413-331-0XXX | 0000–0999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | CHICOPEE | MA |
| 2005-10-03 | 413-429-8XXX | 8000–8999 | Assigned | RINGSQUARED TELECOM LLC | 3849 | GREATBNGTN | MA |
| 2005-09-21 | 413-386-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | SPRINGFLD | MA |
| 2005-09-21 | 413-477-1XXX | 1000–1999 | Assigned | COMCAST IP PHONE, LLC | 318J | GILBERTVL | MA |
| 2005-09-21 | 413-842-5XXX | 5000–5999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | DALTON | MA |
| 2005-09-13 | 413-277-0XXX | 0000–0999 | Assigned | COMCAST IP PHONE, LLC | 318J | WARE | MA |
| 2005-09-13 | 413-289-9XXX | 9000–9999 | Assigned | COMCAST IP PHONE, LLC | 318J | PALMER | MA |
| 2005-09-13 | 413-436-8XXX | 8000–8999 | Assigned | COMCAST IP PHONE, LLC | 318J | WARREN | MA |
| 2005-09-13 | 413-893-9XXX | 9000–9999 | Assigned | COMCAST IP PHONE, LLC | 318J | MONSON | MA |
| 2005-09-12 | 413-263-9XXX | 9000–9999 | Assigned | METROPCS, INC. | 5562 | SPRINGFLD | MA |
| 2005-09-07 | 413-658-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | AMHERST | MA |
| 2005-08-25 | 413-551-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MA | 4018 | LENOX | MA |
| 2005-08-25 | 413-551-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MA | 4018 | LENOX | MA |
| 2005-08-24 | 413-241-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MA | 4018 | SPRINGFLD | MA |
| 2005-08-24 | 413-241-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MA | 4018 | SPRINGFLD | MA |
| 2005-08-19 | 413-306-0XXX | 0000–0999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | SPRINGFLD | MA |
| 2005-08-19 | 413-306-1XXX | 1000–1999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | SPRINGFLD | MA |
| 2005-08-19 | 413-313-8XXX | 8000–8999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | HOLYOKE | MA |
| 2005-08-16 | 413-313-7XXX | 7000–7999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | HOLYOKE | MA |
| 2005-08-11 | 413-347-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MA | 4018 | PITTSFIELD | MA |
| 2005-08-08 | 413-313-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | HOLYOKE | MA |
| 2005-08-05 | 413-301-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | SPRINGFLD | MA |
| 2005-08-05 | 413-301-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | SPRINGFLD | MA |
| 2005-08-05 | 413-301-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | SPRINGFLD | MA |
| 2005-08-05 | 413-559-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | AMHRSTFKLN | MA |
| 2005-08-05 | 413-559-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | AMHRSTFKLN | MA |
| 2005-08-05 | 413-672-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | NORTHADAMS | MA |
| 2005-08-05 | 413-854-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | GREATBNGTN | MA |
| 2005-08-05 | 413-854-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | GREATBNGTN | MA |
| 2005-07-18 | 413-306-7XXX | 7000–7999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | SPRINGFLD | MA |
| 2005-07-18 | 413-306-8XXX | 8000–8999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | SPRINGFLD | MA |
| 2005-07-18 | 413-306-9XXX | 9000–9999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | SPRINGFLD | MA |
| 2005-07-18 | 413-313-9XXX | 9000–9999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | HOLYOKE | 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.