NumberResearchRecent thousands-block assignments
7 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 508
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 |
|---|---|---|---|---|---|---|---|
| 2006-04-21 | 508-306-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | HOLLISTON | MA |
| 2006-04-21 | 508-306-9XXX | 9000–9999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | HOLLISTON | MA |
| 2006-04-18 | 508-521-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BROCKTON | MA |
| 2006-04-14 | 508-202-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MA | 4018 | FRAMINGHAM | MA |
| 2006-04-14 | 508-456-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MA | 4018 | EBRIDGEWTR | MA |
| 2006-04-14 | 508-500-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MA | 4018 | MARION | MA |
| 2006-04-14 | 508-817-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MA | 4018 | NEWBEDFORD | MA |
| 2006-04-13 | 508-927-3XXX | 3000–3999 | Assigned | PAETEC ITEL, LLC | 829J | PLYMOUTH | MA |
| 2006-04-10 | 508-925-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MA | 4018 | SHREWSBURY | MA |
| 2006-04-07 | 508-567-3XXX | 3000–3999 | Assigned | COMCAST IP PHONE, LLC | 318J | FALL RIVER | MA |
| 2006-04-06 | 508-521-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | BROCKTON | MA |
| 2006-03-29 | 508-350-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | EBRIDGEWTR | MA |
| 2006-03-24 | 508-538-0XXX | 0000–0999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MARION | MA |
| 2006-03-17 | 508-425-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MA | 4018 | WORCESTER | MA |
| 2006-03-17 | 508-925-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MA | 4018 | SHREWSBURY | MA |
| 2006-03-13 | 508-210-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MA | 4018 | HOLDEN | MA |
| 2006-03-13 | 508-247-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MA | 4018 | ORLEANS | MA |
| 2006-03-13 | 508-251-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MA | 4018 | MARLBORO | MA |
| 2006-03-13 | 508-444-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MA | 4018 | FALMOUTH | MA |
| 2006-03-13 | 508-499-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MA | 4018 | OXFORD | MA |
| 2006-03-13 | 508-915-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MA | 4018 | SOUTHGATE | MA |
| 2006-03-13 | 508-923-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MA | 4018 | MIDDLEBORO | MA |
| 2006-03-07 | 508-404-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | WALPOLE | MA |
| 2006-03-07 | 508-439-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | WESTBORO | MA |
| 2006-03-07 | 508-817-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | NEWBEDFORD | MA |
| 2006-03-07 | 508-817-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | NEWBEDFORD | MA |
| 2006-03-03 | 508-441-1XXX | 1000–1999 | Assigned | METROPCS, INC. | 5562 | NEWBEDFORD | MA |
| 2006-03-03 | 508-441-2XXX | 2000–2999 | Assigned | METROPCS, INC. | 5562 | NEWBEDFORD | MA |
| 2006-02-27 | 508-657-0XXX | 0000–0999 | Assigned | COMCAST IP PHONE, LLC | 318J | BELLINGHAM | MA |
| 2006-02-27 | 508-744-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MA | 4018 | BARNSTABLE | MA |
| 2006-02-27 | 508-876-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MA | 4018 | BLACKSTONE | MA |
| 2006-02-24 | 508-304-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | WORCESTER | MA |
| 2006-02-23 | 508-917-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - MA | 4018 | MILLBURY | MA |
| 2006-02-22 | 508-510-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BROCKTON | MA |
| 2006-02-22 | 508-510-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | BROCKTON | MA |
| 2006-02-15 | 508-689-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | FALL RIVER | MA |
| 2006-02-13 | 508-658-6XXX | 6000–6999 | Assigned | PAETEC ITEL, LLC | 829J | MARLBORO | MA |
| 2006-01-19 | 508-521-6XXX | 6000–6999 | Assigned | PAETEC ITEL, LLC | 829J | BROCKTON | MA |
| 2006-01-17 | 508-217-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BRIDGEWTR | MA |
| 2006-01-16 | 508-488-8XXX | 8000–8999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | MILFORD | MA |
| 2006-01-16 | 508-514-0XXX | 0000–0999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | WELLFLEET | MA |
| 2006-01-13 | 508-857-0XXX | 0000–0999 | Assigned | COMCAST IP PHONE, LLC | 318J | BROCKTON | MA |
| 2006-01-13 | 508-857-4XXX | 4000–4999 | Assigned | COMCAST IP PHONE, LLC | 318J | BROCKTON | MA |
| 2006-01-06 | 508-244-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | MILFORD | MA |
| 2006-01-06 | 508-408-3XXX | 3000–3999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | BROCKTON | MA |
| 2006-01-06 | 508-688-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | WORCESTER | MA |
| 2006-01-06 | 508-688-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA | 6387 | WORCESTER | MA |
| 2006-01-06 | 508-825-3XXX | 3000–3999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | NANTUCKET | MA |
| 2006-01-05 | 508-202-8XXX | 8000–8999 | Assigned | OMNIPOINT MIAMI E LICENSE, LLC | 6889 | FRAMINGHAM | MA |
| 2006-01-05 | 508-381-5XXX | 5000–5999 | Assigned | PAETEC ITEL, LLC | 829J | MILFORD | 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.