NumberResearchRecent thousands-block assignments
18 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 878
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 |
|---|---|---|---|---|---|---|---|
| 2015-04-07 | 878-313-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | ROCHESTER | PA |
| 2015-03-02 | 878-228-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | UNIONTOWN | PA |
| 2015-03-02 | 878-313-9XXX | 9000–9999 | Assigned | IP HORIZON LLC | 515J | ROCHESTER | PA |
| 2015-02-12 | 878-218-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | WASHINGTON | PA |
| 2015-01-09 | 878-313-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | ROCHESTER | PA |
| 2015-01-06 | 878-302-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | NEWKNSNGTN | PA |
| 2014-12-19 | 878-201-6XXX | 6000–6999 | Assigned | ONVOY, LLC - PA | 547E | ROCHESTER | PA |
| 2014-12-19 | 878-201-9XXX | 9000–9999 | Assigned | ONVOY, LLC - PA | 547E | ROCHESTER | PA |
| 2014-12-05 | 878-295-4XXX | 4000–4999 | Assigned | ONVOY, LLC - PA | 547E | GREENSBURG | PA |
| 2014-11-10 | 878-271-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | BUTLER | PA |
| 2014-09-10 | 878-777-4XXX | 4000–4999 | Assigned | ONVOY, LLC - PA | 547E | DERRY | PA |
| 2014-09-10 | 878-777-5XXX | 5000–5999 | Assigned | ONVOY, LLC - PA | 547E | DERRY | PA |
| 2014-09-09 | 878-302-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | NEWKNSNGTN | PA |
| 2014-08-19 | 878-302-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | NEWKNSNGTN | PA |
| 2014-08-07 | 878-201-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | ROCHESTER | PA |
| 2014-08-07 | 878-295-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | GREENSBURG | PA |
| 2014-08-07 | 878-295-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | GREENSBURG | PA |
| 2014-06-20 | 878-302-0XXX | 0000–0999 | Assigned | ONVOY, LLC - PA | 547E | NEWKNSNGTN | PA |
| 2014-05-07 | 878-222-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - PA | 002F | NEWWLMNGTN | PA |
| 2014-05-07 | 878-444-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - PA | 002F | HOMER CITY | PA |
| 2014-04-02 | 878-258-0XXX | 0000–0999 | Assigned | SALSGIVER TELECOM, INC. - PA | 103F | FREEPORT | PA |
| 2014-04-02 | 878-295-9XXX | 9000–9999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | GREENSBURG | PA |
| 2014-04-02 | 878-422-0XXX | 0000–0999 | Assigned | SALSGIVER TELECOM, INC. - PA | 103F | KITTANNING | PA |
| 2014-03-14 | 878-332-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - PA | 7315 | WEXFORD | PA |
| 2014-03-10 | 878-201-4XXX | 4000–4999 | Assigned | BANDWIDTH.COM CLEC, LLC - PA | 002F | ROCHESTER | PA |
| 2014-02-06 | 878-332-4XXX | 4000–4999 | Assigned | CONSOLIDATED COMMUNICATIONS OF PENNSYLVANIA CO | 0193 | WEXFORD | PA |
| 2014-01-29 | 878-332-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | WEXFORD | PA |
| 2014-01-07 | 878-201-3XXX | 3000–3999 | Assigned | COMCAST IP PHONE, LLC | 318J | ROCHESTER | PA |
| 2013-10-31 | 878-201-7XXX | 7000–7999 | Assigned | METROPCS, INC. | 5562 | ROCHESTER | PA |
| 2013-10-28 | 878-302-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | NEWKNSNGTN | PA |
| 2013-10-24 | 878-777-3XXX | 3000–3999 | Assigned | ONVOY, LLC - PA | 547E | DERRY | PA |
| 2013-10-22 | 878-201-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | ROCHESTER | PA |
| 2013-10-08 | 878-302-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | NEWKNSNGTN | PA |
| 2013-09-20 | 878-302-3XXX | 3000–3999 | Assigned | COMCAST IP PHONE, LLC | 318J | NEWKNSNGTN | PA |
| 2013-08-13 | 878-444-4XXX | 4000–4999 | Assigned | ONVOY, LLC - PA | 547E | HOMER CITY | PA |
| 2013-07-12 | 878-222-2XXX | 2000–2999 | Assigned | ONVOY, LLC - PA | 547E | NEWWLMNGTN | PA |
| 2013-06-06 | 878-202-4XXX | 4000–4999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | SHARON | PA |
| 2013-05-13 | 878-777-7XXX | 7000–7999 | Assigned | ONVOY, LLC - PA | 547E | DERRY | PA |
| 2013-04-25 | 878-888-8XXX | 8000–8999 | Assigned | ONVOY, LLC - PA | 547E | PARKWOOD | PA |
| 2013-04-19 | 878-201-0XXX | 0000–0999 | Assigned | PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA | 967E | ROCHESTER | PA |
| 2013-04-19 | 878-201-1XXX | 1000–1999 | Assigned | PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA | 967E | ROCHESTER | PA |
| 2013-04-19 | 878-302-1XXX | 1000–1999 | Assigned | PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA | 967E | NEWKNSNGTN | PA |
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.