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 |
|---|---|---|---|---|---|---|---|
| 2017-08-11 | 878-355-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | UNIONTOWN | PA |
| 2017-08-07 | 878-645-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | GREENSBURG | PA |
| 2017-08-04 | 878-207-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | ROCHESTER | PA |
| 2017-07-25 | 878-203-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | CHARLEROI | PA |
| 2017-07-25 | 878-205-9XXX | 9000–9999 | Assigned | TELNYX LLC | 073H | CONNELLSVL | PA |
| 2017-07-25 | 878-206-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | FAIRCHANCE | PA |
| 2017-07-25 | 878-222-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | NEWWLMNGTN | PA |
| 2017-07-25 | 878-333-2XXX | 2000–2999 | Assigned | TELNYX LLC | 073H | ELLWOOD CY | PA |
| 2017-07-25 | 878-378-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | WESTNEWTON | PA |
| 2017-07-25 | 878-444-9XXX | 9000–9999 | Assigned | TELNYX LLC | 073H | HOMER CITY | PA |
| 2017-07-25 | 878-777-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | DERRY | PA |
| 2017-07-24 | 878-670-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | PTTSBGZON1 | PA |
| 2017-06-29 | 878-313-5XXX | 5000–5999 | Assigned | ONVOY, LLC - PA | 547E | ROCHESTER | PA |
| 2017-06-21 | 878-207-4XXX | 4000–4999 | Assigned | TELNYX LLC | 073H | ROCHESTER | PA |
| 2017-06-20 | 878-228-6XXX | 6000–6999 | Assigned | TELNYX LLC | 073H | UNIONTOWN | PA |
| 2017-06-19 | 878-207-3XXX | 3000–3999 | Assigned | IP HORIZON LLC | 515J | ROCHESTER | PA |
| 2017-06-19 | 878-333-8XXX | 8000–8999 | Assigned | IP HORIZON LLC | 515J | ELLWOOD CY | PA |
| 2017-06-12 | 878-207-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | ROCHESTER | PA |
| 2017-06-12 | 878-218-6XXX | 6000–6999 | Assigned | TELNYX LLC | 073H | WASHINGTON | PA |
| 2017-06-02 | 878-355-7XXX | 7000–7999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | UNIONTOWN | PA |
| 2017-06-02 | 878-355-8XXX | 8000–8999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | UNIONTOWN | PA |
| 2017-06-02 | 878-355-9XXX | 9000–9999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | UNIONTOWN | PA |
| 2017-05-31 | 878-228-5XXX | 5000–5999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | UNIONTOWN | PA |
| 2017-05-24 | 878-210-9XXX | 9000–9999 | Assigned | WINDSTREAM PENNSYLVANIA, INC. | 0176 | MIDWAY | PA |
| 2017-05-11 | 878-670-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | PTTSBGZON1 | PA |
| 2017-05-01 | 878-379-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | WAYNESBURG | PA |
| 2017-03-30 | 878-218-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | WASHINGTON | PA |
| 2017-02-14 | 878-999-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | PTTSBGZON1 | PA |
| 2017-02-14 | 878-999-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | PTTSBGZON1 | PA |
| 2017-02-14 | 878-999-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | PTTSBGZON1 | PA |
| 2017-02-03 | 878-668-0XXX | 0000–0999 | Assigned | HD CARRIER LLC | 321J | ENONVALLEY | PA |
| 2017-01-31 | 878-207-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | ROCHESTER | PA |
| 2017-01-27 | 878-271-6XXX | 6000–6999 | Assigned | PAETEC ITEL, LLC | 829J | BUTLER | PA |
| 2016-12-30 | 878-847-2XXX | 2000–2999 | Assigned | PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA | 967E | NEWKNSNGTN | PA |
| 2016-12-20 | 878-847-5XXX | 5000–5999 | Assigned | COMCAST IP PHONE, LLC | 318J | NEWKNSNGTN | PA |
| 2016-12-06 | 878-847-7XXX | 7000–7999 | Assigned | COMCAST IP PHONE, LLC | 318J | NEWKNSNGTN | PA |
| 2016-11-10 | 878-271-1XXX | 1000–1999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | BUTLER | PA |
| 2016-11-03 | 878-332-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WEXFORD | PA |
| 2016-10-31 | 878-847-8XXX | 8000–8999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | NEWKNSNGTN | PA |
| 2016-10-20 | 878-645-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | GREENSBURG | PA |
| 2016-09-28 | 878-847-9XXX | 9000–9999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | NEWKNSNGTN | PA |
| 2016-09-22 | 878-645-6XXX | 6000–6999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | GREENSBURG | PA |
| 2016-09-21 | 878-313-6XXX | 6000–6999 | Assigned | PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA | 967E | ROCHESTER | PA |
| 2016-09-06 | 878-205-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | CONNELLSVL | PA |
| 2016-09-06 | 878-218-4XXX | 4000–4999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | WASHINGTON | PA |
| 2016-09-06 | 878-645-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | GREENSBURG | PA |
| 2016-08-08 | 878-333-9XXX | 9000–9999 | Assigned | PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA | 967E | ELLWOOD CY | PA |
| 2016-07-12 | 878-218-1XXX | 1000–1999 | Assigned | COMCAST IP PHONE, LLC | 318J | WASHINGTON | PA |
| 2016-07-06 | 878-208-9XXX | 9000–9999 | Assigned | PAETEC ITEL, LLC | 829J | CRIDERSCOR | PA |
| 2016-06-23 | 878-295-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - PA | 002F | GREENSBURG | 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.