NumberResearchRecent thousands-block assignments
18 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026
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 |
|---|---|---|---|---|---|---|---|
| 2016-03-02 | 878-222-4XXX | 4000–4999 | Assigned | ONVOY, LLC - PA | 547E | NEWWLMNGTN | PA |
| 2016-03-02 | 878-333-0XXX | 0000–0999 | Assigned | ONVOY, LLC - PA | 547E | ELLWOOD CY | PA |
| 2016-03-02 | 878-333-1XXX | 1000–1999 | Assigned | ONVOY, LLC - PA | 547E | ELLWOOD CY | PA |
| 2016-02-22 | 878-999-0XXX | 0000–0999 | Assigned | NUSO, LLC | 551G | PTTSBGZON1 | PA |
| 2016-02-17 | 878-999-1XXX | 1000–1999 | Assigned | ONVOY, LLC - PA | 547E | PTTSBGZON1 | PA |
| 2016-02-12 | 878-238-1XXX | 1000–1999 | Assigned | LAUREL HIGHLAND TELEPHONE COMPANY - PA | 738H | LIGONIER | PA |
| 2016-02-04 | 878-425-0XXX | 0000–0999 | Assigned | ARMSTRONG TELECOMMUNICATIONS, INC. - PA | 422C | SAXONBURG | PA |
| 2016-01-15 | 878-645-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | GREENSBURG | PA |
| 2016-01-11 | 878-205-0XXX | 0000–0999 | Assigned | ONVOY, LLC - PA | 547E | CONNELLSVL | PA |
| 2015-12-29 | 878-201-5XXX | 5000–5999 | Assigned | ONVOY, LLC - PA | 547E | ROCHESTER | PA |
| 2015-12-08 | 878-999-7XXX | 7000–7999 | Assigned | ONVOY, LLC - PA | 547E | PTTSBGZON1 | PA |
| 2015-12-08 | 878-999-8XXX | 8000–8999 | Assigned | ONVOY, LLC - PA | 547E | PTTSBGZON1 | PA |
| 2015-12-07 | 878-208-2XXX | 2000–2999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | CRIDERSCOR | PA |
| 2015-12-01 | 878-999-2XXX | 2000–2999 | Assigned | COMCAST IP PHONE, LLC | 318J | PTTSBGZON1 | PA |
| 2015-11-25 | 878-228-0XXX | 0000–0999 | Assigned | AERIAL COMMUNICATIONS, INC. | 6701 | UNIONTOWN | PA |
| 2015-11-04 | 878-332-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | WEXFORD | PA |
| 2015-10-30 | 878-228-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | UNIONTOWN | PA |
| 2015-10-30 | 878-295-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GREENSBURG | PA |
| 2015-10-05 | 878-313-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | ROCHESTER | PA |
| 2015-09-30 | 878-228-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | UNIONTOWN | PA |
| 2015-09-21 | 878-999-9XXX | 9000–9999 | Assigned | ONVOY, LLC - PA | 547E | PTTSBGZON1 | PA |
| 2015-09-08 | 878-218-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | WASHINGTON | PA |
| 2015-09-08 | 878-218-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | WASHINGTON | PA |
| 2015-09-03 | 878-208-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - PA | 4007 | CRIDERSCOR | PA |
| 2015-08-11 | 878-228-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | UNIONTOWN | PA |
| 2015-08-11 | 878-295-8XXX | 8000–8999 | Assigned | COMCAST IP PHONE, LLC | 318J | GREENSBURG | PA |
| 2015-08-11 | 878-332-1XXX | 1000–1999 | Assigned | PAETEC ITEL, LLC | 829J | WEXFORD | PA |
| 2015-08-03 | 878-295-5XXX | 5000–5999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GREENSBURG | PA |
| 2015-08-03 | 878-295-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GREENSBURG | PA |
| 2015-07-27 | 878-888-0XXX | 0000–0999 | Assigned | ONVOY, LLC - PA | 547E | PARKWOOD | PA |
| 2015-07-23 | 878-203-9XXX | 9000–9999 | Assigned | ONVOY, LLC - PA | 547E | CHARLEROI | PA |
| 2015-07-23 | 878-444-5XXX | 5000–5999 | Assigned | ONVOY, LLC - PA | 547E | HOMER CITY | PA |
| 2015-07-14 | 878-333-4XXX | 4000–4999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | ELLWOOD CY | PA |
| 2015-07-13 | 878-218-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | WASHINGTON | PA |
| 2015-07-09 | 878-313-3XXX | 3000–3999 | Assigned | COMCAST IP PHONE, LLC | 318J | ROCHESTER | PA |
| 2015-06-30 | 878-266-9XXX | 9000–9999 | Assigned | WINDSTREAM PENNSYLVANIA, INC. | 0176 | ELDERTON | PA |
| 2015-06-30 | 878-333-3XXX | 3000–3999 | Assigned | ONVOY, LLC - PA | 547E | ELLWOOD CY | PA |
| 2015-06-02 | 878-295-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA | 6392 | GREENSBURG | PA |
| 2015-05-28 | 878-422-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | KITTANNING | PA |
| 2015-05-26 | 878-203-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | CHARLEROI | PA |
| 2015-05-19 | 878-228-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | UNIONTOWN | PA |
| 2015-05-19 | 878-302-6XXX | 6000–6999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | NEWKNSNGTN | PA |
| 2015-05-19 | 878-444-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | HOMER CITY | PA |
| 2015-05-19 | 878-888-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | PARKWOOD | PA |
| 2015-05-18 | 878-313-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | ROCHESTER | PA |
| 2015-05-18 | 878-777-6XXX | 6000–6999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | DERRY | PA |
| 2015-05-15 | 878-222-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | NEWWLMNGTN | PA |
| 2015-04-24 | 878-204-9XXX | 9000–9999 | Assigned | WINDSTREAM PENNSYLVANIA, INC. | 0176 | SHEAKLEYVL | PA |
| 2015-04-24 | 878-668-9XXX | 9000–9999 | Assigned | WINDSTREAM PENNSYLVANIA, INC. | 0176 | ENONVALLEY | PA |
| 2015-04-16 | 878-313-2XXX | 2000–2999 | Assigned | ONVOY, LLC - PA | 547E | ROCHESTER | PA |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.