NumberResearchRecent thousands-block assignments
4 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026
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 315
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 |
|---|---|---|---|---|---|---|---|
| 2013-02-20 | 315-257-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | SENECA FLS | NY |
| 2013-02-20 | 315-660-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | WOLCOTT | NY |
| 2013-02-20 | 315-714-6XXX | 6000–6999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | CANTON | NY |
| 2013-02-20 | 315-904-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | WILLIAMSON | NY |
| 2013-02-20 | 315-923-4XXX | 4000–4999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | CLYDE | NY |
| 2013-01-29 | 315-237-3XXX | 3000–3999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | AUBURN | NY |
| 2013-01-29 | 315-766-0XXX | 0000–0999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | SYRACUSE | NY |
| 2013-01-23 | 315-444-6XXX | 6000–6999 | Assigned | TC SYSTEMS, INC. - NY | 7140 | ILION | NY |
| 2013-01-23 | 315-676-6XXX | 6000–6999 | Assigned | TC SYSTEMS, INC. - NY | 7140 | CENTRAL SQ | NY |
| 2013-01-22 | 315-887-6XXX | 6000–6999 | Assigned | TC SYSTEMS, INC. - NY | 7140 | FULTON | NY |
| 2013-01-02 | 315-418-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | SYRACUSE | NY |
| 2013-01-02 | 315-418-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | SYRACUSE | NY |
| 2013-01-02 | 315-726-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | SYRACUSE | NY |
| 2012-12-31 | 315-217-6XXX | 6000–6999 | Assigned | ONVOY, LLC- NY | 384C | SKANEATLES | NY |
| 2012-12-31 | 315-257-1XXX | 1000–1999 | Assigned | ONVOY, LLC- NY | 384C | SENECA FLS | NY |
| 2012-12-31 | 315-496-3XXX | 3000–3999 | Assigned | ONVOY, LLC- NY | 384C | SEMPRONIUS | NY |
| 2012-12-31 | 315-670-3XXX | 3000–3999 | Assigned | ONVOY, LLC- NY | 384C | WATERLOO | NY |
| 2012-12-31 | 315-758-2XXX | 2000–2999 | Assigned | ONVOY, LLC- NY | 384C | WEEDSPORT | NY |
| 2012-12-31 | 315-810-1XXX | 1000–1999 | Assigned | ONVOY, LLC- NY | 384C | TULLY | NY |
| 2012-12-26 | 315-563-2XXX | 2000–2999 | Assigned | ONVOY, LLC- NY | 384C | POPLAR RDG | NY |
| 2012-12-26 | 315-784-2XXX | 2000–2999 | Assigned | ONVOY, LLC- NY | 384C | OWASCO | NY |
| 2012-12-21 | 315-503-6XXX | 6000–6999 | Assigned | ONVOY, LLC- NY | 384C | MINOA | NY |
| 2012-12-21 | 315-605-7XXX | 7000–7999 | Assigned | ONVOY, LLC- NY | 384C | OGDENSBURG | NY |
| 2012-12-21 | 315-757-1XXX | 1000–1999 | Assigned | ONVOY, LLC- NY | 384C | MORAVIA | NY |
| 2012-12-21 | 315-791-1XXX | 1000–1999 | Assigned | ONVOY, LLC- NY | 384C | ONTARIO | NY |
| 2012-12-20 | 315-417-1XXX | 1000–1999 | Assigned | ONVOY, LLC- NY | 384C | ILION | NY |
| 2012-12-20 | 315-504-2XXX | 2000–2999 | Assigned | ONVOY, LLC- NY | 384C | LAFAYETTE | NY |
| 2012-12-20 | 315-514-6XXX | 6000–6999 | Assigned | ONVOY, LLC- NY | 384C | MASSENA | NY |
| 2012-12-20 | 315-556-8XXX | 8000–8999 | Assigned | ONVOY, LLC- NY | 384C | LITTLE FLS | NY |
| 2012-12-20 | 315-665-3XXX | 3000–3999 | Assigned | ONVOY, LLC- NY | 384C | LYONS | NY |
| 2012-12-20 | 315-908-0XXX | 0000–0999 | Assigned | ONVOY, LLC- NY | 384C | MEXICO | NY |
| 2012-12-19 | 315-228-1XXX | 1000–1999 | Assigned | ONVOY, LLC- NY | 384C | HAMILTON | NY |
| 2012-12-19 | 315-325-2XXX | 2000–2999 | Assigned | ONVOY, LLC- NY | 384C | GENEVA | NY |
| 2012-12-19 | 315-400-6XXX | 6000–6999 | Assigned | ONVOY, LLC- NY | 384C | FAYETTEVL | NY |
| 2012-12-19 | 315-522-0XXX | 0000–0999 | Assigned | ONVOY, LLC- NY | 384C | GOUVERNEUR | NY |
| 2012-12-19 | 315-818-2XXX | 2000–2999 | Assigned | ONVOY, LLC- NY | 384C | EVANSMILLS | NY |
| 2012-12-19 | 315-951-3XXX | 3000–3999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | CANASTOTA | NY |
| 2012-12-18 | 315-613-3XXX | 3000–3999 | Assigned | ONVOY, LLC- NY | 384C | DOLGEVILLE | NY |
| 2012-12-18 | 315-623-1XXX | 1000–1999 | Assigned | ONVOY, LLC- NY | 384C | CONSTANTIA | NY |
| 2012-12-17 | 315-285-7XXX | 7000–7999 | Assigned | ONVOY, LLC- NY | 384C | CLAYTON | NY |
| 2012-12-17 | 315-505-2XXX | 2000–2999 | Assigned | ONVOY, LLC- NY | 384C | CICERO | NY |
| 2012-12-17 | 315-544-2XXX | 2000–2999 | Assigned | ONVOY, LLC- NY | 384C | CARTHAGE | NY |
| 2012-12-17 | 315-666-1XXX | 1000–1999 | Assigned | ONVOY, LLC- NY | 384C | CHITTENNGO | NY |
| 2012-12-17 | 315-710-3XXX | 3000–3999 | Assigned | ONVOY, LLC- NY | 384C | BRIDGEPORT | NY |
| 2012-12-17 | 315-714-5XXX | 5000–5999 | Assigned | ONVOY, LLC- NY | 384C | CANTON | NY |
| 2012-12-17 | 315-859-6XXX | 6000–6999 | Assigned | ONVOY, LLC- NY | 384C | CLINTON | NY |
| 2012-12-17 | 315-902-0XXX | 0000–0999 | Assigned | ONVOY, LLC- NY | 384C | CLYDE | NY |
| 2012-12-17 | 315-999-1XXX | 1000–1999 | Assigned | ONVOY, LLC- NY | 384C | CLEVELAND | NY |
| 2012-12-10 | 315-820-6XXX | 6000–6999 | Assigned | PAETEC ITEL, LLC | 829J | CAMDEN | NY |
| 2012-12-05 | 315-236-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY | 6959 | OSWEGO | NY |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.