Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.

Most active assignees, all time — NPA 878

ONVOY, LLC - PA 51

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

Recent NPA-NXX prefix assignments
Assigned	NPA-NXX	Thousands-blocks taken (last-4 opening)	Code holder	OCN	Rate center	State
2026-04-14	878-307	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - PA	547E	ROCHESTER	PA
2026-03-18	878-306	0XXX which blocks →	ONVOY, LLC - PA	547E	UNIONTOWN	PA
2026-02-26	878-305	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC - PA	547E	ALIQUIPPA	PA
2026-01-05	878-303	0XXX1XXX8XXX which blocks →	ONVOY, LLC - PA	547E	BEAVER FLS	PA
2025-11-20	878-298	0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	ONVOY, LLC - PA	547E	GREENSBURG	PA
2025-11-20	878-299	0XXX1XXX2XXX3XXX7XXX8XXX9XXX · 2 holders which blocks →	ONVOY, LLC - PA	547E	INDIANA	PA
2023-09-12	878-281	0XXX1XXX2XXX · 2 holders which blocks →	ONVOY, LLC - PA	547E	FINLEYVL	PA
2023-09-12	878-282	0XXX2XXX · 2 holders which blocks →	ONVOY, LLC - PA	547E	REPUBLIC	PA
2023-09-12	878-283	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - PA	547E	UNIONTOWN	PA
2023-09-12	878-284	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - PA	547E	ROCHESTER	PA
2023-09-12	878-286	0XXX1XXX2XXX9XXX which blocks →	ONVOY, LLC - PA	547E	JEANNETTE	PA
2023-09-12	878-287	0XXX1XXX2XXX7XXX9XXX · 2 holders which blocks →	ONVOY, LLC - PA	547E	EVANS CITY	PA
2022-11-03	878-898	7XXX8XXX9XXX which blocks →	ONVOY, LLC - PA	547E	COOPERSTWN	PA
2022-09-02	878-262	0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	ONVOY, LLC - PA	547E	MARS	PA
2021-07-22	878-978	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - PA	547E	PTTSBGZON1	PA
2021-04-22	878-277	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - PA	547E	BLAIRSVL	PA
2021-04-22	878-477	0XXX1XXX2XXX3XXX7XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC - PA	547E	CHARLEROI	PA
2021-01-28	878-226	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - PA	547E	WASHINGTON	PA
2021-01-28	878-232	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - PA	547E	ELLWOOD CY	PA
2020-12-18	878-884	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - PA	547E	GREENSBURG	PA
2020-10-08	878-887	3XXX7XXX8XXX · 2 holders which blocks →	ONVOY, LLC - PA	547E	PARIS	PA
2020-10-01	878-278	2XXX3XXX7XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC - PA	547E	DARLINGTON	PA
2020-07-27	878-251	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC - PA	547E	BLACK LICK	PA
2020-07-23	878-881	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - PA	547E	BROWNSVL	PA
2020-06-16	878-231	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - PA	547E	WEXFORD	PA
2020-05-14	878-880	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - PA	547E	WASHINGTON	PA
2020-02-11	878-768	2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks →	ONVOY, LLC - PA	547E	VOLANT	PA
2020-02-07	878-778	2XXX3XXX4XXX6XXX7XXX8XXX · 2 holders which blocks →	ONVOY, LLC - PA	547E	BLACKTOWN	PA
2020-02-07	878-788	2XXX3XXX4XXX7XXX8XXX · 2 holders which blocks →	ONVOY, LLC - PA	547E	FOXBURG	PA
2020-02-07	878-789	2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks →	ONVOY, LLC - PA	547E	PETROLIA	PA
2020-01-24	878-877	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - PA	547E	BUTLER	PA
2019-08-19	878-879	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - PA	547E	NEWKNSNGTN	PA
2019-06-12	878-728	0XXX1XXX2XXX4XXX7XXX8XXX9XXX · 2 holders which blocks →	ONVOY, LLC - PA	547E	GIBSONIA	PA
2018-12-10	878-225	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - PA	547E	ELLWOOD CY	PA
2018-12-10	878-257	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	ONVOY, LLC - PA	547E	TAYLORSTN	PA
2018-08-22	878-216	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - PA	547E	REPUBLIC	PA
2016-03-24	878-378	0XXX1XXX2XXX3XXX4XXX6XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC - PA	547E	WESTNEWTON	PA
2016-03-24	878-847	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - PA	547E	NEWKNSNGTN	PA
2016-03-24	878-870	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - PA	547E	FARMINGTON	PA
2016-03-21	878-206	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - PA	547E	FAIRCHANCE	PA
2016-01-08	878-205	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - PA	547E	CONNELLSVL	PA
2015-09-15	878-999	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - PA	547E	PTTSBGZON1	PA
—	878-222	0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	ONVOY, LLC - PA	547E	NEWWLMNGTN	PA
—	878-269	0XXX1XXX4XXX5XXX · 3 holders which blocks →	ONVOY, LLC - PA	547E	PARKWOOD	PA
—	878-333	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - PA	547E	ELLWOOD CY	PA
—	878-400	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks →	ONVOY, LLC - PA	547E	WAMPUM	PA
—	878-444	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - PA	547E	HOMER CITY	PA
—	878-666	0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC - PA	547E	MARION CTR	PA
—	878-777	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - PA	547E	DERRY	PA
—	878-888	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - PA	547E	PARKWOOD	PA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.