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

TON80 COMMUNICATIONS, LLC 19

ONVOY SPECTRUM, LLC 14

AERIAL COMMUNICATIONS, INC. 14

FRACTEL, LLC 11

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
2017-05-23	878-210	0XXX9XXX · 2 holders which blocks →	WINDSTREAM PENNSYLVANIA, INC.	0176	MIDWAY	PA
2017-05-09	878-670	0–9 XXXall 10 · 3 holders which blocks →	COMMIO, LLC	939H	PTTSBGZON1	PA
2017-04-26	878-379	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA	6392	WAYNESBURG	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
2016-02-11	878-238	0–9 XXXall 10 · 4 holders which blocks →	LAUREL HIGHLAND TELEPHONE COMPANY - PA	738H	LIGONIER	PA
2016-02-03	878-425	0–9 XXXall 10 · 5 holders which blocks →	ARMSTRONG TELECOMMUNICATIONS, INC. - PA	422C	SAXONBURG	PA
2016-01-15	878-645	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA	6392	GREENSBURG	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
2015-08-11	878-208	0–9 XXXall 10 · 6 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	CRIDERSCOR	PA
2015-06-29	878-266	0XXX2XXX3XXX6XXX9XXX · 4 holders which blocks →	WINDSTREAM PENNSYLVANIA, INC.	0176	ELDERTON	PA
2015-05-21	878-203	0–9 XXXall 10 · 6 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	CHARLEROI	PA
2015-04-22	878-204	2XXX7XXX8XXX9XXX · 2 holders which blocks →	WINDSTREAM PENNSYLVANIA, INC.	0176	SHEAKLEYVL	PA
2015-04-22	878-668	0–9 XXXall 10 · 2 holders which blocks →	WINDSTREAM PENNSYLVANIA, INC.	0176	ENONVALLEY	PA
2015-02-12	878-218	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA	6392	WASHINGTON	PA
2015-01-09	878-313	0–9 XXXall 10 · 7 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA	6392	ROCHESTER	PA
2014-11-07	878-271	0XXX1XXX3XXX4XXX6XXX7XXX · 5 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	BUTLER	PA
2014-04-01	878-258	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	SALSGIVER TELECOM, INC. - PA	103F	FREEPORT	PA
2014-04-01	878-295	0–9 XXXall 10 · 6 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	GREENSBURG	PA
2014-04-01	878-422	0XXX2XXX3XXX4XXX7XXX9XXX · 6 holders which blocks →	SALSGIVER TELECOM, INC. - PA	103F	KITTANNING	PA
2014-01-28	878-332	0–9 XXXall 10 · 8 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - PA	4007	WEXFORD	PA
2013-05-31	878-202	0–9 XXXall 10 · 3 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	SHARON	PA
2013-04-17	878-201	0–9 XXXall 10 · 6 holders which blocks →	PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA	967E	ROCHESTER	PA
2013-04-17	878-302	0–9 XXXall 10 · 6 holders which blocks →	PEERLESS NETWORK OF PENNSYLVANIA, LLC - PA	967E	NEWKNSNGTN	PA
—	878-207	0–9 XXXall 10 · 6 holders which blocks →	COMCAST IP PHONE, LLC	318J	ROCHESTER	PA
—	878-211	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	PA
—	878-222	0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	ONVOY, LLC - PA	547E	NEWWLMNGTN	PA
—	878-228	0–9 XXXall 10 · 6 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	UNIONTOWN	PA
—	878-269	0XXX1XXX4XXX5XXX · 3 holders which blocks →	ONVOY, LLC - PA	547E	PARKWOOD	PA
—	878-288	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	BOLIVAR	PA
—	878-311	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	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
—	878-411	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	PA
—	878-444	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - PA	547E	HOMER CITY	PA
—	878-500	0XXX5XXX which blocks →	FRACTEL, LLC	965H	FORD CITY	PA
—	878-511	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	PA
—	878-555	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	DIR ASST	PA
—	878-611	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	PA
—	878-666	0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC - PA	547E	MARION CTR	PA
—	878-700	not yet reported which blocks →				PA
—	878-711	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	PA
—	878-777	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - PA	547E	DERRY	PA
—	878-811	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	PA
—	878-888	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - PA	547E	PARKWOOD	PA
—	878-900	0XXX1XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC - PA	547E	EPALESTINE	PA
—	878-911	not yet reported which blocks →	MULTIPLE OCN LISTING	MULT	XXXXXXXXXX	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.