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
2022-11-03	878-898	7XXX8XXX9XXX which blocks →	ONVOY, LLC - PA	547E	COOPERSTWN	PA
2022-09-14	878-867	0–9 XXXall 10 · 4 holders which blocks →	COMMIO, LLC	939H	NEWKNSNGTN	PA
2022-09-02	878-262	0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	ONVOY, LLC - PA	547E	MARS	PA
2022-08-08	878-261	2XXX6XXX7XXX8XXX · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - PA	4007	FREEPORT	PA
2022-07-25	878-254	0–9 XXXwhole prefix which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	PTTSBGZON1	PA
2022-07-21	878-553	0–9 XXXwhole prefix which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	PTTSBGZON1	PA
2022-06-07	878-260	0XXX2XXX3XXX · 3 holders which blocks →	COMCAST IP PHONE, LLC	318J	CURTISVL	PA
2022-05-18	878-256	0–9 XXXall 10 · 3 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - PA	7315	PTTSBGZON1	PA
2022-05-06	878-268	0XXX1XXX2XXX3XXX4XXX5XXX6XXX9XXX · 4 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - PA	7315	IMPERIAL	PA
2022-04-14	878-250	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	CRIDERSCOR	PA
2022-02-24	878-335	0XXX1XXX3XXX · 3 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	LOWELLVL	PA
2022-02-24	878-736	0XXX1XXX3XXX · 3 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	MARCHAND	PA
2022-02-24	878-782	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	HOOKSTOWN	PA
2022-02-22	878-248	1XXX2XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks →	PAETEC ITEL, LLC	829J	GIBSONIA	PA
2022-02-18	878-784	0XXX6XXX · 2 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	EPALESTINE	PA
2022-02-14	878-673	0XXX2XXX3XXX8XXX9XXX · 4 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	DERRY	PA
2022-02-11	878-265	0XXX1XXX2XXX7XXX8XXX9XXX · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - PA	002F	CALIFORNIA	PA
2022-01-20	878-732	0–9 XXXall 10 · 3 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	PTGSBNZN19	PA
2022-01-10	878-626	0–9 XXXall 10 · 4 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	PTTSBGZON7	PA
2022-01-10	878-723	0–9 XXXall 10 · 4 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	PTTSBGZON3	PA
2022-01-10	878-786	0–9 XXXall 10 · 5 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	GREENSBURG	PA
2022-01-10	878-834	0–9 XXXall 10 · 5 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	PTTSBGZON8	PA
2022-01-08	878-253	0XXX1XXX6XXX7XXX8XXX · 4 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	MONESSEN	PA
2022-01-08	878-433	0XXX1XXX2XXX6XXX8XXX · 4 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	CLAIRTON	PA
2021-12-15	878-249	4XXX8XXX9XXX · 2 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	LEECHBURG	PA
2021-12-14	878-245	0–9 XXXall 10 · 3 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	BEAVER FLS	PA
2021-12-14	878-247	0–9 XXXall 10 · 4 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	BELLEVRNON	PA
2021-12-10	878-300	0XXX1XXX3XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	BOOST SUBSCRIBERCO L.L.C.	490J	NEW CASTLE	PA
2021-11-05	878-246	3XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	COMCAST IP PHONE, LLC	318J	CLAYSVILLE	PA
2021-10-25	878-239	0XXX1XXX2XXX3XXX6XXX8XXX9XXX · 4 holders which blocks →	COMCAST IP PHONE, LLC	318J	ZELIENOPLE	PA
2021-10-25	878-336	0–9 XXXall 10 · 7 holders which blocks →	FRACTEL, LLC	965H	PTTSBGZON6	PA
2021-10-25	878-465	0–9 XXXall 10 · 5 holders which blocks →	FRACTEL, LLC	965H	WEXFORD	PA
2021-10-11	878-242	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - PA	002F	NEW CASTLE	PA
2021-10-01	878-259	0XXX1XXX2XXX3XXX8XXX9XXX · 4 holders which blocks →	COMMIO, LLC	939H	EXPORT	PA
2021-09-20	878-822	0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 5 holders which blocks →	SKYE TELECOM LLC DBA SKYETEL	622J	BUTLER	PA
2021-09-08	878-529	0XXX3XXX7XXX8XXX9XXX · 3 holders which blocks →	FRACTEL, LLC	965H	BROWNSVL	PA
2021-08-18	878-356	0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	FRACTEL, LLC	965H	WESTNEWTON	PA
2021-07-22	878-345	1XXX2XXX3XXX4XXX5XXX6XXX · 5 holders which blocks →	FRACTEL, LLC	965H	PTGSBNZN20	PA
2021-07-22	878-978	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - PA	547E	PTTSBGZON1	PA
2021-07-21	878-241	0XXX3XXX4XXX8XXX9XXX · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - PA	002F	SMITHSFRRY	PA
2021-06-10	878-240	0–9 XXXall 10 · 4 holders which blocks →	VONAGE AMERICA LLC	197D	CONNELLSVL	PA
2021-06-09	878-322	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	DONORA	PA
2021-05-26	878-237	0–9 XXXall 10 · 5 holders which blocks →	STRATUS NETWORKS	495J	BEAVER FLS	PA
2021-05-13	878-244	0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 6 holders which blocks →	METROPCS, INC.	5562	SLIPPERYRK	PA
2021-04-27	878-230	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks →	HD CARRIER LLC	321J	PTTSBGZON4	PA
2021-04-22	878-255	0–9 XXXall 10 · 3 holders which blocks →	ONVOY SPECTRUM, LLC	624H	ALIQUIPPA	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
2021-04-16	878-844	0–9 XXXall 10 · 7 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	INDIANA	PA
2021-04-15	878-236	0–9 XXXall 10 · 3 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	CRIDERSCOR	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.