Recent prefix assignments

3 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, last 30 days — NPA 582

U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 1

NEW CINGULAR WIRELESS PCS, LLC - DC 1

MCIMETRO ACCESS TRANSMISSION SERVICES LLC 1

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
2023-09-01	582-253	0XXX1XXX2XXX3XXX4XXX which blocks →	COMMIO, LLC	939H	GALETON	PA
2023-08-17	582-246	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	BOALSBURG	PA
2023-08-17	582-248	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	REYNOLDSVL	PA
2023-08-11	582-280	0XXX1XXX2XXX · 3 holders which blocks →	TWILIO INTERNATIONAL, INC.	506J	WESLEY	PA
2023-08-11	582-522	0XXX2XXX7XXX · 3 holders which blocks →	ONVOY SPECTRUM, LLC	624H	CAMBDG SPG	PA
2023-08-11	582-588	0XXX3XXX8XXX · 3 holders which blocks →	ONVOY SPECTRUM, LLC	624H	FAIRVIEW	PA
2023-08-11	582-833	0XXX3XXX7XXX · 3 holders which blocks →	ONVOY SPECTRUM, LLC	624H	UNION CITY	PA
2023-07-27	582-247	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	REYNOLDSVL	PA
2023-07-27	582-580	0XXX1XXX · 2 holders which blocks →	ONVOY SPECTRUM, LLC	624H	SABINSVL	PA
2023-07-27	582-582	2XXX5XXX · 2 holders which blocks →	ONVOY SPECTRUM, LLC	624H	STOYSTOWN	PA
2023-07-27	582-802	0XXX1XXX2XXX · 3 holders which blocks →	ONVOY SPECTRUM, LLC	624H	TYRONE	PA
2023-07-27	582-880	0XXX which blocks →	ONVOY SPECTRUM, LLC	624H	SYKESVILLE	PA
2023-07-27	582-882	0XXX2XXX · 2 holders which blocks →	ONVOY SPECTRUM, LLC	624H	TIDIOUTE	PA
2023-07-18	582-245	0–9 XXXall 10 · 4 holders which blocks →	BOOST SUBSCRIBERCO L.L.C.	490J	ERIE	PA
2023-07-13	582-244	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	BOALSBURG	PA
2023-06-21	582-241	0XXX1XXX2XXX4XXX · 3 holders which blocks →	TWILIO INTERNATIONAL, INC.	506J	TIMBLIN	PA
2023-06-21	582-243	0XXX1XXX2XXX · 3 holders which blocks →	ONVOY, LLC - PA	547E	WELLERSBG	PA
2023-06-15	582-242	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	REYNOLDSVL	PA
2023-06-07	582-239	0XXX1XXX2XXX · 3 holders which blocks →	ONVOY, LLC - PA	547E	COOPERSTN	PA
2023-06-07	582-240	0XXX2XXX · 2 holders which blocks →	ONVOY, LLC - PA	547E	THREE SPG	PA
2023-05-03	582-237	0XXX1XXX · 2 holders which blocks →	COMCAST IP PHONE, LLC	318J	SOUTH FORK	PA
2023-05-03	582-238	0XXX3XXX5XXX · 3 holders which blocks →	COMCAST IP PHONE, LLC	318J	NANTY GLO	PA
2023-03-16	582-235	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	BOALSBURG	PA
2023-03-16	582-236	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	REYNOLDSVL	PA
2023-03-14	582-820	0XXX7XXX9XXX · 2 holders which blocks →	COMMIO, LLC	939H	HUNTINGDON	PA
2023-02-07	582-233	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks →	NUSO, LLC	732J	OIL CITY	PA
2023-02-07	582-234	0–9 XXXall 10 · 2 holders which blocks →	NUSO, LLC	732J	JOHNSTOWN	PA
2023-02-03	582-232	0XXX1XXX6XXX · 3 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - PA	7315	WATERFORD	PA
2023-01-13	582-231	0XXX1XXX · 2 holders which blocks →	ONVOY SPECTRUM, LLC	624H	SMETHPORT	PA
2023-01-11	582-229	6XXX9XXX · 2 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - PA	7315	JOHNSONBG	PA
2022-12-05	582-228	0–9 XXXall 10 · 3 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	ERIE	PA
2022-12-01	582-226	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	REYNOLDSVL	PA
2022-11-15	582-206	0–9 XXXall 10 · 6 holders which blocks →	COMMIO, LLC	939H	EDINBORO	PA
2022-11-15	582-225	0XXX1XXX2XXX3XXX8XXX9XXX · 4 holders which blocks →	COMMIO, LLC	939H	TITUSVILLE	PA
2022-11-04	582-224	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	COMMIO, LLC	939H	WINDBER	PA
2022-11-04	582-227	0–9 XXXall 10 · 5 holders which blocks →	COMMIO, LLC	939H	GIRARD	PA
2022-11-03	582-252	2XXX5XXX · 2 holders which blocks →	ONVOY, LLC - PA	547E	RIDGWAY	PA
2022-10-10	582-219	0XXX1XXX2XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	NUSO, LLC	732J	CLEARFIELD	PA
2022-10-10	582-221	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	BOALSBURG	PA
2022-08-12	582-217	6XXX9XXX · 2 holders which blocks →	BOOST SUBSCRIBERCO L.L.C.	490J	MEYERSDALE	PA
2022-08-12	582-218	0XXX1XXX9XXX · 2 holders which blocks →	BOOST SUBSCRIBERCO L.L.C.	490J	TYRONE	PA
2022-08-10	582-216	0XXX which blocks →	BOOST SUBSCRIBERCO L.L.C.	490J	STATE LINE	PA
2022-07-21	582-215	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	REYNOLDSVL	PA
2022-07-06	582-223	0XXX2XXX6XXX · 3 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - PA	7315	CURWENSVL	PA
2022-06-06	582-214	0XXX1XXX2XXX6XXX7XXX · 4 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	SUGARGROVE	PA
2022-05-27	582-213	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	BOALSBURG	PA
2022-04-22	582-212	0XXX1XXX2XXX3XXX6XXX7XXX8XXX · 6 holders which blocks →	BANDWIDTH.COM CLEC, LLC - PA	002F	SPRING ML	PA
2022-03-30	582-852	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 4 holders which blocks →	TWILIO INTERNATIONAL, INC.	506J	ERIE	PA
2022-03-18	582-210	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	BOALSBURG	PA
2022-02-25	582-452	0XXX1XXX5XXX6XXX8XXX · 4 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	WINBURNE	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.