Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

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 339

CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 22

ONVOY, LLC - MA 18

PAETEC ITEL, LLC 11

MULTIPLE OCN LISTING 9

LEVEL 3 COMMUNICATIONS, LLC - MA 8

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
2026-04-28	339-246	not yet reported which blocks →	SHELCOMM	0051	HANOVER	MA
2025-07-01	339-265	3XXX4XXX5XXX6XXX which blocks →	TC SYSTEMS, INC.	7135	LEXINGTON	MA
2025-03-04	339-339	0–9 XXXwhole prefix which blocks →	MASS MOBILE LLC	125L	WALTHAM	MA
2023-08-24	339-242	0–9 XXXall 10 · 2 holders which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	MEDFORD	MA
2023-08-24	339-243	7XXX8XXX9XXX which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	SAUGUS	MA
2023-08-24	339-245	0–9 XXXall 10 · 4 holders which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	LYNN	MA
2023-08-10	339-241	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	MEDFORD	MA
2023-07-18	339-239	0XXX1XXX2XXX3XXX6XXX8XXX · 4 holders which blocks →	ONVOY, LLC - MA	892D	BRYANTVL	MA
2023-05-22	339-238	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks →	BOOST SUBSCRIBERCO L.L.C.	490J	NEEDHAM	MA
2022-02-09	339-463	0–9 XXXall 10 · 3 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	BRAINTREE	MA
2022-02-09	339-746	0–9 XXXall 10 · 4 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	WEYMOUTH	MA
2022-02-01	339-837	0–9 XXXall 10 · 4 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	RANDOLPH	MA
2022-01-31	339-273	1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	MARSHFIELD	MA
2022-01-31	339-737	0XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	HANOVER	MA
2022-01-13	339-466	0–9 XXXall 10 · 6 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	NORWELL	MA
2022-01-13	339-675	0XXX1XXX2XXX3XXX4XXX5XXX · 4 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	WHITMAN	MA
2021-08-18	339-231	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 3 holders which blocks →	COMCAST IP PHONE, LLC	318J	SAUGUS	MA
2021-08-11	339-228	0–9 XXXall 10 · 4 holders which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	LYNN	MA
2021-08-10	339-345	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	MARBLEHEAD	MA
2021-06-11	339-232	0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks →	ONVOY, LLC - MA	892D	DUXBURY	MA
2021-04-26	339-365	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	BRYANTVL	MA
2021-04-12	339-399	0XXX1XXX3XXX4XXX5XXX8XXX9XXX · 4 holders which blocks →	FRACTEL, LLC	965H	SHARON	MA
2021-03-30	339-329	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - MA	892D	MARBLEHEAD	MA
2021-03-30	339-330	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - MA	892D	BRYANTVL	MA
2021-03-17	339-565	0XXX1XXX2XXX3XXX5XXX7XXX8XXX · 3 holders which blocks →	ONVOY SPECTRUM, LLC	624H	LINCOLN	MA
2021-01-25	339-500	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - MA	892D	LYNN	MA
2020-12-07	339-255	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - MA	892D	WEYMOUTH	MA
2020-06-16	339-331	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks →	ONVOY, LLC - MA	892D	DUXBURY	MA
2020-05-08	339-300	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	FRACTEL, LLC	965H	COHASSET	MA
2020-05-08	339-356	0XXX1XXX2XXX3XXX4XXX6XXX7XXX9XXX · 3 holders which blocks →	FRACTEL, LLC	965H	HULL	MA
2020-05-08	339-400	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	SAUGUS	MA
2020-05-08	339-529	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	FRACTEL, LLC	965H	WHITMAN	MA
2019-05-28	339-338	0–9 XXXall 10 · 6 holders which blocks →	METROPCS, INC.	5562	LYNN	MA
2019-02-21	339-229	0–9 XXXall 10 · 3 holders which blocks →	PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA	268F	WEYMOUTH	MA
2019-02-21	339-800	0–9 XXXall 10 · 4 holders which blocks →	TERRA NOVA TELECOM INC.	145J	ARLINGTON	MA
2018-09-24	339-220	0–9 XXXall 10 · 3 holders which blocks →	PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA	268F	BRYANTVL	MA
2018-09-11	339-213	0–9 XXXall 10 · 5 holders which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	DEDHAM	MA
2017-11-20	339-218	0XXX1XXX3XXX4XXX5XXX6XXX8XXX9XXX · 2 holders which blocks →	METROPCS, INC.	5562	HANOVER	MA
2017-10-12	339-217	0–9 XXXall 10 · 2 holders which blocks →	COMCAST IP PHONE, LLC	318J	DUXBURY	MA
2017-08-31	339-666	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - MA	892D	LYNN	MA
2017-05-04	339-212	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks →	METROPCS, INC.	5562	MARBLEHEAD	MA
2016-12-02	339-240	0–9 XXXall 10 · 4 holders which blocks →	TELNYX LLC	073H	BURLINGTON	MA
2016-03-03	339-210	0–9 XXXall 10 · 8 holders which blocks →	ONVOY, LLC - MA	892D	SAUGUS	MA
2016-03-03	339-215	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - MA	892D	LEXINGTON	MA
2016-01-11	339-216	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	RANDOLPH	MA
2015-12-28	339-209	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - MA	892D	WEYMOUTH	MA
2015-12-17	339-207	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - MA	892D	LYNN	MA
2015-03-25	339-444	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - MA	892D	SAUGUS	MA
2015-03-23	339-888	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - MA	892D	LYNN	MA
2013-11-14	339-208	0–9 XXXwhole prefix which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	RANDOLPH	MA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.