Recent prefix assignments

7 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, last 30 days — NPA 479

NEW CINGULAR WIRELESS PCS, LLC - IL 3

ONVOY, LLC - AR 2

CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR 2

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
2020-01-21	479-378	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	GARFIELD	AR
2019-11-25	479-376	0XXX1XXX2XXX · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - AR	5179	FORUM	AR
2019-11-25	479-377	0XXX1XXX2XXX9XXX · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - AR	5179	AURORA	AR
2019-10-15	479-371	0–9 XXXwhole prefix which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - AR	802C	BENTONVL	AR
2019-10-15	479-374	0–9 XXXwhole prefix which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - AR	802C	BENTONVL	AR
2019-10-15	479-375	0–9 XXXwhole prefix which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - AR	802C	BENTONVL	AR
2019-10-11	479-368	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	FAYETTEVL	AR
2019-10-10	479-900	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - AR	348F	FAYETTEVL	AR
2019-07-02	479-364	0–9 XXXall 10 · 4 holders which blocks →	COMCAST IP PHONE, LLC	318J	BENTONVL	AR
2019-06-27	479-362	0–9 XXXall 10 · 3 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AR	7277	BENTONVL	AR
2019-02-12	479-360	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	BENTONVL	AR
2019-01-18	479-999	0–9 XXXall 10 · 4 holders which blocks →	TERRA NOVA TELECOM INC.	145J	MENA	AR
2019-01-10	479-469	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - AR	348F	MENA	AR
2018-12-12	479-351	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	HINDSVILLE	AR
2018-11-09	479-350	0–9 XXXall 10 · 2 holders which blocks →	VONAGE AMERICA LLC	197D	BENTONVL	AR
2018-10-15	479-352	0–9 XXXwhole prefix which blocks →	T-MOBILE USA, INC.	6529	ALMA	AR
2018-10-15	479-370	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	ALMA	AR
2018-09-19	479-339	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - AR	348F	BOLES	AR
2018-09-19	479-341	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - AR	348F	CENTERTON	AR
2018-09-19	479-342	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - AR	348F	GARFIELD	AR
2018-09-19	479-346	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - AR	348F	GATEWAY	AR
2018-09-19	479-348	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - AR	348F	MAYSVILLE	AR
2018-09-19	479-349	0–9 XXXall 10 · 2 holders which blocks →	ONVOY, LLC - AR	348F	SULPHURSPG	AR
2018-09-06	479-974	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - AR	348F	FORT SMITH	AR
2018-03-29	479-337	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	ROGERS	AR
2018-03-23	479-335	0–9 XXXall 10 · 6 holders which blocks →	VONAGE AMERICA LLC	197D	ROGERS	AR
2018-03-21	479-332	0–9 XXXall 10 · 6 holders which blocks →	T-MOBILE USA, INC.	6529	FAYETTEVL	AR
2018-03-21	479-334	0–9 XXXall 10 · 7 holders which blocks →	T-MOBILE USA, INC.	6529	SPRINGDALE	AR
2018-03-14	479-329	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	ALMA	AR
2018-02-13	479-327	0XXX1XXX · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - AR	5179	STRICKLER	AR
2018-02-13	479-328	0XXX1XXX · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - AR	5179	MORROW	AR
2018-01-09	479-324	0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX · 3 holders which blocks →	VANTAGE TELECOM, LLC DBA NEWROADS TELECOM - AR	5018	RUSSELLVL	AR
2017-12-01	479-281	1XXX2XXX · 2 holders which blocks →	COMCAST IP PHONE, LLC	318J	LAVACA	AR
2017-12-01	479-318	0–9 XXXall 10 · 5 holders which blocks →	COMCAST IP PHONE, LLC	318J	SPRINGDALE	AR
2017-11-21	479-279	0–9 XXXall 10 · 4 holders which blocks →	COMCAST IP PHONE, LLC	318J	VAN BUREN	AR
2017-11-16	479-278	0–9 XXXall 10 · 5 holders which blocks →	METROPCS, INC.	5562	ROGERS	AR
2017-11-01	479-257	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AR	6805	ROGERS	AR
2017-10-18	479-888	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - AR	348F	MENA	AR
2017-10-09	479-247	0XXX9XXX · 2 holders which blocks →	WINDSTREAM ARKANSAS, INC.	1691	WEST FORK	AR
2017-05-25	479-241	0XXX2XXX · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - AR	5179	ST PAUL	AR
2017-05-24	479-210	0XXX1XXX2XXX · 3 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - AR	5179	DRAKES CRK	AR
2017-01-19	479-367	0–9 XXXall 10 · 5 holders which blocks →	SOUTHWESTERN BELL	9533	BENTONVL	AR
2017-01-17	479-551	0–9 XXXall 10 · 6 holders which blocks →	E. RITTER COMMUNICATIONS, LLC	128L	FORT SMITH	AR
2016-08-16	479-402	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	BENTONVL	AR
2016-08-16	479-407	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	ALMA	AR
2016-03-02	479-336	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	LONDON	AR
2016-01-04	479-777	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - AR	348F	MENA	AR
2015-09-18	479-401	0–9 XXXall 10 · 5 holders which blocks →	SOUTHWESTERN BELL	9533	FORT SMITH	AR
2015-09-15	479-260	0–9 XXXwhole prefix which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - AR	802C	SPRINGDALE	AR
2015-08-31	479-319	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - AR	5179	BENTONVL	AR

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.