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 913

SOUTHWESTERN BELL 164

AERIAL COMMUNICATIONS, INC. 86

NEW CINGULAR WIRELESS PCS, LLC - IL 33

ONVOY, LLC - KS 30

CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KS 23

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
2020-10-02	913-391	0–9 XXXall 10 · 5 holders which blocks →	HD CARRIER LLC	321J	KANSASCITY	KS
2020-10-02	913-733	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - KS	205F	DE SOTO	KS
2020-08-06	913-389	0–9 XXXall 10 · 5 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	KANSASCITY	KS
2020-07-30	913-388	0–9 XXXall 10 · 2 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	GARDNER	KS
2020-07-01	913-386	0–9 XXXall 10 · 3 holders which blocks →	NUSO, LLC	478J	KANSASCITY	KS
2020-06-30	913-500	0XXX1XXX3XXX5XXX8XXX9XXX · 3 holders which blocks →	FRACTEL, LLC	965H	MOUND CITY	KS
2020-06-30	913-600	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	OLATHE	KS
2020-06-30	913-842	5XXX6XXX · 2 holders which blocks →	FRACTEL, LLC	965H	WINCHESTER	KS
2020-03-30	913-382	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	BONNER SPG	KS
2019-12-17	913-379	0–9 XXXall 10 · 3 holders which blocks →	AVID COMMUNICATIONS, LLC - KS	742D	KANSASCITY	KS
2019-12-05	913-374	0–9 XXXall 10 · 3 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - KS	7593	KANSASCITY	KS
2019-11-26	913-372	0–9 XXXall 10 · 3 holders which blocks →	RAINBOW COMMUNICATIONS, LLC - KS	330D	ATCHISON	KS
2019-11-18	913-368	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	GARDNER	KS
2019-08-13	913-363	0–9 XXXall 10 · 2 holders which blocks →	BANDWIDTH.COM CLEC, LLC - KS	986E	BONNER SPG	KS
2019-07-18	913-359	0–9 XXXall 10 · 2 holders which blocks →	BANDWIDTH.COM CLEC, LLC - KS	986E	KANSASCITY	KS
2019-06-21	913-358	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - KS	986E	ATCHISON	KS
2019-06-21	913-361	0–9 XXXall 10 · 6 holders which blocks →	METROPCS, INC.	5562	OLATHE	KS
2019-05-31	913-357	0–9 XXXall 10 · 3 holders which blocks →	CSC WIRELESS, LLC	425J	PAOLA	KS
2019-05-09	913-308	0–9 XXXall 10 · 2 holders which blocks →	BANDWIDTH.COM CLEC, LLC - KS	986E	BONNER SPG	KS
2019-02-22	913-900	0XXX1XXX3XXX9XXX · 3 holders which blocks →	TERRA NOVA TELECOM INC.	145J	LANCASTER	KS
2019-02-07	913-349	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - KS	986E	DE SOTO	KS
2019-01-22	913-666	0–9 XXXall 10 · 3 holders which blocks →	FRACTEL, LLC	965H	KANSASCITY	KS
2019-01-08	913-348	0–9 XXXall 10 · 5 holders which blocks →	PAETEC ITEL, LLC	829J	KANSASCITY	KS
2018-11-15	913-350	0–9 XXXwhole prefix which blocks →	VONAGE AMERICA LLC	197D	KANSASCITY	KS
2018-11-15	913-914	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - KS	205F	KANSASCITY	KS
2018-10-29	913-347	0–9 XXXall 10 · 4 holders which blocks →	PEERLESS NETWORK OF KANSAS, LLC - KS	018H	TONGANOXIE	KS
2018-10-04	913-346	0–9 XXXall 10 · 2 holders which blocks →	BANDWIDTH.COM CLEC, LLC - KS	986E	BONNER SPG	KS
2018-06-13	913-330	0XXX which blocks →	RAINBOW COMMUNICATIONS, LLC - KS	330D	LANCASTER	KS
2018-05-10	913-329	0–9 XXXall 10 · 3 holders which blocks →	AIRESPRING, INC.	996H	KANSASCITY	KS
2018-05-01	913-318	0–9 XXXall 10 · 6 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	KANSASCITY	KS
2018-03-05	913-521	0–9 XXXall 10 · 5 holders which blocks →	AVID COMMUNICATIONS, LLC - KS	742D	KANSASCITY	KS
2018-01-12	913-413	0–9 XXXall 10 · 4 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	KANSASCITY	KS
2017-12-04	913-355	0–9 XXXall 10 · 3 holders which blocks →	EVERFAST FIBER NETWORKS LLC	3915	OLATHE	KS
2017-11-07	913-303	0–9 XXXall 10 · 3 holders which blocks →	EVERFAST FIBER NETWORKS LLC	3915	BONNER SPG	KS
2017-11-02	913-820	0–9 XXXwhole prefix which blocks →	AERIAL COMMUNICATIONS, INC.	6701	KANSASCITY	KS
2017-09-01	913-300	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KS	6532	KANSASCITY	KS
2017-05-19	913-337	0–9 XXXwhole prefix which blocks →	AERIAL COMMUNICATIONS, INC.	6701	KANSASCITY	KS
2017-05-01	913-336	0–9 XXXall 10 · 4 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	ATCHISON	KS
2017-05-01	913-343	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KS	6532	KANSASCITY	KS
2017-02-24	913-277	0–9 XXXall 10 · 2 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - KS	8995	KANSASCITY	KS
2016-10-14	913-320	0–9 XXXwhole prefix which blocks →	PEERLESS NETWORK OF KANSAS, LLC - KS	018H	KANSASCITY	KS
2016-10-07	913-356	0–9 XXXall 10 · 4 holders which blocks →	EVERFAST FIBER NETWORKS LLC	3915	BONNER SPG	KS
2016-07-22	913-942	0–9 XXXall 10 · 6 holders which blocks →	SOUTHWESTERN BELL	9533	KANSASCITY	KS
2016-07-20	913-289	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - KS	986E	OLATHE	KS
2016-07-20	913-335	0–9 XXXall 10 · 8 holders which blocks →	BANDWIDTH.COM CLEC, LLC - KS	986E	KANSASCITY	KS
2016-06-17	913-295	0–9 XXXall 10 · 3 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KS	6532	KANSASCITY	KS
2016-06-03	913-280	0–9 XXXwhole prefix which blocks →	AERIAL COMMUNICATIONS, INC.	6701	KANSASCITY	KS
2016-05-13	913-263	0–9 XXXwhole prefix which blocks →	AERIAL COMMUNICATIONS, INC.	6701	KANSASCITY	KS
2016-05-02	913-373	0–9 XXXwhole prefix which blocks →	SOUTHWESTERN BELL	9533	KANSASCITY	KS
2016-04-08	913-326	0–9 XXXall 10 · 2 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - KS	2240	KANSASCITY	KS

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.