Recent prefix assignments

341 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/26/2026

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

8X8, INC. 43

NEW CINGULAR WIRELESS PCS, LLC - DC 26

Rogers Communications Canada Inc. (Wireless) 23

NEW CINGULAR WIRELESS PCS, LLC - IL 22

ONVOY, LLC - CA 21

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
2021-04-06	520-934	0–9 XXXall 10 · 2 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	TUCSON	AZ
2021-04-06	567-550	0XXX1XXX2XXX3XXX4XXX5XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC - OH	464C	MONTPELIER	OH
2021-04-06	571-866	0–9 XXXall 10 · 5 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	OCCOQUAN	VA
2021-04-06	575-837	0–9 XXXall 10 · 4 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	ALAMOGORDO	NM
2021-04-06	579-335	not yet reported which blocks →	Cooptel	818D	Yamaska	—
2021-04-06	579-355	not yet reported which blocks →	Cooptel	818D	St-Pie-de-Guire	—
2021-04-06	609-629	0–9 XXXall 10 · 5 holders which blocks →	ONVOY SPECTRUM, LLC	624H	ALLENTOWN	NJ
2021-04-06	609-776	0–9 XXXall 10 · 5 holders which blocks →	ONVOY SPECTRUM, LLC	624H	FLORENCE	NJ
2021-04-06	629-253	0–9 XXXall 10 · 4 holders which blocks →	PAETEC ITEL, LLC	829J	NASHVILLE	TN
2021-04-06	639-294	not yet reported which blocks →	Access Communications Co-operative Limited	280H	Rouleau	—
2021-04-06	640-220	0–9 XXXall 10 · 4 holders which blocks →	ONVOY SPECTRUM, LLC	624H	BORDENTOWN	NJ
2021-04-06	640-344	0–9 XXXall 10 · 5 holders which blocks →	ONVOY SPECTRUM, LLC	624H	FORT DIX	NJ
2021-04-06	640-644	0–9 XXXall 10 · 3 holders which blocks →	ONVOY SPECTRUM, LLC	624H	MEDFORD	NJ
2021-04-06	726-822	0–9 XXXwhole prefix which blocks →	TON80 COMMUNICATIONS, LLC	516J	SANANTONIO	TX
2021-04-06	782-641	not yet reported which blocks →	Bell Mobility Aliant	329A	Halifax	—
2021-04-06	785-507	0XXX1XXX7XXX which blocks →	ONVOY, LLC - KS	205F	OSAGE CITY	KS
2021-04-06	785-870	0–9 XXXall 10 · 2 holders which blocks →	COMMIO, LLC	939H	TOPEKA	KS
2021-04-06	819-418	not yet reported which blocks →	Cooptel	818D	St-Felix-de-Kingsey	—
2021-04-06	845-922	0–9 XXXall 10 · 5 holders which blocks →	FRACTEL, LLC	965H	LIBERTY	NY
2021-04-06	850-952	0XXX1XXX3XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	PEERLESS NETWORK OF FLORIDA, LLC - FL	902E	PENSACOLA	FL
2021-04-06	856-554	0–9 XXXall 10 · 4 holders which blocks →	ONVOY SPECTRUM, LLC	624H	BERLIN	NJ
2021-04-06	856-865	0–9 XXXall 10 · 3 holders which blocks →	ONVOY SPECTRUM, LLC	624H	ELMER	NJ
2021-04-06	856-934	0–9 XXXall 10 · 5 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	BRIDGETON	NJ
2021-04-06	865-393	0–9 XXXall 10 · 3 holders which blocks →	PAETEC ITEL, LLC	829J	KNOXVILLE	TN
2021-04-06	901-613	0–9 XXXall 10 · 5 holders which blocks →	TELNYX LLC	073H	ARLINGTON	TN
2021-04-06	936-397	0–9 XXXall 10 · 5 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	LIBERTY	TX
2021-04-06	939-315	0XXX which blocks →	TELNYX LLC	073H	RIOPIEDRAS	PR
2021-04-06	945-542	0–9 XXXall 10 · 6 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	WAXAHACHIE	TX
2021-04-06	959-223	0–9 XXXall 10 · 4 holders which blocks →	HD CARRIER LLC	321J	HARTFORD	CT
2021-04-05	548-808	not yet reported which blocks →	IXICA Communications Inc.	812H	Guelph	—
2021-04-05	580-392	none assigned yet which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	WRIGHTCITY	OK
2021-04-05	814-890	0–9 XXXall 10 · 6 holders which blocks →	HD CARRIER LLC	321J	BEAVERDALE	PA
2021-04-05	909-968	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	ARROWHEAD	CA
2021-04-05	925-445	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	ANTIOCH	CA
2021-04-05	951-576	0–9 XXXall 10 · 6 holders which blocks →	T-MOBILE USA, INC.	6529	WOODCREST	CA
2021-04-05	951-580	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	PERRIS	CA
2021-04-02	220-221	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - OH	464C	MARION	OH
2021-04-02	234-837	0–9 XXXall 10 · 6 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	TWINSBURG	OH
2021-04-02	234-934	0XXX1XXX2XXX3XXX4XXX6XXX9XXX · 6 holders which blocks →	TON80 COMMUNICATIONS, LLC	516J	GARRETTSVL	OH
2021-04-02	272-260	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	PITTSTON	PA
2021-04-02	309-892	0XXX1XXX8XXX9XXX · 3 holders which blocks →	TWILIO INTERNATIONAL, INC.	506J	PEORIA	IL
2021-04-02	313-944	0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	FRACTEL, LLC	965H	DETROITZN2	MI
2021-04-02	332-247	0–9 XXXwhole prefix which blocks →	PAETEC ITEL, LLC	829J	NWYRCYZN01	NY
2021-04-02	361-631	0–9 XXXall 10 · 3 holders which blocks →	COMMIO, LLC	939H	C CHRISTI	TX
2021-04-02	413-867	0–9 XXXall 10 · 5 holders which blocks →	COMMIO, LLC	939H	SPRINGFLD	MA
2021-04-02	442-357	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	ENCINITAS	CA
2021-04-02	447-203	0XXX1XXX2XXX3XXX5XXX · 3 holders which blocks →	TELNYX LLC	073H	ROBERTS	IL
2021-04-02	447-787	0–9 XXXwhole prefix which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - IL	7136	SPRINGFLD	IL
2021-04-02	447-788	0–9 XXXwhole prefix which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - IL	7136	SPRINGFLD	IL
2021-04-02	516-831	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NY	997E	NASSAUZN08	NY

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/26/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.