Recent prefix assignments

334 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/28/2026

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 19

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
2020-02-03	867-531	not yet reported which blocks →	Bell Mobility	6574	Resolute	—
2020-02-03	867-532	not yet reported which blocks →	Bell Mobility	6574	Clyde River	—
2020-01-31	365-745	not yet reported which blocks →	Iristel Inc.	154E	Milton	—
2020-01-31	365-825	not yet reported which blocks →	Iristel Inc.	154E	Newmarket	—
2020-01-31	424-441	0–9 XXXall 10 · 7 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA	6006	MALIBU	CA
2020-01-31	438-942	not yet reported which blocks →	TELUS Quebec	2243	Montreal	—
2020-01-31	469-780	0–9 XXXall 10 · 5 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - TX	7148	CEDAR HILL	TX
2020-01-31	470-561	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA	6540	ATLANTA	GA
2020-01-31	571-450	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - VA	079F	LORTON	VA
2020-01-31	682-324	0–9 XXXall 10 · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TX	6114	FORT WORTH	TX
2020-01-31	862-348	0–9 XXXall 10 · 7 holders which blocks →	BANDWIDTH.COM CLEC, LLC - NJ	118F	CALDWELL	NJ
2020-01-31	980-305	0–9 XXXall 10 · 6 holders which blocks →	METROPCS, INC.	5562	SALISBURY	NC
2020-01-30	365-645	not yet reported which blocks →	Iristel Inc.	154E	Streetsville	—
2020-01-30	365-675	not yet reported which blocks →	Iristel Inc.	154E	Hamilton	—
2020-01-30	404-757	0–9 XXXall 10 · 3 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - GA	8392	ATLANTA	GA
2020-01-30	463-230	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IN	105F	INDIANAPLS	IN
2020-01-30	470-560	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - GA	983E	CUMMING	GA
2020-01-30	501-387	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - AR	196F	BEEBE	AR
2020-01-30	501-389	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - AR	196F	SEARCY	AR
2020-01-30	548-900	not yet reported which blocks →	Iristel Inc.	154E	Brantford	—
2020-01-30	581-441	not yet reported which blocks →	Iristel Inc.	154E	Bonaventure	—
2020-01-30	581-499	not yet reported which blocks →	Iristel Inc.	154E	Carleton	—
2020-01-30	581-870	not yet reported which blocks →	Iristel Inc.	154E	Thetford Mines	—
2020-01-30	581-900	not yet reported which blocks →	Iristel Inc.	154E	Baie-Trinite	—
2020-01-30	647-509	not yet reported which blocks →	Videotron Ltd.	787G	Toronto	—
2020-01-29	202-937	0–9 XXXall 10 · 3 holders which blocks →	OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC	6855	WSHNGTNZN1	DC
2020-01-29	205-931	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - AL	072F	CARBONHILL	AL
2020-01-29	217-815	0XXX1XXX2XXX3XXX4XXX5XXX8XXX · 4 holders which blocks →	ONVOY, LLC	224C	NIOTA	IL
2020-01-29	365-305	not yet reported which blocks →	Iristel Inc.	154E	Ajax-Pickering	—
2020-01-29	365-360	not yet reported which blocks →	Iristel Inc.	154E	Markham	—
2020-01-29	365-361	not yet reported which blocks →	Iristel Inc.	154E	Markham	—
2020-01-29	365-362	not yet reported which blocks →	Iristel Inc.	154E	Markham	—
2020-01-29	431-441	not yet reported which blocks →	Iristel Inc.	154E	Winnipeg	—
2020-01-29	431-444	not yet reported which blocks →	Iristel Inc.	154E	Winnipeg	—
2020-01-29	463-229	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IN	105F	ZIONSVILLE	IN
2020-01-29	602-649	0–9 XXXall 10 · 2 holders which blocks →	METROPCS, INC.	5562	PHOENIX	AZ
2020-01-29	619-617	0–9 XXXall 10 · 3 holders which blocks →	METROPCS, INC.	5562	CHULAVISTA	CA
2020-01-29	929-535	0–9 XXXall 10 · 3 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN03	NY
2020-01-29	929-538	0–9 XXXall 10 · 5 holders which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	NWYRCYZN12	NY
2020-01-28	254-370	0–9 XXXall 10 · 2 holders which blocks →	T-MOBILE USA, INC.	6529	KILLEEN	TX
2020-01-28	346-419	0–9 XXXall 10 · 4 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	BAMMEL	TX
2020-01-28	657-418	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	SANTA ANA	CA
2020-01-28	808-204	0–9 XXXall 10 · 6 holders which blocks →	TELNYX LLC	073H	HONOLULU	HI
2020-01-27	202-934	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DC	6402	WSHNGTNZN1	DC
2020-01-27	217-858	0–9 XXXall 10 · 5 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - IL	7136	THOMASBORO	IL
2020-01-27	223-229	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA	6392	LEBANON	PA
2020-01-27	223-323	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - PA	547E	TERRE HILL	PA
2020-01-27	223-332	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks →	ONVOY, LLC - PA	547E	LYKENS	PA
2020-01-27	226-739	not yet reported which blocks →	Videotron Ltd.	787G	Windsor	—
2020-01-27	236-591	not yet reported which blocks →	Videotron Ltd.	787G	Vancouver	—

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/28/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.