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
2016-12-13	309-571	0–9 XXXall 10 · 2 holders which blocks →	TELNYX LLC	073H	PEORIA	IL
2016-12-13	352-651	0–9 XXXall 10 · 6 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	CRYSTALRIV	FL
2016-12-13	386-400	0–9 XXXall 10 · 3 holders which blocks →	TELNYX LLC	073H	LAKE CITY	FL
2016-12-13	407-751	0–9 XXXall 10 · 4 holders which blocks →	TELNYX LLC	073H	ORLANDO	FL
2016-12-13	442-215	0–9 XXXall 10 · 6 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	INDIO	CA
2016-12-13	442-216	0–9 XXXall 10 · 5 holders which blocks →	T-MOBILE USA, INC.	6529	VISTA	CA
2016-12-13	587-844	not yet reported which blocks →	Iristel Inc.	154E	Camrose	—
2016-12-13	647-276	not yet reported which blocks →	IXICA Communications Inc.	812H	Toronto	—
2016-12-13	708-840	0–9 XXXall 10 · 7 holders which blocks →	T-MOBILE USA, INC.	6529	TINLEYPARK	IL
2016-12-13	725-605	0–9 XXXall 10 · 4 holders which blocks →	TELNYX LLC	073H	LAS VEGAS	NV
2016-12-13	754-225	0–9 XXXall 10 · 5 holders which blocks →	TELNYX LLC	073H	CORAL SPG	FL
2016-12-13	778-486	not yet reported which blocks →	Fibernetics Corporation	464D	Victoria	—
2016-12-13	848-257	0–9 XXXall 10 · 7 holders which blocks →	CABLEVISION LIGHTPATH, INC. - NJ	4948	EATONTOWN	NJ
2016-12-13	864-747	0–9 XXXall 10 · 3 holders which blocks →	SUNCOM DBA T-MOBILE USA	8645	GREENVILLE	SC
2016-12-12	205-845	not yet reported which blocks →	PINE BELT BROADCASTING DBA PINE BELT TEL COMP SVCS	9736	BUTLER	AL
2016-12-12	224-605	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	ELGIN	IL
2016-12-12	224-607	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	ARLIGTNHTS	IL
2016-12-12	236-300	not yet reported which blocks →	Iristel Inc.	154E	Williams Lake	—
2016-12-12	249-497	not yet reported which blocks →	Iristel Inc.	154E	Gore Bay	—
2016-12-12	251-400	not yet reported which blocks →	PINE BELT BROADCASTING DBA PINE BELT TEL COMP SVCS	9736	GROVE HILL	AL
2016-12-12	346-360	0–9 XXXall 10 · 3 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	BAMMEL	TX
2016-12-12	510-941	0–9 XXXall 10 · 5 holders which blocks →	COMCAST PHONE OF CALIFORNIA, LLC	394L	FRNK GRNLF	CA
2016-12-12	620-533	0XXX5XXX · 2 holders which blocks →	NEX-TECH WIRELESS, LLC	122D	LITTLE RIV	KS
2016-12-12	682-386	0–9 XXXall 10 · 4 holders which blocks →	T-MOBILE USA, INC.	6529	ARLINGTON	TX
2016-12-12	952-234	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - MN	184D	TWINCITIES	MN
2016-12-09	321-503	0–9 XXXall 10 · 4 holders which blocks →	OMNIPOINT MIAMI E LICENSE, LLC	6889	COCOA	FL
2016-12-09	407-799	0–9 XXXall 10 · 3 holders which blocks →	AERIAL COMMUNICATIONS, INC.	6701	KISSIMMEE	FL
2016-12-09	510-826	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	HAYWARD	CA
2016-12-09	520-341	0–9 XXXall 10 · 6 holders which blocks →	TELNYX LLC	073H	NOGALES	AZ
2016-12-09	581-805	not yet reported which blocks →	Iristel Inc.	154E	Rimouski	—
2016-12-09	581-806	not yet reported which blocks →	Iristel Inc.	154E	Saint-Henri-de-Levis	—
2016-12-09	581-807	not yet reported which blocks →	Iristel Inc.	154E	Montmagny	—
2016-12-09	581-880	not yet reported which blocks →	Iristel Inc.	154E	Gaspe	—
2016-12-09	605-560	0XXX1XXX · 2 holders which blocks →	MCC TELEPHONY OF THE MID-WEST, LLC - SD	920F	BROOKINGSR	SD
2016-12-09	647-568	not yet reported which blocks →	Videotron Ltd.	787G	Toronto	—
2016-12-09	719-374	0–9 XXXall 10 · 7 holders which blocks →	TELNYX LLC	073H	COLORDOSPG	CO
2016-12-09	720-487	0–9 XXXall 10 · 3 holders which blocks →	TELNYX LLC	073H	LONGMONT	CO
2016-12-09	774-712	0–9 XXXall 10 · 5 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	ROCHESTER	MA
2016-12-09	774-713	0XXX1XXX2XXX3XXX7XXX8XXX9XXX · 5 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	WESTPORT	MA
2016-12-09	774-717	0XXX1XXX2XXX3XXX4XXX6XXX8XXX9XXX · 5 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	CHILMARK	MA
2016-12-09	803-833	0–9 XXXall 10 · 2 holders which blocks →	SOUTH CAROLINA TELECOMM GRP HOLDINGS, LLC - SC	527H	ROCK HILL	SC
2016-12-09	808-376	0–9 XXXall 10 · 5 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	HONOLULU	HI
2016-12-09	825-408	not yet reported which blocks →	TELUS	8084	Calgary	—
2016-12-09	825-409	not yet reported which blocks →	TELUS	8084	Fort McMurray	—
2016-12-08	480-667	0–9 XXXall 10 · 2 holders which blocks →	METROPCS, INC.	5562	PHOENIX	AZ
2016-12-08	539-215	0–9 XXXall 10 · 6 holders which blocks →	CENTURYLINK COMMUNICATIONS, LLC	508J	TULSA	OK
2016-12-08	602-583	0–9 XXXall 10 · 2 holders which blocks →	METROPCS, INC.	5562	PHOENIX	AZ
2016-12-08	720-592	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	DENVER	CO
2016-12-08	740-822	0–9 XXXall 10 · 7 holders which blocks →	TWC IP ENABLED SERVICES, LLC	793K	HEBRON	OH
2016-12-08	803-841	1XXX5XXX which blocks →	SOUTH CAROLINA TELECOMM GRP HOLDINGS, LLC - SC	527H	PELION	SC

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.