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
2016-01-04	518-949	0–9 XXXall 10 · 2 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NY	6959	ALBANY	NY
2016-01-04	540-698	0–9 XXXall 10 · 5 holders which blocks →	PEERLESS NETWORK OF VIRGINIA, LLC - VA	275G	SHAWSVILLE	VA
2016-01-04	585-685	0–9 XXXall 10 · 6 holders which blocks →	INTEGRATED PATH COMMUNICATIONS, LLC - NY	271G	ROCHESTER	NY
2016-01-04	586-241	0–9 XXXall 10 · 3 holders which blocks →	METROPCS, INC.	5562	ROSEVILLE	MI
2016-01-04	587-965	not yet reported which blocks →	Bell Mobility	6574	Calgary	—
2016-01-04	603-404	0–9 XXXall 10 · 4 holders which blocks →	BELL ATLANTIC MOBILE, INC	6386	DERRY	NH
2016-01-04	639-630	not yet reported which blocks →	Distributel	081E	Saskatoon	—
2016-01-04	647-840	not yet reported which blocks →	Bell Mobility	6574	Toronto	—
2016-01-04	778-854	not yet reported which blocks →	Bell Mobility	6574	Vancouver	—
2016-01-04	781-732	0–9 XXXall 10 · 6 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA	6387	LYNN	MA
2016-01-04	782-848	not yet reported which blocks →	Bell Mobility Aliant	329A	Halifax	—
2016-01-04	804-465	0–9 XXXall 10 · 6 holders which blocks →	PEERLESS NETWORK OF VIRGINIA, LLC - VA	275G	MONTROSS	VA
2016-01-04	814-760	0XXX1XXX2XXX6XXX7XXX8XXX · 5 holders which blocks →	ONVOY, LLC - PA	547E	MCKEAN	PA
2016-01-04	931-740	0XXX1XXX2XXX4XXX8XXX · 3 holders which blocks →	ONVOY, LLC - TN	525E	NORMANDY	TN
2016-01-04	978-797	0XXX1XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks →	ONVOY, LLC - MA	892D	ROCKPORT	MA
2015-12-31	639-221	not yet reported which blocks →	Bell West Inc.	2933	Regina	—
2015-12-31	647-841	not yet reported which blocks →	Bell Mobility	6574	Toronto	—
2015-12-30	226-332	not yet reported which blocks →	Bell Mobility	6574	Guelph	—
2015-12-30	267-780	0–9 XXXall 10 · 6 holders which blocks →	BARR TELL USA, INC. - PA	752H	PHLDLPHZN1	PA
2015-12-30	469-758	0–9 XXXall 10 · 6 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - TX	6114	CARROLLTON	TX
2015-12-30	551-202	0–9 XXXall 10 · 6 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	CLIFFSIDE	NJ
2015-12-30	551-240	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	UNION CITY	NJ
2015-12-30	639-220	not yet reported which blocks →	Bell West Inc.	2933	Saskatoon	—
2015-12-30	682-407	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	ARLINGTON	TX
2015-12-30	778-268	not yet reported which blocks →	Bell Mobility	6574	Nanaimo	—
2015-12-30	781-660	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	WEYMOUTH	MA
2015-12-30	782-352	not yet reported which blocks →	TELUS Integrated Communications	2782	Kingston	—
2015-12-30	782-353	not yet reported which blocks →	TELUS Integrated Communications	2782	Saulnierville	—
2015-12-30	782-354	not yet reported which blocks →	TELUS Integrated Communications	2782	Shelburne	—
2015-12-30	848-251	0–9 XXXall 10 · 6 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	TOMS RIVER	NJ
2015-12-30	910-407	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - NC	638E	SCOTTSHILL	NC
2015-12-30	956-625	0–9 XXXall 10 · 6 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - TX	7138	LAREDO	TX
2015-12-30	978-288	0–9 XXXall 10 · 6 holders which blocks →	ONVOY, LLC - MA	892D	BEVERLY	MA
2015-12-29	346-321	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	CHANNELVW	TX
2015-12-29	385-250	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - UT	871E	PROVO	UT
2015-12-29	414-346	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - WI	225C	MILWAUKZN5	WI
2015-12-29	434-255	0–9 XXXall 10 · 6 holders which blocks →	PEERLESS NETWORK OF VIRGINIA, LLC - VA	275G	ARVONIA	VA
2015-12-29	434-256	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	PEERLESS NETWORK OF VIRGINIA, LLC - VA	275G	BOYDTON	VA
2015-12-29	515-206	0–9 XXXall 10 · 7 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IA	9877	FORT DODGE	IA
2015-12-29	520-217	0–9 XXXall 10 · 4 holders which blocks →	QWEST CORPORATION	9636	CASAGRANDE	AZ
2015-12-29	612-475	0–9 XXXall 10 · 2 holders which blocks →	METROPCS, INC.	5562	TWINCITIES	MN
2015-12-29	629-206	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - TN	525E	NASHVILLE	TN
2015-12-29	681-307	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	LOGAN	WV
2015-12-29	804-259	0–9 XXXall 10 · 6 holders which blocks →	PEERLESS NETWORK OF VIRGINIA, LLC - VA	275G	HEATHSVL	VA
2015-12-29	910-406	0–9 XXXall 10 · 5 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	SCOTTSHILL	NC
2015-12-28	213-205	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - CA	649C	LSAN DA 07	CA
2015-12-28	302-244	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - DE	969E	DOVER	DE
2015-12-28	307-226	0–9 XXXall 10 · 6 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	AFTON	WY
2015-12-28	339-209	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - MA	892D	WEYMOUTH	MA
2015-12-28	346-260	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	SATSUMA	TX

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.