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
2020-05-15	202-972	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - DC	850D	WSHNGTNZN1	DC
2020-05-15	217-860	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	CHATHAM	IL
2020-05-15	469-827	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - TX	7148	FRISCO	TX
2020-05-15	469-829	0–9 XXXall 10 · 4 holders which blocks →	CSC VOICE, LLC	612K	PLANO	TX
2020-05-15	516-842	0–9 XXXall 10 · 4 holders which blocks →	VONAGE AMERICA LLC	197D	NASSAUZN06	NY
2020-05-15	516-862	0–9 XXXall 10 · 6 holders which blocks →	VONAGE AMERICA LLC	197D	NASSAUZN08	NY
2020-05-15	516-878	0–9 XXXall 10 · 8 holders which blocks →	VONAGE AMERICA LLC	197D	NASSAUZN07	NY
2020-05-15	651-377	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - MN	5256	TWINCITIES	MN
2020-05-15	651-515	0–9 XXXall 10 · 4 holders which blocks →	METROPCS, INC.	5562	TWINCITIES	MN
2020-05-15	774-544	0XXX1XXX2XXX3XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC - MA	892D	WEBSTER	MA
2020-05-15	848-301	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - NJ	637C	HOLMDEL	NJ
2020-05-15	848-849	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - NJ	637C	FARMINGDL	NJ
2020-05-15	856-326	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - NJ	637C	BRIDGETON	NJ
2020-05-15	857-567	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX which blocks →	ONVOY, LLC - MA	892D	DORCHESTER	MA
2020-05-15	862-910	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - NJ	637C	PASSAIC	NJ
2020-05-15	929-542	0–9 XXXall 10 · 6 holders which blocks →	VONAGE AMERICA LLC	197D	NWYRCYZN15	NY
2020-05-15	929-558	0–9 XXXall 10 · 3 holders which blocks →	VONAGE AMERICA LLC	197D	NWYRCYZN10	NY
2020-05-15	929-560	0–9 XXXall 10 · 4 holders which blocks →	VONAGE AMERICA LLC	197D	NWYRCYZN14	NY
2020-05-15	929-565	0–9 XXXall 10 · 6 holders which blocks →	VONAGE AMERICA LLC	197D	NWYRCYZN05	NY
2020-05-14	254-465	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks →	FRACTEL, LLC	965H	LORENA	TX
2020-05-14	254-766	0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks →	FRACTEL, LLC	965H	WORTHAM	TX
2020-05-14	254-788	0–9 XXXall 10 · 6 holders which blocks →	FRACTEL, LLC	965H	LEROY	TX
2020-05-14	254-877	0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 6 holders which blocks →	FRACTEL, LLC	965H	GHOLSON	TX
2020-05-14	312-682	0–9 XXXall 10 · 4 holders which blocks →	NUSO, LLC	478J	CHICGOZN01	IL
2020-05-14	365-324	not yet reported which blocks →	Bell Mobility	6574	Hamilton	—
2020-05-14	424-446	0–9 XXXall 10 · 3 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - CA	7139	BEVERLYHLS	CA
2020-05-14	438-473	not yet reported which blocks →	Bell Mobility	6574	Montreal	—
2020-05-14	438-474	not yet reported which blocks →	Bell Mobility	6574	Montreal	—
2020-05-14	438-945	not yet reported which blocks →	TELUS Quebec	2243	Montreal	—
2020-05-14	438-946	not yet reported which blocks →	TELUS Quebec	2243	Montreal	—
2020-05-14	484-561	0–9 XXXall 10 · 3 holders which blocks →	OMNIPOINT COMMUNICATIONS ENTERPRISES, LP	6626	ALLENTOWN	PA
2020-05-14	548-522	not yet reported which blocks →	Rogers Communications Canada Inc. (Cable)	743B	Elora	—
2020-05-14	571-475	0–9 XXXall 10 · 4 holders which blocks →	VONAGE AMERICA LLC	197D	BRADDOCK	VA
2020-05-14	608-529	1XXX2XXX3XXX7XXX9XXX · 4 holders which blocks →	MCC TELEPHONY OF THE MIDWEST, LLC - WI	983F	CUBA CITY	WI
2020-05-14	608-681	1XXX which blocks →	MCC TELEPHONY OF THE MIDWEST, LLC - WI	983F	VIOLA	WI
2020-05-14	631-720	0–9 XXXwhole prefix which blocks →	OMNIPOINT COMMUNICATIONS, INC. - NY	6622	BRENTWOOD	NY
2020-05-14	636-319	0–9 XXXall 10 · 6 holders which blocks →	BRIGHTSPEED OF MISSOURI, LLC	9787	DARDENNE	MO
2020-05-14	872-263	0XXX1XXX2XXX3XXX4XXX8XXX9XXX · 4 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - IL	6115	CHICGOZN01	IL
2020-05-14	878-880	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - PA	547E	WASHINGTON	PA
2020-05-13	213-442	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	LSAN DA 01	CA
2020-05-13	223-235	0XXX1XXX2XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	ONVOY, LLC - PA	547E	LITTLESTN	PA
2020-05-13	223-236	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - PA	547E	MANCHESTER	PA
2020-05-13	223-245	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	ONVOY, LLC - PA	547E	ANNVILLE	PA
2020-05-13	272-256	0XXX1XXX2XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks →	ONVOY, LLC - PA	547E	NEWPHLDLPH	PA
2020-05-13	272-261	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks →	ONVOY, LLC - PA	547E	FRACKVILLE	PA
2020-05-13	272-271	0–9 XXXall 10 · 4 holders which blocks →	ONVOY, LLC - PA	547E	STROUDSBG	PA
2020-05-13	272-277	0–9 XXXall 10 · 5 holders which blocks →	ONVOY, LLC - PA	547E	MATAMORAS	PA
2020-05-13	343-347	not yet reported which blocks →	Fibernetics Corporation	464D	Arnprior	—
2020-05-13	343-348	not yet reported which blocks →	Fibernetics Corporation	464D	Cumberland	—
2020-05-13	343-349	not yet reported which blocks →	Fibernetics Corporation	464D	Gloucester	—

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.