Recent prefix assignments

347 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/29/2026

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 28

Rogers Communications Canada Inc. (Wireless) 23

NEW CINGULAR WIRELESS PCS, LLC - IL 23

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

Quick find in this area code:

Recent NPA-NXX prefix assignments
Assigned	NPA-NXX	Thousands-blocks taken (last-4 opening)	Code holder	OCN	Rate center	State
2018-06-06	610-215	0–9 XXXall 10 · 6 holders which blocks →	CORE COMMUNICATIONS, INC. - PA	3806	PHPHSBZN30	PA
2018-06-06	631-710	0–9 XXXall 10 · 3 holders which blocks →	CABLEVISION LIGHTPATH, INC. - NY	7126	RONKONKOMA	NY
2018-06-06	647-314	not yet reported which blocks →	Bell Mobility	6574	Toronto	—
2018-06-06	774-362	0–9 XXXall 10 · 3 holders which blocks →	METROPCS, INC.	5562	ATTLEBORO	MA
2018-06-06	806-641	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks →	VONAGE AMERICA LLC	197D	AMARILLO	TX
2018-06-06	806-642	0–9 XXXall 10 · 3 holders which blocks →	VONAGE AMERICA LLC	197D	LUBBOCK	TX
2018-06-06	814-500	0–9 XXXall 10 · 6 holders which blocks →	CORE COMMUNICATIONS, INC. - PA	3806	HUNTINGDON	PA
2018-06-06	940-276	0–9 XXXall 10 · 4 holders which blocks →	VONAGE AMERICA LLC	197D	WICHITAFLS	TX
2018-06-05	302-842	0–9 XXXall 10 · 4 holders which blocks →	CORETEL DELAWARE, INC. - DE	1991	WILMINGTON	DE
2018-06-05	434-459	0–9 XXXall 10 · 5 holders which blocks →	VONAGE AMERICA LLC	197D	CHARLOTSVL	VA
2018-06-05	434-499	0–9 XXXall 10 · 5 holders which blocks →	VONAGE AMERICA LLC	197D	LYNCHBURG	VA
2018-06-05	445-500	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	CORE COMMUNICATIONS, INC. - PA	3806	PHPHSBZN40	PA
2018-06-05	445-600	0–9 XXXall 10 · 5 holders which blocks →	CORE COMMUNICATIONS, INC. - PA	3806	PHPHSBZN39	PA
2018-06-05	506-571	not yet reported which blocks →	Distributel	081E	Albert	—
2018-06-05	506-572	not yet reported which blocks →	Distributel	081E	Alma	—
2018-06-05	506-573	not yet reported which blocks →	Distributel	081E	Hillsborough	—
2018-06-05	506-574	not yet reported which blocks →	Distributel	081E	Port Elgin	—
2018-06-05	531-557	0–9 XXXwhole prefix which blocks →	QWEST CORPORATION	9631	OMAHA	NE
2018-06-05	563-526	0–9 XXXall 10 · 6 holders which blocks →	VONAGE AMERICA LLC	197D	DAVENPORT	IA
2018-06-05	581-554	not yet reported which blocks →	TELUS Quebec	8083	Saint-Henri-de-Levis	—
2018-06-05	581-730	not yet reported which blocks →	Bell Canada	984C	L'Islet	—
2018-06-05	581-731	not yet reported which blocks →	Bell Canada	984C	Saint-Francois	—
2018-06-05	629-233	0XXX3XXX · 2 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	FOSTERVL	TN
2018-06-05	779-256	0–9 XXXall 10 · 4 holders which blocks →	VONAGE AMERICA LLC	197D	ROCKFORD	IL
2018-06-05	782-983	not yet reported which blocks →	Distributel	081E	St. Margarets	—
2018-06-05	782-984	not yet reported which blocks →	Distributel	081E	Tangier	—
2018-06-05	782-992	not yet reported which blocks →	Distributel	081E	Wolfville	—
2018-06-05	782-993	not yet reported which blocks →	Distributel	081E	Advocate	—
2018-06-05	782-994	not yet reported which blocks →	Distributel	081E	Bass River	—
2018-06-05	782-995	not yet reported which blocks →	Distributel	081E	Blandford	—
2018-06-05	782-996	not yet reported which blocks →	Distributel	081E	Brookfield	—
2018-06-05	782-997	not yet reported which blocks →	Distributel	081E	Brooklyn	—
2018-06-05	782-998	not yet reported which blocks →	Distributel	081E	Caledonia	—
2018-06-05	782-999	not yet reported which blocks →	Distributel	081E	Chelsea	—
2018-06-05	910-945	0–9 XXXall 10 · 5 holders which blocks →	VONAGE AMERICA LLC	197D	WILMINGTON	NC
2018-06-05	930-203	0XXX1XXX3XXX8XXX9XXX · 2 holders which blocks →	VONAGE AMERICA LLC	197D	BLOOMINGTN	IN
2018-06-05	930-204	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	VONAGE AMERICA LLC	197D	EVANSVILLE	IN
2018-06-05	931-275	0XXX which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	BELFAST	TN
2018-06-04	223-800	0–9 XXXall 10 · 2 holders which blocks →	CORE COMMUNICATIONS, INC. - PA	3806	HARISBGZN1	PA
2018-06-04	228-260	0–9 XXXall 10 · 3 holders which blocks →	VONAGE AMERICA LLC	197D	BILOXI	MS
2018-06-04	267-842	0–9 XXXwhole prefix which blocks →	CORE COMMUNICATIONS, INC. - PA	3806	DOYLESTOWN	PA
2018-06-04	302-639	0–9 XXXall 10 · 3 holders which blocks →	CORETEL DELAWARE, INC. - DE	1991	NEW CASTLE	DE
2018-06-04	319-289	0–9 XXXall 10 · 6 holders which blocks →	VONAGE AMERICA LLC	197D	CEDAR RPDS	IA
2018-06-04	470-989	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA	6540	ATLANTA NE	GA
2018-06-04	551-270	0–9 XXXall 10 · 4 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ	6391	RAMSEY	NJ
2018-06-04	581-778	not yet reported which blocks →	Distributel	083E	Charny	—
2018-06-04	581-779	not yet reported which blocks →	Distributel	083E	St-Nicolas	—
2018-06-04	667-243	0–9 XXXall 10 · 2 holders which blocks →	CORE COMMUNICATIONS, INC.- MD	2593	OXFORD	MD
2018-06-04	667-345	0–9 XXXall 10 · 5 holders which blocks →	CORE COMMUNICATIONS, INC.- MD	2593	CATONSVL	MD
2018-06-04	667-364	0–9 XXXall 10 · 3 holders which blocks →	CORE COMMUNICATIONS, INC.- MD	2593	STEVENSVL	MD

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/29/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.