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
2020-02-12	380-300	0–9 XXXall 10 · 5 holders which blocks →	FRACTEL, LLC	965H	HARRISBURG	OH
2020-02-12	380-600	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	LOCKBOURNE	OH
2020-02-12	380-900	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	COLUMBUS	OH
2020-02-12	386-465	0–9 XXXall 10 · 4 holders which blocks →	FRACTEL, LLC	965H	JENNINGS	FL
2020-02-12	430-268	0XXX1XXX4XXX7XXX8XXX · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - TX	004F	NEGLEY	TX
2020-02-12	469-792	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	GRANDPRARI	TX
2020-02-12	659-734	0–9 XXXall 10 · 6 holders which blocks →	PAETEC ITEL, LLC	829J	TUSCALOOSA	AL
2020-02-11	220-220	0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks →	FRACTEL, LLC	965H	ALEXANDRIA	OH
2020-02-11	220-226	0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks →	FRACTEL, LLC	965H	AMANDA	OH
2020-02-11	226-801	not yet reported which blocks →	Iristel Inc.	154E	Stratford	—
2020-02-11	226-829	not yet reported which blocks →	Iristel Inc.	154E	Wingham	—
2020-02-11	226-839	not yet reported which blocks →	Iristel Inc.	154E	Walkerton	—
2020-02-11	314-470	0–9 XXXall 10 · 3 holders which blocks →	ONVOY, LLC - MO	093F	OAKVILLE	MO
2020-02-11	346-421	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	ARCOLA	TX
2020-02-11	346-422	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	HSTNSUBURB	TX
2020-02-11	405-998	0–9 XXXall 10 · 3 holders which blocks →	HD CARRIER LLC	321J	OKLA CITY	OK
2020-02-11	430-202	0–9 XXXall 10 · 5 holders which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX	6506	SHERMAN	TX
2020-02-11	479-354	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	ROGERS	AR
2020-02-11	480-608	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - AZ	587F	PHOENIX	AZ
2020-02-11	506-516	not yet reported which blocks →	Iristel Inc.	154E	Woodstock	—
2020-02-11	507-714	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	MANKATO	MN
2020-02-11	539-549	0–9 XXXall 10 · 6 holders which blocks →	HD CARRIER LLC	321J	TULSA	OK
2020-02-11	579-899	not yet reported which blocks →	Iristel Inc.	154E	St-Lin	—
2020-02-11	681-279	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - DC	4036	HNTNGTNZN1	WV
2020-02-11	682-326	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	ARLINGTON	TX
2020-02-11	706-365	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	COLUMBUS	GA
2020-02-11	709-499	not yet reported which blocks →	Iristel Inc.	154E	St. Alban's	—
2020-02-11	772-300	0–9 XXXall 10 · 5 holders which blocks →	FRACTEL, LLC	965H	SEBASTIAN	FL
2020-02-11	772-946	0–9 XXXall 10 · 5 holders which blocks →	FRACTEL, LLC	965H	JENSEN BCH	FL
2020-02-11	782-312	not yet reported which blocks →	Iristel Inc.	154E	Shubenacadie	—
2020-02-11	878-768	2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks →	ONVOY, LLC - PA	547E	VOLANT	PA
2020-02-11	904-569	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - FL	937C	JACKSONVL	FL
2020-02-11	912-498	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	HINESVILLE	GA
2020-02-11	956-505	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	BROWNSVL	TX
2020-02-11	956-526	0–9 XXXall 10 · 3 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	DOLORES	TX
2020-02-10	209-413	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	MERCED	CA
2020-02-10	214-833	0–9 XXXwhole prefix which blocks →	ONVOY, LLC - TX	903C	DALLAS	TX
2020-02-10	219-259	0–9 XXXall 10 · 4 holders which blocks →	PEERLESS NETWORK OF INDIANA, LLC - IN	279F	MICHIGANCY	IN
2020-02-10	223-231	0–9 XXXall 10 · 4 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	HARISBGZN1	PA
2020-02-10	226-669	not yet reported which blocks →	IXICA Communications Inc.	812H	Guelph	—
2020-02-10	226-876	not yet reported which blocks →	IXICA Communications Inc.	812H	Acton	—
2020-02-10	239-326	0–9 XXXall 10 · 5 holders which blocks →	LEVEL 3 COMMUNICATIONS, LLC - FL	4802	NAPLES	FL
2020-02-10	256-696	0–9 XXXall 10 · 3 holders which blocks →	HD CARRIER LLC	321J	HUNTSVILLE	AL
2020-02-10	256-791	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - GA	6214	DECATUR	AL
2020-02-10	272-237	0–9 XXXall 10 · 4 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	BLOOMSBURG	PA
2020-02-10	309-561	0–9 XXXall 10 · 4 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	PEORIA	IL
2020-02-10	365-353	not yet reported which blocks →	IXICA Communications Inc.	812H	Niagara Falls	—
2020-02-10	365-377	not yet reported which blocks →	IXICA Communications Inc.	812H	Oshawa	—
2020-02-10	365-477	not yet reported which blocks →	IXICA Communications Inc.	812H	Whitby	—
2020-02-10	365-677	not yet reported which blocks →	IXICA Communications Inc.	812H	Hamilton	—

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.