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
2018-03-22	579-318	not yet reported which blocks →	Distributel	083E	Vercheres	—
2018-03-22	650-880	0–9 XXXall 10 · 5 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC	6010	MT VIEW	CA
2018-03-22	707-699	0–9 XXXall 10 · 5 holders which blocks →	COMCAST PHONE OF CALIFORNIA, LLC	394L	NAPA	CA
2018-03-22	720-827	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	DENVER	CO
2018-03-22	737-471	0–9 XXXall 10 · 2 holders which blocks →	SOUTHWESTERN BELL	9533	AUSTIN	TX
2018-03-22	765-217	0–9 XXXall 10 · 4 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN	7440	YORKTOWN	IN
2018-03-22	805-519	0–9 XXXall 10 · 3 holders which blocks →	T-MOBILE USA, INC.	6529	ARROYOGRND	CA
2018-03-22	843-829	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - SC	077F	NEWTONVL	SC
2018-03-22	843-894	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - SC	077F	PAWLEYS IS	SC
2018-03-22	940-253	0–9 XXXall 10 · 6 holders which blocks →	COMCELL, INC. - TX	162J	BOWIE	TX
2018-03-22	951-822	0–9 XXXall 10 · 2 holders which blocks →	METROPCS NETWORKS, LLC	899D	PERRIS	CA
2018-03-21	214-897	0–9 XXXall 10 · 2 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	LEWISVILLE	TX
2018-03-21	346-325	0–9 XXXall 10 · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	SATSUMA	TX
2018-03-21	365-210	not yet reported which blocks →	Distributel	082E	Ancaster	—
2018-03-21	365-212	not yet reported which blocks →	Distributel	082E	Binbrook	—
2018-03-21	365-214	not yet reported which blocks →	Distributel	082E	Dundas	—
2018-03-21	365-215	not yet reported which blocks →	Distributel	082E	Hagersville	—
2018-03-21	365-216	not yet reported which blocks →	Distributel	082E	Mount Hope	—
2018-03-21	365-218	not yet reported which blocks →	Distributel	082E	Stoney Creek	—
2018-03-21	365-219	not yet reported which blocks →	Distributel	082E	West Lincoln	—
2018-03-21	365-221	not yet reported which blocks →	Distributel	082E	Winona	—
2018-03-21	440-589	0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	CHAGRINFLS	OH
2018-03-21	469-439	0–9 XXXwhole prefix which blocks →	NEW CINGULAR WIRELESS PCS, LLC - IL	6534	GRANDPRARI	TX
2018-03-21	479-332	0–9 XXXall 10 · 6 holders which blocks →	T-MOBILE USA, INC.	6529	FAYETTEVL	AR
2018-03-21	479-334	0–9 XXXall 10 · 7 holders which blocks →	T-MOBILE USA, INC.	6529	SPRINGDALE	AR
2018-03-21	501-273	0–9 XXXall 10 · 6 holders which blocks →	T-MOBILE USA, INC.	6529	CONWAY	AR
2018-03-21	629-218	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - TN	124F	MURFREESBO	TN
2018-03-21	786-588	0–9 XXXwhole prefix which blocks →	BANDWIDTH.COM CLEC, LLC - FL	982E	KEYS	FL
2018-03-21	956-359	0–9 XXXall 10 · 5 holders which blocks →	MCIMETRO ACCESS TRANSMISSION SERVICES LLC	7229	MCALLEN	TX
2018-03-20	208-913	0XXX1XXX2XXX3XXX5XXX7XXX8XXX9XXX · 6 holders which blocks →	COMCAST IP PHONE, LLC	318J	KETCHUM	ID
2018-03-20	226-405	not yet reported which blocks →	Distributel	082E	Bothwell	—
2018-03-20	226-410	not yet reported which blocks →	Distributel	082E	Thamesville	—
2018-03-20	226-412	not yet reported which blocks →	Distributel	082E	Merlin	—
2018-03-20	226-413	not yet reported which blocks →	Distributel	082E	Dresden	—
2018-03-20	226-414	not yet reported which blocks →	Distributel	082E	Tilbury	—
2018-03-20	226-415	not yet reported which blocks →	Distributel	082E	Highgate	—
2018-03-20	226-416	not yet reported which blocks →	Distributel	082E	Blenheim	—
2018-03-20	226-418	not yet reported which blocks →	Distributel	082E	Ridgetown	—
2018-03-20	226-419	not yet reported which blocks →	Distributel	082E	Wallaceburg	—
2018-03-20	423-541	0–9 XXXall 10 · 2 holders which blocks →	VONAGE AMERICA LLC	197D	CHATTNOOGA	TN
2018-03-20	430-242	0–9 XXXall 10 · 5 holders which blocks →	TELEPORT COMMUNICATIONS AMERICA, LLC - TX	7148	GREENVILLE	TX
2018-03-20	469-456	0–9 XXXall 10 · 2 holders which blocks →	CHARTER IP ENABLED SERVICES, LLC	792K	ENNIS	TX
2018-03-20	470-450	0–9 XXXall 10 · 3 holders which blocks →	VONAGE AMERICA LLC	197D	ATLANTA NE	GA
2018-03-20	470-829	0–9 XXXwhole prefix which blocks →	CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA	6540	ATLANTA	GA
2018-03-20	513-514	0–9 XXXall 10 · 6 holders which blocks →	WIDE VOICE, LLC - OH	765H	CINCINNATI	OH
2018-03-20	562-702	0–9 XXXall 10 · 3 holders which blocks →	METROPCS NETWORKS, LLC	899D	ALAMITOS	CA
2018-03-20	581-559	not yet reported which blocks →	Distributel	083E	Ferland	—
2018-03-20	581-564	not yet reported which blocks →	Distributel	083E	Jonquiere	—
2018-03-20	581-565	not yet reported which blocks →	Distributel	083E	La Baie (Chicoutimi Co.)	—
2018-03-20	581-566	not yet reported which blocks →	Distributel	083E	Laterriere	—

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.