Recent prefix assignments

0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026

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, all time — NPA 224

COMCAST IP PHONE, LLC 16

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
2021-08-10	224-398	0–9 XXXall 10 · 2 holders which blocks →	COMCAST IP PHONE, LLC	318J	ARLIGTNHTS	IL
2015-08-28	224-985	0–9 XXXall 10 · 5 holders which blocks →	COMCAST IP PHONE, LLC	318J	PARK RIDGE	IL
2015-03-24	224-530	0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	COMCAST IP PHONE, LLC	318J	PLATO CTR	IL
2015-03-06	224-908	0–9 XXXall 10 · 5 holders which blocks →	COMCAST IP PHONE, LLC	318J	FOX LAKE	IL
2014-10-27	224-714	0–9 XXXall 10 · 5 holders which blocks →	COMCAST IP PHONE, LLC	318J	EVANSTON	IL
2014-09-16	224-470	0–9 XXXall 10 · 6 holders which blocks →	COMCAST IP PHONE, LLC	318J	SKOKIE	IL
2013-04-30	224-408	0–9 XXXall 10 · 6 holders which blocks →	COMCAST IP PHONE, LLC	318J	WILMETTE	IL
2013-04-23	224-326	0–9 XXXall 10 · 3 holders which blocks →	COMCAST IP PHONE, LLC	318J	NORTHBROOK	IL
2013-01-03	224-318	0–9 XXXall 10 · 5 holders which blocks →	COMCAST IP PHONE, LLC	318J	ARLIGTNHTS	IL
2007-06-07	224-475	0–9 XXXall 10 · 3 holders which blocks →	COMCAST IP PHONE, LLC	318J	MUNDELEIN	IL
2006-10-12	224-338	0XXX1XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks →	COMCAST IP PHONE, LLC	318J	ROUND LAKE	IL
2006-09-15	224-676	0–9 XXXall 10 · 7 holders which blocks →	COMCAST IP PHONE, LLC	318J	WHEELING	IL
2005-02-28	224-757	0–9 XXXall 10 · 6 holders which blocks →	COMCAST IP PHONE, LLC	318J	ROUND LAKE	IL
2005-02-24	224-535	0XXX1XXX2XXX6XXX7XXX8XXX9XXX · 5 holders which blocks →	COMCAST IP PHONE, LLC	318J	ELGIN	IL
2005-02-17	224-333	0–9 XXXall 10 · 7 holders which blocks →	COMCAST IP PHONE, LLC	318J	ALGONQUIN	IL
2005-02-02	224-610	0–9 XXXall 10 · 4 holders which blocks →	COMCAST IP PHONE, LLC	318J	WAUKEGAN	IL

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.