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 317

BANDWIDTH.COM CLEC, LLC - IN 22

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
2021-07-01	317-799	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IN	105F	DANVILLE	IN
2018-08-27	317-785	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IN	105F	WESTFIELD	IN
2017-02-24	317-349	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IN	105F	CICERO	IN
2016-07-21	317-552	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IN	105F	INDIANAPLS	IN
2015-07-22	317-749	0–9 XXXall 10 · 2 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IN	105F	INDIANAPLS	IN
2015-06-12	317-743	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IN	105F	GREENWOOD	IN
2015-05-13	317-659	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IN	105F	FAIRLAND	IN
2015-05-13	317-932	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IN	105F	OAKLANDON	IN
2015-04-23	317-934	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IN	105F	CUMBERLAND	IN
2014-11-14	317-961	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IN	105F	MOORESVL	IN
2014-09-17	317-983	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IN	105F	INDIANAPLS	IN
2014-09-12	317-316	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IN	105F	NOBLESVL	IN
2014-06-17	317-763	0–9 XXXall 10 · 6 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IN	105F	WESTFIELD	IN
2014-05-02	317-360	0–9 XXXall 10 · 5 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IN	105F	GREENWOOD	IN
2011-05-10	317-643	0–9 XXXwhole prefix which blocks →	BANDWIDTH.COM CLEC, LLC - IN	105F	INDIANAPLS	IN
2011-04-04	317-678	0–9 XXXall 10 · 6 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IN	105F	NOBLESVL	IN
2010-09-27	317-597	0–9 XXXall 10 · 6 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IN	105F	OAKLANDON	IN
2010-09-17	317-550	0–9 XXXall 10 · 3 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IN	105F	INDIANAPLS	IN
2009-11-04	317-721	0–9 XXXall 10 · 2 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IN	105F	INDIANAPLS	IN
2008-05-13	317-683	0–9 XXXall 10 · 4 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IN	105F	INDIANAPLS	IN
—	317-343	0–9 XXXall 10 · 7 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IN	105F	CARMEL	IN
—	317-762	0–9 XXXall 10 · 2 holders which blocks →	BANDWIDTH.COM CLEC, LLC - IN	105F	INDIANAPLS	IN

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.