NumberResearch Membership · Data 09/30/2026

Recent prefix assignments

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

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
Rogers Communications Canada Inc. (Wireless) 46
8X8, INC. 43
NEW CINGULAR WIRELESS PCS, LLC - DC 27
NEW CINGULAR WIRELESS PCS, LLC - IL 23
ONVOY, LLC - CA 19
New assignments by month Oct 2026 Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 472-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NC
— 472-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NC
— 472-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NC
— 472-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NC
— 472-555 not yet reported which blocks → MULTIPLE OCN LISTING MULT DIR ASST NC
— 472-611 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NC
— 472-700 not yet reported which blocks → NC
— 472-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NC
— 472-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NC
— 472-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX NC
— 472-950 not yet reported which blocks → NC
— 472-958 not yet reported which blocks → NC
— 472-959 not yet reported which blocks → NC
— 472-976 not yet reported which blocks → NC
— 475-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX CT
— 475-264 0–9 XXXall 10 · 4 holders which blocks → ONVOY, LLC - CT 639C DARIEN CT
— 475-311 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX CT
— 475-411 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX CT
— 475-449 0–9 XXXall 10 · 4 holders which blocks → OMNIPOINT COMMUNICATIONS, INC. - CT 6624 BRIDGEPORT CT
— 475-465 0–9 XXXall 10 · 5 holders which blocks → ONVOY, LLC - CT 639C OLDGRNWICH CT
— 475-511 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX CT
— 475-555 not yet reported which blocks → MULTIPLE OCN LISTING MULT DIR ASST CT
— 475-611 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX CT
— 475-700 not yet reported which blocks → CT
— 475-711 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX CT
— 475-811 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX CT
— 475-911 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX CT
— 475-950 not yet reported which blocks → CT
— 475-958 not yet reported which blocks → CT
— 475-959 not yet reported which blocks → CT
— 475-976 not yet reported which blocks → CT
— 478-201 0XXX7XXX8XXX9XXX · 2 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 MACON GA
— 478-204 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 XXXXXXXXXX GA
— 478-207 0XXX4XXX5XXX6XXX7XXX9XXX · 3 holders which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 MACON GA
— 478-211 not yet reported which blocks → MULTIPLE OCN LISTING MULT XXXXXXXXXX GA
— 478-214 not yet reported which blocks → SOUTHERN COMMUNICATIONS SERVICES, INC. 6744 MACON GA
— 478-216 0–9 XXXall 10 · 4 holders which blocks → LEVEL 3 COMMUNICATIONS, LLC - GA 6116 MACON GA
— 478-218 not yet reported which blocks → WINDSTREAM GEORGIA COMMUNICATIONS CORP. 4332 PERRY GA
— 478-219 0–9 XXXall 10 · 4 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E MACON GA
— 478-236 0–9 XXXall 10 · 6 holders which blocks → METROPCS, INC. 5562 WARNERRBNS GA
— 478-237 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 SWAINSBORO GA
— 478-239 0–9 XXXall 10 · 2 holders which blocks → BANDWIDTH.COM CLEC, LLC - GA 983E MACON GA
— 478-240 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 SANDERSVL GA
— 478-252 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 WADLEY GA
— 478-254 0–9 XXXall 10 · 2 holders which blocks → COMCAST IP PHONE, LLC 318J MACON GA
— 478-256 none assigned yet which blocks → METROPCS, INC. 5562 MACON GA
— 478-262 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → NEW CINGULAR WIRELESS PCS, LLC - GA 6214 MACON GA
— 478-272 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 DUBLIN GA
— 478-274 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 DUBLIN GA
— 478-275 not yet reported which blocks → BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL 9417 DUBLIN GA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/30/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.