NumberResearch Membership · Data 09/19/2026

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 647
Bell Mobility 160
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
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
2019-12-13 647-565 not yet reported which blocks → Bell Mobility 6574 Toronto —
2019-12-13 647-579 not yet reported which blocks → Bell Mobility 6574 Toronto —
2019-12-12 647-541 not yet reported which blocks → Bell Mobility 6574 Toronto —
2019-12-02 647-564 not yet reported which blocks → Bell Mobility 6574 Toronto —
2019-11-18 647-604 not yet reported which blocks → Bell Mobility 6574 Toronto —
2019-11-18 647-605 not yet reported which blocks → Bell Mobility 6574 Toronto —
2019-10-16 647-482 not yet reported which blocks → Bell Mobility 6574 Toronto —
2019-10-16 647-613 not yet reported which blocks → Bell Mobility 6574 Toronto —
2019-10-10 647-481 not yet reported which blocks → Bell Mobility 6574 Toronto —
2019-09-23 647-353 not yet reported which blocks → Bell Mobility 6574 Toronto —
2019-09-23 647-672 not yet reported which blocks → Bell Mobility 6574 Toronto —
2019-09-20 647-446 not yet reported which blocks → Bell Mobility 6574 Toronto —
2019-09-19 647-445 not yet reported which blocks → Bell Mobility 6574 Toronto —
2019-09-19 647-603 not yet reported which blocks → Bell Mobility 6574 Toronto —
2019-09-06 647-597 not yet reported which blocks → Bell Mobility 6574 Toronto —
2019-07-19 647-614 not yet reported which blocks → Bell Mobility 6574 Toronto —
2019-06-13 647-596 not yet reported which blocks → Bell Mobility 6574 Toronto —
2019-06-11 647-443 not yet reported which blocks → Bell Mobility 6574 Toronto —
2019-06-11 647-595 not yet reported which blocks → Bell Mobility 6574 Toronto —
2019-06-10 647-441 not yet reported which blocks → Bell Mobility 6574 Toronto —
2019-06-10 647-442 not yet reported which blocks → Bell Mobility 6574 Toronto —
2019-05-29 647-615 not yet reported which blocks → Bell Mobility 6574 Toronto —
2019-05-27 647-440 not yet reported which blocks → Bell Mobility 6574 Toronto —
2019-05-23 647-432 not yet reported which blocks → Bell Mobility 6574 Toronto —
2019-05-21 647-431 not yet reported which blocks → Bell Mobility 6574 Toronto —
2019-05-21 647-433 not yet reported which blocks → Bell Mobility 6574 Toronto —
2019-05-21 647-434 not yet reported which blocks → Bell Mobility 6574 Toronto —
2019-03-29 647-582 not yet reported which blocks → Bell Mobility 6574 Toronto —
2019-03-29 647-583 not yet reported which blocks → Bell Mobility 6574 Toronto —
2019-03-29 647-585 not yet reported which blocks → Bell Mobility 6574 Toronto —
2019-03-28 647-586 not yet reported which blocks → Bell Mobility 6574 Toronto —
2019-03-28 647-587 not yet reported which blocks → Bell Mobility 6574 Toronto —
2019-03-25 647-421 not yet reported which blocks → Bell Mobility 6574 Toronto —
2019-03-25 647-422 not yet reported which blocks → Bell Mobility 6574 Toronto —
2019-03-25 647-423 not yet reported which blocks → Bell Mobility 6574 Toronto —
2019-03-25 647-594 not yet reported which blocks → Bell Mobility 6574 Toronto —
2019-03-22 647-653 not yet reported which blocks → Bell Mobility 6574 Toronto —
2019-02-12 647-593 not yet reported which blocks → Bell Mobility 6574 Toronto —
2019-02-11 647-397 not yet reported which blocks → Bell Mobility 6574 Toronto —
2018-12-19 647-658 not yet reported which blocks → Bell Mobility 6574 Toronto —
2018-09-19 647-315 not yet reported which blocks → Bell Mobility 6574 Toronto —
2018-08-27 647-396 not yet reported which blocks → Bell Mobility 6574 Toronto —
2018-08-13 647-395 not yet reported which blocks → Bell Mobility 6574 Toronto —
2018-07-19 647-312 not yet reported which blocks → Bell Mobility 6574 Toronto —
2018-07-19 647-322 not yet reported which blocks → Bell Mobility 6574 Toronto —
2018-07-17 647-319 not yet reported which blocks → Bell Mobility 6574 Toronto —
2018-07-17 647-320 not yet reported which blocks → Bell Mobility 6574 Toronto —
2018-07-03 647-659 not yet reported which blocks → Bell Mobility 6574 Toronto —
2018-06-29 647-301 not yet reported which blocks → Bell Mobility 6574 Toronto —
2018-06-28 647-394 not yet reported which blocks → Bell Mobility 6574 Toronto —

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.