Use the ACMA Number Register search to look up Australian phone-number allocations, holders and transfer history. This official tool lets you search by exact number, number range or phone word and returns allocation and current-holder details useful for due diligence, telecom research, compliance checks and debugging numbering issues.

How you can use it

• Search by exact number, by a numeric range (From / To) or by phone word.
• Use wildcards (*) at the start and/or end of search terms for partial matches (supported on allocatee, current holder and EROU holder fields).
• Filter results by allocation date range, service type or number status, or limit to “smartnumber” entries.
• Sort results by any column and page through large result sets, or download the full Register of Numbers or the CSP list for offline analysis.

Information you can gather

• Service type (e.g., mobile, fixed, special services)
• Prefix and number length
• Number range (From / To) and quantity in that allocation
• Status of the allocation (allocated, reserved, etc.)
• Allocatee (who the block was allocated to) and allocation date
• Current holder (who currently holds the number) and latest transfer date
• Current EROU holder and EROU assignment date
• SZU (as shown in the register)
• Phone-word matches where applicable

Notes and tips

• Large searches can return many rows; if you need an accurate total count use additional filters or download the full register.
• Results are sortable and paginated; adjust “rows per page” for easier browsing.
• The site also offers full downloads (current snapshot and legacy format) and a dedicated CSP list for carrier-level details.