Processes, requirements, and timelines for number porting in Austria.
This article explains how to submit a number porting request for the Austria, including the required information, approval process, and porting timelines.
Prerequisites
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Letter of Authorization (LOA) Signed by the authorized user and/or number owner. The information on the LOA must match the authorized user name and service address held by your current carrier.
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A scanned or electronic copy of the most recent phone bill (not older than 30 days) that clearly shows: Account number, Authorized user’s name and All numbers to be ported.
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Company name (registered in Austria) and full company address.
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Company Registration Document (Company Registration Extract or GISA document).
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Proof of Address (e.g. utility bill, rental agreement, energy bill, or any other third-party document). The company name and full address within the requested number area must be clearly visible. Company letterhead or stationery is not accepted as Proof of Address.
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OFN Number (Ortsfester Netzanschluss) – this is a fixed network connection number that can usually be found on an A1 Austria invoice for DSL, cable, or fiber services.
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The OFN is not required for Vienna DID numbers.
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If the customer does not yet have an internet service, they must request the OFN ("Ortsfester Netzanschlusspunkt") from A1 Austria.
• Confirmation whether the number(s) are part of a number block or extension range (Durchwahl).
• Name of the current (donor) provider.
• Signed and stamped Letter of Authorization (LOA) from an authorized company representative. -
The company stamp and a signature of the competent person who may transfer numbers on behalf of the company concerned or a valid power of attorney.
How to request number porting?
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Log in to https://dash.callto365.com
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Go to Porting → Porting Submission.
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Enter the number(s) or number ranges. For a single number, enter the same number in both Start of Series and End of Series.
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Click Next (»).
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Upload the LOA and the Phone Bill Copy
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Select your preferred porting date. This must be at least 10 working days from today (based on average lead time)
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Submit the request
The current provider will review the request and either approve or reject it. Once approved, the porting date will be confirmed
Availability
Geographic number porting
National number porting
Remarks
The average lead time is 10 working days. Requirements and timelines may change at any time based on country-specific rules and regulations.