- Suspicious
- Uncertain
Community reports for 03 9100 4820 (0391004820): Contributors report suspicious calls asking personal questions without identifying the caller.
Personal Information Request Reports for 03 9100 4820
Two contributors have flagged 03 9100 4820 (also written as 0391004820) for suspicious behaviour. The most recent report describes a caller who phoned asking personal questions but could not or would not identify themselves, claiming no knowledge of the recipient's name. This approach is commonly used in social engineering scams where callers attempt to extract personal information for identity theft, account takeover, or targeted fraud.
The VIC-based local service number 0391004820 registered to NetSIP Pty Ltd has generated at least one confirmed interaction where the caller demonstrated suspicious knowledge-gathering tactics. One contributor appropriately ended the call when the caller's identity and purpose remained unclear.
What Callers from 03 9100 4820 Are Attempting
The reported call from 03 9100 4820 involved a male caller asking questions about the recipient without first establishing his identity or explaining his purpose. When challenged, the caller could not or did not provide the recipient's name, a significant red flag suggesting either a cold-call fishing expedition or deliberately evasive behaviour.
This pattern matches personal information harvesting tactics where callers use open-ended questions to identify what information targets already know, testing for exploitable details. Contributors receiving calls from 0391004820 should be alert to callers who ask questions before identifying themselves.
Call Patterns and Reporting Activity
Community reports for 03 9100 4820 span early February 2026, with one call answered and one missed call that left no voicemail. The brief reporting window and small number of flagged incidents suggest either recent activity or limited contributor awareness of the number. The answered call occurred during business hours (09:14 UTC on 15 February), while the missed call came early morning (05:35 UTC on 11 February), indicating the caller may be dialling across different times.
What to Do If You Receive a Call from 03 9100 4820
If 03 9100 4820 calls you:
- Do not: Answer questions or provide personal details until you have verified the caller's identity and legitimate purpose
- Do: Ask the caller to identify themselves, their organisation, and reason for calling before answering any questions
- Do: Hang up immediately if the caller cannot or will not provide clear identification
- Do: Never give out your name, address, date of birth, bank details, or other personal information to unknown callers
- Do: Ask for a callback number and independently verify it with the official organisation before returning the call
- Do: Block 0391004820 if the call repeats or feels suspicious
How to Report 03 9100 4820
If you receive suspicious calls from 03 9100 4820 asking for personal information, report the incident:
- Report to the Australian Communications and Media Authority (ACMA) via acma.gov.au or by calling 1300 850 115
- Lodge a report with Scamwatch at scamwatch.gov.au
- If the call involves identity theft or financial fraud, report to ReportCyber at cyber.gov.au
- Share your experience on Reverseau to help other Australians identify 0391004820
- Block the number on your phone to prevent future calls
Help others by sharing your experience with (03) 9100 4820!
WRITE A REVIEWRatings Distribution
What Our Users Reviewed
Guy called asking questions, didn't even know my name. gave him the cold shoulder
Call went to voicemail, no message
Help others by sharing your experience with (03) 9100 4820!
WRITE A REVIEWFrequently Asked Questions
Why did the caller from 03 9100 4820 not know my name?
The contributor reported that the caller from 03 9100 4820 (0391004820) could not or did not provide the recipient's name despite claiming to call them. This suggests either a cold-calling scam where the caller is targeting numbers randomly, or a deliberate evasion tactic where the caller is pretending not to know basic details about the target to see what information they'll volunteer.
Is 0391004820 a legitimate business number?
03 9100 4820 is registered as a local service number to NetSIP Pty Ltd in Victoria. However, legitimate businesses always identify themselves and explain their purpose before asking questions. The behaviour reported for 0391004820 (asking questions without clear identification) is inconsistent with standard professional practice and should be treated as suspicious.
What should I do if 03 9100 4820 calls and asks personal questions?
Do not answer any questions until you have verified the caller's identity. Ask 03 9100 4820 callers to provide their name, organisation, and reason for calling. If they cannot provide clear identification or become evasive, hang up immediately. Never volunteer personal information such as your address, date of birth, or financial details to unverified callers.
Is this number linked to identity theft?
One contributor reported that 03 9100 4820 (0391004820) called asking personal questions without identifying themselves, which is a known social engineering tactic. While only one confirmed interaction has been reported, the approach is commonly used in identity theft or account takeover schemes. If you believe your identity or accounts are at risk, contact your bank and relevant service providers immediately.
Why did the call from 0391004820 come early in the morning?
One missed call from 03 9100 4820 occurred at 05:35 in the morning, which is an unusual time for legitimate business calls. Scammers and harassing callers often use irregular hours to reach people when they are less alert or more likely to answer without screening calls carefully. This unusual timing combined with the suspicious behaviour on the answered call suggests 0391004820 should be avoided.
How can I block 03 9100 4820 on my phone?
Most Australian phones allow you to block numbers through settings. Add 0391004820 to your blocked contacts list in your phone's settings or call screening app. You can also contact your phone provider to request blocking of 03 9100 4820 at the network level. If you report the number to ACMA at acma.gov.au, they track patterns of suspicious calls and may take action against repeat offenders using 0391004820.