0421 018 671
0421018671 0421-018-671 +61421018671
Community spam and scam reports for 0421 018 671: 1 report from Australian users, last reported 16 Apr 2026.
Mixed signals
Opinions are split on this caller — read the reports below.
Users report uncertainty about this number's origin or purpose; insufficient data to characterize typical call behavior.
Across 04 (Mobile) on Phony, 1801 numbers have community reports and 84% lean spam — most often described as scam calls.
How would you classify this call?
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No additional details.
How to block 0421 018 671
If 0421 018 671 keeps calling and you'd rather not hear from them again, here's how to block it on the most common Australian devices and services. Tap a section to expand.
On iPhone
- Open Phone → Recents.
- Tap the (i) icon next to 0421 018 671.
- Scroll to the bottom and tap Block this Caller.
- Confirm Block Contact.
Blocked calls go straight to voicemail and SMS from the same number is silently dropped.
On Android
- Open Phone → Recents.
- Long-press 0421 018 671 (or tap it and choose Details).
- Choose Block / report spam.
- Confirm Block.
Wording varies between Samsung One UI, Google Pixel and Xiaomi MIUI, but every modern Android dialler has the option under the recent call's menu.
Network & regulatory
- Most Australian carriers (Telstra, Optus, Vodafone, TPG) can add nuisance numbers to a network-level block list. Call their support line and ask.
- NBN VoIP providers (Aussie Broadband, Superloop, MyRepublic, etc.) usually let you block per-number from your account portal.
- Register on the Do Not Call Register. Telemarketers are legally barred from calling registered numbers.
- Report scam calls to Scamwatch and the ACMA.
If 0421 018 671 claimed to be from your bank, the ATO or Australia Post, treat it as suspicious until you verify by calling the official number on that organisation's website.