Scam calls from 605 numbers

Patterns documented by FTC/FCC · numbering data as of July 28, 2026.

If an unknown 605 number keeps calling, treat the area code as scenery: fraud operations spoof Sioux Falls numbers precisely because they look local and familiar. These are the documented patterns worth checking against.

If any of these match a call you received, report it: the FTC's fraud reports and the FCC's complaint center are the channels that feed enforcement.

Documented patterns behind 605-looking calls

Neighbor spoofing

A form of caller ID spoofing in which the falsified number matches your own area code and often your NXX prefix, so the call appears to come from a nearby household and feels safe to answer.

Signs: the incoming number shares your area code and first three digits of your local number; answering leads to a robocall, silence, or a sales/scam pitch. Full pattern →

Student loan 'forgiveness' scam

Callers promise loan forgiveness or special repayment programs for an upfront fee, or phish for your FSA ID — which lets them take over your federal student aid account.

Signs: upfront fees for 'enrollment' in forgiveness programs; requests for your fsa id username and password. Full pattern →

Package delivery callback scam

A call or voicemail claims a package could not be delivered and asks you to call back or 'press 1', leading to phishing for personal data or premium-rate charges. The same lure is common by text (smishing).

Signs: delivery notice for a package you never ordered; callback number that does not match the carrier's official lines. Full pattern →

Immigration (USCIS) impersonation

Callers impersonate USCIS or 'immigration officers', claim a problem with your status or paperwork, and demand payment or personal information under threat of deportation.

Signs: threats of deportation unless a 'fee' is paid by phone; spoofed caller id showing uscis numbers. Full pattern →

Amazon / big-brand imposter robocall

A robocall claims a large purchase or suspicious activity on your Amazon (or other retailer) account and asks you to 'press 1' to dispute it, connecting you to an agent who harvests card and login data.

Signs: recording about an order you never placed; transfer to an 'agent' who asks for card numbers or remote access. Full pattern →

Reporting channels

FAQ

Are all calls from 605 numbers scams?

No — 742 real prefixes serve Sioux Falls subscribers. The point is that the displayed code alone proves nothing either way; judge the call's content and verify independently.

Can I block the whole 605 area code?

Some phones and carrier apps allow prefix-based blocking, but scammers rotate codes, so blanket blocking mostly costs you legitimate calls. Silencing unknown callers works better.

Where do I report a scam call from a 605 number?

File at ReportFraud.ftc.gov (fraud and losses) and the FCC Consumer Complaint Center (spoofing and robocalls). Include the displayed number, date and what was said.