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605 Area Code — Scam Calls, Location & Who's Calling

Area code 605 serves South Dakota in the CM time zone, in service since 1947. The FCC has 1,804 unwanted-call complaints against 1,434 different 605 numbers on record. Look up the exact number that called you below.

Most-reported 605 numbers

Ranked by FCC unwanted-call complaints. Click a number for its full report.

605 unwanted-call complaints, last 12 months

Monthly FCC complaint volume against 605 numbers. Spikes usually mark an active robocall campaign cycling through the code.

Carriers operating in 605

Carriers assigned to 605 prefixes that visitors have looked up so far — resolved from official NPA-NXX assignment records.

  • QWEST CORPORATIONI · 11 prefixes
  • CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SDWireless · 6 prefixes
  • NEW CINGULAR WIRELESS PCS, LLC - ILWireless · 5 prefixes
  • BANDWIDTH.COM CLEC, LLC - SDC · 3 prefixes
  • LEVEL 3 COMMUNICATIONS, LLC - SDC · 3 prefixes
  • PAETEC ITEL, LLCC · 2 prefixes
  • AERIAL COMMUNICATIONS, INC.Wireless · 2 prefixes
  • INTERSTATE TELECOM COOP, INC. - SDI · 1 prefix

About area code 605

Serves
South Dakota
Time zone
CM
In service since
1947-01-01
Overlay
No

Source: NANPA numbering records, refreshed weekly.

Spam calls from 605? What to know

Seeing repeated missed calls from 605 numbers you don't recognize is the classic signature of neighbor-spoofing robocall campaigns. The caller isn't necessarily in South Dakota — spoofing software displays whatever digits the campaign chooses. Never call unknown numbers back; look them up first, and report unwanted calls to the FCC to build the public record.

Area code 605 FAQs

Where is area code 605?

Area code 605 serves South Dakota, in the CM time zone. It has been in service since 1947.

Why do I keep getting calls from 605 numbers?

Robocallers use "neighbor spoofing" — displaying a number with a local area code to make you more likely to answer. A call showing area code 605 may not originate from South Dakota at all. Look up the full 10-digit number on this site to see its complaint history before calling back.

Are 605 numbers safe to call back?

Area codes themselves are neither safe nor unsafe — 605 contains millions of legitimate lines alongside any spoofed or spam numbers. The FCC has logged 1,804 unwanted-call complaints against 1,434 distinct 605 numbers in our current data window. Check the specific number's report page before returning a missed call.