Who called me from a 303 number?
Consumers named 1,155 different 303 numbers in 1,267 Do Not Call complaints filed with the US Federal Trade Commission between May 12, 2026 and Sep 14, 2026.
Numbers reported
1,155
Complaints
1,267
Recorded / robocall
56%
Most common
Other
Most-reported 303 numbers
- (303) 500-6199Dropped call or no message10
- (303) 500-6205Dropped call or no message9
- (303) 690-4868No Subject Provided9
- (303) 242-3254Other8
- (303) 500-1002Dropped call or no message6
- (303) 731-4804Dropped call or no message5
- (303) 348-9189Other4
- (303) 536-6505Other4
- (303) 558-6020Other4
- (303) 622-1763Other4
- (303) 970-1350Other4
- (303) 214-0044Dropped call or no message3
- (303) 255-5040Calls pretending to be government, businesses, or family and friends3
- (303) 482-9949Calls pretending to be government, businesses, or family and friends3
- (303) 709-4739Other3
- (303) 204-8443Dropped call or no message2
- (303) 214-1421Other2
- (303) 220-0772Other2
- (303) 223-2994Other2
- (303) 226-5958Calls pretending to be government, businesses, or family and friends2
- (303) 238-0104Computer & technical support2
- (303) 265-7600Reducing your debt (credit cards, mortgage, student loans)2
- (303) 269-0311Other2
- (303) 276-7627Other2
- (303) 276-8447Other2
- (303) 276-9410Other2
- (303) 276-9512Other2
- (303) 304-2149Dropped call or no message2
- (303) 309-0714Other2
- (303) 335-2733Energy, solar, & utilities2
- (303) 360-8419Other2
- (303) 385-0190Other2
- (303) 409-3906Dropped call or no message2
- (303) 493-0150Dropped call or no message2
- (303) 500-8598Other2
- (303) 502-8673Other2
- (303) 515-5369Reducing your debt (credit cards, mortgage, student loans)2
- (303) 518-2539Other2
- (303) 531-4706Home improvement & cleaning2
- (303) 531-6104Dropped call or no message2
- (303) 531-7007Other2
- (303) 535-2436Other2
- (303) 551-9613Other2
- (303) 558-8134Other2
- (303) 569-9204Other2
- (303) 578-0783Other2
- (303) 579-4163Reducing your debt (credit cards, mortgage, student loans)2
- (303) 588-3708Warranties & protection plans2
- (303) 593-1346Calls pretending to be government, businesses, or family and friends2
- (303) 622-1672Dropped call or no message2
What to do if a 303 number called you
- Do not call back and do not press any key to "opt out".
- Never give codes, card numbers or remote access to an inbound caller.
- Block the number and report the call at reportfraud.ftc.gov.
- Report it to GACS so other people searching this number find your warning — report a scam call.
Questions people ask
Is every call from a 303 number a scam?
No. Area code 303 is a normal US area code used by ordinary businesses and people. The numbers listed here are the ones consumers named in Do Not Call complaints — the area code itself tells you nothing about whether a specific call is legitimate.
Why do I keep getting calls from 303 numbers?
Scam dialers often spoof a local-looking prefix so the call appears familiar, and they rotate through numbers within the same area code. That is why blocking one number rarely stops the calls.
Should I call a 303 number back?
No. Returning a call to an unknown number can confirm your line is live or connect you to a premium-rate service. A genuine caller will leave a voicemail.
Where do these counts come from?
The US Federal Trade Commission publishes the phone numbers named in Do Not Call complaints as daily open-data files. GACS aggregates those files. These totals cover only the days we have processed, not all time.
Source: FTC Do Not Call complaint data. Complaints are unverified consumer allegations and caller ID is easily spoofed, so a listed number may belong to someone unconnected to the calls.
Authoritative sources
Independent primary sources used to check and corroborate the guidance on this page.
- US Federal Communications Commission — Robocalls
Regulator guidance on blocking unwanted calls and texts.
- US National Do Not Call Registry
Register a number and file telemarketing complaints.
- UK Ofcom — Nuisance Calls and Messages
UK regulator advice and reporting routes for scam calls and SMS.
