Who called me from a 603 number?
Consumers named 447 different 603 numbers in 499 Do Not Call complaints filed with the US Federal Trade Commission between Jan 1, 2025 and Sep 14, 2026.
Numbers reported
447
Complaints
499
Recorded / robocall
54%
Most common
Other
Most-reported 603 numbers
- (603) 257-9035Dropped call or no message11
- (603) 292-7469Other9
- (603) 383-5462Dropped call or no message4
- (603) 570-4474Dropped call or no message4
- (603) 310-8356Vacation & timeshares3
- (603) 729-3874Other3
- (603) 864-6488Calls pretending to be government, businesses, or family and friends3
- (603) 212-1107Dropped call or no message2
- (603) 257-9012Other2
- (603) 288-6001Medical & prescriptions2
- (603) 314-8650Other2
- (603) 316-3465Calls pretending to be government, businesses, or family and friends2
- (603) 324-2846Dropped call or no message2
- (603) 324-2855Dropped call or no message2
- (603) 402-5050Other2
- (603) 441-7042Other2
- (603) 444-0408Other2
- (603) 475-5073Dropped call or no message2
- (603) 500-0090Calls pretending to be government, businesses, or family and friends2
- (603) 506-4666Other2
- (603) 509-9530Vacation & timeshares2
- (603) 514-6048Other2
- (603) 697-0007Other2
- (603) 697-8990Dropped call or no message2
- (603) 704-9112Dropped call or no message2
- (603) 768-1743Calls pretending to be government, businesses, or family and friends2
- (603) 800-0274Calls pretending to be government, businesses, or family and friends2
- (603) 887-4980Dropped call or no message2
- (603) 919-8470Dropped call or no message2
- (603) 202-4087Other1
- (603) 202-4810Dropped call or no message1
- (603) 202-7073Other1
- (603) 202-9205Calls pretending to be government, businesses, or family and friends1
- (603) 207-1036Dropped call or no message1
- (603) 207-4176Other1
- (603) 207-4470Other1
- (603) 207-4479Other1
- (603) 207-4491Vacation & timeshares1
- (603) 207-5901Calls pretending to be government, businesses, or family and friends1
- (603) 207-6097Calls pretending to be government, businesses, or family and friends1
- (603) 207-7615Other1
- (603) 208-1152Other1
- (603) 208-1222Calls pretending to be government, businesses, or family and friends1
- (603) 208-1837Other1
- (603) 208-3161No Subject Provided1
- (603) 208-3535No Subject Provided1
- (603) 212-0660Reducing your debt (credit cards, mortgage, student loans)1
- (603) 212-1445Reducing your debt (credit cards, mortgage, student loans)1
- (603) 212-1846Dropped call or no message1
- (603) 212-1899Dropped call or no message1
What to do if a 603 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 603 number a scam?
No. Area code 603 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 603 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 603 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.
