Who called you?
(510) 402-4476
(510) 402-4476 is a landline / voip number from Frnk Main, CA on a prefix assigned to Bandwidth.com. Consumers have filed 2 complaints about it: 2 with the FTC's Do Not Call Registry, most recently on 2026-09-03.
Reported this month — 2 FTC complaints in the last 30 days, most recently 4 days ago, for unwanted calls.
Who called me from (510) 402-4476?
Carrier & location
- Type
- Landline / VoIP
- Assigned carrier
- Bandwidth.com
- Rate center
- Frnk Main, CA
- Prefix 510-402
- pooled block
- Area code
- 510 — California
- Time zone
- P
This prefix is assigned to a wireline or VoIP operator. VoIP lines are cheap to obtain in bulk, which makes them a common vehicle for spam and scam calling campaigns. Carrier assignment shows who the prefix was allocated to; numbers can be ported, and caller ID can be spoofed.
Complaint history
- FTC Do Not Call reports
- 22026-08-26 → 2026-09-03
- Community reports
- 0
FTC Do Not Call complaints (unverified consumer reports). Complaints run from 2026-08-26 to 2026-09-03.
Did this number call you? What was it?
What (510) 402-4476 was reported for
2 consumers reported this number to the FTC's National Do Not Call Registry between 2026-08-26 and 2026-09-03. Source: FTC Do Not Call complaints (unverified consumer reports).
Reported this month — 2 FTC complaints in the last 30 days, most recently 4 days ago, for unwanted calls.
FTC Do Not Call reports per month. Peak month: 2026-08 (1).
Reported for
The subject each consumer chose when filing. “Impostor” means the caller claimed to be a government agency, a business, or a relative.
- Dropped call / no message2 (100%)
Where it was reported
The state the consumer filed from — where the call landed, not where it originated.
- CA2 (100%)
Recent FTC reports naming (510) 402-4476
The most recent Do Not Call complaints, as filed: the date the consumer reported it, when they said the call happened, what it was about, and the city and state they filed from.
Reported in the last 7 days in area code 510 (California)
Other 510 numbers consumers reported to the FTC this week — useful when a campaign is rotating through an area code.
- (510) 833-93962 this week · No subject given
- (510) 240-88982 this week · No subject given
- (510) 969-82862 this week · Medical & prescriptions
- (510) 201-19131 this week · Debt reduction
- (510) 201-20211 this week · Debt reduction
- (510) 201-20481 this week · Debt reduction
- (510) 215-76861 this week · Medical & prescriptions
- (510) 254-31561 this week · No subject given
- (510) 440-25061 this week · Debt reduction
- (510) 440-27351 this week · No subject given
Source: FTC Do Not Call Reported Calls data, published every weekday. These are unverified consumer reports — they record what someone said about a call, not a finding against the number's owner. Caller ID is routinely spoofed, so a report can describe a call that only displayed this number. No reporter is identified beyond city and state.
Is (510) 402-4476 a scam? Community reports
No community reports for (510) 402-4476 yet. If this number called you, you're likely the first — leave a report below and help the next person who searches it.
Other reported numbers starting (510) 402
Robocall campaigns often rotate through a block of numbers on the same prefix — if several neighbors have complaints too, that's campaign behavior.
What to do next
Block it on Android or iPhone, turn on your carrier's free filtering, and report the call to the FCC and FTC — those complaints are the public record this page is built from.
Related
FAQs about (510) 402-4476
Who called me from (510) 402-4476?
(510) 402-4476 is a landline / voip number on a prefix assigned to Bandwidth.com, based in Frnk Main, CA. Consumers have filed 2 complaints about it — 2 with the FTC's Do Not Call Registry.
Is (510) 402-4476 a scam or robocall?
2 consumers reported (510) 402-4476 to the FTC. 2 of the reports were filed in the last 30 days, so the campaign is current. Complaints are a strong signal, not proof — never share personal or payment information with an unsolicited caller.
Should I call (510) 402-4476 back?
Reports about this number are current — the most recent FTC complaint was filed 2026-09-03 — so calling back is not advisable. As a general rule, only return a call you were expecting: a caller with legitimate business will leave a voicemail.
WhoCalledLookup is not a consumer reporting agency (FCRA). Community reports are user opinions, not statements of fact by this site; FTC and FCC complaints are unverified consumer submissions. Own this number? Dispute a listing.