WhoCalledLookupUS

321 Area Code: Cocoa, Florida

Area code 321 serves Cocoa, Melbourne and Orlando, Florida in the Eastern time zone, in service since 1999. Consumers have filed 9,129 unwanted-call complaints against 6,187 different 321 numbers, 1,189 of them with the FTC in the last 30 days. Look up the exact number that called you below.

Area code 321 at a glance

State
Florida
Main cities
Cocoa, Melbourne, Orlando, Eau Gallie, Titusville, Cocoa Beach + 13 more
Counties
Brevard County, Orange County, Osceola County, Seminole County + 1 more
Local time
—Eastern
In service since
November 1, 1999
Overlay of
407
Local dialing
10 digits (area code + number)
Exchanges
21 rate centers, 502 prefixes

Sources: NANPA area code and central office code records (refreshed weekly); cities and counties matched from US Census Bureau and USGS place names.

Map of Florida with the 5 counties served by area code 321 shaded, and Cocoa, Melbourne and Orlando marked
Shaded: counties with exchanges in area code 321. Dots: the largest exchanges. Coverage is approximate: area codes follow exchange boundaries, not county lines. Built from NANPA prefix assignments and US Census Bureau boundaries.
6,187
Reported numbers
4,347
FTC DNC reports
4,782
FCC complaints
1,189
Last 30 days (FTC)

Most-reported 321 numbers

Ranked by FTC Do Not Call complaints this month, then all-time FTC and FCC complaints. Only numbers with enough complaints for a full report page are listed. Click one for what it was reported for and where.

What calls from 321 numbers are about

4,347 FTC Do Not Call complaints about 321 numbers since Jul 24. The most common named subject is debt-relief pitches, at 28% of complaints (91% of those were recorded messages). Overall, 84% of callers who answered said the call was a robocall.

FTC complaint subjects

  • Other / unspecified1,40632%
  • Debt reduction1,21128%
  • No subject given97222%
  • Impostor (government, business, family)3247%
  • Medical & prescriptions1664%
  • Vacation & timeshares882%
  • Dropped call / no message852%

FCC complaints by call type, last 2 years

  • Live Voice18445%
  • Prerecorded Voice15438%
  • Text Message7117%

17% of recent FCC complaints about 321 numbers are about text messages, not calls.

When 321 spam calls come in

28% of complaints that give a call time describe calls between 11am and 2pm. 96% came Monday to Friday, most on Tuesdays, the pattern of call-center robocall campaigns that run on business hours. Times are as consumers reported them to the FTC.

By hour of the day

By day of the week

Is it getting worse?

1,171 FTC complaints about 321 numbers in the last four weeks, down 28% on the four weeks before. FCC complaints about 321 numbers peaked in 2015 (758); the FTC's daily Do Not Call data has carried most of the volume since mid-2026.

FTC complaints per week

FCC complaints per year

Years shown as '15 to '26; the current year is partial.

Who gets these calls

53% of the FTC complaints about 321 numbers came from Florida residents, but only 42% from people with 321 numbers themselves. The calls are mostly regional rather than aimed at 321 phones specifically.

Where complainants live

  • Florida2,30853%
  • California3528%
  • Illinois1944%
  • Georgia1513%
  • Massachusetts1032%

What people with 321 numbers report

People whose own number starts with 321 filed 3,853 FTC complaints since Jul 24. 47% were about calls showing another 321 number. The most common named subject was debt-relief pitches.

Area codes on the calls they reported

  • 321 (same code)1,82947%
  • 866 (toll-free)1033%
  • 833 (toll-free)912%
  • 877 (toll-free)902%
  • 855 (toll-free)872%

Likely campaigns using 321 numbers

Groups of numbers that drew the same FTC complaint in the same pattern over the last 60 days. The grouping is statistical and doesn't identify who is calling.

Busiest 321 prefixes this month

FTC complaints in the last 30 days, grouped by the first six digits. When one prefix collects complaints about many different numbers, a campaign is usually cycling through that block. The carrier is who NANPA assigned the prefix to, not who made the calls.

PrefixComplaintsNumbers
(321) 395-xxxxcampaign19612
(321) 525-xxxx3735
(321) 988-xxxxcampaign2726
(321) 866-xxxx274
(321) 499-xxxx225

Carriers operating in 321

NANPA has assigned 502 321 prefixes (NPA-NXX central-office codes) across 21 rate centers: 39% to wireless carriers, 60% to landline and VoIP operators; 83% are pooled blocks shared by several carriers. 13 prefixes were assigned in the last 12 months (newest 2026-10-19). The carrier holding a prefix is who the number was issued through. It says nothing about who is calling, since caller ID is routinely spoofed.

CarrierTypePrefixes
BellSouth (AT&T)Incumbent landline (ILEC)70(14%)
Omnipoint Miami E License, LLCWireless60(12%)
AT&T Mobility (New Cingular Wireless PCS)Wireless53(11%)
PAETEC (Windstream)Competitive / VoIP (CLEC)46(9%)
Onvoy (Sinch)Competitive / VoIP (CLEC)39(8%)
Metro by T-Mobile (MetroPCS)Wireless38(8%)
Level 3 (Lumen)Competitive / VoIP (CLEC)31(6%)
Verizon Wireless (Cellco Partnership)Wireless26(5%)
Bandwidth.comCompetitive / VoIP (CLEC)16(3%)
Fractel, LLCCompetitive / VoIP (CLEC)15(3%)
Aerial Communications, INC.Wireless12(2%)
Level 3 (Lumen)Competitive / VoIP (CLEC)12(2%)

Largest rate centers (exchanges) by prefixes: Cocoa (164), Melbourne (85), Orlando (71), Eau Gallie (36), Titusville (35), Cocoa Beach (26), Winter Park (25), Sanford (14), Kissimmee (13), Oviedo (5). Source: NANPA Central Office Code Utilized Assignments (public, refreshed weekly).

What to do about calls from 321 numbers

Before you call back

  • Debt reduction is the top named complaint here. Don't pay upfront fees for debt relief; the FTC's Telemarketing Sales Rule bans them. Talk to your lender or a nonprofit credit counselor instead. Read about debt-relief robocalls.
  • Look up the full number above. A missed call from 321 with no voicemail is usually a robocall; anyone who needs you will leave a message.
  • Block repeat callers: iPhone, Android, or your carrier's free filter (Verizon, AT&T, T-Mobile).

Report it in Florida

  • Unwanted sales calls and robocalls: donotcall.gov (FTC). Scams and fraud: ReportFraud.ftc.gov.
  • Spoofing, texts and call-blocking problems: FCC consumer complaints.
  • State complaints: Florida Attorney General.
  • Florida is one of the states that maintains its own Do Not Call registry alongside the federal National Do Not Call Registry, so telemarketers calling Florida numbers are expected to check both lists. Registering on the federal list at donotcall.gov is free and never expires; the state list is administered separately and may have its own registration process and renewal period.

Your FTC and FCC reports are published (without your name or number) in the datasets this page is built from. How to report unwanted calls.

Area code 321: questions answered from the data

Where is area code 321?

Area code 321 serves Cocoa, Melbourne and Orlando, Florida, covering Brevard County, Orange County and Osceola County and 2 more counties. It has been in service since November 1, 1999.

What time zone is area code 321 in?

Area code 321 is in the Eastern time zone (UTC−5, or UTC−4 during daylight saving time). The current local time is shown at the top of this page.

What are calls from 321 numbers usually about?

Since Jul 24, consumers filed 4,347 FTC Do Not Call complaints about 321 numbers. The most common named subject was debt-relief pitches: 28% of complaints, 91% of them recorded messages. Across all subjects, 84% of callers who answered the question said the call was a robocall.

When do 321 spam calls happen?

28% of the complaints that give a call time describe calls between 11am and 2pm, and 96% came on weekdays, most often on Tuesday. Times are as consumers reported them.

Are calls from 321 numbers really local?

Not necessarily. 53% of the FTC complaints about 321 numbers came from Florida residents, but only 42% from people with 321 numbers themselves. The calls are mostly regional rather than aimed at 321 phones specifically.

Are 321 robocalls increasing?

In the four weeks to Oct 20, consumers filed 1,171 FTC complaints about 321 numbers, 28% fewer than the four weeks before.

How do I report a 321 scam call in Florida?

Report unwanted sales calls and robocalls to the FTC at donotcall.gov, and scams to ReportFraud.ftc.gov. The FCC takes complaints at consumercomplaints.fcc.gov. In Florida, the Florida Attorney General also handles consumer complaints about scam calls. Reports feed the public data this page is built from.

Other Florida area codes

Sources: FTC Do Not Call complaints (unverified consumer reports), published every weekday and available here from Jul 24; FCC Consumer Complaint Data, public record, imported nightly; NANPA numbering records. A number appearing here means consumers reported calls that displayed it. Caller ID can be spoofed.