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840 area code: where it is and which numbers are reported

840 covers San Bernardino, Rancho Cucamonga and Ontario in California. 177 numbers in it drew 241 complaints between Oct 2, 2025 and Oct 31, 2026.

About area code 840

LocationCalifornia
Main citiesSan Bernardino, Rancho Cucamonga, Ontario, Fontana
Local time now
Time zonePacific
In service since2021
Shares its area with909
Numbers reported177
Complaints241
Most reported asDebt reduction, other, imposters

Reported 840 numbers

Most reported first. A number links to its own page once it has complaints from two or more days.

(840) 263-7620 55 complaints Debt reductionlast Sep 23, 2026
(840) 201-4173 3 complaints Otherlast Sep 23, 2026
(840) 282-9129 2 complaints Otherlast Oct 23, 2026
(840) 240-6119 2 complaints Debt reductionlast Oct 21, 2026
(840) 221-9225 2 complaints Prerecorded callslast Sep 30, 2026
(840) 356-7638 2 complaints Prerecorded callslast Sep 28, 2026
(840) 242-2385 2 complaints Otherlast Sep 17, 2026
(840) 221-9251 2 complaints Otherlast Jul 28, 2026
(840) 221-8887 2 complaints Otherlast Jul 24, 2026
(840) 201-1318 2 complaints Debt reductionlast Jul 20, 2026
(840) 600-0085 1 complaint Prerecorded callslast Oct 29, 2026
(840) 253-8297 1 complaint Textslast Oct 28, 2026
(840) 842-1619 1 complaint Medicallast Oct 28, 2026
(840) 218-1170 1 complaint Warrantieslast Oct 27, 2026
(840) 268-6312 1 complaint Otherlast Oct 27, 2026
(840) 233-6440 1 complaint Otherlast Oct 26, 2026
(840) 268-6857 1 complaint Imposterslast Oct 26, 2026
(840) 223-9990 1 complaint Otherlast Oct 23, 2026
(840) 466-6165 1 complaint Debt reductionlast Oct 23, 2026
(840) 500-0245 1 complaint Otherlast Oct 23, 2026
(840) 688-2419 1 complaint Callslast Oct 23, 2026
(840) 688-2995 1 complaint Debt reductionlast Oct 23, 2026
(840) 888-0584 1 complaint Debt reductionlast Oct 23, 2026
(840) 400-0421 1 complaint Debt reductionlast Oct 22, 2026
(840) 209-3156 1 complaint Otherlast Oct 21, 2026

The 25 most reported of 177 numbers.

When 840 numbers were reported

Complaints a month, last 13 months

109 in the busiest month
NovDecJanFebMarAprMayJunJulAugSepOctNov
Complaints a month, last 13 months
December 2025: 1
January 2026: 2
February 2026: 4
April 2026: 2
May 2026: 1
June 2026: 1
July 2026: 35
August 2026: 42
September 2026: 109
October 2026: 44

Hour of day, as reported in complaints

Busiest around 12 pm
12 am6 am12 pm6 pm
Hour of day, as reported in complaints
12 am: 1
1 am: 1
2 am: 1
6 am: 4
7 am: 3
8 am: 13
9 am: 27
10 am: 29
11 am: 26
12 pm: 30
1 pm: 13
2 pm: 16
3 pm: 11
4 pm: 10
5 pm: 9
6 pm: 8
7 pm: 5
8 pm: 5
9 pm: 4
10 pm: 4
11 pm: 2

The most reported 840 prefixes

Complaints by the three digits after the area code.

(840) 263
6326%
(840) 221
4619%
(840) 201
115%
(840) 466
83%
(840) 837
83%

840 numbers that unwanted calls gave to contact

Numbers in this area code that complaints named as the number a call or text asked people to contact.

(840) 263-7620 12 complaints from 11 caller IDs
(840) 253-8287 1 complaint
(840) 212-3628 1 complaint
(840) 799-7607 1 complaint
(840) 251-9985 1 complaint
(840) 799-9954 1 complaint from 1 caller ID
(840) 224-2978 1 complaint
(840) 219-1624 1 complaint
(840) 268-6034 1 complaint
(840) 466-6517 1 complaint

Towns and cities in area code 840

25 places its numbers are assigned to, the ones with the most numbers first.

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Sources

Complaints consumers filed with the FCC and FTC, Oct 2, 2025 to Oct 31, 2026. Bewary counts the reports and does not check each one. Scammers can fake the number that shows on your phone, so a reported number may belong to someone who never called you.

Other area codes in California

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