Computer Support Email List in Japan

Q: How many computer support in Japan have an email address?

420+ of the 1,700+ businesses (23.8%) list at least one email address. 1,500+ (86.5%) have a phone number.

Q: Where are most computer support in Japan located?

Tokyo To (370+, 20.9%), Osaka Fu (140+, 7.9%), and Aichi Ken (86, 4.8%) have the most listings: together 33.6% of the 1,700+ businesses.

Q: Can I get the list of computer support in Japan for just one region?

Yes. The ready-made file covers all 1,700+ businesses. For a single region, create an account and build a custom list filtered by region: Tokyo To alone has 370+ of them (20.9%).

Q: How many computer support in Japan have a website?

1,400+ of the 1,700+ businesses (78.5%) list a website. Businesses without an email address can often be contacted through their site.

Q: How up to date is the list of computer support in Japan?

The figures come from the SphereScout snapshot of October 27, 2026. Counts are recalculated every week.

Q: Are the phone numbers mobile?

Some are. 350+ businesses (20%) have a mobile number. The list has 360+ mobile numbers and 1,500+ landlines in total, in a separate Mobile Phones column.

SphereScout lists 1,700+ computer support in Japan (October 2026 snapshot). Of these, 420+ (23.8%) have an email address, 1,500+ (86.5%) have a phone number, 1,400+ (78.5%) have a website, and 350+ (20%) have a mobile number.

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400+ Email addresses · CSV/Excel

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Last update: October 2026File type: CSV/Excel

How many computer support are there in Japan?

Source: SphereScout Data Lab, snapshot of October 27, 2026. About this data

SphereScout indexes 1,500+ public business listings categorized as Computer Support in Japan. 400+ businesses (23.8%) have at least one email address; 1,500+ (86.5%) have at least one phone number. 300+ (20%) have a mobile number.

Where these listings are concentrated

Tokyo To300+20.9% of this dataset
Osaka Fu100+7.9% of this dataset
Aichi Ken80+4.8% of this dataset
Kanagawa Ken70+4.1% of this dataset
Fukuoka Ken70+4% of this dataset
Hokkaido60+3.3% of this dataset
Saitama Ken50+3.2% of this dataset
Hyogo Ken50+2.8% of this dataset

Show all 47 regions

Chiba Ken40+ (2.7%)
Shizuoka Ken40+ (2.3%)
Niigata Ken30+ (1.7%)
Kyoto Fu20+ (1.5%)
Okayama Ken20+ (1.3%)
Ibaraki Ken20+ (1.2%)
Kumamoto Ken20+ (1.2%)
Hiroshima Ken20+ (1.2%)
Nagano Ken20+ (1.2%)
Fukushima Ken20+ (1.1%)
Miyagi Ken10+ (1.1%)
Gumma Ken10+ (1%)
Gifu Ken10+ (0.9%)
Tochigi Ken10+ (0.9%)
Mie Ken10+ (0.8%)
Okinawa Ken10+ (0.8%)
Akita Ken10+ (0.8%)
Ishikawa Ken10+ (0.8%)
Iwate Ken10+ (0.7%)
Kagawa Ken10+ (0.7%)
Shimane Ken10+ (0.7%)
Yamagata Ken10+ (0.7%)
Yamaguchi Ken10+ (0.7%)
Kagoshima Ken10+ (0.7%)
Nagasaki Ken10+ (0.7%)
Nara Ken10+ (0.7%)
Oita Ken10+ (0.7%)
Shiga Ken10+ (0.7%)
Aomori Ken10+ (0.6%)
Fukui Ken10+ (0.6%)
Toyama Ken10+ (0.6%)
Ehime Ken10+ (0.6%)
Wakayama Ken10+ (0.6%)
Yamanashi Ken10+ (0.6%)
Miyazaki Ken9 (0.5%)
Kochi Ken7 (0.4%)
Tottori Ken7 (0.4%)
Tokushima Ken4 (0.2%)
Saga Ken1 (<0.1%)

Public business listings: 1,500+
Businesses with email: 400+ (23.8%); 400+ email addresses in total. Some businesses list several.
Businesses with phone: 1,500+ (86.5%); 2,000+ phone numbers in total. Some businesses list several.
Businesses with a mobile phone: 300+ (20%); 300+ mobile numbers and 1,500+ landlines in total.

These figures describe SphereScout's current coverage of public business listings in Japan. They are not an official count of every business or licensed professional. Records marked permanently closed are excluded.

Sample Preview

Preview the exact data you'll receive.

Company	Location	Phone	Email
株式会社ピュアメイト	Kashima, Ibaraki Ken	81 2 00	i*@p*.com
合同会社Will		81 9 11	s*@w*.com
Nihonjimuki	Chuo, Hokkaido	81 5 70	a*@n*.jp
株式会社シンユーコンサルティング	Taito, Tokyo To	81 3 11	w*@s*.jp
Engage Squared	Shinagawa, Tokyo To	81 3 85	s*@e*.com
株式会社さくらシステムサポーター	Hachioji, Tokyo To	81 4 31	l*@s*.jp
中央ビジコム株式会社神奈川支店	Nishi, Kanagawa Ken	81 4 20	i*@b*.jp
ICT support Priva Plus	Yokkaichi, Mie Ken	81 9 91	p*@g*.com
Smilefactoryten スマイルファクトリーテン			t*@s*.com
D2J㈱	Setagaya, Tokyo To	81 3 66	i*@d*.com
400+ more contacts

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Need more than this list? Japan Business Email List: 485,000+ businesses with emails across 19 industries.

How SphereScout prepares this business contact CSV

SphereScout turns public business profiles into a category-and-location export. The process uses the business categories shown in the current page breakdown and keeps official registers, classifications, licences, and inspections separate from the file.

Match the displayed business categories
SphereScout selects public business profiles matching the categories shown in the current page breakdown. These labels define the file's scope but do not replace official activity codes or authorizations.
Structure available public details
SphereScout organizes the available business name, category, location, website, email, phone, and public profile fields, then normalizes and deduplicates contact values for export.
Publish coverage and deliver the CSV
SphereScout refreshes public business profiles regularly, publishes the latest collection date and available coverage totals, and delivers the selected records as a structured CSV.

See collection timing and source methodology

Using business contacts in Japan

A published or purchased address is not blanket permission for advertising email. Japan's Act on Regulation of Transmission of Specified Electronic Mail is consent-led and identifies prior request or consent, an existing business relationship, and limited statutory exceptions. Commercial messages must carry the required sender information and must stop after a refusal. Personal information remains subject to the APPI.

Read Japan's official commercial-email law and APPI materials

Keep recipient-level evidence of the request, consent, business relationship, or specific exception relied on before sending advertising email.
Do not infer consent from a public listing, custom domain, role inbox, or purchased spreadsheet.
Display the required advertising designation, sender name and address, and a valid email address for refusal as applicable.
Stop sending after the recipient asks not to receive the advertising email and maintain a suppression list.
When a contact identifies a person, define and disclose the utilization purpose, limit use to that purpose, and apply appropriate APPI safeguards.
Validate that the business, operating company, geography, and offer are relevant before choosing email, telephone, or another channel.
The commercial-email rules do not grant permission for indiscriminate calls. Identify the caller and purpose, contact at reasonable times, keep the offer relevant, apply the APPI when a number identifies a person, and suppress further calls after an objection.

Classify the contact route before outreach

Evidence

Treatment

Consent or relationship evidenced

EvidenceA retained request or consent record, an existing business relationship, or another documented statutory basis for the intended advertising message.

TreatmentSend within the evidenced scope, include the required sender information and refusal route, and preserve the evidence.

Public business route only

EvidenceThe address or number appears on a business profile, but there is no evidence that the recipient requested or consented to advertising email.

TreatmentUse the profile for qualification. Do not treat publication alone as email consent; obtain permission or use a lawful alternative channel.

Identity or source unresolved

EvidenceThe domain, business, operating company, recipient, source context, or current status cannot be confirmed.

TreatmentValidate or exclude the record before contact. A Corporate Number match does not establish control of a branch inbox or permission to message it.

Frequently Asked Questions

How many computer support in Japan have an email address?

420+ of the 1,700+ businesses (23.8%) list at least one email address. 1,500+ (86.5%) have a phone number.

Where are most computer support in Japan located?

Tokyo To (370+, 20.9%), Osaka Fu (140+, 7.9%), and Aichi Ken (86, 4.8%) have the most listings: together 33.6% of the 1,700+ businesses.

Can I get the list of computer support in Japan for just one region?

Yes. The ready-made file covers all 1,700+ businesses. For a single region, create an account and build a custom list filtered by region: Tokyo To alone has 370+ of them (20.9%).

How many computer support in Japan have a website?

1,400+ of the 1,700+ businesses (78.5%) list a website. Businesses without an email address can often be contacted through their site.

How up to date is the list of computer support in Japan?

The figures come from the SphereScout snapshot of October 27, 2026. Counts are recalculated every week.

Are the phone numbers mobile?

Some are. 350+ businesses (20%) have a mobile number. The list has 360+ mobile numbers and 1,500+ landlines in total, in a separate Mobile Phones column.

Computer Support by country

SphereScout lists Computer Support in 38 countries. Largest market: United States (30,000+ public business listings).

Country	Public business listings	Businesses with email	Businesses with phone
United States	30,000+	13,000+(44.4%)	28,000+(96.3%)
France	15,000+	6,500+(43.8%)	14,000+(94.1%)
United Kingdom	10,000+	5,500+(50.4%)	10,000+(93.4%)
Australia	8,500+	4,000+(46.6%)	7,500+(92.1%)
Canada	6,000+	2,500+(43.7%)	5,500+(93.2%)
Germany	5,500+	500+(10.1%)	5,000+(93.4%)
Spain	5,000+	2,000+(39.6%)	4,500+(92.3%)
Türkiye	3,500+	1,000+(36.4%)	3,500+(91.4%)
Switzerland	2,500+	1,000+(45.9%)	2,500+(91.4%)
Netherlands	2,000+	900+(40.5%)	2,000+(89.7%)
Brazil	2,000+	500+(25.9%)	2,000+(95.9%)
Argentina	2,000+	100+(7.3%)	1,500+(92.3%)
Poland	2,000+	700+(37.9%)	1,500+(94.5%)
Belgium	1,500+	900+(51%)	1,500+(90.8%)
Japan(this page)	1,500+	400+(23.8%)	1,500+(86.5%)
United Arab Emirates	1,500+	700+(43.5%)	1,500+(93.8%)
Saudi Arabia	1,500+	100+(12.7%)	1,000+(86.3%)
Italy	1,000+	600+(45.4%)	1,000+(94.6%)
New Zealand	1,000+	500+(42.2%)	1,000+(92.7%)
Sweden	1,000+	500+(50.4%)	1,000+(91.4%)
Slovenia	900+	300+(33.5%)	700+(74.7%)
Israel	900+	300+(33.9%)	800+(96.4%)
Portugal	800+	400+(53.4%)	700+(90.2%)
Romania	700+	100+(16.9%)	600+(90.9%)
Czechia	700+	200+(37.6%)	600+(90.4%)
Slovakia	700+	300+(51%)	600+(91.8%)
Austria	600+	300+(52.6%)	600+(94.8%)
Hungary	600+	100+(17.5%)	500+(89.2%)
Ireland	500+	200+(39.9%)	500+(93.1%)
Croatia	400+	200+(46.7%)	400+(89%)
Bulgaria	400+	200+(42.5%)	400+(90.7%)
Greece	400+	100+(40.5%)	300+(95.4%)
Denmark	300+	100+(36.9%)	300+(92.8%)
Finland	300+	100+(47.8%)	300+(85.5%)
Norway	300+	100+(46.7%)	300+(90.5%)
Serbia	200+	100+(38.5%)	200+(89.5%)
Qatar	200+	70+(33.5%)	200+(93.9%)
Lithuania	200+	100+(53%)	100+(94%)

Counts come from the latest SphereScout snapshot for each country. They describe public business listings, not an official count of every business.