Compare and connect with mobile SIM, electricity, gas, water, and fiber internet services across Japan.
Choose your area for gas, water and electricity contacts. Mobile carriers are shown nationwide; check reception and exact service address. These are customer-service contacts, not emergency numbers.
Gas · Tokyo / Kanagawa / Saitama / Chiba
Customer centre. Selected service districts in these prefectures; check the address and gas network before applying. Navi Dial charges apply.
0570-002211Official website & contact details ↗Contact verified: 2026-10-21
Gas · Osaka / Kyoto / Hyogo / Nara / Shiga / Wakayama
Customer centre for gas contracts, moving and billing. Coverage is limited to supplied districts, not every address in Kansai.
0120-0-94817Official website & contact details ↗Contact verified: 2026-10-21
Water · Tokyo
Customer centre: Tokyo wards and designated Tama municipalities. Excludes Musashino, Akishima, Hamura, Hinohara and islands. Navi Dial charges apply.
0570-091-100Official website & contact details ↗Contact verified: 2026-10-21
Water · Osaka
Customer centre for Osaka CITY water service; other cities in Osaka Prefecture have their own authorities.
06-6458-1132Official website & contact details ↗Contact verified: 2026-10-21
Electricity · Tokyo / Kanagawa / Saitama / Chiba / Ibaraki / Tochigi / Gunma / Yamanashi
Regulated-plan contract and moving enquiries. Free-market plans use 0120-995-113. Check your plan and address on the official page.
0120-995-001Official website & contact details ↗Contact verified: 2026-10-21
Electricity · Osaka / Kyoto / Hyogo / Nara / Shiga / Wakayama
New contract switching enquiries; this is a sales/contract line, not an outage hotline. Confirm service address and tariff.
0800-777-1900Official website & contact details ↗Contact verified: 2026-10-21
Mobile SIM · Nationwide
Japan-wide mobile network customer support. Indoor and local reception varies; check the carrier coverage map and plan. Calls are for use within Japan.
0120-800-000Official website & contact details ↗Contact verified: 2026-10-21
Mobile SIM · Nationwide
Japan-wide mobile network customer support. Indoor and local reception varies; check the carrier coverage map and plan. Calls are for use within Japan.
0077-7-111Official website & contact details ↗Contact verified: 2026-10-21
Mobile SIM · Nationwide
Japan-wide mobile network customer support. Indoor and local reception varies; check the carrier coverage map and plan. Calls are for use within Japan.
0800-919-0157Official website & contact details ↗Contact verified: 2026-10-21
Gas · Hokkaido
Customer centre for supplied Hokkaido Gas districts; not all Hokkaido addresses. Navi Dial charges apply.
0570-008800Official website & contact details ↗Contact verified: 2026-10-22
Gas · Aichi / Gifu / Mie
Customer centre for supplied districts in Aichi, Gifu and Mie. Check the address and contract. Navi Dial charges apply.
0570-783987Official website & contact details ↗Contact verified: 2026-10-22
Gas · Fukuoka / Nagasaki / Kumamoto
Customer service for supplied Saibu Gas group districts. Confirm your local group company and address. Navi Dial charges apply.
0570-000-312Official website & contact details ↗Contact verified: 2026-10-22
Electricity · Hokkaido
Contract centre for moving and contract changes. Remote-island network contracts can have separate contacts; confirm your supplier.
0120-12-6565Official website & contact details ↗Contact verified: 2026-10-22
Electricity · Aomori / Iwate / Miyagi / Akita / Yamagata / Fukushima / Niigata
Contract applications including moving. Coverage depends on address and tariff; not an outage line.
0120-066-774Official website & contact details ↗Contact verified: 2026-10-22
Electricity · Aichi / Gifu / Mie / Nagano / Shizuoka
Moving/start and stop applications. Only supplied districts in these prefectures; check exact address and plan.
0120-921-691Official website & contact details ↗Contact verified: 2026-10-22
Electricity · Toyama / Ishikawa / Fukui
Electricity contract enquiries. Coverage depends on supplied districts and tariff; check the official procedure for your address.
0120-776-453Official website & contact details ↗Contact verified: 2026-10-22
Electricity · Hiroshima
Hiroshima-area customer contact. Other prefectures have separate numbers on the official regional contact directory.
0120-297-510Official website & contact details ↗Contact verified: 2026-10-22
Electricity · Kagawa
Regional branch enquiry contact. Confirm contract-specific procedures and your supplier on the official site.
0120-410-761Official website & contact details ↗Contact verified: 2026-10-22
Electricity · Ehime
Regional branch enquiry contact. Confirm contract-specific procedures and your supplier on the official site.
0120-410-452Official website & contact details ↗Contact verified: 2026-10-22
Electricity · Tokushima
Regional branch enquiry contact. Confirm contract-specific procedures and your supplier on the official site.
0120-564-552Official website & contact details ↗Contact verified: 2026-10-22
Electricity · Kochi
Regional branch enquiry contact. Confirm contract-specific procedures and your supplier on the official site.
0120-410-430Official website & contact details ↗Contact verified: 2026-10-22
Electricity · Okinawa
Retail support for moving, charges and other enquiries. Charged call; follow official hours and guidance.
098-993-7777Official website & contact details ↗Contact verified: 2026-10-22
Water · Hokkaido
Municipal water moving/customer contact for Sapporo service districts only, not the entire prefecture. Other municipalities have separate water authorities.
011-211-7770Official website & contact details ↗Contact verified: 2026-10-22
Water · Miyagi
Municipal water moving/customer contact for Sendai service districts only, not the entire prefecture. Other municipalities have separate water authorities.
022-748-1111Official website & contact details ↗Contact verified: 2026-10-22
Water · Kanagawa
Municipal water moving/customer contact for Yokohama service districts only, not the entire prefecture. Other municipalities have separate water authorities.
045-847-6262Official website & contact details ↗Contact verified: 2026-10-22
Water · Aichi
Municipal water moving/customer contact for Nagoya service districts only, not the entire prefecture. Other municipalities have separate water authorities.
052-884-5959Official website & contact details ↗Contact verified: 2026-10-22
Water · Kyoto
Municipal water moving/customer contact for Kyoto service districts only, not the entire prefecture. Other municipalities have separate water authorities.
075-672-7770Official website & contact details ↗Contact verified: 2026-10-22
Water · Hiroshima
Municipal water moving/customer contact for Hiroshima service districts only, not the entire prefecture. Other municipalities have separate water authorities.
082-511-5959Official website & contact details ↗Contact verified: 2026-10-22
Water · Fukuoka
Municipal water moving/customer contact for Fukuoka service districts only, not the entire prefecture. Other municipalities have separate water authorities.
092-532-1010Official website & contact details ↗Contact verified: 2026-10-22
Mobile SIM · Nationwide
Support for existing Rakuten Saikyo Plan customers. Check local reception, contact hours and call charges.
050-5434-4653Official website & contact details ↗Contact verified: 2026-10-22