| Location | |
|---|---|
| Country | Japan |
| Continent | Asia |
| Access codes | |
| Country calling | +81 |
| International prefix | 010 |
| Trunk prefix | 0 |
| Dial plan | |
| Type | closed |
00 Carrier selection prefix 184 Prefix to withhold caller ID 186 Prefix to provide caller ID
1xx Special numbers 00xx Carrier selection codes x 1-digit geographic area codes xx 2-digit geographic area codes xxx 3-digit geographic area codes xxxx 4-digit geographic area codes xxxxx 5-digit geographic area codes x0 2-digit non-Geographic area codes (excluding 10) xx0 3-digit non-Geographic area codes (1x0, 570, 800, 910, 990)
Special numbers are 3 digits long Geographic numbers are 9 digits long x0 Non-geographic numbers are 10 digits long xx0 Non-geographic numbers are 9 digits long
110 Police 118 Maritime emergencies 119 Ambulance, Fire brigade 171 Earthquake assistance
100 NTT operator 106 Operator assisted collect call service 108 Automated collect call service 113 NTT technical faults hotline 116 NTT customer service and general enquiries
104 NTT national directory enquiries 0057 KDDI international directory enquiries
114 Automated number-busy check 115 Telegram service 117 Speaking clock 136 Information on last incoming call 177 Weather forecast
With the exception of 1, all carrier selection codes are two digits long. They are dialed before the phone number to select a specific carrier. Carrier selection codes are always preceded by '00', the carrier selection prefix.
1 KDDI (international) 33 NTT Communications 36 NTT East 37 Fusion Communications 39 NTT West 41 SoftBank Telecom (international / former Japan Telecom) 56 KDDI (international) 61 SoftBank Telecom (international / former Cable and Wireless IDC) 66 SoftBank Telecom (international / former Cable and Wireless IDC) 71 Verizon Japan 77 KDDI (national) 80 T-Systems 81 Fusion Communications (former TTNet) 88 SoftBank Telecom (national / former Japan Telecom) 89 T-Systems
120 NTT Freedial, tollfree services 130 Automated information services 140 Disaster relief wireless communications 160 Disaster relief satellite communications 170 NTT Dengon Dial, chat line services 180 NTT Telegong, TV/Radio show feedback dial-in 180 NTT Teledome, automated information services 190 NTT Angel Line, automated directory services via PC/modem 190 NTT Annai Jozu, automated directory services via telephone 800 Other tollfree services 20 Paging services 30 Mobile telephony services (legacy systems, PDC, J-CDMA, UMTS) 40 Mobile telephony services (legacy systems, PDC, J-CDMA, UMTS) 50 IP telephony service (via internet service providers) 570 Navi Dial, non-geographic wireline 60 Universal personal number services 70 Mobile telephony and data services (PHS) 80 Mobile telephony and data services (PDC, J-CDMA, UMTS) 90 Mobile telephony and data services (PDC, J-CDMA, UMTS) 910 Private circuit access, local rate services 990 NTT DialQ2, premium rate services
150 formerly used for maritime wireless communications 450 formerly used for maritime wireless communications 750 formerly used for maritime wireless communications
11 Sapporo 138 Hakodate 166 Asahikawa 177 Aomori 188 Akita 196 Morioka 22 Sendai 236 Yamagata 245 Fukushima 249 Kōriyama 25 Niigata 26 Nagano 272 Maebashi 273 Takasaki 286 Utsunomiya 3 Tokyo 42 Tokorozawa 47 Kashiwa 426 Hachiōji 427 Machida, Sagamihara 432 or 433 Chiba 44 Kawasaki 45 Yokohama 466 Fujisawa 468 Yokosuka 473 Ichikawa, Matsudo 474 (473 for west part of the city)) Funabashi 482 Kawaguchi 486 or 487 or 488 Saitama 49 Kawagoe 52 Nagoya 53 Hamamatsu 532 Toyohashi 54 Shizuoka 55 Kofu 564 Okazaki 565 Toyota 568 Kasugai 569 Handa 58 Gifu 586 Ichinomiya 592 Tsu, Yokkaichi 6 Osaka, Higashiōsaka, Suita, Toyonaka, Amagasaki 722 Sakai 726 Takatsuki 728 Hirakata 73 Wakayama 742 or 743 Nara 75 Kyoto 762 Kanazawa 764 Toyama 775 Ōtsu 776 Fukui 78 Kobe 790 Kasai 792 or 793 Himeji 794 Kakogawa 797 or 798 Nishinomiya, Takarazuka 82 Hiroshima 832 Shimonoseki 839 Yamaguchi 84 Fukuyama 852 Matsue 857 Tottori 862 or 869 Okayama 864 or 865 Kurashiki 878 Takamatsu 886 Tokushima 888 Kochi 899 Matsuyama 92 Fukuoka 93 Kitakyushu 942 Kurume 958 Nagasaki 952 Saga 956 Sasebo 96 Kumamoto 97 Ōita 98 Naha 985 Miyazaki 99 Kagoshima
Geographic numbers are 9 digits long including the area code. Consequently, densely populated areas have shorter area codes, while less populated areas have longer area codes. For example:
6 xxxx xxxx (Osaka) 75 xxx xxxx (Kyoto) 742 xx xxxx (Nara) 4992 x xxxx (Niijima island, Tokyo pref.) 82486 xxxx (Takano, Hiroshima pref.)
Area codes increase from north to south; Sapporo in Hokkaidō (the northernmost prefecture) has 11, and Setouchi's 9973 is far to the south in Kagoshima. When the telephone system was devised, Okinawa was still under U.S. occupation, so when it was returned to Japan in 1972, its telephone numbers were squeezed between Miyazaki (98x) and Kagoshima (99x) and begin with 988, 989, and 980.
During the 1990s, when plans were being drawn up to amalgamate mid-sized cities and towns into larger municipalities, telephone numbering systems were merged in advance. For example,
7442 x xxxx Kashihara (Nara prefecture) 7444 x xxxx Sakurai 74452 xxxx Takatori 74454 xxxx Asuka etc.
became:
744 2x xxxx Kashihara 744 4x xxxx Sakurai 744 52 xxxx Takatori 744 54 xxxx Asuka etc.
Many of these towns have in fact refused to merge, leaving callers with more digits to dial when making local calls. This is partially balanced by not having to dial an area code for the neighboring city.