Which phone number does KDDI use when contacting customers?
KDDI may contact the customers by phone or text message (SMS) to provide information about special offers.
In such cases, we will contact you using one of the phone numbers currently registered with KDDI.
Important notes
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The initial "0" of the caller's phone number may also be displayed as "+81 (Japan's country code)" .
Example: "050 **** **** " may be displayed as "+81 50 **** ****"
- If you receive a call from a number claiming to be an agency or similar entity not listed on this page, and you feel suspicious about it - for example, if they ask to confirm your contract details or fail to provide clear answers to your questions, please avoid sharing any personal information.
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Even if the sender's phone number appears to match the legitimate numbers listed on this page, please be aware of that as it may occasionally be falsified through impersonation or spoofing.
If you receive any contact that you do not recognize or find suspicious, please ensure that you do not open any links or URLs provided in the message.
Phone numbers currently in use by KDDI
Numbers that do not start with 0120, 050, or 0800
151
+1 231 400 0770
+1 231 400 0771
+1 231 400 0772
Numbers starting with 0120
0120 067 108
0120 067 466
0120 068 178
0120 180 430
0120 186 966
0120 407 072
0120 409 214
0120 409 227
0120 426 351
0120 426 532
0120 462 707
0120 487 751
0120 499 866
0120 499 918
0120 502 998
0120 694 472
0120 769 634
0120 769 756
0120 777 429
0120 785 446
0120 829 471
0120 829 598
0120 839 848
0120 860 383
0120 907 024
0120 914 447
0120 914 519
0120 914 615
0120 914 893
0120 914 899
0120 922 567
0120 922 602
0120 922 945
0120 922 946
0120 924 002
0120 925 451
0120 925 487
0120 925 641
0120 925 821
0120 925 919
0120 929 134
0120 929 146
0120 929 818
0120 933 120
0120 933 380
0120 959 965
0120 966 817
0120 974 412
0120 977 407
0120 983 591
0120 984 582
0120 984 606
0120 984 625
0120 984 769
0120 984 771
0120 988 342
0120 988 585
0120 988 850
0120 989 465
0120 993 374
0120 995 670
0120 995 677
0120 995 729
0120 996 437
0120 996 438
Numbers starting with 050
050 1724 0071
050 3174 7785
050 3184 0070
050 3188 0171
050 3189 0051
050 3189 0057
050 3189 0058
050 3189 0059
Numbers starting with 0800
0800 080 0007
0800 080 0622
0800 080 1348
0800 080 5115
0800 080 5551
0800 500 3262
0800 500 6311
0800 500 6640
0800 777 0194
0800 777 0213
0800 777 5379
0800 777 5491
+1 231 400 0773
+1 231 400 0774
+1 231 400 0775
0120 297 138 0120 384 021 0120 387 265 0120 388 377 0120 406 941
0120 427 621 0120 429 241 0120 429 361 0120 430 053 0120 435 184
0120 503 804 0120 549 232 0120 554 866 0120 574 870 0120 659 472
0120 785 484 0120 785 610 0120 786 158 0120 826 633 0120 827 061
0120 907 183 0120 911 052 0120 911 314 0120 911 695 0120 911 757
0120 914 910 0120 921 361 0120 921 541 0120 921 751 0120 921 928
0120 924 039 0120 924 077 0120 924 783 0120 924 984 0120 925 050
0120 925 924 0120 925 971 0120 926 525 0120 926 646 0120 929 063
0120 933 715 0120 938 112 0120 944 113 0120 944 523 0120 959 047
0120 983 799 0120 984 365 0120 984 412 0120 984 447 0120 984 448
0120 984 912 0120 985 011 0120 985 212 0120 985 480 0120 988 217
0120 993 384 0120 993 821 0120 994 083 0120 994 514 0120 995 097
0120 996 439 0120 996 972
050 3189 0052 050 3189 0053 050 3189 0054 050 3189 0055 050 3189 0056
0800 080 7225 0800 080 7255 0800 123 6172 0800 500 0358 0800 500 3057
0800 777 0334 0800 777 0547 0800 777 0934 0800 777 2682 0800 777 3156 |
For your reference
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If you have provided your au ID or password to a suspicious contact, please check the following page for instructions on how to deal with the situation.
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If you are subscribed to Ponta Pass or Ponta Pass Light, you can use the "Spam Message and Call Blocking App" [迷惑メッセージ・電話ブロックアプリ] which automatically displays warnings and the caller's name for spam SMS messages (such as fraudulent billing messages) and spam calls.
For details, please refer to the following page.
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There have been many reports of spam SMS messages and emails falsely claiming to be from KDDI, including au and UQ mobile.
For details, please refer to the following page.
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