The American Red Cross has two websites to help people get in contact with loved ones who could be affected by the disaster in Japan.
The SafeandWell link and the International Committee of the Red Cross or ICRC sites allow survivors and searchers to post brief messages about their whereabouts and condition.
Typical messages reads something like this:
“I am alive and safe” or “ Please let me know if you are safe”
Simple step-by-step instructions on the web sites listed below allow you to search the list for missing persons.
https://safeandwell.communityos.org/cms/index.php
http://www.icrc.org/familylinks
http://www.google.co.jp/intl/en/crisisresponse/japanquake2011.html
If the person you are looking for has a cell phone in Japan, and you know which company his/her cell phone is, you can check each company's website below and type in the phone number to see if he/she has left a message. The available areas are Aomori, Miyagi, Yamagata and Fukushima prefectures.
For Docomo users:
http://dengon.docomo.ne.jp/top.cgi
For KDDI (Ezweb) users:
For Softbank users:
For Wilcom users:
http://dengon.willcom-inc.com/dengon/Top.do
For Emobile users:
If you are looking for information regarding U.S. citizens in Japan, the U.S. Embassy and Consulates in Japan are working to obtain information on the status of U.S. citizens and to provide assistance as necessary.
If you have concerns about a specific U.S. citizen in Japan, please send the State Department an email at JapanEmergencyUSC@state.gov.
If you have concerns about a specific U.S. citizen in the Tsunami zone outside of Japan, please send the State Department an email at PacificTsunamiUSC@state.gov.
Although telephone lines are disrupted, you may want to try contacting your loved one by email, text (SMS) message, or other social media.