When traveling in Nepal, It's better to register with your embassy, especially if you are planning on undertaking long and remote trekking. At least you should have your embassies contact details so that when you get trouble they may be able to assist you. Your embassy can also give you information on safe traveling and health issues should you require them. In Nepal, you can find the following embassies.
Embassy information of different country in Nepal:
Australia, Basbari
ph. No: 4371678
Bangladesh,Maharajganj
Ph. No: 4372843
bdootktm@wlink.com.np
China, Baluwatar
ph. No: 4419053
Denmark, Lazimpat
Ph. No:4413010 ktmamb@um.dk
Egypt, pulchowk
ph.No: 5524812
Finland, Lazimpat
Ph. No: 44117221 sanomat.kat@formist.fi France
ph.No: 4412332 ambafr@mos.com.np
Germany, Gyneshwar
Ph. No: 4412786 gerembnp@mos.com.np
India, Lainchaur
Ph. No: 4410900 hocktar@mos.com.np
Japan, Panipokhari
Ph. No: 4426680 comgpn@mos.com.np
Korea (south), Tahachal
Ph. No: 4270172 Korean@wlink.com.np
Myanmar,Patan Gate
Ph. No: 5521788 emb@mos.com.np
Malaysia, Durbar Marg
Ph. No: 4238473a