You can contact dotMobi at:

dotMobi
2 La Touche House
IFSC
Dublin 1
Ireland

Email: contact@mtld.mobi
Phone: +353.1.854.1100
Fax: +353.1.791.8569

For dotMobi development issues contact us at tech@mtld.mobi
For Premium name issues contact us at premium@mtld.mobi
For Reserved name issues contact us at reserved@mtld.mobi