Passport Office Delhi is under Ministry of External Affairs, Government of India and its site has office address, jurisdiction, office timings, contact info, grievances, IVRS, passport seva kendra info etc
It also has details like where to apply, counter details, passport tatkaal scheme, delivery, list of holidays, officers list, agent login, application forms download, tele-enquiry, SMS passport status, application status, special counters, passport act, how to apply etc
Regional Passport Office,
Trikoot - 3, HUDCO Building,
Bhikaji Camaji Place, New Delhi
Fax: 011-26165870/ 26161783
SMS Status enquiry : "Ppt < FileNo >" to 57272
Web : http://passport.gov.in/delhi.html