National Test House

A Trusted Name For Quality Testing

More Than 100 Years Of Service
I.T Helpdesk email - helpdesk@nth.gov.in
I.T Customer care no. - 0120-2787853 [ ( Mon - Fri ) 09:30 hrs to 17:30 hrs ]
Helpline Numbers
  2. Dear Customer, Beware of Phishing & Fraudulent Calls/Email's. NTH does not entertain middle-man/agents. Be Vigilant. Please report any suspicious calls/emails to Chief Vigilance Officer, Email : cvo-nth[at]nth[dot]gov[dot]in , Landline -0120-278 7853 & Mobile no. / WhatsApp No.- 9412223550. Important: Scheduled Downtime for NTH MIS Application for maintenance on 22.02.2026 from 06:00hrs to 18:00 hrs
Helpline Numbers
 
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 NTH HELPDESK NUMBERS [Mon-Fri(Timing 9:30am to 5:30pm)]

  • NTH(HQ), Kolkata : 9412223289,033-23675387
  • NTH(ER), Kolkata : 9412223289,033-23673871
  • NTH(NR), Ghaziabad : 9412223381,0120-2789906/2787795
  • NTH(SR), Chennai : 9412223289,044-22432374
  • NTH(NWR), Jaipur : 9412223386,0141-2332057
  • NTH(WR), Mumbai : 9412223374,022-28352341
  • NTH(NER), Guwahati : 9412223452, 0361-2471938

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Helpdesk email - helpdesk@nth.gov.in

Customer care no. - 0120-2787853 [ ( Mon - Fri ) 09:30 hrs to 17:30 hrs ]