Contact details

Street address
Arkadiankatu 6 A, Helsinki

Mailing address

Telephone exchange
+358 29 509 5000, open Mon - Fri 8.00 - 16.15

Customer service, street address
Arkadiankatu 6 A, 00100 Helsinki, open Mon - Fri 9.00 - 16.15

Customer service, telephone
+358 29 509 5030, Mon - Fri 9.00 - 16.15

Read more about the contact details for the registry.

Please note that you can leave documents in the white post box at the main entrance door as early as 8.00.

Scandinavian letters å, ä and ö are replaced with a, a and o, respectively.

Send secure email to PRH

You can send secure email to us at

  1. Type your email address in the box after “From" and click “Continue".
  2. Click “Register" to register your email address. A personal link will then be sent to your email address.
  3. Log into your email account and click on the link to write secure messages.
  4. Select "PRH Registry" as recipient and click "Done".
  5. Write a message.
  6. Click “Send".


Street address
Arkadiankatu 6 A, 00100 Helsinki, open Mon–Fri 9.00–16.15.

Read more about the library.

Invoicing address

Online invoices
Online invoicing address: 003702446831
Finnish Party Identification Number (OVT): 003702446831
Business ID: 0244683-1
Transmission Identification Code of OpusCapita Ltd: 003710948874
Contact details of OpusCapita Ltd: +358 20 538 8500

Paper invoices
P.O. Box 7039, FI-01051 LASKUT, Finland

Give this address in the invoice as well.

Business ID

VAT number

How to reach us

Located centrally, our office is easily accessible for public transport users. Nearest metro station is Kamppi. Find the best connections for you on the Helsinki Region Transport website.
Nearest car parks:
Kamppi Car Park (Olavinkatu)
Eliel Car Park (Eliel-aukio/Töölönlahdenkatu)

View Larger Map

Wireless network for temporary use

You can now use our wireless network, WLAN. To use the network you need a user ID and password for two, four or 24 hours.

You can request the ID and password at the reception desk at the main entrance.