Dial-up numbers:

• Network (static IP) - 0845 0798799
• Single User (dynamic IP) - 0845 0798798
  (These are both V90 analogue and single-channel ISDN)

• Dual-channel ISDN - 0845 0798796

• Geographic bypass - 0207 206 7741
  (note: this is unsupported, but may be useful if you have problems dialling non-geographic numbers)

Mail, News and DNS servers:

• SMTP relay - relay.mail.uk.psi.net
• POP3 server (Network/corporate) - pop1.mail.uk.psi.net
• POP3 server (Interramp) - pop1.interramp.co.uk
• News - nnrp.news.uk.psi.net (See Note 1)
• DNS Resolvers (See Note 2)

• res1.dns.uk.psi.net - 154.32.105.18
• res2.dns.uk.psi.net - 154.32.107.18
• res3.dns.uk.psi.net - 154.32.109.18

NTP servers:

• ntp1.uk.psi.net - 154.32.105.50
• ntp2.uk.psi.net - 154.32.107.50
• ntp3.uk.psi.net - 154.32.109.50

1. The general news server (nnrp.news.uk.psi.net) allows client access from any IP address supplied by PSINet. It will also support a "sucked" feed (such as Slurp or DNews). If you require an active ("pushed") feed, please contact technical support.
2. The "res" servers are caching DNS resolvers only. If you require primary or secondary DNS service for your domains, please contact technical support.