From MSNPiki

LST

Sent following a unmatched SYN's response. Contact list

-- MSNP11 --

 <<< LST N=email@addr.ess F=Display%20Name C=xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx 13 xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx

-- MSNP8 --

 <<< LST accountname nickname list groups

• accountname: Contact's Passport email address
• nickname: Contact's nickname (not display name)
• list: The list this user belongs to (see MSNP8:Getting_Details#List_Numbers)
• groups: If contact is in forward list, comma-separated list of groups that this contact belongs to