http://www.alvestrand.no/objectid/

for maintaining your own schema, I recommend to use norEdu* as template -> http://www.feide.no/ldap-schema-feide

also read http://www.openldap.org/doc/admin22/schema.html chapter #8.2
for suggestive setup of ranges

http://www.nacs.uci.edu/idm/Directories/LDAP/

  homepageurl

http://fsuid.fsu.edu/admin/lib/WinADLDAPAttributes.html

  wwwhomepage

http://tools.ietf.org/id/draft-ietf-asid-x500-url-00.txt



DNS
---

http://www.ietf.org/rfc/rfc1279.txt
ldap2zone, ldap2dns, ldapdns