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域名保留字元


1. All second-level domain names (eg. johndoe.name, janedoe.name) are reserved.
2. The following strings have been reserved by ICANN and cannot be used as either
   the second-level or the third-level component of a .NAME domain name or .NAME
   email address:
  aso
dnso
icann
internic
pso
afrinic
apnic
arin
example
gtld-servers
iad
iana
iana-servers
iesg
ietf
irtf
istf
lacnic
latnic
rfc-editor
ripe
root-servers
3. The following strings have been reserved by the Registry and cannot be used as
   the second-level component of a .NAME domain name or .NAME email address:
  celebrity
cert
certificate
directory
dns
dotname
famous
findyour
findyourfamily
findyourname
finger
ftp
getyour
getyourname
gopher
hostmaster
imap
ldap
login
myname
namedomain
nameregistry
nntp
no1
ntp
pop
pop3
registeryour
registeryourname
registry
scp
security
smtp
snmp
telnet
thefamous
thenamedomain
thenameregistry
yourname
zone
global
globalregistry
gnr
theglobal
theglobalname
theglobalnameregistry
theglobalregistry
4. The following strings have been reserved by the Registry and cannot be used as
   the third-level component of a .NAME domain name or .NAME email address:
  dir
direc
tory
email
genealogy
http
mail
mx
mx[followed by a number from 0 to 100] ([0-10] and [11-100])
ns
ns[followed by a number from 0 to 100] ([0-10] and [11-100])
wap
www
www[followed by a number from 0 to 100] ([0-10] and [11-100])
administrator
hostmaster
postmaster
complaints
mailer-daemon
abuse
root
webmaster
infomaster
5. All single character second-level domains (eg. jane.z.name) are reserved.
6. All two character second-level domains (eg. joe.mr.name) are reserved.
7. All second-level domains comprised of just numbers and hyphens (eg.
   joe.123.name,john.9-1-1.name) are reserved.
8. All second-level or third-level domains with hyphens in the 3rd and 4th positions
   (eg. jane-john.doe.name) are reserved.
9. The following absolute domain names are not available for registration
     Jesus.Christ.name
     Santa.Claus.name