4 ms·

Only if you use a noncompliant DNS server. Only letters and digits are permitted to start a hostname. http://www.apps.ietf.org/rfc/rfc1123.html#sec-2.1 http:/

by vsync 17y ago

Only if you use a noncompliant DNS server. Only letters and digits are permitted to start a hostname. http://www.apps.ietf.org/rfc/rfc1123.html#sec-2.1 http://www.apps.ietf.org/rfc/rfc1123.html#sec-2.1 http://www.apps.ietf.org/rfc/rfc952.html http://www.apps.ietf.org/rfc/rfc952.html http://www.apps.ietf.org/rfc/rfc921.html http://www.apps.ietf.org/rfc/rfc921.html