ホスト名が[*]とか[#]とか

某所のログからホスト名に*とかついてるのがあった…
pingとかdigとかできるものとできないものがある
ブラウザはできない系らしい

C:\Documents and Settings\sa-kubota>ping *.example.jp

Pinging *.example.jp [61.xxx.239.xxx] with 32 bytes of data:

Reply from 61.xxx.239.xxx: bytes=32 time=2ms TTL=54
Reply from 61.xxx.239.xxx: bytes=32 time=2ms TTL=54

Ping statistics for 61.xxx.239.xxx:
Packets: Sent = 2, Received = 2, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 2ms, Maximum = 2ms, Average = 2ms

kubota@backroll[~]> ping *.example.jp
zsh: no matches found: *.example.jp
kubota@backroll[~]> ping \*.example.jp
ping: cannot resolve *.example.jp: Unknown server error
kubota@backroll[~]> dig a \*.example.jp +short
61.xxx.239.xxx

ふ〜ん