なぜにプライベート？

% dig www.commufa.jp @dns0.iij.ad.jp.

; <<>> DiG 8.1 <<>> www.commufa.jp @dns0.iij.ad.jp.
; (1 server found)
;; res options: init recurs defnam dnsrch
;; got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 10
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 2, ADDITIONAL: 2
;; QUERY SECTION:
;; www.commufa.jp, type = A, class = IN

;; ANSWER SECTION:
www.commufa.jp. 21h58m44s IN CNAME S000WWT01Z.commufa.jp.
S000WWT01Z.commufa.jp. 21h58m44s IN A 192.168.128.22

;; AUTHORITY SECTION:
commufa.jp. 21h58m44s IN NS S000DNT02Z.commufa.jp.
commufa.jp. 21h58m44s IN NS S000DNT01Z.commufa.jp.

;; ADDITIONAL SECTION:
S000DNT02Z.commufa.jp. 21h58m44s IN A 192.168.128.19
S000DNT01Z.commufa.jp. 21h58m44s IN A 192.168.128.16

;; Total query time: 12 msec
;; FROM: shiva to SERVER: dns0.iij.ad.jp. 202.232.2.44
;; WHEN: Thu Nov 28 19:29:59 2002
;; MSG SIZE sent: 32 rcvd: 155