我在名称服务器中为服务器定义了反向 DNS 区域muq.ac.ir
,该服务器响应域muq.ac.ir
服务器的名称解析。然后我为 IP 地址添加了一个80.191.92.199
值为 的ptr 记录muq.ac.ir
。然而,大约 12 小时后,我仍然无法反向查找我的域。
我是否遗漏了有关 DNS 服务器的某些信息,或者我的服务器不负责反向查找?
还是 DNS 服务器仍未传播?
答案1
您的 DNS 服务器不负责此区域。您可以使用 dig 请求进行检查:
$ dig 92.191.80.in-addr.arpa
; <<>> DiG 9.8.4-rpz2+rl005.12-P1 <<>> 92.191.80.in-addr.arpa
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 63048
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
;; QUESTION SECTION:
;92.191.80.in-addr.arpa. IN A
;; AUTHORITY SECTION:
80.in-addr.arpa. 3463 IN SOA pri.authdns.ripe.net. dns.ripe.net. 1409314932 3600 600 864000 7200
;; Query time: 1 msec
;; SERVER: 192.168.0.254#53(192.168.0.254)
;; WHEN: Sun Aug 31 23:33:08 2014
;; MSG SIZE rcvd: 100
公共地址由 RIPE 提供,他们将地址委托给其他公司。如果您不是这块 IP 地址的所有者,那么您应该要求创建向您提供此公共 IP 的 PTR 公司。一般来说,它是互联网服务或托管提供商。
以下是有关该 IP 地址块的所有者以及该块的 BGP AS 编号的信息:
$ whois 80.191.92.199
% This is the RIPE Database query service.
% The objects are in RPSL format.
%
% The RIPE Database is subject to Terms and Conditions.
% See http://www.ripe.net/db/support/db-terms-conditions.pdf
% Note: this output has been filtered.
% To receive output for a database update, use the "-B" flag.
% Information related to '80.191.92.192 - 80.191.92.255'
% Abuse contact for '80.191.92.192 - 80.191.92.255' is '[email protected]'
inetnum: 80.191.92.192 - 80.191.92.255
netname: MEDUNIQOM
descr: Medical university of qom
country: IR
admin-c: KS3649-RIPE
tech-c: KS3649-RIPE
status: ASSIGNED PA
mnt-by: AS12880-MNT
source: RIPE # Filtered
person: Kayyal Saied
address: Saheli St.,Qom,Iran
phone: +98 251 772 36 60
nic-hdl: KS3649-RIPE
source: RIPE # Filtered
% Information related to '80.191.64.0/19As12880'
route: 80.191.64.0/19
descr: DCI-Route
origin: As12880
mnt-by: AS12880-MNT
source: RIPE # Filtered
% This query was served by the RIPE Database Query Service version 1.75 (DB-3)