v2ex.com 一级域最近经常打不开 - V2EX
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hourui
V2EX    反馈

v2ex.com 一级域最近经常打不开

  •  
  •   hourui 2014-11-27 13:39:42 +08:00 1452 次点击
    这是一个创建于 3985 天前的主题,其中的信息可能已经有所发展或是发生改变。
    v2ex.com resolve 对应 2个 ip
    23.251.96.131 (异常)
    23.251.100.132 (ok)
    这样浏览器经常间歇性访问不了.

    其中 23.251.96.131 是无法正常访问的, 随便找了个站长工具测了下
    
    国内部分区域「集中在联通」无响应

    起初怀疑是 gfw 的问题, 但是去到 linode tokyo 发现可以 ping 通, 但是 nmap 了一下, 发现 80 端口竟然不通
    ~ nmap 23.251.96.131
    Starting Nmap 6.40 ( http://nmap.org ) at 2014-11-27 13:34 CST
    Nmap scan report for 23.251.96.131
    Host is up (0.11s latency).
    Not shown: 995 filtered ports
    PORT STATE SERVICE
    22/tcp open ssh
    53/tcp closed domain
    161/tcp closed snmp
    443/tcp open https
    6789/tcp open ibm-db2-admin

    后来又试了下 23.251.100.131 「把 (ok) ip 的尾号 d 段改成 131」, 竟然可以访问
    ~ curl -s http://v2ex.com -x 23.251.100.132:80 | head
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html lang="zh-CN">
    <head>
    <meta charset="UTF-8" />
    <meta cOntent="True" name="HandheldFriendly" />

    <meta name="detectify-verification" cOntent="d0264f228155c7a1f72c3d91c17ce8fb" />
    <meta name="alexaVerifyID" cOntent="OFc8dmwZo7ttU4UCnDh1rKDtLlY" />
    <meta name="baidu-site-verification" cOntent="D00WizvYyr" />
    <meta name="msvalidate.01" cOntent="D9B08FEA08E3DA402BF07ABAB61D77DE" />

    @Livid 难道是 ip 写错了?
    Earthman
        1
    Earthman  
       2014-11-27 15:14:30 +08:00
    我这里电信,也没法
    Livid
        2
    Livid  
    MOD
    PRO
       2014-11-27 15:48:51 +08:00
    多谢反馈。

    看来确实是 Amazon Route 53 出问题了。

    中国是不应该拿到 23.251.96.131 这个 IP 的。
    ispinfx
        3
    ispinfx  
       2014-11-27 15:56:37 +08:00 via iPhone
    今天中午11点开始一直504
    Livid
        4
    Livid  
    MOD
    PRO
       2014-11-27 15:59:57 +08:00
    23.251.96.131 这个 IP 已经从解析中拿掉。谢谢反馈。
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