Hello,
I have an Internet user from Hong Kong. I have been using Google
Public DNS for a period. Google Public DNS can resolve the nearest IP
address most of time for website utilize CDN.
However, for Yahoo Hong Kong site (
hk.yahoo.com), Google Public DNS
could not resolve the IP address of the nearest server. The situation
is listed as belows:
C:\Users\Jean>nslookup
hk.yahoo.com 8.8.8.8
Server:
google-public-dns-a.google.com
Address: 8.8.8.8
Non-authoritative answer:
Name:
any-ycpi-uno.aycpi.b.yahoodns.net
Addresses: 208.71.44.30
98.139.126.21
208.71.44.31
98.139.126.20
67.195.141.200
67.195.141.201
Aliases:
hk.yahoo.com
geoycpi-uno.gycpi.b.yahoodns.net
C:\Users\Jean>ping -n 1 208.71.44.30
Pinging 208.71.44.30 with 32 bytes of data:
Reply from
208.71.44.30: bytes=32 time=200ms TTL=50
Ping statistics for
208.71.44.30:
Packets: Sent = 1, Received = 1, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 200ms, Maximum = 200ms, Average = 200ms
C:\Users\Jean>ping -n 1 98.139.126.21
Pinging 98.139.126.21 with 32 bytes of data:
Reply from
98.139.126.21: bytes=32 time=176ms TTL=53
Ping statistics for
98.139.126.21:
Packets: Sent = 1, Received = 1, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 176ms, Maximum = 176ms, Average = 176ms
C:\Users\Jean>ping -n 1 208.71.44.31
Pinging 208.71.44.31 with 32 bytes of data:
Reply from
208.71.44.31: bytes=32 time=197ms TTL=50
Ping statistics for
208.71.44.31:
Packets: Sent = 1, Received = 1, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 197ms, Maximum = 197ms, Average = 197ms
C:\Users\Jean>ping -n 1 98.139.126.20
Pinging 98.139.126.20 with 32 bytes of data:
Reply from
98.139.126.20: bytes=32 time=175ms TTL=53
Ping statistics for
98.139.126.20:
Packets: Sent = 1, Received = 1, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 175ms, Maximum = 175ms, Average = 175ms
C:\Users\Jean>ping -n 1 67.195.141.200
Pinging 67.195.141.200 with 32 bytes of data:
Reply from
67.195.141.200: bytes=32 time=175ms TTL=53
Ping statistics for
67.195.141.200:
Packets: Sent = 1, Received = 1, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 175ms, Maximum = 175ms, Average = 175ms
C:\Users\Jean>ping -n 1 67.195.141.201
Pinging 67.195.141.201 with 32 bytes of data:
Reply from
67.195.141.201: bytes=32 time=175ms TTL=53
Ping statistics for
67.195.141.201:
Packets: Sent = 1, Received = 1, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 175ms, Maximum = 175ms, Average = 175ms
Nevertheless, other public DNS service that also set nodes in Hong
Kong, such as DNS Advantage and Norton DNS do not have this problem
for Yahoo Hong Kong (
hk.yahoo.com). The result gathered from other DNS
are listed as the follows: (DNS Advantage as an example)
C:\Users\Jean>nslookup
hk.yahoo.com 156.154.71.1
Server:
rdns2.ultradns.net
Address: 156.154.71.1
Non-authoritative answer:
Name:
hki-ycpi-uno.gycpi.b.yahoodns.net
Addresses: 124.108.82.79
124.108.82.78
Aliases:
hk.yahoo.com
geoycpi-uno.gycpi.b.yahoodns.net
fo-hki-ycpi-uno.gycpi.b.yahoodns.net
C:\Users\Jean>ping -n 1 124.108.82.79
Pinging 124.108.82.79 with 32 bytes of data:
Reply from
124.108.82.79: bytes=32 time=2ms TTL=55
Ping statistics for
124.108.82.79:
Packets: Sent = 1, Received = 1, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 2ms, Maximum = 2ms, Average = 2ms
C:\Users\Jean>ping -n 1 124.108.82.78
Pinging 124.108.82.78 with 32 bytes of data:
Reply from
124.108.82.78: bytes=32 time=6ms TTL=55
Ping statistics for
124.108.82.78:
Packets: Sent = 1, Received = 1, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 6ms, Maximum = 6ms, Average = 6ms
This problem is inconvenience to Hong Kong users. For one thing, Yahoo
Hong Kong is a famous portal to Hong Konger. For another, Google
Public DNS is a must for some ISPs user that DNSs of ISP have been
hijacked.
Is the issue only found for Yahoo Hong Kong site? Could the problem be
solved?
Jean