| Domain | Name Servers |
| . | root server |
| au | au root servers |
| com.au | au root servers |
| theage.com.au | Akamai name servers below |
ns1-207.akam.net. 20727 IN A 193.108.91.207
usw4.akam.net. 9913 IN A 64.211.42.196
usc4.akam.net. 10282 IN A 96.17.169.10
usw2.akam.net. 14102 IN A 64.211.42.196
ns1-179.akam.net. 20727 IN A 193.108.91.179
asia2.akam.net. 12896 IN A 63.150.131.81
eur5.akam.net. 10282 IN A 62.41.62.233
use5.akam.net. 18317 IN A 81.52.250.132
I believe this table remain the same across the various continents and converts the customers domain name to a akamazied name in the g.akamai.net subdomain. No metric are used at this point and its purely a static mapping. In this case:
;; ANSWER SECTION:
www.theage.com.au. 300 IN CNAME dsa.f2.com.au.edgesuite.net.
dsa.f2.com.au.edgesuite.net. 17178 IN CNAME a1040.g.akamai.net.
;; AUTHORITY SECTION:
g.akamai.net. 1000 IN SOA n0g.akamai.net. hostmaster.akamai.com. 1313505437 1000 1000 1000 1800
When you now query the name servers for the g.akamai.net you then get a metric enabled veiw of the network and get pointed to the closest server. The traceroutes in each of the sections below shows that it there is onlyl 3-4 hops between source and destination.
See this and this for further info.
Australia
; <<>> DiG 9.6.1-P1 <<>> www.theage.com.au
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 44302
;; flags: qr rd ra; QUERY: 1, ANSWER: 4, AUTHORITY: 9, ADDITIONAL: 6
;; QUESTION SECTION:
;www.theage.com.au. IN A
;; ANSWER SECTION:
www.theage.com.au. 300 IN CNAME dsa.f2.com.au.edgesuite.net.
dsa.f2.com.au.edgesuite.net. 18657 IN CNAME a1040.g.akamai.net.
a1040.g.akamai.net. 20 IN A 144.135.8.238
a1040.g.akamai.net. 20 IN A 144.135.8.239
;; AUTHORITY SECTION:
g.akamai.net. 1004 IN NS n6g.akamai.net.
g.akamai.net. 1004 IN NS n5g.akamai.net.
g.akamai.net. 1004 IN NS n3g.akamai.net.
g.akamai.net. 1004 IN NS n7g.akamai.net.
g.akamai.net. 1004 IN NS n8g.akamai.net.
g.akamai.net. 1004 IN NS n2g.akamai.net.
g.akamai.net. 1004 IN NS n1g.akamai.net.
g.akamai.net. 1004 IN NS n0g.akamai.net.
g.akamai.net. 1004 IN NS n4g.akamai.net.
;; ADDITIONAL SECTION:
n1g.akamai.net. 425 IN A 61.9.193.171
n7g.akamai.net. 1284 IN A 61.9.193.171
n4g.akamai.net. 1284 IN A 61.9.193.173
n0g.akamai.net. 1080 IN A 125.56.205.28
n2g.akamai.net. 1622 IN A 125.56.205.45
n5g.akamai.net. 379 IN A 61.9.193.171
;; Query time: 246 msec
;; SERVER: 10.202.200.215#53(10.202.200.215)
;; WHEN: Wed Aug 17 00:12:37 2011
;; MSG SIZE rcvd: 395
The traceroute to 144.135.8.238 is then
1 TenGigabitEthernet0-12-0-2.exi-core1.Melbourne.telstra.net (203.50.80.1) 4 msec 0 msec 4 msec
2 Bundle-Pos3.chw-core2.Sydney.telstra.net (203.50.11.14) 16 msec 12 msec 12 msec
3 TenGigabitEthernet8-1.pic2.Sydney.telstra.net (203.50.20.185) 12 msec 12 msec 16 msec
4 telstr810.lnk.telstra.net (165.228.132.18) 20 msec 12 msec 20 msec
5 144.135.8.239 16 msec 16 msec 16 msecEurope (Germany)
; <<>> DiG 9.2.1 <<>> @dns.taide.net www.theage.com.au a
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 6203
;; flags: qr rd ra; QUERY: 1, ANSWER: 4, AUTHORITY: 9, ADDITIONAL: 0
;; QUESTION SECTION:
;www.theage.com.au. IN A
;; ANSWER SECTION:
www.theage.com.au. 36 IN CNAME dsa.f2.com.au.edgesuite.net.
dsa.f2.com.au.edgesuite.net. 21337 IN CNAME a1040.g.akamai.net.
a1040.g.akamai.net. 20 IN A 193.219.194.8
a1040.g.akamai.net. 20 IN A 193.219.194.11
;; AUTHORITY SECTION:
g.akamai.net. 1276 IN NS n7g.akamai.net.
g.akamai.net. 1276 IN NS n8g.akamai.net.
g.akamai.net. 1276 IN NS n0g.akamai.net.
g.akamai.net. 1276 IN NS n1g.akamai.net.
g.akamai.net. 1276 IN NS n2g.akamai.net.
g.akamai.net. 1276 IN NS n3g.akamai.net.
g.akamai.net. 1276 IN NS n4g.akamai.net.
g.akamai.net. 1276 IN NS n5g.akamai.net.
g.akamai.net. 1276 IN NS n6g.akamai.net.
;; Query time: 1 msec
;; SERVER: 193.219.193.135#53(dns.taide.net)
;; WHEN: Tue Aug 16 16:15:57 2011
;; MSG SIZE rcvd: 299The traceroute to 193.219.194.8 is
traceroute to 193.219.194.8 (193.219.194.8), 30 hops max, 38 byte packets
1 NO-NIT-VN-15 (193.219.193.115) 0.385 ms 0.237 ms 0.331 ms
2 NO-NIT-TN-2 (193.219.193.132) 0.498 ms 0.403 ms 0.401 ms
3 193.219.194.8 (193.219.194.8) 0.296 ms 0.246 ms 0.404 ms
USA; <<>> DiG 9.3.2-P2.1 <<>> any www.theage.com.au
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 18494
;; flags: qr rd ra; QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION:
;www.theage.com.au. IN ANY
;; ANSWER SECTION:
www.theage.com.au. 256 IN CNAME dsa.f2.com.au.edgesuite.net.
dsa.f2.com.au.edgesuite.net. 21556 IN CNAME a1040.g.akamai.net.
a1040.g.akamai.net. 20 IN A 173.223.52.154
a1040.g.akamai.net. 20 IN A 173.223.52.169
;; Query time: 1 msec
;; SERVER: 204.152.204.100#53(204.152.204.100)
;; WHEN: Tue Aug 16 08:28:34 2011
;; MSG SIZE rcvd: 137 Traceroute Results:
1 10.31.6.1 (10.31.6.1) 8.040 ms 14.992 ms 10.738 ms
2 66.63.169.249 (66.63.169.249) 45.798 ms 51.654 ms 0.626 ms
3 96.44.180.246 (96.44.180.246) 0.485 ms 0.441 ms 0.281 ms
4 akamai.com.any2ix.coresite.com (206.223.143.82) 0.396 ms 0.361 ms 0.302 ms
5 a173-223-52-169.deploy.akamaitechnologies.com (173.223.52.169) 0.338 ms 0.248 ms 0.265 ms
grt
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