Where or how does traceroute -a get the ASN? For example;
traceroute to
cnet.com
(
64.30.228.118
), 64 hops max, 52 byte packets
1 [AS198949]
192.168.1.1
(
192.168.1.1
) 2.931 ms 2.353 ms 2.399 ms
2 [AS0]
100.64.1.1
(
100.64.1.1
) 3.814 ms 2.975 ms 3.399 ms
3 [AS0]
100.64.0.3
(
100.64.0.3
) 3.443 ms 3.704 ms 3.563 ms
4 [AS20299]
186.176.192.57
(
186.176.192.57
) 5.403 ms 6.128 ms 4.100 ms
5 [AS20299]
186.32.0.217
(
186.32.0.217
) 4.345 ms 4.127 ms 2.770 ms
6 [AS23243]
190.106.192.237
(
190.106.192.237
) 42.834 ms
[AS23243]
190.106.192.240
(
190.106.192.240
) 42.314 ms
[AS23243]
190.106.192.237
(
190.106.192.237
) 43.004 ms
7 [AS0]
198.32.125.207
(
198.32.125.207
) 43.445 ms 45.915 ms 45.521 ms
8 [AS32787]
po110.bs-b.sech-mia4.netarch.akamai.com
(
23.57.103.245
) 53.836 ms 53.614 ms 54.332 ms
9 [AS32787]
ae120.access-a.sech-mia4.netarch.akamai.com
(
23.57.103.249
) 43.512 ms 46.006 ms 44.719 ms
10 [AS32787]
93.191.173.237
(
93.191.173.237
) 182.281 ms 125.422 ms 121.380 ms
11 [AS32787]
a209-200-160-232.deploy.static.akamaitechnologies.com
(
209.200.160.232
) 124.063 ms 124.289 ms 123.992 ms
This seems to happen almost instant, how does it get the ASN instantly?
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