Re: Google DNS Oddity

[Chip Marshall via NANOG <nanog () nanog org>]

On 2019-09-06, Jared Mauch <jared () puck nether net> sent:
> You may want to post on dns-operations instead.

Will do.
 
> Can you do a dig +trace www.google.com instead, that would be more
> instructive about what’s happening at each layer of the delegation.

# dig +trace www.google.com. aaaa

; <<>> DiG 9.10.3-P4-Ubuntu <<>> +trace www.google.com. aaaa
;; global options: +cmd
.                       40841   IN      NS      b.root-servers.net.
.                       40841   IN      NS      g.root-servers.net.
.                       40841   IN      NS      k.root-servers.net.
.                       40841   IN      NS      i.root-servers.net.
.                       40841   IN      NS      m.root-servers.net.
.                       40841   IN      NS      c.root-servers.net.
.                       40841   IN      NS      l.root-servers.net.
.                       40841   IN      NS      e.root-servers.net.
.                       40841   IN      NS      d.root-servers.net.
.                       40841   IN      NS      f.root-servers.net.
.                       40841   IN      NS      h.root-servers.net.
.                       40841   IN      NS      j.root-servers.net.
.                       40841   IN      NS      a.root-servers.net.
.                       40841   IN      RRSIG   NS 8 0 518400 20190917050000 20190904040000 59944 . 
W93v8sQLROIXL1qvcezKKnL8XwzzxuFb6VbyV7h+SG27BIgJiOGrNE5q M6ncTYozvKd3tKJ/cQZcnIO9zi9tInPKgVctNF1Fp2FGb8TnFuTkIOMy 
MEVzbWEZrZErcToDRaK1WzlrxBL6gsIfegE8gjC/2XVnKQENZCJ4qgg8 V/u1CKbJGV0nmnVusCZ6pXnkVJDDdvvicaUf0IoxqEONh1h/xKghX14R 
6leOUCJpAtdS0M9eyPeBL5myCm7olOVhi/A+9QjZLv60vefYAF7aREtW 5mEvg/YyNz4dUOHrhz/iRbK/wGIbtyuTpvy3Gg/F2dtrVfJBzobDnGpv 
sFO4xA==
;; Received 525 bytes from 8.8.8.8#53(8.8.8.8) in 1 ms

com.                    172800  IN      NS      a.gtld-servers.net.
com.                    172800  IN      NS      b.gtld-servers.net.
com.                    172800  IN      NS      c.gtld-servers.net.
com.                    172800  IN      NS      d.gtld-servers.net.
com.                    172800  IN      NS      e.gtld-servers.net.
com.                    172800  IN      NS      f.gtld-servers.net.
com.                    172800  IN      NS      g.gtld-servers.net.
com.                    172800  IN      NS      h.gtld-servers.net.
com.                    172800  IN      NS      i.gtld-servers.net.
com.                    172800  IN      NS      j.gtld-servers.net.
com.                    172800  IN      NS      k.gtld-servers.net.
com.                    172800  IN      NS      l.gtld-servers.net.
com.                    172800  IN      NS      m.gtld-servers.net.
com.                    86400   IN      DS      30909 8 2 E2D3C916F6DEEAC73294E8268FB5885044A833FC5459588F4A9184CF 
C41A5766
com.                    86400   IN      RRSIG   DS 8 1 86400 20190919170000 20190906160000 59944 . 
ep9gNcyySwR/AqNOnfjXq3OCw5IwOJnIxU4U25UdZ2ejwbJqLf8ytp68 O5DQz1N/PvrEhi1Wg8XyQHZM+fc38cYhhjG5HMVOcEN3wvifnxTWEwBs 
ay2GxF10TtUpg9TF4Qs2+V8k0ABWwAKIBbSAeZ+C+l5mBg18CCnTgjeg PR+466SgA7sHbzaI9PYK57suhq3uLrphcC2Ti7jmV9V41H5D52gNTiV5 
eQ2BsPo+l5LyLrvusailMOzogav9v4M9bnOSGTcc85nf/wD5/Vo4R4MU OexIxio0NGBl7GeS3zoPKV29CYnfcuZBkD2VBuPKZafxp0nIo4olMznn 
szi9lg==
;; Received 1174 bytes from 199.7.83.42#53(l.root-servers.net) in 60 ms

google.com.             172800  IN      NS      ns2.google.com.
google.com.             172800  IN      NS      ns1.google.com.
google.com.             172800  IN      NS      ns3.google.com.
google.com.             172800  IN      NS      ns4.google.com.
CK0POJMG874LJREF7EFN8430QVIT8BSM.com. 86400 IN NSEC3 1 1 0 - CK0Q1GIN43N1ARRC9OSM6QPQR81H5M9A NS SOA RRSIG DNSKEY 
NSEC3PARAM
CK0POJMG874LJREF7EFN8430QVIT8BSM.com. 86400 IN RRSIG NSEC3 8 2 86400 20190912044627 20190905033627 17708 com. 
kXWtAEptQhH9JpsAJzpvEwEwRtybI/FVl9Hrd1lr/GTkZ3P4clnR7YLB quX4CVf8E0+gEfwf4U2PpmphROV1eHweyycVydvTE8etaDipTpItbtyG 
7Iz/uKjp1TY3RD+qNa6LZ1juEs70aKPsbmEV79rtiTW2kurdgqslP5jH Jg0=
S84BDVKNH5AGDSI7F5J0O3NPRHU0G7JQ.com. 86400 IN NSEC3 1 1 0 - S84CFH3A62N0FJPC5D9IJ2VJR71OGLV5 NS DS RRSIG
S84BDVKNH5AGDSI7F5J0O3NPRHU0G7JQ.com. 86400 IN RRSIG NSEC3 8 2 86400 20190913045601 20190906034601 17708 com. 
bJE7LV1REfTtY1jFj/9qA1CKIDBgCJOTV42tSwf92aqhTAkflM9QFH7/ 3Z5440IkZ8PoWMt9Yn7fn+Q+cTZVnbj071jVpiLNXshhMQbtDC1eJkLz 
AIuATIj+dqWTWQg7vut0oiy0wnJ2ktSgqTFe4JtwRD0lWO6+NgnhbgQD 2yg=
;; Received 776 bytes from 192.43.172.30#53(i.gtld-servers.net) in 74 ms

www-anycast.google.com. 300     IN      AAAA    2001:4860:4802:32::75
www-anycast.google.com. 300     IN      AAAA    2001:4860:4802:34::75
www-anycast.google.com. 300     IN      AAAA    2001:4860:4802:38::75
www-anycast.google.com. 300     IN      AAAA    2001:4860:4802:36::75
;; Received 167 bytes from 216.239.38.10#53(ns4.google.com) in 6 ms


-- 
Chip Marshall <chip () 2bithacker net>