[outages] Ebay dns record

[Jeremy Chadwick]

Can't reproduce issue from a Comcast residential connection in Silicon
Valley, nor from a co-located server in San Diego.


$ dig @SJC-DNS1.EBAYDNS.COM a www.ebay.com.

; <<>> DiG 9.8.3-P3 <<>> @SJC-DNS1.EBAYDNS.COM a www.ebay.com.
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 34271
;; flags: qr aa rd; QUERY: 1, ANSWER: 6, AUTHORITY: 0, ADDITIONAL: 0
;; WARNING: recursion requested but not available

;; QUESTION SECTION:
;www.ebay.com.                  IN      A

;; ANSWER SECTION:
www.ebay.com.           300     IN      A       66.211.181.161
www.ebay.com.           300     IN      A       66.211.181.181
www.ebay.com.           300     IN      A       66.135.200.161
www.ebay.com.           300     IN      A       66.135.200.181
www.ebay.com.           300     IN      A       66.135.210.61
www.ebay.com.           300     IN      A       66.135.210.181

;; Query time: 17 msec
;; SERVER: 66.135.207.137#53(66.135.207.137)
;; WHEN: Mon Oct  1 12:24:09 2012
;; MSG SIZE  rcvd: 126


$ dig @SJC-DNS2.EBAYDNS.COM a www.ebay.com.

; <<>> DiG 9.8.3-P3 <<>> @SJC-DNS2.EBAYDNS.COM a www.ebay.com.
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 60185
;; flags: qr aa rd; QUERY: 1, ANSWER: 6, AUTHORITY: 0, ADDITIONAL: 0
;; WARNING: recursion requested but not available

;; QUESTION SECTION:
;www.ebay.com.                  IN      A

;; ANSWER SECTION:
www.ebay.com.           300     IN      A       66.135.210.181
www.ebay.com.           300     IN      A       66.211.181.161
www.ebay.com.           300     IN      A       66.211.181.181
www.ebay.com.           300     IN      A       66.135.200.161
www.ebay.com.           300     IN      A       66.135.200.181
www.ebay.com.           300     IN      A       66.135.210.61

;; Query time: 17 msec
;; SERVER: 66.135.207.138#53(66.135.207.138)
;; WHEN: Mon Oct  1 12:24:12 2012
;; MSG SIZE  rcvd: 126


$ dig @SMF-DNS1.EBAYDNS.COM a www.ebay.com.

; <<>> DiG 9.8.3-P3 <<>> @SMF-DNS1.EBAYDNS.COM a www.ebay.com.
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 23132
;; flags: qr aa rd; QUERY: 1, ANSWER: 6, AUTHORITY: 0, ADDITIONAL: 0
;; WARNING: recursion requested but not available

;; QUESTION SECTION:
;www.ebay.com.                  IN      A

;; ANSWER SECTION:
www.ebay.com.           300     IN      A       66.211.181.161
www.ebay.com.           300     IN      A       66.211.181.181
www.ebay.com.           300     IN      A       66.135.200.161
www.ebay.com.           300     IN      A       66.135.200.181
www.ebay.com.           300     IN      A       66.135.210.61
www.ebay.com.           300     IN      A       66.135.210.181

;; Query time: 37 msec
;; SERVER: 66.135.223.137#53(66.135.223.137)
;; WHEN: Mon Oct  1 12:24:15 2012
;; MSG SIZE  rcvd: 126


$ dig @SMF-DNS2.EBAYDNS.COM a www.ebay.com.

; <<>> DiG 9.8.3-P3 <<>> @SMF-DNS2.EBAYDNS.COM a www.ebay.com.
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 10577
;; flags: qr aa rd; QUERY: 1, ANSWER: 6, AUTHORITY: 0, ADDITIONAL: 0
;; WARNING: recursion requested but not available

;; QUESTION SECTION:
;www.ebay.com.                  IN      A

;; ANSWER SECTION:
www.ebay.com.           300     IN      A       66.135.200.161
www.ebay.com.           300     IN      A       66.135.200.181
www.ebay.com.           300     IN      A       66.135.210.61
www.ebay.com.           300     IN      A       66.135.210.181
www.ebay.com.           300     IN      A       66.211.181.161
www.ebay.com.           300     IN      A       66.211.181.181

;; Query time: 34 msec
;; SERVER: 66.135.215.5#53(66.135.215.5)
;; WHEN: Mon Oct  1 12:24:17 2012
;; MSG SIZE  rcvd: 126


Nameserver list:

;; QUESTION SECTION:
;ebay.com.                      IN      NS

;; ANSWER SECTION:
ebay.com.               70893   IN      NS      smf-dns2.ebaydns.com.
ebay.com.               70893   IN      NS      sjc-dns1.ebaydns.com.
ebay.com.               70893   IN      NS      smf-dns1.ebaydns.com.
ebay.com.               70893   IN      NS      sjc-dns2.ebaydns.com.

;; ADDITIONAL SECTION:
sjc-dns1.ebaydns.com.   65373   IN      A       66.135.207.137
smf-dns1.ebaydns.com.   64711   IN      A       66.135.223.137
sjc-dns2.ebaydns.com.   64216   IN      A       66.135.207.138
smf-dns2.ebaydns.com.   66428   IN      A       66.135.215.5


SOA for ebay.com does indicate, assuming serial is to be interpreted in
the usual YYYYMMDDnn format, that they haven't changed anything in ~2
days.

;; ANSWER SECTION:
ebay.com.               3600    IN      SOA     sjc-dns1.ebaydns.com.  hostmaster.ebay.com. 2012092800 3600 1800 604800 86400


Traceroute to any of the above DNS servers is worthless, as they appear
to drop ICMP at the immediate borders of their networks.

-- 
| Jeremy Chadwick                                   jdc at koitsu.org |
| UNIX Systems Administrator                http://jdc.koitsu.org/ |
| Mountain View, CA, US                                            |
| Making life hard for others since 1977.             PGP 4BD6C0CB |

On Mon, Oct 01, 2012 at 03:17:33PM -0400, Christina Klam wrote:
> None of our ISPs' DNS servers can reach ebay.  Expanding on that list,
> it appears that the only DNS servers able to dig ebay are the ones that
> cache.  Is anyone else seeing this?
> 
> 
> -- Christina
> Christina Klam
> Network Administrator
> Institute for Advanced Study
> Email:  cklam at ias.edu
> 
> Einstein Drive          Telephone: 609-734-8154
> Princeton, NJ 08540     Fax:  609-951-4418
> 
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