I can confirmed that we are seeing this as well: dwhite@quark:~$ dig +trace www.ebay.com ; <<>> DiG 9.7.3 <<>> +trace www.ebay.com ;; global options: +cmd . 76272 IN NS a.root-servers.net. . 76272 IN NS l.root-servers.net. . 76272 IN NS e.root-servers.net. . 76272 IN NS k.root-servers.net. . 76272 IN NS b.root-servers.net. . 76272 IN NS g.root-servers.net. . 76272 IN NS f.root-servers.net. . 76272 IN NS d.root-servers.net. . 76272 IN NS h.root-servers.net. . 76272 IN NS i.root-servers.net. . 76272 IN NS m.root-servers.net. . 76272 IN NS c.root-servers.net. . 76272 IN NS j.root-servers.net. ;; Received 385 bytes from 10.0.1.10#53(10.0.1.10) in 0 ms com. 172800 IN NS m.gtld-servers.net. com. 172800 IN NS g.gtld-servers.net. com. 172800 IN NS b.gtld-servers.net. com. 172800 IN NS d.gtld-servers.net. com. 172800 IN NS j.gtld-servers.net. com. 172800 IN NS e.gtld-servers.net. com. 172800 IN NS l.gtld-servers.net. com. 172800 IN NS a.gtld-servers.net. com. 172800 IN NS c.gtld-servers.net. com. 172800 IN NS f.gtld-servers.net. com. 172800 IN NS h.gtld-servers.net. com. 172800 IN NS i.gtld-servers.net. com. 172800 IN NS k.gtld-servers.net. ;; Received 502 bytes from 192.33.4.12#53(c.root-servers.net) in 21 ms ebay.com. 172800 IN NS sjc-dns1.ebaydns.com. ebay.com. 172800 IN NS sjc-dns2.ebaydns.com. ebay.com. 172800 IN NS smf-dns1.ebaydns.com. ebay.com. 172800 IN NS smf-dns2.ebaydns.com. ;; Received 194 bytes from 192.33.14.30#53(b.gtld-servers.net) in 149 ms ;; connection timed out; no servers could be reached dwhite@quark:~$ dwhite@quark:~$ ping sjc-dns1.ebaydns.com. PING sjc-dns1.ebaydns.com (66.135.207.137) 56(84) bytes of data. ^CFrom 144.232.25.223 icmp_seq=1 Time to live exceeded --- sjc-dns1.ebaydns.com ping statistics --- 1 packets transmitted, 0 received, +1 errors, 100% packet loss, time 0ms dwhite@quark:~$ On 01/17/12 14:20 -0600, Frank Bulk - iName.com wrote:
We've received two calls complaining about access to www.ebay.com. Further checking shows that none of our DNS servers can resolve either www.ebay.com or ebay.com. DIG returns a "timed out". Flushing our caches made no difference, and our upstream provider's DNS servers are acting the same way.
Digging against 8.8.8.8 works fine, but against the 4 NS servers listed for ebay, they don't, probably because their DNS server is all ebaydns.com.
nagios:/tmp# dig A ebay.com @96.31.0.5
; <<>> DiG 9.7.3 <<>> A ebay.com @96.31.0.5 ;; global options: +cmd ;; connection timed out; no servers could be reached nagios:/tmp# dig A ebay.com @167.142.225.5
; <<>> DiG 9.7.3 <<>> A ebay.com @167.142.225.5 ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 41569 ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION: ;ebay.com. IN A
;; Query time: 4433 msec ;; SERVER: 167.142.225.5#53(167.142.225.5) ;; WHEN: Tue Jan 17 14:19:12 2012 ;; MSG SIZE rcvd: 26
nagios:/tmp#
nagios:/tmp# dig NS ebay.com @8.8.8.8
; <<>> DiG 9.7.3 <<>> NS ebay.com @8.8.8.8 ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 58612 ;; flags: qr rd ra; QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION: ;ebay.com. IN NS
;; ANSWER SECTION: ebay.com. 63033 IN NS sjc-dns2.ebaydns.com. ebay.com. 63033 IN NS smf-dns2.ebaydns.com. ebay.com. 63033 IN NS smf-dns1.ebaydns.com. ebay.com. 63033 IN NS sjc-dns1.ebaydns.com.
;; Query time: 37 msec ;; SERVER: 8.8.8.8#53(8.8.8.8) ;; WHEN: Tue Jan 17 14:18:22 2012 ;; MSG SIZE rcvd: 126
nagios:/tmp#
-- Dan White