Being as Facebook stated they were committed to using IPv6 I was surprised when testing my setup yesterday to find that there is no longer an AAAA record for them on the DNS.
Anyone else noticed this?
I wonder when they dropped that.
www.facebook.com still has an AAAA record though
$ host www.facebook.com
www.facebook.com is an alias for star.c10r.facebook.com.
star.c10r.facebook.com has address 31.13.66.23
star.c10r.facebook.com has IPv6 address 2a03:2880:2110:cf01:face:b00c:0:9
star.c10r.facebook.com mail is handled by 10 msgin.t.facebook.com.
Heres what I get using DNS lookup in W8
PS C:\Users\Timothy> Resolve-DnsName facebook.com
Name Type TTL Section IPAddress
---- ---- --- ------- ---------
facebook.com A 92 Answer 173.252.110.27
Also tried going to the address you showed - definitely down. Surprising considering that they were extolling the virtues of IPv6
do a lookup on www.facebook.com
Hi Cholzhsuer
I see what you mean, thanks. I still get confused as to how people can put the AAAA record on one part of the domain and yet neglect the other.
PS C:\Users\Timothy> Resolve-DnsName www.facebook.com
Name Type TTL Section NameHost
---- ---- --- ------- --------
www.facebook.com CNAME 20 Answer star.c10r.facebook.com
Name : star.c10r.facebook.com
QueryType : AAAA
TTL : 20
Section : Answer
IP6Address : 2a03:2880:2030:2f01:face:b00c:0:8
Name : star.c10r.facebook.com
QueryType : A
TTL : 20
Section : Answer
IP4Address : 69.171.242.27
Ravenstar68
On the domain name label itself, they should be using a SRV-RR, not an address-type record. Unfortunately for HTTP, most clients are ignorant of SRV records.