HTTP Header reponses of cache-001.appspot.com is the information we get when HTTP request sent to a server from connecting clients(e.g. chrome, firefox). When you input an address into your browser it sends a request to the server hosting the domain and the server responds. HTTP Header information is not directly displayed by normal web browsers like chrome, firefox etc.
HTTP/1.1 200 OK ETag: "yG3X8g" Date: Tue, 11 Dec 2012 04:24:24 GMT Expires: Fri, 11 Jan 2013 04:24:24 GMT Cache-Control: public, max-age=2678400 Content-Type: text/html Server: Google Frontend Transfer-Encoding: chunked
DNS Record Analysis
There are total 8 records in domain name system (DNS) of cache-001.appspot.com, which includes 1 Address(A) record, 1 IPv6 Address(AAAA) record, 1 Canonical Name(CNAME) record and 5 Mail Exchange(MX) records.
Host Name of the node to which this record pertains
Type Type of resource record in symbolic representation.
IP/Target
TTL Count of seconds that the resource record stays valid.
Extra Info Additional resource record-specific data
appspot.l.google.com
A Address Record: A 32-bit IPv4 address, most commonly used to map hostnames to an IP address of the host, but also used for DNSBLs, storing subnet masks in RFC 1101.
173.194.68.141
74
appspot.l.google.com
AAAA IPv6 Address Record: A 128-bit IPv6 address, most commonly used to map hostnames to an IP address of the host.
74
ipv6: 2607:f8b0:400d:c00::8d
cache-001.appspot.com
CNAME Canonical Name Record: Alias of one name to another: the DNS lookup will continue by retrying the lookup with the new name.
appspot.l.google.com
86400
appspot.l.google.com
MX Mail Exchange Record: Maps a domain name to a list of message transfer agents for that domain.
alt2.gmr-smtp-in.l.google.com
74
pri: 20
appspot.l.google.com
MX Mail Exchange Record: Maps a domain name to a list of message transfer agents for that domain.
alt1.gmr-smtp-in.l.google.com
74
pri: 10
appspot.l.google.com
MX Mail Exchange Record: Maps a domain name to a list of message transfer agents for that domain.
alt4.gmr-smtp-in.l.google.com
74
pri: 40
appspot.l.google.com
MX Mail Exchange Record: Maps a domain name to a list of message transfer agents for that domain.
alt3.gmr-smtp-in.l.google.com
74
pri: 30
appspot.l.google.com
MX Mail Exchange Record: Maps a domain name to a list of message transfer agents for that domain.