HTTP Header reponses of messenger.yahoo.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 Date: Thu, 30 May 2013 11:45:25 GMT Set-Cookie: B=2kmqus58qeeul&b=3&s=4b; expires=Tue, 31-May-2015 20:00:00 GMT; path=/; domain=.yahoo.com P3P: policyref="http://info.yahoo.com/w3c/p3p.xml", CP="CAO DSP COR CUR ADM DEV TAI PSA PSD IVAi IVDi CONi TELo OTPi OUR DELi SAMi OTRi UNRi PUBi IND PHY ONL UNI PUR FIN COM NAV INT DEM CNT STA POL HEA PRE LOC GOV" Cache-Control: private Connection: close Transfer-Encoding: chunked Content-Type: text/html; charset=utf-8
DNS Record Analysis
There are total 2 records in domain name system (DNS) of messenger.yahoo.com, which includes 1 Address(A) record and 1 Canonical Name(CNAME) record.
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
messenger.fy.b.yahoo.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.
98.139.200.98
300
messenger.yahoo.com
CNAME Canonical Name Record: Alias of one name to another: the DNS lookup will continue by retrying the lookup with the new name.