HTTP Header reponses of eterna.cmu.edu 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: Tue, 13 Nov 2012 06:55:47 GMT Server: Apache/2.2.12 (Linux/SUSE) Last-Modified: Tue, 13 Nov 2012 03:09:33 GMT ETag: "38ebb0-d1-4ce57bf409540" Accept-Ranges: bytes Content-Length: 209 Content-Type: text/html
DNS Record Analysis
There are total 3 records in domain name system (DNS) of eterna.cmu.edu, which includes 1 Address(A) record, 1 Canonical Name(CNAME) record and 1 Text(TXT) 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
ETERNA.CS.cmu.edu
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.
50.16.215.155
3600
eterna.cmu.edu
CNAME Canonical Name Record: Alias of one name to another: the DNS lookup will continue by retrying the lookup with the new name.
ETERNA.CS.cmu.edu
21600
ETERNA.CS.cmu.edu
TXT Text Record: Originally for arbitrary human-readable text in a DNS record. Since the early 1990s, however, this record more often carries machine-readable data, such as specified by RFC 1464, opportunistic encryption, Sender Policy Framework, DKIM, DMARC DNS-SD.
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