HTTP Header reponses of schema.org 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/1.0 500 Internal Server Error Content-Type: text/plain; charset=UTF-8 Date: Fri, 30 Jan 2015 12:48:34 GMT Server: Google Frontend Content-Length: 114 Alternate-Protocol: 80:quic,p=0.02
DNS Record Analysis
There are total 12 records in domain name system (DNS) of schema.org, which includes 1 Address(A) record, 1 IPv6 Address(AAAA) record, 5 Mail Exchange(MX) records, 4 Name Server(NS) records and 1 Start of Authority(SOA) 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
schema.org
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.
216.58.216.78
281
schema.org
AAAA IPv6 Address Record: A 128-bit IPv6 address, most commonly used to map hostnames to an IP address of the host.
299
ipv6: 2607:f8b0:4009:80a::200e
schema.org
MX Mail Exchange Record: Maps a domain name to a list of message transfer agents for that domain.
alt2.aspmx.l.google.com
3600
pri: 5
schema.org
MX Mail Exchange Record: Maps a domain name to a list of message transfer agents for that domain.
aspmx.l.google.com
3600
pri: 1
schema.org
MX Mail Exchange Record: Maps a domain name to a list of message transfer agents for that domain.
aspmx2.googlemail.com
3600
pri: 10
schema.org
MX Mail Exchange Record: Maps a domain name to a list of message transfer agents for that domain.
alt1.aspmx.l.google.com
3600
pri: 5
schema.org
MX Mail Exchange Record: Maps a domain name to a list of message transfer agents for that domain.
aspmx3.googlemail.com
3600
pri: 10
schema.org
NS Name Server Record: Delegates a DNS zone to use the given authoritative name servers.
ns4.google.com
2985
schema.org
NS Name Server Record: Delegates a DNS zone to use the given authoritative name servers.
ns3.google.com
2985
schema.org
NS Name Server Record: Delegates a DNS zone to use the given authoritative name servers.
ns2.google.com
2985
schema.org
NS Name Server Record: Delegates a DNS zone to use the given authoritative name servers.
ns1.google.com
2985
schema.org
SOA Start of Authority Record: Specifies authoritative information about a DNS zone, including the primary name server, the email of the domain administrator, the domain serial number, and several timers relating to refreshing the zone.
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