Whois and reverse dns lookup provided by robtex


DNS delegation of mail.ibit.pu.edu.pk updated:


2mail.ibit.pu.edu.pk.pk.n1.pknic.net.pk. ns3.pknic.net.pk. root-s.pknic.pk. n2.pknic.net.pk.
3mail.ibit.pu.edu.pk.pu.edu.pk.xenon.nexlinx.net. hubble.nexlinx.net.pk. pathfinder.nexlinx.net.pk. columbia.nexlinx.net.
We pick l.root-servers.net, one of the 13 root servers (1), and ask it about mail.ibit.pu.edu.pk and learn that pk is delegated to four name servers (2), so we ask n1.pknic.net.pk where we learn that pu.edu.pk is delegated to four name servers, including xenon.nexlinx.net (3), so we ask that one and get the following answer:

Authoritative answer

ANSWER for mail.ibit.pu.edu.pk.
mail.ibit.pu.edu.pk.3600 A111.68.103.27 mail.ibit.pu.edu.pk points to
3600 MX 20 mail1.pu.edu.pk. mail.ibit.pu.edu.pk use mail1.pu.edu.pk as mail server.
3600 MX 30 mail2.pu.edu.pk. mail.ibit.pu.edu.pk use mail2.pu.edu.pk as mail server.
3600 MX 10 mail.pu.edu.pk. mail.ibit.pu.edu.pk use mail.pu.edu.pk as mail server.
AUTHORITATIVE for mail.ibit.pu.edu.pk.
pu.edu.pk.3600 NS pathfinder.nexlinx.net.pk. pu.edu.pk use pathfinder.nexlinx.net.pk as name server.
3600 NS xenon.nexlinx.net. pu.edu.pk use xenon.nexlinx.net as name server.
3600 NS hubble.nexlinx.net.pk. pu.edu.pk use hubble.nexlinx.net.pk as name server.
3600 NS columbia.nexlinx.net. pu.edu.pk use columbia.nexlinx.net as name server.
ADDITIONAL for mail.ibit.pu.edu.pk.
mail.pu.edu.pk.3600 A111.68.103.27
mail1.pu.edu.pk.3600 A111.68.103.27
mail2.pu.edu.pk.3600 A111.68.103.27
columbia.nexlinx.net.3600 A64.21.85.245

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