iserp.lu

Delegation
Authoritative answer
Related hostnames

DNS delegation of iserp.lu updated: May 24, 2013 12:50:17 AM

Delegation

step	query	auth	servers
1	iserp.lu.	.	(h,d,j,i,c,a,e,g,k,m,f,l,b).root-servers.net.
2	iserp.lu.	lu.	(g,p,j,k,i,ns1,ns5).dns.lu.
3	iserp.lu.	iserp.lu.	athena.uni.lu. ns1.restena.lu.

We pick h.root-servers.net, one of the 13 root servers (1), and ask it about iserp.lu and learn that lu is delegated to seven name servers (2), so we ask g.dns.lu where we learn that iserp.lu is delegated to two name servers, including athena.uni.lu (3), so we ask that one and get the following answer:

Authoritative answer

ANSWER for iserp.lu.
iserp.lu.	172800	SOA	athena.uni.lu. michel\.carpentier.uni.lu. ( 2013051901 300 900 1209600 900 )
	172800	RRSIG	\# 92 000605020002a30051a67a6251994b625b49056973657270026c7500ad57eef30b9217acf2d76714b851a5e01c6f2d6655d77c48f61839a86457d8d53069ba4138c479719928d0a43bd5183b6e00b9ebe913a3e63b27b8a0417de437
	172800	NS	udns1.ultradns.net.
	172800	NS	athena.uni.lu.
	172800	NS	udns2.ultradns.net.
	172800	NS	ns1.restena.lu.
	172800	RRSIG	\# 92 000205020002a30051a67a6251994b625b49056973657270026c750053eaaa020e1472575b92d6585155226c412bcab1e6fc0eae6056ab286d7778febe1f08f322a80bcc21c3f68a29cdca82409288f194686144611154a4cd01cc58
	172800	MX	10 iserpmail.iserp.lu.
	172800	RRSIG	\# 92 000f05020002a30051a67a6251994b625b49056973657270026c7500b02345fddfbc54122a54c0734152395dcd160061bb895aeee66b6bbe3133ed87f5a06e8879215670244f9dc4254166b40e9b1775a44aec704b0e174b8c26afdc
	900	NSEC	\# 23 03777777056973657270026c7500000722010000000380
	900	RRSIG	\# 92 002f05020000038451a67a6251994b625b49056973657270026c7500b87c1c7fba024f56c6bcb2211b0771eab2819d34eb1ade5368099a9a73060af747e83ee733fdfb8d45cc319ce91210b6f61ed87afc4146386748829c26f097e5
	14400	DNSKEY	\# 74 01000305050100000001c9863c3360412831816259c341972de1b53429aa9594e418bca86187212a719b032e2ff1c239759836cde554d603072385709b5241ad134411cda3adc6ae19dd
	14400	DNSKEY	\# 173 010103050501000000010b9d9d107b51530b21e71fbdeb1321015b9115489065a8f972ca307aa4c85a753df5fb5be6a9e8b78b5f5a3797bcfda08a5d86303a84187032ca7303bc9f042c7cef736b045f2d00c51db053597811c30053020727ba6bc5fcc591f7599519405031944d940c645d31cbcaef407452d44f2f543b25f678ae795de3d75ac742972df836dd11bb016f1072c79ed05bd87e310f3b0ba2835240c1f504dee7600a2df7c47f
	14400	RRSIG	\# 191 003005020000384051a67a6251994b62349e056973657270026c75000ac020cf2a5a04b40b7f83bc890ed2ab1daccff6e1e72cb0e29cf9e3d4016230ea9da05d8982a03b36a87983248d271348ded2beb3a086ec0308a9060023ac28f57bf1f72e42a6e959756b67c24b45af59df4bdf41ac81f9c2a62daa71182215cf2c2bc9f876f159f1d3c26b8e0b70aa496073618f4c04df0c96eb3da0a5ef77b371e878f31a69388b4ae6213ca223a5a003a70ae6157ae66c767473222471469ecfa1
	14400	RRSIG	\# 92 003005020000384051a67a6251994b625b49056973657270026c7500207c935df9047dcca6c6c606868c9883cce69672b86da0449cc11767d443f824f4fbb17ec8597678865ac542c78c72bf07c2e1df670fe07c9dcd45d272715ed9
ADDITIONAL for iserp.lu.
athena.uni.lu.	172800	A	158.64.76.51

lu. net. uni.lu. dns.lu. i.dns.lu. iserp.lu. k.dns.lu. j.dns.lu. p.dns.lu. g.dns.lu. restena.lu. ns5.dns.lu. ns1.dns.lu. ultradns.net. athena.uni.lu. ns1.restena.lu. root-servers.net. m.root-servers.net. a.root-servers.net. j.root-servers.net. h.root-servers.net. d.root-servers.net. i.root-servers.net. l.root-servers.net. k.root-servers.net. g.root-servers.net. udns2.ultradns.net. f.root-servers.net. iserpmail.iserp.lu. c.root-servers.net. udns1.ultradns.net. b.root-servers.net. e.root-servers.net.
whois lu
whois net
whois uni.lu
whois dns.lu
whois iserp.lu
whois restena.lu
whois ultradns.net
whois root-servers.net

whois iserp.lu
domain info api iserp.lu

Iserp.lu is a domain controlled by four domain name servers at ultradns.net, uni.lu and restena.lu having a total of five IP numbers. Two of them are on the same IP network. Incoming mail for iserp.lu is handled by one mail server at iserp.lu themselves. We are missing the IP:s of one server: iserpmail.iserp.lu.

Restopolis.lu, convatecconnects.com, trythegreatcourses.com, janetsflowerfashions.com, calvertgiving.org and at least 185 other hosts share name servers with this domain. Ofcanz.govt.nz, police.govt.nz, 111.govt.nz, policeact.govt.nz, newcops.co.nz and at least twelve other hosts share name servers under another name with this domain. Iserpmail.iserp.lu are hosts under this domain.

Also check www.iserp.lu.

The name server athena.uni.lu
Most of the about twenty domains that use the name server athena.uni.lu use the two name servers ns1.restena.lu and athena.uni.lu together (example: cest.lu, cipu.lu and csc.lu ).

The name server udns2.ultradns.net
There are several thousand of domains that use the name server udns2.ultradns.net.

Three quarter of those use the two name servers udns1 and udns2.ultradns.net together, hereafter referred to as "name server group 1", (example: hong22.net, singlesolution1031.org and titanbet.com ).
Six percent of them use the eight name servers pdns5.ultradns.info, pdns1.ultradns.net, pdns2.ultradns.net, udns1.ultradns.net, udns2.ultradns.net, pdns3.ultradns.org, pdns4.ultradns.org and pdns6.ultradns.co.uk together (example: urgenteffectresolution.com, plastic-moulds.co.uk and bwfinanceadvice.com ).
The name server ns1.restena.lu
There are more than two hundred domains that use the name server ns1.restena.lu.

Two thirds of those use the three name servers ns1, ns2 and ns3.restena.lu together, hereafter referred to as "name server group 2", (example: rest.restena.lu, logopedie.lu and 149.64.158.in-addr.arpa ).
Eight of them use the three name servers ns.men.lu, ns1.restena.lu and ns2.restena.lu together (example: script.lu, formation-continue.lu and men.lu ).
Eight of them use the four name servers ns.cte.lu, ns1.restena.lu, ns2.restena.lu and ns3.restena.lu together (example: cyberlycee.lu, clee.lu and cte.lu ).
The three name servers ns1, ns2 and ns3.restena.lu together
Eight percent of the more than two hundred domains that use name server group 2 point only to the IP number 158.64.1.39 (example: ldh.lu, uell.lu and cdaic.lu ).

The two name servers udns1 and udns2.ultradns.net together
Four percent of the several thousand of domains that use name server group 1 point only to the IP number 64.70.56.99 (example: dodgeserviekansascity.com, tedbrittford.com and crestwooddodge.net ).