a.co

• Delegation
• Authoritative answer
• Related hostnames

Delegation

Authoritative answer

ANSWER for a.co.
a.co.	900	A	207.171.166.22
	900	A	72.21.206.80
	900	A	72.21.210.29
	900	NS	pdns2.ultradns.net.
	900	NS	pdns1.ultradns.net.
	900	NS	pdns6.ultradns.co.uk.
	900	NS	pdns5.ultradns.info.
	900	NS	pdns4.ultradns.org.
	900	NS	pdns3.ultradns.org.
	900	SOA	dns-external-master.amazon.com. root.amazon.com. ( 2 28800 900 604800 900 )

Related hostnames

A.co is a domain controlled by six domain name servers at ultradns.net, ultradns.info, ultradns.org and ultradns.co.uk having a total of twelve IP numbers. All twelve of them are on different IP networks. A.co has three IP numbers (72.21.210.29, 207.171.166.22, 72.21.206.80). Two of them are on the same IP network.

Staticamzn.com, audibled.net, shops-amazon.com, endls.com, amystreetradio.com and at least 187 other hosts point to the same IP. Experiencerevivio.com, daplia.com, haycapitalbbq.com, geappliancesonline.com, fwawebinar.com and at least 93 other hosts share name servers with this domain. Mysql.com, virtualbox.org, iplanet.com, oracle.mobi, peoplesoft.com and at least 20 other hosts share name servers under another name with this domain. S.a.co, so.a.co, www.a.co, a.a.co, r.a.co and at least two other hosts are hosts under this domain. A.is, a.vu, a.pn, a.gp, a.md and at least 140 other hosts are similar domain names.

Also check www.a.co.

A.co is hosted on three servers in Seattle, WA, United States even though the hostname implies Colombia.

The two IP numbers 72.21.206.80 and 207.171.166.22 together

Most of the more than a thousands host names that point to the two IP numbers 72.21.206.80 and 207.171.166.22 together, hereafter referred to as "IP group 1", use the three name servers ns-1, ns-2 and ns-3.amazon.com together (example: amazongateway.com, amazon-reviewboard.com and awmazon.com ).

The IP number 72.21.206.80

Most of the more than two thousand host names that point to the IP number 72.21.206.80 point to IP group 1 (example: gadgetsamazon.com, aw-amazon.com and tool-crib.com ).

The name server pdns4.ultradns.org

Most of the several thousand of domains that use the name server pdns4.ultradns.org use the six name servers pdns5.ultradns.info, pdns1.ultradns.net, pdns2.ultradns.net, pdns3.ultradns.org, pdns4.ultradns.org and pdns6.ultradns.co.uk together, hereafter referred to as "name server group 1", (example: alafiaconduits.org, rewardworldwide.com and p90xplusreviews.info ).

The IP number 72.21.210.29

There are more than hundred host names that point to the IP number 72.21.210.29.

• Two thirds of those point to the three IP numbers 72.21.206.80, 72.21.210.29 and 207.171.166.22 together (example: kindledirectpublishing.com, www.amizon.com and imdb.de ).
• Every fifth of them point to the two IP numbers 72.21.210.29 and 207.171.166.22 together (but not 72.21.206.80 ) (example: audibled.com, escapetraffic.com and www.soundunwound.com ).
• Nine of them point to the two IP numbers 72.21.206.80 and 72.21.210.29 together (but not 207.171.166.22 ) (example: www.amazon-lawn.net, aws.amazonaws.com and www.amazon.co ).

The six name servers pdns5.ultradns.info, pdns1.ultradns.net, pdns2.ultradns.net, pdns3.ultradns.org…

There are several thousand of domains that use name server group 1.

• Every fifth of those point only to the IP number 208.75.208.172 (example: ibxdance.com, onefixedwheel.com and caterracin.com ).
• Every fifth of them point only to the IP number 72.52.4.95 (example: mallardlakeassociation.com, psychedellicnomad.com and stevemarriottartist.com ).
• Eight percent of them point only to the IP number 204.74.99.100 (example: expidia.ca, nhoubank.com and seattlehotel.com ).

The name server pdns6.ultradns.co.uk

Four percent of the several thousand of domains that use the name server pdns6.ultradns.co.uk use the two name servers pdns5.ultradns.info and pdns6.ultradns.co.uk together (example: arabictranslationexpert.com, housecaresitters.com and yola-1251464806341.com ).

The name server pdns1.ultradns.net

Three percent of the several thousand of domains that use the name server pdns1.ultradns.net use the four name servers pdns1.ultradns.net, pdns2.ultradns.net, pdns3.ultradns.org and pdns4.ultradns.org together (example: orangecountygayrunners.com, ranchofuck.com and westcoastpornqueens.com ).