a21.com

Domain

Summary

a21.com is delegated to five nameservers, however two delegated nameservers are missing in the zone and one other nameserver is listed. Two nameservers have the same IP number. Two of them are on the same IP network. Incoming mail for a21.com is handled by three mailservers. Two of them are on the same IP network. scalehelis.com share both nameservers and mailservers with this domain. co.il, ac.il, net.il, al.org, nic.cl and at least 60 other hosts share nameservers with this domain. pvm.a21.com are subdomains to this hostname. Reputation is not yet known.

Ratings

Automatic review of a21.com
a21.com has been automatically reviewed at 2010-01-08 by robtex

Check	Result
NS on different IP networks	YES
NS delegation consistent with zone		NO
Listed in DMOZ		NO
Listed in Alexa top 100000		NO
Good WOT rating		NO

Total score 10/50 normalized to 1.5 stars

This is experimental beta, more checks are added shortly

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DNS Records

Base	Record	Name		IP	Reverse	Route	AS
a21.com	ns-soa	ns.lah1.vix.com		204.152.188.234 United States		204.152.184.0/21 ISC	AS1280 ISC- Internet Systems Consortium, Inc.
	ns	ns2.isc-sns.com		38.103.2.1 United States		38.0.0.0/8 Cogent	AS174 COGENT /PSI
		ns1.isc-sns.net		72.52.71.1 United States		72.52.71.0/24	AS6939 HURRICANE Electric
		ns3.isc-sns.info		63.243.194.1 United States		63.243.128.0/17 Globeinternet - customers Teleglobe Canada Inc. 1000, rue de La Gauchetiere ouest Montreal, QC H3B 4X5 Canada	AS6453 GLOBEINTERNET TATA Communications 1441 Carrie-Derick Montreal, Quebec Canada H3C 4S9
		ns1.gnac.com (only in delegation)		209.182.216.75 United States	ns1.gnac.net	209.182.192.0/18 Global Networking and Computing	AS8146 GNAC-RWC Certainty Solutions AS in Redwood City
		ns-ext.isc.org (only in zone)		204.152.184.64 United States		204.152.184.0/21 ISC	AS1280 ISC- Internet Systems Consortium, Inc.
		ns-ext.vix.com (only in delegation)		204.152.184.64 United States	ns-ext.isc.org
	mx	10	mol.redbarn.org	204.152.188.42 United States
		30	mx1.nominum.com	64.18.6.14 United States	s7a1.psmtp.com	64.18.6.0/24 LLNW cust	AS26910 Postini Network
		20	mx2.nominum.com	64.18.6.13 United States	s7a2.psmtp.com	64.18.6.0/24 LLNW cust	AS26910 Postini Network
com	ns-soa	a.gtld-servers.net		192.5.6.30 United States		192.5.6.0/24 VeriSign Route	AS36621 VERISIGN-AS VeriSign, Inc
	ns	a.gtld-servers.net		192.5.6.30 United States		192.5.6.0/24 VeriSign Route	AS36621 VERISIGN-AS VeriSign, Inc
		b.gtld-servers.net		192.33.14.30 United States		192.33.14.0/24 VeriSign Route	AS26415 VERISIGN-AS VeriSign, Inc
		c.gtld-servers.net		192.26.92.30 United States		192.26.92.0/24 VeriSign Route	AS36619 VERISIGN-AS VeriSign, Inc
		d.gtld-servers.net		192.31.80.30 United States		192.31.80.0/24 VeriSign Route	AS36617 VERISIGN-AS VeriSign, Inc
		e.gtld-servers.net		192.12.94.30 United States		192.12.94.0/24 VeriSign Route	AS36629 VERISIGN-AS VeriSign, Inc
		f.gtld-servers.net		192.35.51.30 United States		192.35.51.0/24 VeriSign Route	AS36620 VERISIGN-AS VeriSign, Inc
		g.gtld-servers.net		192.42.93.30 United States		192.42.93.0/24 VeriSign Route	AS36624 VERISIGN-AS VeriSign, Inc
		h.gtld-servers.net		192.54.112.30 United States		192.54.112.0/24 VeriSign Route	AS36623 VERISIGN-AS VeriSign, Inc
		i.gtld-servers.net		192.43.172.30 United States		192.43.172.0/24 VeriSign Route	AS36625 VERISIGN-AS VeriSign, Inc
		j.gtld-servers.net		192.48.79.30 United States		192.48.79.0/24 VeriSign Route	AS36626 VERISIGN-AS VeriSign, Inc
		k.gtld-servers.net		192.52.178.30 United States		192.52.178.0/24 VeriSign Route	AS36622 VERISIGN-AS VeriSign, Inc
		l.gtld-servers.net		192.41.162.30 United States		192.41.162.0/24 VeriSign Route	AS36628 VERISIGN-AS VeriSign, Inc
		m.gtld-servers.net		192.55.83.30 United States		192.55.83.0/24 VeriSign Route	AS36618 VERISIGN-AS VeriSign, Inc