Reverse DNS / PTR lookup

Related tools

DNS propagation check

WHOIS / RDAP lookup

Port scan + probeing

E-mail DNSBL blacklist check

CIDR calculator

IP to CIDR calculation tool with subnet info. The reverse, CIDR ranges to IP addresses, is also possible. Last but not least, it includes a tool for refactoring groups of IPs, domain names, and/or other CIDR ranges.

PTR lookup of 'ns3.google.com'

IP lookup

1h22m

A

216.239.36.10

1h22m

96h

AAAA

2001:4860:4802:36::a

96h

PTR answers

2001:4860:4802:36::a

24h

PTR

ns3.google.com

24h

216.239.36.10

3h57m

PTR

ns3.google.com

3h57m

Log

+000	Resolving host 'ns3.google.com'
+039	IP's found: ns3.google.com (216.239.36.10), ns3.google.com (2001:4860:4802:36::a)
+039	Multiple IPs to check - public DNS-resolvers will be used (Google and OpenDNS)
+039	Resolving PTR record of '216.239.36.10'
+048	PTR-record resolved in a total of 7ms. Responding DNS-server: 8.8.8.8.
+048	Resolving PTR record of '2001:4860:4802:36::a'
+307	PTR-record resolved in a total of 257ms. Responding DNS-server: 208.67.220.220.

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Shoutouts and credits to: Bootstrap, jQuery, Bootstrap live customizer by Virtuosoft, DnsClient.NET by MichaCo, LazyLoad by Mika Tuupola, the Olson tz database by IANA, Visible earth by NASA, GeoLite2 by MaxMind, Barcoder by Wouter Huysentruit, ICONS8.
json-viewer by alenaksu.

iamrootdottech@gmail.com
Bundgaard - Løvenørnsgade 56, 2tv - DK-8700 Horsens - Denmark

No personal information gathered anywhere. E-mail may be used for login and/or newsletter - will not be sold or used by anyone else but iamroot.tech. Cookies are in use for statistical and useability purposes. Trademarks property of their respective owners. A privacy policy and terms and conditions is availible if you like.