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2. Reverse lookup - Wikipedia

   en.wikipedia.org/wiki/Reverse_lookup

   Reverse lookup is a procedure of using a value to retrieve a unique key in an associative array. [1] Applications of reverse lookup include reverse DNS lookup, which provides the domain name associated with a particular IP address, [2] reverse telephone directory, which provides the name of the entity associated with a particular telephone ...

3. Reverse DNS lookup - Wikipedia

   en.wikipedia.org/wiki/Reverse_DNS_lookup

   For example, to do a reverse lookup of the IP address 8.8.4.4 the PTR record for the domain name 4.4.8.8.in-addr.arpa would be looked up, and found to point to dns.google. If the A record for dns.google in turn pointed back to 8.8.4.4 then it would be said to be forward-confirmed.

4. Internet geolocation - Wikipedia

   en.wikipedia.org/wiki/Internet_geolocation

   Some commercial databases have augmented geolocation software with demographic data to enable demographic-type targeting using IP address data. The primary source for IP address data is the regional Internet registries which allocates and distributes IP addresses amongst organizations located in their respective service regions:

5. How to Do a Free Reverse Phone Lookup & the 8 Best Sites to Use

   www.aol.com/finance/free-reverse-phone-lookup-8...

   Here Are 8 of the Best Sites for Free Reverse Phone Lookups There are a lot of sites out there that promise to do these searches for you, and it can be hard to tell which ones are legitimate.

6. WHOIS - Wikipedia

   en.wikipedia.org/wiki/WHOIS

   Lookups of IP address allocations are often limited to the larger Classless Inter-Domain Routing (CIDR) blocks (e.g., /24, /22, /16), because usually only the regional Internet registries (RIRs) and domain registrars run RWhois or WHOIS servers, although RWhois is intended to be run by even smaller local Internet registries, to provide more ...

7. nslookup - Wikipedia

   en.wikipedia.org/wiki/Nslookup

   nslookup operates in interactive or non-interactive mode. When used interactively by invoking it without arguments or when the first argument is - (minus sign) and the second argument is a hostname or Internet address of a name server, the user issues parameter configurations or requests when presented with the nslookup prompt (>).

8. Forward-confirmed reverse DNS - Wikipedia

   en.wikipedia.org/wiki/Forward-confirmed_reverse_DNS

   Forward-confirmed reverse DNS (FCrDNS), also known as full-circle reverse DNS, double-reverse DNS, or iprev, is a networking parameter configuration in which a given IP address has both forward (name-to-address) and reverse (address-to-name) Domain Name System (DNS) entries that match each other. This is the standard configuration expected by ...

9. Quickly find your lost cellphone - AOL

   www.aol.com/article/2015/12/29/quickly-find-your...

   Note: To use it more than once a day, you need to register with your email address. ... Its wake-up function is also free, from anywhere in the world. You can use it free up to two times a day ...