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  2. Domain Name System blocklist - Wikipedia

    en.wikipedia.org/wiki/Domain_Name_System_blocklist

    A Domain Name System blocklist, Domain Name System-based blackhole list, Domain Name System blacklist (DNSBL) or real-time blackhole list (RBL) is a service for operation of mail servers to perform a check via a Domain Name System (DNS) query whether a sending host's IP address is blacklisted for email spam. [1]

  3. PlayOnline - Wikipedia

    en.wikipedia.org/wiki/PlayOnline

    PlayOnline was originally conceived as an all-in-one solution to house multiple types of game content. [1] At the "Square Millennium" event in Japan in January 2000, Square announced Final Fantasy IX, X and XI, with the last scheduled to release in the summer of 2001, and that they had been working on an online portal called PlayOnline with Japanese telecom company NTT Communications, which ...

  4. Final Fantasy XI - Wikipedia

    en.wikipedia.org/wiki/Final_Fantasy_XI

    Final Fantasy XI is a massively multiplayer online role-playing game (MMORPG), and differs from previous titles in the series in several ways. Unlike the predefined main characters of previous Final Fantasy titles, players are able to customize their characters in limited ways, including selecting from one of five races and choosing their gender, facial style, hair color, body size, job, and ...

  5. 1.1.1.1 - Wikipedia

    en.wikipedia.org/wiki/1.1.1.1

    1.1.1.1 is a free Domain Name System (DNS) service by the American company Cloudflare in partnership with APNIC. [ 7 ] [ needs update ] The service functions as a recursive name server , providing domain name resolution for any host on the Internet .

  6. Blackhole server - Wikipedia

    en.wikipedia.org/wiki/Blackhole_server

    The AS112 project is a group of volunteer name server operators joined in an autonomous system. They run anycasted instances of the name servers that answer reverse DNS lookups for private network and link-local addresses sent to the public Internet. These queries are ambiguous by their nature, and cannot be answered correctly.

  7. Wildcard DNS record - Wikipedia

    en.wikipedia.org/wiki/Wildcard_DNS_record

    A wildcard DNS record is a record in a DNS zone that will match requests for non-existent domain names. A wildcard DNS record is specified by using a * as the leftmost label (part) of a domain name, e.g. *.example.com. The exact rules for when a wildcard will match are specified in RFC 1034, but the rules are neither intuitive nor clearly ...

  8. Reserved IP addresses - Wikipedia

    en.wikipedia.org/wiki/Reserved_IP_addresses

    Used for link-local addresses [5] between two hosts on a single link when no IP address is otherwise specified, such as would have normally been retrieved from a DHCP server 172.16.0.0/12 172.16.0.0–172.31.255.255 1 048 576: Private network Used for local communications within a private network [3] 192.0.0.0/24 192.0.0.0–192.0.0.255 256

  9. Domain name registry - Wikipedia

    en.wikipedia.org/wiki/Domain_name_registry

    A domain name registry is a database of all domain names and the associated registrant information in the top level domains of the Domain Name System (DNS) of the Internet that enables third party entities to request administrative control of a domain name. Most registries operate on the top-level and second-level of the DNS.