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  2. 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.

  3. Reverse DNS lookup - Wikipedia

    en.wikipedia.org/wiki/Reverse_DNS_lookup

    In computer networks, a reverse DNS lookup or reverse DNS resolution (rDNS) is the querying technique of the Domain Name System (DNS) to determine the domain name associated with an IP address – the reverse of the usual "forward" DNS lookup of an IP address from a domain name. [1]

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  5. Comparison of DNS server software - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_DNS_server...

    Knot DNS is a free software authoritative DNS server by CZ.NIC. Knot DNS aims to be a fast, resilient DNS server usable for infrastructure (root and TLD) and DNS hosting services. Knot DNS supports DNSSEC signing and among others hosts root zone (B, K, and L root name servers ), several top-level domains .

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    help.aol.com/articles/troubleshooting-games-com...

    Games on AOL.com offers hundreds of free online games. Discover solutions to common issues on Games on AOL.com and get back to playing.

  7. Forward-confirmed reverse DNS - Wikipedia

    en.wikipedia.org/wiki/Forward-confirmed_reverse_DNS

    That is, the reverse DNS might verify, but it will usually be part of another domain than the claimed domain name. Using an ISP's mail server as a relay may solve the reverse DNS problem, because the requirement is the forward and reverse lookup for the sending relay have to match, it does not have to be related to the from-field or sending ...

  8. MaraDNS - Wikipedia

    en.wikipedia.org/wiki/MaraDNS

    Deadwood includes built-in "DNS wall" filtering (to protect against external domains which resolve to local IPs), the ability to read and write the cache to a file, DNS-over-TCP support, the ability to optionally reject MX, IPv6 AAAA, and PTR queries, code that stops AR-spoofing attacks, among other features.

  9. Unbound (DNS server) - Wikipedia

    en.wikipedia.org/wiki/Unbound_(DNS_server)

    Unbound is a validating, recursive, and caching DNS resolver product from NLnet Labs. It is distributed free of charge in open-source form under the BSD license . Features