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  2. Classless Inter-Domain Routing - Wikipedia

    en.wikipedia.org/wiki/Classless_Inter-Domain_Routing

    Shorter CIDR prefixes match more addresses, while longer prefixes match fewer. In the case of overlaid CIDR blocks, an address can match multiple CIDR prefixes of different lengths. CIDR is also used for IPv6 addresses and the syntax semantic is identical. The prefix length can range from 0 to 128, due to the larger number of bits in the address.

  3. Wikipedia:Administrators' guide/Blocking/Tools - Wikipedia

    en.wikipedia.org/wiki/Wikipedia:Administrators...

    Simply enter the range at Special:Contributions. You can also do a wildcard search (e.g. 83.217.178.*) using the Contribsrange gadget gadget. Enable "Allow /16, /24 and /27 – /32 CIDR ranges" at Special:Preferences#mw-prefsection-gadgets under "Advanced". Then type in any CIDR range into Special:Contribs

  4. Template:IP range calculator - Wikipedia

    en.wikipedia.org/wiki/Template:IP_range_calculator

    The result uses CIDR notation and can be used by an administrator to block a range of IP addresses. The template can be used by editing any page, inserting the template, and previewing the result. There is no need to save the edit.

  5. Supernetwork - Wikipedia

    en.wikipedia.org/wiki/Supernetwork

    The ISP might then assign subnetworks to each of their downstream clients, e.g., Customer A will have the range 172.1.1.0 to 172.1.1.255, Customer B would receive the range 172.1.2.0 to 172.1.2.255 and Customer C would receive the range 172.1.3.0 to 172.1.3.255, and so on. Instead of an entry for each of the subnets 172.1.1.x and 172.1.2.x, etc ...

  6. Template:IPnr - Wikipedia

    en.wikipedia.org/wiki/Template:IPnr

    Such a range cannot be written as a single CIDR range, but consists of two CIDR ranges, i.e. 123.123.123.0/24 and 123.123.124.0/24. Please note that this is a very simple example, much more complicated cases do exist in reality.

  7. Longest prefix match - Wikipedia

    en.wikipedia.org/wiki/Longest_prefix_match

    [2] For example, consider this IPv4 forwarding table (CIDR notation is used): 192.168.20.16/28 192.168.0.0/16 When the address 192.168.20.19 needs to be looked up, both entries in the forwarding table "match". That is, both entries contain the looked up address.

  8. Talk:Classless Inter-Domain Routing - Wikipedia

    en.wikipedia.org/wiki/Talk:Classless_Inter...

    Both of these are not really CIDR Calculators. A CIDR calculator needs to tell you if your CIDR is valid and then do the expansion and show the mask the range and stuff. These two are subneting calculators. The second does not really work. The first would be OK for the subneting article but someone can already see all these tables in the article .

  9. Wikipedia : Blocking IP addresses

    en.wikipedia.org/wiki/Wikipedia:Blocking_IP...

    Block lengths should typically range from several weeks for dynamic IPs and short term Tor nodes, up to several years for long term proxies hosted on static IP addresses. Administrators who block open proxies should attempt to record in the block log or on the user talk page how to verify whether the IP address is still an open proxy at a ...