[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-1-en-105":3,"doc-seo-571877-105":53,"doc-detail-571877-en":127},{"code":4,"msg":5,"data":6},0,"success",[7,14,19,24,29,34,39,44,49],{"id":8,"doc_module":9,"doc_module_name":10,"category_name":11,"show_sort_weight":12,"slug":13},11,1,"Template","Presentations",90,"presentations",{"id":15,"doc_module":9,"doc_module_name":10,"category_name":16,"show_sort_weight":17,"slug":18},12,"Resumes",80,"resumes",{"id":20,"doc_module":9,"doc_module_name":10,"category_name":21,"show_sort_weight":22,"slug":23},14,"Invoices",70,"invoices",{"id":25,"doc_module":9,"doc_module_name":10,"category_name":26,"show_sort_weight":27,"slug":28},15,"Posters",60,"posters",{"id":30,"doc_module":9,"doc_module_name":10,"category_name":31,"show_sort_weight":32,"slug":33},16,"Social Media",50,"social-media",{"id":35,"doc_module":9,"doc_module_name":10,"category_name":36,"show_sort_weight":37,"slug":38},17,"Forms",40,"forms",{"id":40,"doc_module":9,"doc_module_name":10,"category_name":41,"show_sort_weight":42,"slug":43},18,"Letters",30,"letters",{"id":45,"doc_module":9,"doc_module_name":10,"category_name":46,"show_sort_weight":47,"slug":48},21,"Paper Templates",5,"papers-templates",{"id":50,"doc_module":9,"doc_module_name":10,"category_name":51,"show_sort_weight":4,"slug":52},158,"General","general-158",{"code":4,"msg":54,"data":55},"ok",{"site_id":56,"language":57,"slug":58,"title":59,"keywords":60,"description":61,"schema_data":62,"social_meta":120,"head_meta":122,"extra_data":124,"updated_unix":126},105,"en","cidr-ipv4-cheat-sheet-subnetting","CIDR-IPv4 Cheat Sheet - Subnetting","","CIDR/IPv4 cheat sheet summarizing subnetting fundamentals and reference values for IPv4 ranges. It lists classful address blocks (A through E) with corresponding CIDR prefixes, subnet masks, wildcard masks, and address counts. It also covers reserved ranges such as RFC 1918 private networks and localhost, then explains CIDR notation as a compact form using a slash prefix length. The sheet includes VLSM context and shows decimal-to-binary mappings for subnet masks, wildcard values, and common prefix lengths.",{"@graph":63,"@context":119},[64,80,102],{"@type":65,"itemListElement":66},"BreadcrumbList",[67,71,74,77],{"item":68,"name":69,"@type":70,"position":9},"https://docshare.wps.com","Home","ListItem",{"item":72,"name":10,"@type":70,"position":73},"https://docshare.wps.com/template/",2,{"item":75,"name":11,"@type":70,"position":76},"https://docshare.wps.com/template/presentations/",3,{"item":78,"name":59,"@type":70,"position":79},"https://docshare.wps.com/template/cidr-ipv4-cheat-sheet-subnetting/571877/",4,{"url":78,"name":59,"@type":81,"image":82,"author":87,"headline":59,"publisher":90,"fileFormat":93,"inLanguage":57,"description":61,"dateModified":94,"datePublished":95,"encodingFormat":93,"isAccessibleForFree":96,"interactionStatistic":97},"DigitalDocument",{"url":83,"@type":84,"width":85,"height":86},"https://docshare.wps.com/thumbnails/cidr-ipv4-cheat-sheet-subnetting/571877.png","ImageObject",442,249,{"name":88,"@type":89},"Jake","Person",{"url":68,"name":91,"@type":92},"DocShare","Organization","application/pdf","2026-10-22","2026-10-13",true,{"@type":98,"interactionType":99,"userInteractionCount":101},"InteractionCounter",{"@type":100},"ViewAction",7,{"@type":103,"mainEntity":104},"FAQPage",[105,111,115],{"name":106,"@type":107,"acceptedAnswer":108},"What does CIDR notation mean (e.g., /0 or /10)?","Question",{"text":109,"@type":110},"CIDR notation is a compact representation of an IP address and its routing prefix. It is expressed as a slash followed by a number, such as /0 or /10.","Answer",{"name":112,"@type":107,"acceptedAnswer":113},"Which IPv4 ranges are reserved or commonly used privately?",{"text":114,"@type":110},"The sheet lists reserved ranges including RFC 1918 private blocks (10.0.0.0–10.255.255.255, 172.16.0.0–172.31.255.255, 192.168.0.0–192.168.255.255) and localhost (127.0.0.0–127.255.255.255).",{"name":116,"@type":107,"acceptedAnswer":117},"How does VLSM relate to CIDR in subnetting?",{"text":118,"@type":110},"CIDR is based on variable-length subnet masking (VLSM), which allows specifying prefixes of arbitrary length to create subnets sized to need.","https://schema.org",{"og:url":78,"og:type":121,"og:title":59,"og:site_name":91,"og:description":61},"article",{"robots":123,"canonical":78},"index,follow",{"doc_id":125,"site_id":56},571877,1792033276,{"code":4,"msg":5,"data":128},{"doc_id":125,"user_id":129,"nickname":88,"user_avatar":130,"doc_module":9,"category_id":8,"category_name":11,"doc_title":59,"doc_description":61,"doc_content":131,"file_id":132,"file_url":133,"file_type":134,"file_size":135,"view_count":101,"is_deleted":4,"is_public":9,"is_downloadable":9,"audit_status":9,"page_count":9,"language":136,"language_code":57,"site_id":56,"html_lang":57,"table_of_contents":137,"faqs":138,"seo_title":139,"seo_description":61,"update_tm":140,"read_time":4},962084928904,"https://ap-avatar.wpscdn.com/davatar_155a257f0dc6eb9ab79c44ca47cae57d","| | CIDR/IPv4 Cheat Sheet |  |\n| --- | --- | --- |\n| \u003Cbr>Subnets Classful Ranges\u003Cbr>CIDR Subnet Mask \\# of Addresses Wildcard A [0.0.0.0](0.0.0.0)-[127.255.255.255](127.255.255.255)\u003Cbr> /0 [0.0.0.0](0.0.0.0) 4,294,967,296 [255.255.255.255](255.255.255.255)   B [128.0.0.0](128.0.0.0)-[191.255.255.255](191.255.255.255) \u003Cbr>/1 [128.0.0.0](128.0.0.0) 2,147,483,648 [127.255.255.255](127.255.255.255) C [192.0.0.0](192.0.0.0)-[223.255.255.255](223.255.255.255)\u003Cbr> /2 [192.0.0.0](192.0.0.0) 1,073,741,824 [63.255.255.255](63.255.255.255)   D [224.0.0.0](224.0.0.0)-[239.255.255.255](239.255.255.255) \u003Cbr>/3 [224.0.0.0](224.0.0.0) 536,870,912 [31.255.255.255](31.255.255.255) E [240.0.0.0](240.0.0.0)-[255.255.255.255](255.255.255.255)\u003Cbr>\u003Cbr>/4 [240.0.0.0](240.0.0.0) 268,435,456 [15.255.255.255](15.255.255.255)\u003Cbr>/5 [248.0.0.0](248.0.0.0) 134,217,728 [7.255.255.255](7.255.255.255) Reserved Ranges\u003Cbr>/6 [252.0.0.0](252.0.0.0) 67,108,864 [3.255.255.255](3.255.255.255) RFC 1918 [10.0.0.0](10.0.0.0)-[10.255.255.255](10.255.255.255)\u003Cbr>/7 [254.0.0.0](254.0.0.0) 33,554,432 [1.255.255.255](1.255.255.255) Localhost [127.0.0.0](127.0.0.0)-[127.255.255.255](127.255.255.255)\u003Cbr>/8 [255.0.0.0](255.0.0.0) 16,777,216 [0.255.255.255](0.255.255.255) RFC 1918 [172.16.0.0](172.16.0.0)-[172.31.255.255](172.31.255.255)\u003Cbr>/9 [255.128.0.0](255.128.0.0) 8,388,608 [0.127.255.255](0.127.255.255) RFC 1918 [192.168.0.0](192.168.0.0)-[192.168.255.255](192.168.255.255)\u003Cbr>/10 [255.192.0.0](255.192.0.0) 4,194,304 [0.63.255.255](0.63.255.255)\u003Cbr>/11 [255.224.0.0](255.224.0.0) 2,097,152 [0.31.255.255](0.31.255.255) CIDR notation\u003Cbr>/12 [255.240.0.0](255.240.0.0) 1,048,576 [0.15.255.255](0.15.255.255) Classless interdomain routing\u003Cbr>(CIDR) |  |  |\n| /13 [255.248.0.0](255.248.0.0) 524,288 [0.7.255.255](0.7.255.255) /14 [255.252.0.0](255.252.0.0) 262,144 [0.3.255.255](0.3.255.255) /15 [255.254.0.0](255.254.0.0) 131,072 [0.1.255.255](0.1.255.255) /16 [255.255.0.0](255.255.0.0) 65,536 [0.0.255.255](0.0.255.255) /17 [255.255.128.0](255.255.128.0) 32,768 [0.0.127.255](0.0.127.255) /18 [255.255.192.0](255.255.192.0) 16,384 [0.0.63.255](0.0.63.255) /19 [255.255.224.0](255.255.224.0) 8,192 [0.0.31.255](0.0.31.255) /20 [255.255.240.0](255.255.240.0) 4,096 [0.0.15.255](0.0.15.255) /21 [255.255.248.0](255.255.248.0) 2,048 [0.0.7.255](0.0.7.255) |  | notation is a compact representation of an IP address and its associated routing prefix. It's expressed as a / followed by a number (e.g. /0 or /10) .\u003Cbr>\u003Cbr>VLSM\u003Cbr>CIDR is based on the variable-length subnet masking (VLSM) technique, which allows the specification of arbitrary-length prefixes. |\n| \u003Cbr>/22 [255.255.252.0](255.255.252.0) 1,024 [0.0.3.255](0.0.3.255) Decimal to Binary |  |  |\n| /23 [255.255.254.0](255.255.254.0) 512 [0.0.1.255](0.0.1.255)\u003Cbr>/24 [255.255.255.0](255.255.255.0) 256 [0.0.0.255](0.0.0.255) /25 [255.255.255.128](255.255.255.128) 128 [0.0.0.127](0.0.0.127) /26 [255.255.255.192](255.255.255.192) 64 [0.0.0.63](0.0.0.63) /27 [255.255.255.224](255.255.255.224) 32 [0.0.0.31](0.0.0.31) /28 [255.255.255.240](255.255.255.240) 16 [0.0.0.15](0.0.0.15) /29 [255.255.255.248](255.255.255.248) 8 0.0.0.7 |  | Subnet Mask Wildcard 0 0000 0000 255 1111 1111 128 1000 0000 127 0111 1111 192 1100 0000 63 0011 1111 224 1110 0000 31 0001 1111 240 1111 0000 15 0000 1111 248 1111 1000 7 0000 0111 |\n|  /30 255.255.255.252 4 [0.0.0.3](0.0.0.3)   252 1111 1100 3 0000 0011 \u003Cbr>/31 255.255.255.254 2 [0.0.0.1](0.0.0.1) 254 1111 1110 1 0000 0001\u003Cbr> /32 255.255.255.255 1 [0.0.0.0](0.0.0.0)   255 1111 1111 0 0000 0000 \u003Cbr>[NetworkProGuide.com](NetworkProGuide.com) |  |  |","cbCaiciQARCP1rFL","https://ap.wps.com/l/cbCaiciQARCP1rFL","pdf",54379,"English","# Subnets Classful Ranges\n## Reserved Ranges\n# CIDR notation\n## VLSM\n# Decimal to Binary","[{\"question\":\"What does CIDR notation mean (e.g., /0 or /10)?\",\"answer\":\"CIDR notation is a compact representation of an IP address and its routing prefix. It is expressed as a slash followed by a number, such as /0 or /10.\"},{\"question\":\"Which IPv4 ranges are reserved or commonly used privately?\",\"answer\":\"The sheet lists reserved ranges including RFC 1918 private blocks (10.0.0.0–10.255.255.255, 172.16.0.0–172.31.255.255, 192.168.0.0–192.168.255.255) and localhost (127.0.0.0–127.255.255.255).\"},{\"question\":\"How does VLSM relate to CIDR in subnetting?\",\"answer\":\"CIDR is based on variable-length subnet masking (VLSM), which allows specifying prefixes of arbitrary length to create subnets sized to need.\"}]","CIDR-IPv4 Cheat Sheet - Subnetting | PDF",1791924207]