[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-1-en-105":3,"doc-seo-571405-105":53,"doc-detail-571405-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","subnetting-cheat-sheet-ipv4","Subnetting Cheat Sheet (IPv4)","","Subnetting Cheat Sheet (IPv4) provides quick reference mappings between subnet masks, CIDR prefixes, wildcard masks, and the resulting address space sizes. It includes usable-versus-total IP counts across common prefix lengths, plus an IPv4 class breakdown (Class A–E) with default masks. A reservations section lists special-purpose ranges and their RFC designations, covering loopback, private networks (RFC 1918), documentation/test nets, carrier-grade NAT, link-local addressing, multicasting, and limited broadcast.",{"@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/subnetting-cheat-sheet-ipv4/571405/",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/subnetting-cheat-sheet-ipv4/571405.png","ImageObject",442,249,{"name":88,"@type":89},"Aurelia","Person",{"url":68,"name":91,"@type":92},"DocShare","Organization","application/pdf","2026-10-23","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},"How do I convert an IPv4 subnet mask to CIDR and wildcard values?","Question",{"text":109,"@type":110},"Use the cheat sheet table to map each subnet mask to its CIDR prefix and wildcard mask. The sheet lists the corresponding wildcard (host bits) for each prefix length.","Answer",{"name":112,"@type":107,"acceptedAnswer":113},"What do “Total IPs” and “Usable IPs” mean for a given subnet size?",{"text":114,"@type":110},"“Total IPs” is the full number of addresses in the subnet, while “Usable IPs” excludes reserved addresses such as network and broadcast (where applicable). The table provides both figures per prefix length.",{"name":116,"@type":107,"acceptedAnswer":117},"Which IPv4 ranges are reserved for special purposes like private networks?",{"text":118,"@type":110},"The reservations section enumerates ranges by RFC, including RFC 1918 private networks (10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16) and other special-use networks such as loopback, link-local, documentation/test, and carrier-grade NAT.","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},571405,1792033311,{"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},1099514068365,"https://ap-avatar.wpscdn.com/avatar/10000253d8d9f28188e?_k=1776742907772140068","Subnetting Cheat Sheet (IPv4)  \n\n| Subnet Mask | CIDR | Wildcard | Total IPs | Usable IPs |\n| --- | --- | --- | --- | --- |\n| [255.255.255.255](255.255.255.255) | /32 | 0.0.0.0 | 1 | - |\n| [255.255.255.254](255.255.255.254) | /31 | 0.0.0.1 | 2 | - |\n| [255.255.255.252](255.255.255.252) | /30 | 0.0.0.3 | 4 | 2 |\n| [255.255.255.248](255.255.255.248) | /29 | 0.0.0.7 | 8 | 6 |\n| [255.255.255.240](255.255.255.240) | /28 | [0.0.0.15](0.0.0.15) | 16 | 14 |\n| [255.255.255.224](255.255.255.224) | /27 | [0.0.0.31](0.0.0.31) | 32 | 30 |\n| [255.255.255.192](255.255.255.192) | /26 | [0.0.0.63](0.0.0.63) | 64 | 62 |\n| [255.255.255.128](255.255.255.128) | /25 | [0.0.0.127](0.0.0.127) | 128 | 126 |\n| [255.255.255.0](255.255.255.0) | /24 | [0.0.0.255](0.0.0.255) | 256 | 254 |\n| [255.255.254.0](255.255.254.0) | /23 | [0.0.1.255](0.0.1.255) | 512 | 510 |\n| [255.255.252.0](255.255.252.0) | /22 | [0.0.3.255](0.0.3.255) | 1024 | 1022 |\n| [255.255.248.0](255.255.248.0) | /21 | [0.0.7.255](0.0.7.255) | 2048 | 2044 |\n| [255.255.240.0](255.255.240.0) | /20 | [0.0.15.255](0.0.15.255) | 4096 | 4094 |\n| [255.255.224.0](255.255.224.0) | /19 | [0.0.31.255](0.0.31.255) | 8192 | 8190 |\n| [255.255.192.0](255.255.192.0) | /18 | [0.0.63.255](0.0.63.255) | 16384 | 16382 |\n| [255.255.128.0](255.255.128.0) | /17 | [0.0.127.255](0.0.127.255) | 32768 | 32766 |\n| [255.255.0.0](255.255.0.0) | /16 | [0.0.255.255](0.0.255.255) | 65536 | 65534 |\n| [255.254.0.0](255.254.0.0) | /15 | [0.1.255.255](0.1.255.255) | 131072 | 131070 |\n| [255.252.0.0](255.252.0.0) | /14 | [0.3.255.255](0.3.255.255) | 262144 | 262142 |\n| [255.248.0.0](255.248.0.0) | /13 | [0.7.255.255](0.7.255.255) | 524288 | 524286 |\n| [255.240.0.0](255.240.0.0) | /12 | [0.15.255.255](0.15.255.255) | 1048576 | 1048574 |\n| [255.224.0.0](255.224.0.0) | /11 | [0.31.255.255](0.31.255.255) | 2097152 | 2097150 |\n| [255.192.0.0](255.192.0.0) | /10 | [0.63.255.255](0.63.255.255) | 4194304 | 4194302 |\n| [255.128.0.0](255.128.0.0) | /9 | [0.127.255.255](0.127.255.255) | 8388608 | 8388606 |\n| [255.0.0.0](255.0.0.0) | /8 | [0.255.255.255](0.255.255.255) | 16777216 | 16777214 |\n| [254.0.0.0](254.0.0.0) | /7 | [1.255.255.255](1.255.255.255) | 33554432 | 33554430 |\n| [252.0.0.0](252.0.0.0) | /6 | [3.255.255.255](3.255.255.255) | 67108864 | 67108862 |\n| [248.0.0.0](248.0.0.0) | /5 | [7.255.255.255](7.255.255.255) | 134217728 | 134217726 |\n| [240.0.0.0](240.0.0.0) | /4 | [15.255.255.255](15.255.255.255) | 268435456 | 268435454 |\n| [224.0.0.0](224.0.0.0) | /3 | [31.255.255.255](31.255.255.255) | 536870912 | 536870910 |\n| [192.0.0.0](192.0.0.0) | /2 | [63.255.255.255](63.255.255.255) | 1073741824 | 1073741822 |\n| [128.0.0.0](128.0.0.0) | /1 | [127.255.255.255](127.255.255.255) | 2147483648 | 2147483646 |\n| 0.0.0.0 | /0 | [255.255.255.255](255.255.255.255) | 4294967296 | 4294967294 |\n\n\n| Classes |\n| --- |\n| Class A: [0.0.0.0](0.0.0.0) – [126.255.255.255](126.255.255.255)*\u003Cbr>Default Mask: [255.0.0.0](255.0.0.0) |\n| Class B: [128.0.0.0](128.0.0.0) – [191.255.255.255](191.255.255.255)\u003Cbr>Default Mask: [255.255.0.0](255.255.0.0) |\n| Class C: [192.0.0.0](192.0.0.0) – [223.255.255.255](223.255.255.255)\u003Cbr>Default Mask: [255.255.255.0](255.255.255.0) |\n| Class D: [224.0.0.0](224.0.0.0)-[239.255.255.255](239.255.255.255) |\n| Class E: [240.0.0.0](240.0.0.0) – [255.255.255.255](255.255.255.255) |\n\n\n| Reservations |\n| --- |\n| *Loopback: [127.0.0.0](127.0.0.0) /8 |\n| RFC 1918: Private networks\u003Cbr>[10.0.0.0](10.0.0.0) /8\u003Cbr>[172.16.0.0](172.16.0.0) /12 [192.168.0.0](192.168.0.0) /16 |\n| RFC 1700: “this” network broadcast 0.0.0.0 /8 |\n| RFC 6598: Carrier-grade NAT [100.64.0.0](100.64.0.0) /10 |\n| RFC 3927: Link-local dynamic address [169.254.0.0](169.254.0.0) /16 |\n| RFC 5736: [192.0.0.0](192.0.0.0) /24 |\n| RFC 5737: Documentation/Examples [192.0.2.0](192.0.2.0) /24 TEST-NET\u003Cbr>[198.51.100.0](198.51.100.0) /24 TEST-NET-2\u003Cbr>[203.0.113.0](203.0.113.0) /24 TEST-NET-3 |\n| RFC 3068: 6to4 anycast [192.88.99.0](192.88.99.0) /24 |\n| RFC 2544:Private in","cbCaigZbLGipIPTg","https://ap.wps.com/l/cbCaigZbLGipIPTg","pdf",188241,"English","# Subnet Mask to CIDR Quick Table\n## IPv4 Classes\n## Reservations (RFC Ranges)","[{\"question\":\"How do I convert an IPv4 subnet mask to CIDR and wildcard values?\",\"answer\":\"Use the cheat sheet table to map each subnet mask to its CIDR prefix and wildcard mask. The sheet lists the corresponding wildcard (host bits) for each prefix length.\"},{\"question\":\"What do “Total IPs” and “Usable IPs” mean for a given subnet size?\",\"answer\":\"“Total IPs” is the full number of addresses in the subnet, while “Usable IPs” excludes reserved addresses such as network and broadcast (where applicable). The table provides both figures per prefix length.\"},{\"question\":\"Which IPv4 ranges are reserved for special purposes like private networks?\",\"answer\":\"The reservations section enumerates ranges by RFC, including RFC 1918 private networks (10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16) and other special-use networks such as loopback, link-local, documentation/test, and carrier-grade NAT.\"}]","Subnetting Cheat Sheet (IPv4) | PDF",1791915952]