[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-1-en-105":3,"doc-seo-571403-105":53,"doc-detail-571403-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","packetlife-ipv4-subnetting-cidr-subnet-mask-wildcard","Packetlife IPv4 Subnetting - CIDR Subnet Mask Wildcard","","IPv4 subnetting reference focused on CIDR and subnet sizing, presenting a mapping of prefix lengths to subnet masks, usable address counts, and wildcard values. Covers conversion concepts such as decimal-to-binary subnet mask representation, includes subnet mask and wildcard terminology, and provides example ranges for classful networks A through E. Adds reserved range references including localhost and RFC 1918 private blocks, then summarizes key terms like CIDR and VLSM for designing variable-length subnets.",{"@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":51,"@type":70,"position":76},"https://docshare.wps.com/template/general/",3,{"item":78,"name":59,"@type":70,"position":79},"https://docshare.wps.com/template/packetlife-ipv4-subnetting-cidr-subnet-mask-wildcard/571403/",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/packetlife-ipv4-subnetting-cidr-subnet-mask-wildcard/571403.png","ImageObject",442,249,{"name":88,"@type":89},"Riley","Person",{"url":68,"name":91,"@type":92},"DocShare","Organization","application/pdf","2026-10-27","2026-10-13",true,{"@type":98,"interactionType":99,"userInteractionCount":101},"InteractionCounter",{"@type":100},"ViewAction",10,{"@type":103,"mainEntity":104},"FAQPage",[105,111,115],{"name":106,"@type":107,"acceptedAnswer":108},"How do CIDR prefix lengths relate to subnet masks and wildcard values?","Question",{"text":109,"@type":110},"The table links each CIDR value (e.g., /24, /23) to its corresponding subnet mask, the number of addresses, and the wildcard value for that subnet.","Answer",{"name":112,"@type":107,"acceptedAnswer":113},"What does the document say about decimal-to-binary subnet mask conversion?",{"text":114,"@type":110},"It provides an example decimal-to-binary representation for subnet mask octets, showing how decimal values correspond to binary bit patterns used in masking.",{"name":116,"@type":107,"acceptedAnswer":117},"Which IP ranges are listed as reserved, and what are RFC 1918 blocks?",{"text":118,"@type":110},"The document lists localhost (127.0.0.0–127.255.255.255) and RFC 1918 private ranges: 10.0.0.0–10.255.255.255, 172.16.0.0–172.31.255.255, and 192.168.0.0–192.168.255.255.","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},571403,1792079647,{"code":4,"msg":5,"data":128},{"doc_id":125,"user_id":129,"nickname":88,"user_avatar":130,"doc_module":9,"category_id":50,"category_name":51,"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},1374391975076,"https://ap-avatar.wpscdn.com/avatar/14000253ca4ec9f6853?x-image-process=image/resize,m_fixed,w_180,h_180&k=1783305029341752051","[IP](IPV4 SUBNETTING packetlife.net)[V](IPV4 SUBNETTING packetlife.net)[4 S](IPV4 SUBNETTING packetlife.net)[UBNETTING](IPV4 SUBNETTING packetlife.net)[ packetlife.net](IPV4 SUBNETTING packetlife.net)  \n\n| Subnets |  |  |  |\n| --- | --- | --- | --- |\n| CIDR | Subnet Mask | Addresses | Wildcard |\n| /32 | [255.255.255.255](255.255.255.255) | 1 | 0.0.0.0 |\n| /31 | [255.255.255.254](255.255.255.254) | 2 | 0.0.0.1 |\n| /30 | [255.255.255.252](255.255.255.252) | 4 | 0.0.0.3 |\n| /29 | [255.255.255.248](255.255.255.248) | 8 | 0.0.0.7 |\n| /28 | [255.255.255.240](255.255.255.240) | 16 | [0.0.0.15](0.0.0.15) |\n| /27 | [255.255.255.224](255.255.255.224) | 32 | [0.0.0.31](0.0.0.31) |\n| /26 | [255.255.255.192](255.255.255.192) | 64 | [0.0.0.63](0.0.0.63) |\n| /25 | [255.255.255.128](255.255.255.128) | 128 | [0.0.0.127](0.0.0.127) |\n| /24 | [255.255.255.0](255.255.255.0) | 256 | [0.0.0.255](0.0.0.255) |\n| /23 | [255.255.254.0](255.255.254.0) | 512 | [0.0.1.255](0.0.1.255) |\n| /22 | [255.255.252.0](255.255.252.0) | 1,024 | [0.0.3.255](0.0.3.255) |\n| /21 | [255.255.248.0](255.255.248.0) | 2,048 | [0.0.7.255](0.0.7.255) |\n| /20 | [255.255.240.0](255.255.240.0) | 4,096 | [0.0.15.255](0.0.15.255) |\n| /19 | [255.255.224.0](255.255.224.0) | 8,192 | [0.0.31.255](0.0.31.255) |\n| /18 | [255.255.192.0](255.255.192.0) | 16,384 | [0.0.63.255](0.0.63.255) |\n| /17 | [255.255.128.0](255.255.128.0) | 32,768 | [0.0.127.255](0.0.127.255) |\n| /16 | [255.255.0.0](255.255.0.0) | 65,536 | [0.0.255.255](0.0.255.255) |\n| /15 | [255.254.0.0](255.254.0.0) | 131,072 | [0.1.255.255](0.1.255.255) |\n| /14 | [255.252.0.0](255.252.0.0) | 262,144 | [0.3.255.255](0.3.255.255) |\n| /13 | [255.248.0.0](255.248.0.0) | 524,288 | [0.7.255.255](0.7.255.255) |\n| /12 | [255.240.0.0](255.240.0.0) | 1,048,576 | [0.15.255.255](0.15.255.255) |\n| /11 | [255.224.0.0](255.224.0.0) | 2,097,152 | [0.31.255.255](0.31.255.255) |\n| /10 | [255.192.0.0](255.192.0.0) | 4,194,304 | [0.63.255.255](0.63.255.255) |\n| /9 | [255.128.0.0](255.128.0.0) | 8,388,608 | [0.127.255.255](0.127.255.255) |\n| /8 | [255.0.0.0](255.0.0.0) | 16,777,216 | [0.255.255.255](0.255.255.255) |\n| /7 | [254.0.0.0](254.0.0.0) | 33,554,432 | [1.255.255.255](1.255.255.255) |\n| /6 | [252.0.0.0](252.0.0.0) | 67,108,864 | [3.255.255.255](3.255.255.255) |\n| /5 | [248.0.0.0](248.0.0.0) | 134,217,728 | [7.255.255.255](7.255.255.255) |\n| /4 | [240.0.0.0](240.0.0.0) | 268,435,456 | [15.255.255.255](15.255.255.255) |\n| /3 | [224.0.0.0](224.0.0.0) | 536,870,912 | [31.255.255.255](31.255.255.255) |\n| /2 | [192.0.0.0](192.0.0.0) | 1,073,741,824 | [63.255.255.255](63.255.255.255) |\n| /1 | [128.0.0.0](128.0.0.0) | 2,147,483,648 | [127.255.255.255](127.255.255.255) |\n| /0 | 0.0.0.0 | 4,294,967,296 | [255.255.255.255](255.255.255.255) |\n\nDecimal to Binary  \nSubnet Mask Wildcard  \n255 1111 1111 0 0000 0000  \n\n| 254 | 1111 1110 |  | 1 | 0000 | 0001 |\n| --- | --- | --- | --- | --- | --- |\n| 252 | 1111 | 1100 | 3 | 0000 | 0011 |\n| 248 | 1111 | 1000 | 7 | 0000 | 0111 |\n| 240 | 1111 | 0000 | 15 | 0000 | 1111 |\n| 224 | 1110 | 0000 | 31 | 0001 | 1111 |\n| 192 | 1100 | 0000 | 63 | 0011 | 1111 |\n| 128 | 1000 | 0000 | 127 | 0111 | 1111 |\n\n0 0000 0000 255 1111 1111  \nSubnet Proportion  \n/29  \n/30  \n/30  \nClassful Ranges  \nA [0.0.0.0](0.0.0.0) – [127.255.255.255](127.255.255.255)  \nB [128.0.0.0](128.0.0.0)-[191.255.255.255](191.255.255.255)  \nC [192.0.0.0](192.0.0.0)-[223.255.255.255](223.255.255.255)  \nD [224.0.0.0](224.0.0.0)-[239.255.255.255](239.255.255.255)  \nE [240.0.0.0](240.0.0.0)-[255.255.255.255](255.255.255.255)  \nReserved Ranges  \nRFC 1918 [10.0.0.0](10.0.0.0)-[10.255.255.255](10.255.255.255)  \nLocalhost [127.0.0.0](127.0.0.0)-[127.255.255.255](127.255.255.255)  \nRFC 1918 [172.16.0.0](172.16.0.0)-[172.31.255.255](172.31.255.255)  \nRFC 1918 [192.168.0.0](192.168.0.0)-[192.168.255.255](192.168.255.255)  \nTerminology  \nCIDR  \nClassless interdomain routing was developed to provide more granularity than legacy classful addressing; CIDR notation is express","cbCaisi2w6xjYep7","https://ap.wps.com/l/cbCaisi2w6xjYep7","pdf",33568,"English","# CIDR and subnet sizing\n## Subnets table: CIDR, subnet mask, addresses, wildcard\n# Decimal to binary and mask components\n## Subnet mask and wildcard conversion\n# Classful ranges and reserved blocks\n## A/B/C/D/E ranges\n## Reserved ranges: RFC 1918 and localhost\n# Terminology\n## CIDR\n## VLSM","[{\"question\":\"How do CIDR prefix lengths relate to subnet masks and wildcard values?\",\"answer\":\"The table links each CIDR value (e.g., /24, /23) to its corresponding subnet mask, the number of addresses, and the wildcard value for that subnet.\"},{\"question\":\"What does the document say about decimal-to-binary subnet mask conversion?\",\"answer\":\"It provides an example decimal-to-binary representation for subnet mask octets, showing how decimal values correspond to binary bit patterns used in masking.\"},{\"question\":\"Which IP ranges are listed as reserved, and what are RFC 1918 blocks?\",\"answer\":\"The document lists localhost (127.0.0.0–127.255.255.255) and RFC 1918 private ranges: 10.0.0.0–10.255.255.255, 172.16.0.0–172.31.255.255, and 192.168.0.0–192.168.255.255.\"}]","Packetlife IPv4 Subnetting - CIDR Subnet Mask Wildcard | PDF",1791915944]