{
  "title": "Network tools",
  "human_url": "https://happytails.ai/en/network-tools/",
  "agent_url": "https://happytails.ai/agents/en/network-tools/",
  "language": "en",
  "markdown_url": "https://happytails.ai/en/network-tools.md",
  "content": "Network tools\nFind the tool you need, then open it to get started.\nAll network tools\nCIDR to range\nFirst/last addresses, count and IPv6 support without allocating massive address lists.\nDNS lookup\nA AAAA MX TXT CNAME NS SOA records with resolver and time.\nDNS propagation\nReal geographically distributed resolvers and timestamps.\nNot available yet\nIP lookup\nASN, approximate geography and data timestamp.\nIP range to CIDR\nMinimal exact covering blocks.\nIpv6 compress\nCompress/expand canonical IPv6 with round-trip checks.\nReverse DNS\nPTR query results and missing-record states.\nSubnet calculator\nIPv4/IPv6 ranges, prefix length and usable-address conventions.\nWhat is my IP\nDisplay public IPv4/IPv6 observed by endpoint.\nWhois lookup\nRDAP-first registration lookup with redaction and registry-specific availability.\nRead network results in their context\nA network lookup is a snapshot from a particular resolver, location and time. DNS answers, routing paths and certificates can change, so a result is most useful when the query and observation time are clear.\nHow to choose your next step\nCheck the hostname, record type or IP address carefully. Compare results using the same query and note whether a cached response may be involved.\nCommon questions about network tools\nWhy do DNS results differ between locations?\nResolvers can cache records for different periods, and some services deliberately return location-specific answers. A mismatch does not on its own identify a configuration fault.\nCan browser code perform every network check?\nBrowsers restrict arbitrary network access. Some diagnostics need a server or a public service; that service’s observation point affects what the result means.",
  "content_format": "text/plain",
  "visibility": "public",
  "links": [
    {
      "name": "CIDR to range First/last addresses, count and IPv6 support without allocating massive address lists.",
      "url": "https://happytails.ai/en/network-tools/cidr-to-range/"
    },
    {
      "name": "DNS lookup A AAAA MX TXT CNAME NS SOA records with resolver and time.",
      "url": "https://happytails.ai/en/network-tools/dns-lookup/"
    },
    {
      "name": "DNS propagation Real geographically distributed resolvers and timestamps. Not available yet",
      "url": "https://happytails.ai/en/network-tools/dns-propagation/"
    },
    {
      "name": "IP lookup ASN, approximate geography and data timestamp.",
      "url": "https://happytails.ai/en/network-tools/ip-lookup/"
    },
    {
      "name": "IP range to CIDR Minimal exact covering blocks.",
      "url": "https://happytails.ai/en/network-tools/ip-range-to-cidr/"
    },
    {
      "name": "Ipv6 compress Compress/expand canonical IPv6 with round-trip checks.",
      "url": "https://happytails.ai/en/network-tools/ipv6-compress/"
    },
    {
      "name": "Reverse DNS PTR query results and missing-record states.",
      "url": "https://happytails.ai/en/network-tools/reverse-dns/"
    },
    {
      "name": "Subnet calculator IPv4/IPv6 ranges, prefix length and usable-address conventions.",
      "url": "https://happytails.ai/en/network-tools/subnet-calculator/"
    },
    {
      "name": "What is my IP Display public IPv4/IPv6 observed by endpoint.",
      "url": "https://happytails.ai/en/network-tools/what-is-my-ip/"
    },
    {
      "name": "Whois lookup RDAP-first registration lookup with redaction and registry-specific availability.",
      "url": "https://happytails.ai/en/network-tools/whois-lookup/"
    }
  ],
  "markdown": "# Network tools\n\n- Human page: https://happytails.ai/en/network-tools/\n- Markdown: https://happytails.ai/en/network-tools.md\n- Structured JSON: https://happytails.ai/agents/en/network-tools/index.json\n- Visibility: public\n\n## Page guide\n\nFind the tool you need, then open it to get started.\n\n## All network tools\n\n- [CIDR to range](https://happytails.ai/en/network-tools/cidr-to-range/): First/last addresses, count and IPv6 support without allocating massive address lists. ([Markdown](https://happytails.ai/en/network-tools/cidr-to-range.md))\n\n- [DNS lookup](https://happytails.ai/en/network-tools/dns-lookup/): A AAAA MX TXT CNAME NS SOA records with resolver and time. ([Markdown](https://happytails.ai/en/network-tools/dns-lookup.md))\n\n- [DNS propagation](https://happytails.ai/en/network-tools/dns-propagation/): Real geographically distributed resolvers and timestamps. ([Markdown](https://happytails.ai/en/network-tools/dns-propagation.md))\n\n- [IP lookup](https://happytails.ai/en/network-tools/ip-lookup/): ASN, approximate geography and data timestamp. ([Markdown](https://happytails.ai/en/network-tools/ip-lookup.md))\n\n- [IP range to CIDR](https://happytails.ai/en/network-tools/ip-range-to-cidr/): Minimal exact covering blocks. ([Markdown](https://happytails.ai/en/network-tools/ip-range-to-cidr.md))\n\n- [Ipv6 compress](https://happytails.ai/en/network-tools/ipv6-compress/): Compress/expand canonical IPv6 with round-trip checks. ([Markdown](https://happytails.ai/en/network-tools/ipv6-compress.md))\n\n- [Reverse DNS](https://happytails.ai/en/network-tools/reverse-dns/): PTR query results and missing-record states. ([Markdown](https://happytails.ai/en/network-tools/reverse-dns.md))\n\n- [Subnet calculator](https://happytails.ai/en/network-tools/subnet-calculator/): IPv4/IPv6 ranges, prefix length and usable-address conventions. ([Markdown](https://happytails.ai/en/network-tools/subnet-calculator.md))\n\n- [What is my IP](https://happytails.ai/en/network-tools/what-is-my-ip/): Display public IPv4/IPv6 observed by endpoint. ([Markdown](https://happytails.ai/en/network-tools/what-is-my-ip.md))\n\n- [Whois lookup](https://happytails.ai/en/network-tools/whois-lookup/): RDAP-first registration lookup with redaction and registry-specific availability. ([Markdown](https://happytails.ai/en/network-tools/whois-lookup.md))\n\n## Read network results in their context\n\nA network lookup is a snapshot from a particular resolver, location and time. DNS answers, routing paths and certificates can change, so a result is most useful when the query and observation time are clear.\n\n## How to choose your next step\n\nCheck the hostname, record type or IP address carefully. Compare results using the same query and note whether a cached response may be involved.\n\n## Common questions about network tools\n\n### Why do DNS results differ between locations?\n\nResolvers can cache records for different periods, and some services deliberately return location-specific answers. A mismatch does not on its own identify a configuration fault.\n\n### Can browser code perform every network check?\n\nBrowsers restrict arbitrary network access. Some diagnostics need a server or a public service; that service’s observation point affects what the result means.\n"
}