Perform a reverse DNS PTR lookup for an IPv4 or IPv6 address to find its mapped hostname records. Designed specifically for developers and professionals, this free online networking runs entirely in your browser to process tasks quickly and securely. Enjoy unlimited usage with no data tracking, no registration required, and an entirely ad-free experience.
PTR records are the reverse-DNS counterpart to forward A and AAAA records. This tool converts an IP address into its reverse DNS query name and performs a single PTR lookup.
Your IP address is sent to Google Public DNS to perform one PTR lookup. No logs, credentials, or local files are uploaded by this tool.
DevToolLab is 100% free & ad-free. If this networking saved you some time today, please consider supporting our work.
Check HTTP status codes, response headers and redirect chains for any URL.
Generate a unique URL to easily test, receive and inspect HTTP webhooks in real-time. View request headers, query parameters, JSON payloads, and more.
Calculate IPv4 subnets, network masks, broadcast addresses, and host ranges from IP and CIDR.