IP Address & DNS Lookup Guide
This tool performs real-time IP address lookups, DNS queries (A, AAAA, MX, TXT, NS, CNAME, PTR), WHOIS domain checks, and SSL certificate audits. It helps system administrators diagnose network routing, verify email server configurations, and check domain ownership instantly.
What information can an IP lookup reveal?
An IP lookup can reveal the geolocation (city, country, ISP), ASN, and host details. This is essential for diagnosing network routing issues and identifying traffic origin.
What is the difference between IPv4 and IPv6?
IPv4 uses a 32-bit address format, limiting the number of addresses. IPv6 uses a 128-bit format to solve the global IP exhaustion problem and improve routing efficiency.
What is Reverse DNS (rDNS)?
While standard DNS resolves a domain to an IP, Reverse DNS (PTR record) resolves an IP back to its associated domain name. This is crucial for mail server reputation.
How does a Subnet Calculator work?
Subnetting divides a network into smaller sub-networks. By entering an IP and CIDR, it instantly computes network boundaries.