DNS & Network
18 toolsDNS lookup, port scanner, WebSocket tester, public IP detection, SPF & MX record inspection, and FTP test.
Tool list
DNS Lookup
Check the DNS records a public domain publishes, including A, AAAA, MX, NS, CNAME, TXT, and SOA.
MX Lookup
Find the mail servers and priority values that receive email for a domain.
NS Lookup Online
See which name servers are authoritative for a domain and catch delegation mistakes.
CNAME Lookup
Check where a subdomain's CNAME alias points for CDN, SaaS, and hosted app setup.
Online Port Checker
Test whether selected public TCP ports are reachable from the app server.
SMTP Test Tool
Test SMTP connection, TLS mode, authentication, and optional sample email sending.
FTP Test
Test FTP or FTPS login and preview a remote directory listing for a public server.
SPF Checker
Find SPF TXT records and review which senders are authorized for a domain.
My IP Address
Check your public IPv4 and IPv6 address in the browser, inspect connection details, and copy API examples for cURL, JavaScript, Python, and Go.
Hex to IP
Convert a hexadecimal value back into a dotted-decimal IPv4 address for networking and packet analysis.
IP to Hex
Convert an IPv4 address into its compact 32-bit hexadecimal representation.
Binary to IP
Decode a 32-bit binary value or four binary octets back into an IPv4 address.
IP to Binary
Expand an IPv4 address into its 32-bit binary form, grouped per octet for easy subnet reading.
Decimal to IP
Convert a single 32-bit unsigned decimal integer into a dotted-decimal IPv4 address.
IP to Decimal
Convert any IPv4 address into a single 32-bit unsigned decimal integer for storage and indexing.
Octal to IP
Decode octal-encoded IPv4 addresses, dotted or single-value, back into the standard form.
IP to Octal
Render an IPv4 address as four zero-padded octal octets for legacy systems and security review.
IPv6 to Binary
Expand any IPv6 address (including :: shorthand) into a 128-bit binary representation.