External lookups

Tools

A wrapper around other people’s scanners and looking glasses. Your browser talks to the provider directly — they see your IP and whatever you type. TechnoLitero does not run the lookup.

Ports

  • Open Ports

    YouGetSignal · embedded — Check whether a host answers on a TCP port. Runs at YouGetSignal, not here.

  • Port Scanner

    SubnetOnline · embedded — Another browser-side port check when you want a second opinion.

Network

  • Visual Traceroute

    YouGetSignal · opens at provider — Map the hops from the provider’s network to a host.

  • Looking Glass

    ping.pe · opens at provider — Ping, traceroute, and MTR from many vantage points.

  • Ping / Traceroute / DNS

    ping.eu · embedded — Classic network tests from ping.eu.

  • Redirect Checker

    redirect-checker.org · embedded — Follow HTTP redirects and see the hop chain.

Mail & DNS

  • MX Toolbox

    MXToolbox · embedded — MX, blacklist, SMTP, and related mail/DNS checks in SuperTool.

  • intoDNS

    intoDNS · embedded — DNS health report for a domain (NS, MX, SOA, and common misconfigs).

  • DNS Dumpster

    HackerTarget · embedded — Passive DNS recon and related host mapping.

  • DNS Watch

    dnswatch.info · embedded — Look up records from a public DNS UI.

  • DNS Lookup

    dnslookup.online · embedded — Query common record types from dnslookup.online.

  • Global DNS Propagation

    whatsmydns.net · opens at provider — See how a record looks around the world. Opens at the provider because they block embeds.

  • Mail Tester

    mail-tester.com · embedded — Score an outbound message for spam and authentication issues.

IP & WHOIS

  • WHOIS

    whois.com · embedded — Domain registration lookup.

  • IP WHOIS

    ipwho.is · embedded — IP geolocation and network details from ipwho.is.

  • BGP Toolkit

    Hurricane Electric · embedded — Prefixes, ASNs, and routing views from Hurricane Electric.

TLS & Headers

  • SSL Server Test

    Qualys SSL Labs · opens at provider — Qualys SSL Labs. Opens in a new tab because they block embeds.

  • Security Headers

    securityheaders.com · opens at provider — Grade a site’s HTTP security headers. Opens at the provider.

  • Mozilla Observatory

    Mozilla · opens at provider — Mozilla’s site security scanner. Opens in a new tab.