23

Tools in this category

6

Featured tools

All Network Tools

Browse every tool in this category and open the one that best matches the task you want to finish.

Network Tools

IP Lookup

Look up IP address details online with this free IP Lookup tool. Enter an IP or domain, run the lookup, and review location, network, and provider information instantly.

  • IP location
  • ISP
  • ASN
Network Tools

DNS Lookup

Check DNS records online with this free DNS Lookup tool. Enter a domain, run the lookup, and review A, MX, TXT, NS, CNAME, and related record data from one page.

  • A records
  • MX records
  • TXT records
Network Tools

A Record Lookup

A Record Lookup opens DNS Lookup with A record lookups already selected, so you can get to the right workflow faster.

  • A records
  • MX records
  • TXT records
Network Tools

AAAA Record Lookup

AAAA Record Lookup opens DNS Lookup with AAAA record lookups already selected, so you can get to the right workflow faster.

  • A records
  • MX records
  • TXT records
Network Tools

MX Record Lookup

MX Record Lookup opens DNS Lookup with MX record lookups already selected, so you can get to the right workflow faster.

  • A records
  • MX records
  • TXT records
Network Tools

TXT Record Lookup

TXT Record Lookup opens DNS Lookup with TXT record lookups already selected, so you can get to the right workflow faster.

  • A records
  • MX records
  • TXT records
Network Tools

NS Record Lookup

NS Record Lookup opens DNS Lookup with NS record lookups already selected, so you can get to the right workflow faster.

  • A records
  • MX records
  • TXT records
Network Tools

CNAME Lookup

CNAME Lookup opens DNS Lookup with CNAME record lookups already selected, so you can get to the right workflow faster.

  • A records
  • MX records
  • TXT records
Network Tools

Subnet Calculator

Calculate subnet masks, network ranges, and usable host counts online with this free Subnet Calculator. Enter an IP and CIDR, then review the subnet details instantly.

  • Subnet mask
  • Host range
  • Broadcast address
Network Tools

What Is My IP

Check your public IP address online with this free What Is My IP tool. Open the page, run the lookup, and see your detected IP and related network details instantly.

  • Show public IP
  • Show IPv4
  • Show IPv6
Network Tools

DNS Propagation Checker

Check DNS propagation online with this free DNS Propagation Checker. Enter a domain and record type, then review how public resolvers are answering from multiple locations.

  • Check global DNS servers
  • Propagation status
Network Tools

A Record Propagation Checker

A Record Propagation Checker opens DNS Propagation Checker with A record propagation checks already selected, so you can get to the right workflow faster.

  • Check global DNS servers
  • Propagation status
Network Tools

AAAA Record Propagation Checker

AAAA Record Propagation Checker opens DNS Propagation Checker with AAAA record propagation checks already selected, so you can get to the right workflow faster.

  • Check global DNS servers
  • Propagation status
Network Tools

MX Record Propagation Checker

MX Record Propagation Checker opens DNS Propagation Checker with MX record propagation checks already selected, so you can get to the right workflow faster.

  • Check global DNS servers
  • Propagation status
Network Tools

TXT Record Propagation Checker

TXT Record Propagation Checker opens DNS Propagation Checker with TXT record propagation checks already selected, so you can get to the right workflow faster.

  • Check global DNS servers
  • Propagation status
Network Tools

Port Checker

Check open ports online with this free Port Checker. Enter a hostname and port number, run the test, and see whether the service is reachable from the network.

  • Check open ports
  • Connection status
Network Tools

ASN Lookup

Look up ASN details online with this free ASN Lookup tool. Enter an autonomous system number or IP, run the lookup, and review owner and network information instantly.

  • ASN number
  • ISP details
  • Network range
Network Tools

CIDR Calculator

Calculate CIDR ranges online with this free CIDR Calculator. Enter a CIDR block, run the tool, and review the mask, network, broadcast, and usable host range instantly.

  • CIDR block
  • IP range
  • Subnet details
Network Tools

HTTP Header Analyzer

Inspect HTTP response headers online with this free HTTP Header Analyzer. Enter a URL, run the check, and review status, redirects, and returned headers instantly.

  • Detect security headers
  • Analyze server headers
Network Tools

Domain WHOIS Lookup

Look up WHOIS data online with this free Domain WHOIS Lookup tool. Enter a domain, run the lookup, and review registrar, dates, nameserver, and status details instantly.

  • Domain owner
  • Registrar
  • Expiration date
Network Tools

Website Security Scanner

Scan a website's basic security posture online with this free Website Security Scanner. Enter a URL, run the scan, and review headers, TLS, DNS, robots, and sitemap checks from one page.

  • SSL check
  • Header analysis
  • Security hints
Network Tools

Security Header Checker

Check security headers online with this free Security Header Checker. Enter a URL, run the tool, and review CSP, HSTS, X-Frame-Options, and related header coverage instantly.

  • Check CSP
  • Check HSTS
  • Check X-Frame-Options
Network Tools

IP Range Calculator

Use IP Range Calculator online to cidr input. Built for fast results with a simple interface, examples, FAQs, and related tools.

  • CIDR input
  • Network address
  • Broadcast address

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