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Hostperl DNS Tools
Built and run on Hostperl infrastructure

Free DNS Lookup
& Network Tools

DNS lookups, email authentication checks, SSL inspection, and network utilities — all in one place, with no signup required.

Start with DNS LookupBrowse all 12 tools

DNS

DNS Lookup

Query A, AAAA, CNAME, TXT, and NS records for any domain.

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WHOIS / RDAP Lookup

View registrar, status, nameservers, and key dates for a domain.

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Email Authentication

MX Lookup

Find mail exchange servers and routing priority for a domain.

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SPF Checker

Check whether a domain publishes a valid SPF record.

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DKIM Checker

Look up a DKIM selector record for any domain.

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DMARC Checker

Review a domain's DMARC policy, reporting, and alignment settings.

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Security

SSL Certificate Checker

Inspect a domain's SSL certificate, issuer, and expiry date.

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Network

Reverse DNS Checker

Resolve an IP address back to its PTR hostname.

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Port Checker

Test whether a specific port is open on a host.

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IP Lookup

Find the country, city, ASN, and provider behind an IP address.

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Utilities

Subnet Calculator

Calculate network address, broadcast, and usable IP ranges from a CIDR.

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Password Generator

Generate strong, random passwords with customizable rules.

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Frequently asked questions

Yes. Every tool on this page is free to use with no signup, no account, and no usage limits beyond reasonable rate limiting to keep the service running smoothly for everyone.

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IP Address Leasing

IPv4 and IPv6 resources for growing networks.

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Web Hosting

cPanel shared hosting for websites of any size.

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