DNSApe | Fast Network Tools

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Fast Network Diagnostics

Enter a domain or IP above and choose a tool to get started.

DNS Lookup

DNS Lookup

Query DNS records for any domain to see how it's configured. DNS (Domain Name System) translates human-readable domain names into IP addresses and provides other critical routing information.

Common Uses

Find the IP address of a website (A/AAAA records)

Discover mail servers for a domain (MX records)

View nameservers responsible for a domain (NS records)

Check TXT records for SPF, domain verification, and other configurations

History

DNS was invented by Paul Mockapetris in 1983 (RFCs 882/883, later 1034/1035) to replace the unscalable HOSTS.TXT file that previously mapped all internet hostnames.

Query DNS records, trace resolution paths, or check global propagation.

google.com - See all DNS records

example.com - Check propagation after changes

HTTP Headers

HTTP Headers

Fetch and analyze HTTP response headers from any URL. Headers reveal server configuration, security settings, caching policies, and redirect chains.

Common Uses

Check security headers (HSTS, CSP, X-Frame-Options)

Debug redirect chains and identify the final destination

Analyze caching configuration (Cache-Control, ETag)

Identify server software and technology stack

History

HTTP headers were defined in the original HTTP/1.0 spec (RFC 1945, 1996). Security headers like HSTS (2012) and CSP (2012) were added later to address evolving web security threats.

See request and response headers, follow redirects, debug caching.

github.com - Check security headers

t.co - Follow redirect chains

Whois

Whois Lookup

Look up registration information for domains and IP addresses. For domains, see registrar, creation/expiration dates, and nameservers. For IPs, see network owner, ASN, and abuse contacts. Domain lookups include both domain and IP WHOIS automatically.

Common Uses

Find when a domain was registered and when it expires

Identify the ISP or hosting provider for an IP address

Check domain status codes and registrar information

Find abuse contacts for reporting malicious activity

Research ownership for security investigations

History

Domain WHOIS originated in the 1970s as an ARPANET directory (RFC 812, 1982). IP allocation is managed by IANA and five Regional Internet Registries (RIRs). GDPR (2018) led to privacy redaction of personal registrant data.

Domain registration, IP ownership, network ranges, ASN info.

apple.com - Domain + IP info combined

8.8.8.8 - IP ownership lookup

SSL Certificate

SSL/TLS Certificate

Analyze SSL/TLS certificates for any domain including validity dates, certificate chain, issuer information, and security configuration.

Common Uses

Verify certificate validity and expiration dates

Check the certificate chain and issuing CA

Identify weak signature algorithms or key sizes

Debug SSL/TLS connection issues

History

SSL was created by Netscape in 1995. TLS succeeded it in 1999. Let's Encrypt (2015) revolutionized certificate issuance with free, automated certificates. TLS 1.3 (2018) is the current standard.

Certificate validity, chain, expiration, issuer details.

stripe.com - EV certificate example

expired.badssl.com - Test expired cert

Email Security

Email Security

Analyze email authentication records (SPF, DKIM, DMARC) to assess a domain's protection against email spoofing and phishing attacks.

Common Uses

Audit email security configuration before sending campaigns

Diagnose email deliverability issues

Verify SPF includes all legitimate sending services

Check DMARC policy enforcement level

History

Email authentication evolved to combat spam and phishing: SPF (2003) authorizes sending servers, DKIM (2007) signs messages cryptographically, and DMARC (2012) sets enforcement policies.

Validate SPF, DKIM, and DMARC email authentication records.

google.com - Well-configured example

github.com - Check email auth setup

Ping

Ping / Latency

Test network connectivity and measure round-trip latency to any host. TCP ping checks if a specific port is reachable and how long connections take.

Common Uses

Test if a server is reachable from our network

Measure latency to identify slow connections

Check specific port accessibility (HTTP, HTTPS, custom)

Monitor uptime and response consistency

History

Ping was created by Mike Muuss in 1983, named after submarine sonar. Traditional ICMP ping is often blocked, so TCP ping (checking port connectivity) is used as an alternative.

Continuous latency monitoring with live charts.

cloudflare.com - Monitor uptime

google.com - Track latency over time

REST API

REST API

Programmatic access to all DNSApe tools via a RESTful JSON API. Rate limited to 60 requests per minute for public access.

Common Uses

Automate DNS monitoring and alerting

Integrate network diagnostics into CI/CD pipelines

Build custom dashboards and reporting tools

Batch process domain or IP lookups

What You'll See

GET /api/v1/dns/records?host=example.com - DNS records

GET /api/v1/dns/traversal?host=example.com&type=A - DNS traversal

GET /api/v1/whois/domain?host=example.com - Domain WHOIS

GET /api/v1/whois/ip?host=8.8.8.8 - IP WHOIS

GET /api/v1/network/headers?host=example.com - HTTP headers

GET /api/v1/network/ssl?host=example.com - SSL certificate

GET /api/v1/network/ping?host=example.com - TCP ping

GET /api/v1/email/security?host=example.com - Email security

History

REST APIs became the standard for web services in the 2000s, replacing XML-based SOAP. JSON format, introduced in 2001, is now the universal data interchange format for APIs.

Programmatic access to all tools. JSON responses, 60 req/min.

GET /api/v1/dns/records?host=example.com

GET /api/v1/whois/domain?host=example.com

Slack Integration

Slack Integration

Run DNSApe lookups directly from any Slack channel using slash commands. Results use Slack Block Kit for rich formatting with status indicators and organized sections.

Common Uses

Quick DNS lookups during incident response

Share diagnostic results with your team instantly

Investigate suspicious domains or IPs in security channels

Check SSL certificates or email security without leaving Slack

What You'll See

/dns example.com - Look up DNS records

/whois example.com - Domain registration info

/ipwhois 8.8.8.8 - IP ownership info

/headers example.com - HTTP response headers

/ssl example.com - SSL certificate details

/ping example.com - TCP ping test

/email example.com - Email security check

History

Slack launched in 2013 and introduced slash commands as a way to integrate external services. Slash commands provide a natural way for teams to access tools without leaving their communication platform.

Run lookups directly from Slack with slash commands.

/dns google.com - DNS records

/whois apple.com - Domain info

Your IP: 216.73.216.115

By srvAudit Skunkworks