API Tools — DNS Toolkit API

DNS

Core DNS lookup, propagation, and analysis tools

GET /dns/propagation

DNS Propagation Checker

Check DNS propagation across 20 global resolvers in real-time.

GET /dns/lookup

DNS Lookup

Look up any DNS record type for a domain.

GET /dns/lookup/all

DNS Lookup All

Retrieve all DNS record types for a domain in a single request.

POST /dns/lookup/bulk

Bulk DNS Lookup

Look up DNS records for up to 100 domains in a single request.

GET /dns/compare-resolvers

Compare DNS Resolvers

Compare DNS responses across major public resolvers.

GET /dns/doh-test

DNS-over-HTTPS Test

Test DNS-over-HTTPS and DNS-over-TLS provider responses.

GET /dns/idn

IDN Converter

Convert between internationalized domain names (IDN) and Punycode.

GET /dns/caa

CAA Record Analyzer

Analyze Certificate Authority Authorization (CAA) records.

GET /dns/tlsa

TLSA/DANE Lookup

Look up TLSA records for DANE certificate pinning.

GET /dns/generate

DNS Record Generator

Generate DNS records (SPF, DMARC, MTA-STS, BIMI, TLS-RPT).

GET /dns/ns-performance

Nameserver Performance

Benchmark authoritative nameserver response times.

Domain

Domain intelligence — WHOIS, availability, and registration data

GET /dns/whois

WHOIS Lookup

WHOIS / RDAP domain registration lookup with parsed fields.

POST /dns/whois/bulk

Bulk WHOIS Lookup

Bulk WHOIS / RDAP lookup for up to 50 domains.

GET /dns/domain-age

Domain Age Checker

Check how old a domain is based on registration date.

GET /dns/available

Domain Availability

Check if a domain is available for registration.

POST /dns/available/bulk

Bulk Domain Availability

Check availability for up to 50 domains at once.

GET /dns/tld-search

TLD Search

Search keyword availability across 200+ TLDs.

GET /dns/subdomains

Subdomain Discovery

Discover subdomains via DNS brute-force enumeration.

GET /dns/associated

Associated Domains

Find associated infrastructure for a domain.

GET /dns/disposable

Disposable Domain Check

Check if a domain is a disposable/temporary email provider.

Email

Email security and validation tools

GET /dns/email-validate

Email Validation

Validate email address — format, MX records, disposable detection.

GET /dns/email-security

Email Security Posture

Analyze email security: SPF, DKIM, DMARC posture.

POST /dns/email-auth

Email Authentication Validator

Validate email authentication records in detail.

IP

IP address intelligence — reverse DNS, ASN, and blacklists

GET /dns/reverse

Reverse DNS Lookup

Reverse DNS lookup with IP geolocation and intelligence.

GET /dns/asn

ASN Lookup

ASN and IP prefix intelligence.

GET /dns/blacklist

IP Blacklist Check

Check IP/domain against 30+ DNS blacklists.

Security

DNS security auditing, certificates, and vulnerability detection

GET /dns/health

DNS Health Audit

Comprehensive DNS health audit with scored report.

GET /dns/certificate

SSL/TLS Certificate Inspector

Inspect SSL/TLS certificates with chain validation.

GET /dns/dnssec

DNSSEC Validation

Check DNSSEC signing and validation status.

GET /dns/zone-transfer

Zone Transfer Test

Test for zone transfer (AXFR) vulnerability.

GET /dns/typosquat

Typosquatting Detector

Detect typosquatting and lookalike domains.

Web

Web technology detection, port scanning, and redirect tracing

GET /dns/security-headers

Security Headers Audit

Audit HTTP security headers for a website.

GET /dns/tech-stack

Technology Stack Detector

Detect web server technology, frameworks, and headers.

GET /dns/ports

Port Scanner

Scan common TCP ports on a host.

GET /dns/redirects

Redirect Tracer

Trace the full HTTP redirect chain for a URL.