Domain & Authority
Authority, whois, DNS, hosting and security insights for any domain.
What are domain and authority tools?
Domain and authority tools look up the public records and reputation of a domain: authority score and PageRank, referring domains, WHOIS/RDAP registration and age, DNS records, hosting provider, SSL certificate validity, spam blacklists and archived history.
| I want to… | Use this tool |
|---|---|
| Check Domain Authority and Page Authority | DA PA Checker |
| See who owns a domain and when it expires | Whois Domain Lookup |
| Look up A, MX, TXT and other DNS records | DNS Records Checker |
| Verify an SSL certificate | SSL Certificate Checker |
| Check if a domain is on a spam blacklist | Blacklist Checker |
DA PA Checker
Bulk-check the authority score, Open PageRank, global rank and referring domains of up to 20 websites.
Popular
Domain Authority Checker
Full authority report for any website: authority score, PageRank, rank, referring domains, SEO score, domain age, SSL and hosting.
Page Authority Checker
Check the on-page SEO score of any URL together with the authority of the site it belongs to.
PageRank Checker
Check the Open PageRank score (0–10), global rank and monthly PageRank history of any website.
Backlink Checker
See how many websites link to a domain, its link strength and history, and your backlink gap against competitors.
Whois Domain Lookup
Registrar, dates, nameservers and status for any domain.
Popular
Domain Age Checker
Find out exactly how old a domain is and when it expires.
DNS Records Checker
Look up A, AAAA, CNAME, MX, NS, TXT, SOA and CAA records.
Domain to IP
Find the IP addresses a domain resolves to.
Hosting Checker
Find out who hosts any website, with network and location details.
SSL Certificate Checker
Verify an SSL certificate: issuer, validity, expiry and covered domains.
Blacklist Checker
Check whether a domain or IP is listed on major spam blacklists.
Wayback Machine Checker
See when a site was first archived and browse its saved snapshots.
What Is My IP
See your public IP address and network details.
Email Deliverability Checker
Score a domain's email setup: MX, SPF, DKIM, DMARC, MTA-STS, TLS-RPT and BIMI in one check.
SPF Record Checker
Validate an SPF record, count DNS lookups (max 10) and see the full include tree.
DMARC Record Checker
Look up and explain a domain's DMARC policy, reporting addresses and alignment settings.
DKIM Record Checker
Find DKIM keys on common selectors or a selector you enter, and check key type and size.
DNS Propagation Checker
Check a DNS record on 12 public resolvers worldwide to see if your change has propagated.
Nameserver Checker
Test every nameserver of a domain: authoritative answers, matching SOA serials and network diversity.
Reverse DNS Lookup
Find the PTR hostname of up to 20 IP addresses and check forward-confirmed reverse DNS.
IP Address Lookup
Look up any IP or domain: country, network owner, IP range, provider and reverse DNS.
TLS Version Checker
Test which TLS versions (1.0, 1.1, 1.2, 1.3) a server accepts and spot outdated protocols.
Domain Availability Checker
Check if up to 20 domain names are available to register, using official registry data.
Domain Expiry Checker
Check the expiration date and days left for up to 20 domains, sorted by the soonest.
Open Port Checker
Check whether ports such as 22, 80, 443, 3306 or 25 are open on any domain or IP, from our server.
Ping Test (TCP Ping)
Ping a website or server from our server and see response time, jitter and packet loss.
Subdomain Finder
Find the subdomains of any domain from public SSL certificate transparency logs — passive and safe.
Popular
BIMI Record Checker
Check a domain’s BIMI record, logo (SVG Tiny PS), VMC certificate and DMARC enforcement for brand logos in email.
MTA-STS Checker
Check MTA-STS and TLS-RPT for a domain: DNS record, policy file, mode and MX coverage.
DNSSEC Checker
Check whether a domain is protected by DNSSEC: DS records, DNSKEYs, algorithms and validation status.
Email Header Analyzer
Paste email headers to trace the delivery path and delays, and check SPF, DKIM, DMARC and spoofing signs.
Email Address Validator
Check up to 50 email addresses: format, domain, MX mail servers, disposable inboxes, role addresses and typos.
Domain Name Generator
Get hundreds of brandable domain name ideas from your keywords, then check which ones are free to register.