Domain & WHOIS Suite
Instantly check domain availability, perform WHOIS owner lookups, inspect DNS records, generate AI brand names, and evaluate domain value.
Domain Tools
The complete suite of web domain utilities: verify domain availability across 15+ TLDs, perform instant WHOIS and domain owner lookups, inspect comprehensive DNS records (A, AAAA, MX, NS, TXT), check domains in bulk up to 100 at once, brainstorm catchy business names with AI, track expiring domains, and calculate accurate domain valuations — empowering webmasters, entrepreneurs, and domain investors with enterprise-grade intelligence.
All Tools
- What Is My IP & Client Info
- WHOIS & Domain Owner Lookup
- Domain Availability Checker
- Bulk Domain Search
- AI Domain Name Generator
- DNS & Nameserver Lookup
- Domain Valuation & Health Audit
- Domain History & Wayback Archive
- SSL Certificate Checker & Expiry Monitor
- Email Security Checker (SPF, DKIM, DMARC)
- Subdomain Finder & Enumerator
- Domain Rights & Trademark Checker
- Internet Speed Test
- Internet Troubleshooter & Diagnostics
Frequently Asked Questions
What is a WHOIS lookup and how can I find out who owns a website?
A WHOIS lookup queries official registry records to reveal registrar details, registration and expiration dates, name servers, and domain lifecycle status (EPP codes) for any web address.
Can I check domain availability across multiple extensions in bulk?
Yes — ToolsTier allows you to check instant availability across 15+ popular extensions (.com, .net, .org, .ai, .io, etc.) or scan up to 100 custom domain combinations simultaneously using the Bulk Domain Scanner.
How do I inspect DNS records and verify email security?
Our DNS Lookup tool displays live A, AAAA, MX, NS, and TXT records with DNSSEC validation, while the Domain Report audit tool verifies SSL certificates and SPF/DMARC configurations to safeguard domain reputation.
How can I investigate past websites and historical domain records?
The Domain History & Archive tool allows you to explore domain records from initial registration, browse past website snapshots via the Wayback Machine, and inspect ownership evolution.
Frequently Asked Questions About PDF & Image Tools
Quick and clear answers to the most common search queries to help you work like a pro
What is a WHOIS lookup and how can I find out who owns a website?
A WHOIS lookup queries official registry records to reveal registrar details, registration and expiration dates, name servers, and domain lifecycle status (EPP codes) for any web address.
Can I check domain availability across multiple extensions in bulk?
Yes — ToolsTier allows you to check instant availability across 15+ popular extensions (.com, .net, .org, .ai, .io, etc.) or scan up to 100 custom domain combinations simultaneously using the Bulk Domain Scanner.
How do I inspect DNS records and verify email security?
Our DNS Lookup tool displays live A, AAAA, MX, NS, and TXT records with DNSSEC validation, while the Domain Report audit tool verifies SSL certificates and SPF/DMARC configurations to safeguard domain reputation.
How can I investigate past websites and historical domain records?
The Domain History & Archive tool allows you to explore domain records from initial registration, browse past website snapshots via the Wayback Machine, and inspect ownership evolution.
Official WHOIS & RDAP Data
Direct registry lookups for website owner info, creation dates, and nameservers
Live DNS & Security Auditing
Instant lookup of A, AAAA, MX, NS records plus SSL, DNSSEC, and SPF/DMARC health
Bulk Search & Domain Radar
Check up to 100 domains at once, monitor expiring dropping domains & AI name ideas