What is ViewDNS.info?
ViewDNS.info brings together more than 20 domain and network lookups on one page. Some answer simple questions, such as the WHOIS record, DNS records, HTTP headers or the location of an IP address. Others are research tools: reverse IP finds other sites on the same server, reverse WHOIS finds domains registered by the same person or company, reverse NS and MX find sites sharing a nameserver or mail server, and IP history shows the addresses a domain has pointed to over time.
Those reverse lookups and historical records are often used in open source research to connect websites to each other or to see where a site was hosted in the past. The web tools sit alongside a paid API with the same lookups, plus data products such as ccTLD zone files and newly registered domain feeds, and an MCP server for AI tools.
Main Features
- Reverse IP lookup to find sites hosted on the same server
- Reverse WHOIS to find domains registered by the same person or company
- IP history showing the past IP addresses of a domain
- Subdomain discovery and DNS record lookup
- Reverse NS and reverse MX lookups
- WHOIS, IP location, ASN and abuse contact lookups
- Network tests such as port scan, traceroute, global ping and DNS propagation
- Paid API, MCP server and newly registered domain data
How to Get Started with ViewDNS.info
- Open viewdns.info.
- Pick a tool, such as IP History or Reverse IP Lookup.
- Enter the domain or IP address you are researching and run the lookup.
- Note the results with the date, and cross-check key links with other DNS and WHOIS sources.
ViewDNS.info Pricing
The web tools on viewdns.info can be used without paying. The API has a free Sandbox with 250 trial queries, then Developer at $49 a month for 2,500 queries, Professional at $149 a month for 15,000 queries and Business at $549 a month for 100,000 queries, with annual, prepaid and Enterprise options.
Who Should Use It?
- OSINT researchers connecting websites through shared hosting or registrants
- Journalists looking into who is behind a website
- Security analysts investigating phishing and malicious domains
- System administrators checking DNS settings and propagation
- Developers who need domain data through an API
ViewDNS.info Alternatives
- DNSDumpster: a free tool for mapping the DNS records and subdomains of a domain.
- crt.sh: a free search of certificate transparency logs that reveals hostnames.
- VirusTotal: a free service for checking files, URLs, domains and IPs against many security engines.
Frequently Asked Questions
Is ViewDNS.info free?
Yes, the web tools on the site can be used for free. Heavier or automated use goes through the paid API, which has a free Sandbox of 250 trial queries and paid plans from $49 a month.
What is ViewDNS.info used for in investigations?
Researchers use reverse IP, reverse WHOIS and IP history to see which sites share hosting or a registrant and where a site was hosted before. These links are leads: shared hosting is common, and many WHOIS records are now privacy protected, so findings need confirming with other evidence.
Is it legal to use ViewDNS.info tools?
Looking up public DNS, WHOIS and hosting records is legal in most places. Tools such as the port scanner should only be pointed at systems you own or have permission to test.