1
digga
digga.devSame kind of website
Research a domain’s DNS records, RDAP, WHOIS, subdomains, IP addresses, and email security in one report.
Alternatives
The Best Who.is Alternatives in 2026
9 alternatives2 free · 1 open source
Looking for something like Who.is? Here are 9 alternatives, ranked by how closely they match it on purpose, features and platforms. Of these, 2 are free or have a free plan and 1 are open source.
Who.is searches domain and website registration records, including WHOIS, RDAP, DNS, and related information.
Top picks at a glance
First suggestiondiggaResearch a domain’s DNS records, RDAP, WHOIS, subdomains…Free or freemium optionViewDNS.infoViewDNS.info is a web-based collection of DNS, domain, and…Open source optiondnsxdnsx provides a fast DNS reconnaissance toolkit for…Another optionMark Monitor WHOISMarkMonitor WHOIS looks up domain registration records…
Quick comparison
| # | Alternative | Pricing | Open source | Platforms |
|---|---|---|---|---|
| 1 | digga | — | Not stated | Browser extension, Web |
| 2 | Mark Monitor WHOIS | — | Not stated | Web |
| 3 | Icann Lookup | — | Not stated | Web |
| 4 | ViewDNS.info | Freemium | Not stated | Web |
| 5 | DomainRecon | — | Not stated | Web |
| 6 | DNSai | — | Not stated | Web |
| 7 | Central Ops | — | Not stated | Web |
| 8 | DNS History | Freemium | Not stated | Web |
| 9 | dnsx | — | Yes | — |
All Who.is alternatives
2
Mark Monitor WHOIS
whois-webform.markmonitor.com/whoisSame kind of website
MarkMonitor WHOIS looks up domain registration records, with notices about contact information withheld for some registrations.
3
Icann Lookup
lookup.icann.org/en/lookupSame kind of website
ICANN Lookup searches registration data for domain names and related internet number resources.
4
Same kind of website · free plan
ViewDNS.info is a web-based collection of DNS, domain, and IP lookup tools, including reverse IP, WHOIS, DNS records, subdomain discovery, port scanning, and traceroute. It also offers an API for domain and IP data.
5
DomainRecon
kriztalz.sh/domain-reconSame kind of website
DomainRecon looks up DNS records, WHOIS details, SSL certificates, and IP addresses for a domain.
6
DNSai
dnsai.com/dns-toolsSame kind of website
DNSai provides DNS lookups and analysis tools for records, WHOIS, blacklists, email authentication, and domains.
7
Central Ops
centralops.netSame kind of website
Central Ops provides online network tools including traceroute, nslookup, and WHOIS, with a related WHOIS API.
8
Same kind of website · free plan
DNS History stores historical DNS records, allowing users to review past domain and infrastructure changes.
9
Open source
dnsx provides a fast DNS reconnaissance toolkit for resolving records and collecting DNS information from domains.
No alternatives match this filter.
Alternatives to similar tools
dnsx12 alternativesDNS History9 alternativesViewDNS.info17 alternativesdigga17 alternativesDomainRecon17 alternativesDNSai17 alternatives
What is the best alternative to Who.is?
Based on features, tags and platforms, the closest alternatives to Who.is are digga, Mark Monitor WHOIS, and Icann Lookup.
Is there a free alternative to Who.is?
Yes. ViewDNS.info and DNS History are free or offer a free plan.
Are there open-source alternatives to Who.is?
Yes: dnsx.
Alternatives are suggested from the purpose and features described in our listings. Different pages for the same product appear once. Read each description to check whether it fits your task. How we choose alternatives · Suggest an alternative