1
whois
whois.b1s4.xyzAlso covers dns lookup and domain ip dns · same kind of online tool
Look up DNS records and RDAP domain information with whois_, which supports common record types and network entities.
Alternatives
The Best RDAP Alternatives in 2026
24 alternatives1 free · 1 open source
Looking for something like RDAP? Here are 24 alternatives, ranked by how closely they match it on purpose, features and platforms. Of these, 1 are free or have a free plan and 1 are open source.
Look up domain, IP, autonomous system, and entity records with RDAP.org RDAP-based lookup tool.
Top picks at a glance
First suggestionwhoisLook up DNS records and RDAP domain information with…Free or freemium optionCloudflare DNSCloudflare DNS provides public DNS resolution and…Open source optionCloudFlare DDNS UpdaterCloudflare DDNS Updater updates dynamic DNS records so…Another optionWhoisThis Whois command-line tool looks up DNS and RDAP records…
Quick comparison
| # | Alternative | Pricing | Open source | Platforms |
|---|---|---|---|---|
| 1 | whois | — | Not stated | Web |
| 2 | Whois | — | Not stated | — |
| 3 | Whoxy | Paid | Not stated | Web |
| 4 | Website Information | — | Not stated | Web |
| 5 | dnslytics | — | Not stated | Web |
| 6 | digger.tools | — | Not stated | Web |
| 7 | AFRINIC | — | Not stated | Web |
| 8 | arin | — | Not stated | Web |
| 9 | IPIP.NET | — | Not stated | Web |
| 10 | Whois Search | — | Not stated | Web |
All RDAP alternatives
2
Whois
github.com/b1s4/whoisAlso covers dns lookup and domain ip dns
This Whois command-line tool looks up DNS and RDAP records for a domain.
3
Also covers dns lookup and domain ip dns · same kind of online tool
Whoxy provides a WHOIS API for looking up domain registration records from a database of historical records.
4
Website Information
one-plus.github.io/WebsiteInformationAlso covers dns lookup and domain ip dns · same kind of online tool
OSINT Toolkit page listing website, IP, domain, email and MAC lookup tools; some tools need a known identifier to run.
5
dnslytics
dnslytics.comAlso covers dns lookup and domain ip dns · same kind of online tool
DNSlytics provides reverse IP, NS, MX, WHOIS, and domain lookup tools.
6
digger.tools
digger.toolsAlso covers dns lookup and domain ip dns · same kind of online tool
Domain Digger looks up DNS, WHOIS, IP data, SSL history, and subdomains for a domain.
7
AFRINIC
afrinic.netAlso covers dns lookup and domain ip dns
AFRINIC allocates and manages IP addresses and autonomous system numbers for Africa.
8
arin
arin.netAlso covers dns lookup and domain ip dns
ARIN administers IP addresses and autonomous system numbers for internet operations in its region.
9
IPIP.NET
whois.ipip.netAlso covers dns lookup and domain ip dns
Explore autonomous system and IP address allocation statistics by country or region on IPIP.NET.
10
Whois Search
webwhois.verisign.com/webwhois-ui/index.jsp?la…Also covers dns lookup and domain ip dns · same kind of online tool
Verisign Whois Search provides information about domain name registrations, including .com and .net records.
11
lacnic
lacnic.netAlso covers dns lookup and domain ip dns
LACNIC manages IP addresses and autonomous system numbers for Latin America and the Caribbean.
12
Netlas:
netlas.ioAlso covers dns lookup and domain ip dns · same kind of online tool
Netlas provides search tools for internet infrastructure, including DNS, WHOIS, and IP lookups.
13
Free online network tools
centralops.net/coAlso covers dns lookup and domain ip dns · same kind of online tool
Central Ops offers network diagnostic tools including traceroute, nslookup, and WHOIS lookups.
14
IP search - Network Entity Reputation Database
nerd.cesnet.cz/nerd/ipsAlso covers dns lookup and domain ip dns
Network Entity Reputation Database lets users search IP details and reputation information through its interface.
15
Domain Tools
whois.domaintools.comAlso covers dns lookup and domain ip dns
DomainTools provides WHOIS lookups, domain availability searches, IP history, traffic data, and other domain research information.
16
IWantMyName
iwantmyname.comAlso covers dns lookup and domain ip dns · same kind of online tool
IWantMyName registers domain names across more than 500 extensions and offers related plugins.
17
Domainr
domainr.comAlso covers dns lookup and domain ip dns · same kind of online tool
Domainr searches domain names and provides an API covering top-level domains.
18
SD Finder
subdomainfinder.c99.nlAlso covers dns lookup and domain ip dns · same kind of online tool
Scan a domain for subdomains with Subdomain Finder, which offers private scans that are not logged or indexed.
19
Also covers dns lookup and domain ip dns · same kind of online tool
Check domain registration details and availability with Whois.com, which also sells domain names and hosting.
20
DomainTyper
domaintyper.comAlso covers dns lookup and domain ip dns · same kind of online tool
DomainTyper searches for available domain names across extensions as users type.
21
Also covers dns lookup and domain ip dns · same kind of online tool · free
Cloudflare DNS provides public DNS resolution and authoritative DNS services.
22
Also covers dns lookup and domain ip dns · open source
Cloudflare DDNS Updater updates dynamic DNS records so users can reach a home network through a custom domain.
23
Pyfunceble
pyfunceble.github.ioAlso covers dns lookup and domain ip dns · same kind of online tool
PyFunceble checks whether domains, IP addresses, and URLs are available or syntactically valid.
24
YogaDNS
yogadns.comAlso covers dns lookup and domain ip dns
Intercept system DNS requests on Windows and configure resolvers with YogaDNS.
No alternatives match this filter.
Alternatives to similar tools
Cloudflare DNS24 alternativesNetlas:24 alternativesWebsite Information24 alternativesIPIP.NET24 alternativesFree online network tools24 alternativesIP search - Network Entity Reputation Database24 alternatives
What is the best alternative to RDAP?
Based on features, tags and platforms, the closest alternatives to RDAP are whois, Whois, and Whoxy.
Is there a free alternative to RDAP?
Yes. Cloudflare DNS is free or offer a free plan.
Are there open-source alternatives to RDAP?
Yes: CloudFlare DDNS Updater.
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