Myaddr https://whois.my-addr.com/ Cheapest API I've found in years. Answer from karmaceutical on reddit.com
Info by IP
infobyip.com โบ ipbulklookup.php
Domain and IP bulk lookup tool
Domain and IP bulk lookup tool allows to lookup domain, location, ISP and ASN for multiple hosts (IPs or domains) at once. It also supports lookup of MX or NS DNS records for multiple domains.
Free/Cheap way to check WHOIS INFO in bulk?
Myaddr https://whois.my-addr.com/ Cheapest API I've found in years. More on reddit.com
Any legit way to do mass scripted whois queries?
If you are only looking for carrier (which can be mapped to AS an ASNAME) you can use the IP-to-ASN mapping services of team cymru. This is not as specific as WHOIS information regarding potential subcarriers with provider assigned IP addresses and such, but might be close enough. http://www.team-cymru.com/IP-ASN-mapping.html From here you can basically do bulk lookup of multiple IP addresses to ASNAME using either whois, netcat or even DNS. More on reddit.com
is there a bulk domain lookup that doesn't suck?
domainbulker.com allows up to 5k domains per search. More on reddit.com
Free Whois API
Is that you, Cogent?
More on reddit.comVideos
Domaintools
research.domaintools.com โบ bulk-parsed-whois
Bulk Parsed Whois - DomainTools
Bulk Parsed Whois lookup delivers a .csv file with parsed Whois records for up to 2,000 domains at a time.
MxToolBox
mxtoolbox.com โบ BulkLookup.aspx
Bulk Lookup Tool - Bulk IP and Domain Lookup Tool - MxToolBox
Signup for a Free MxToolbox account to run Free Bulk Lookups for MX, A, DNS, Geo, ASN, SPF & More Signup
Reddit
reddit.com โบ r/bigseo โบ free/cheap way to check whois info in bulk?
r/bigseo on Reddit: Free/Cheap way to check WHOIS INFO in bulk?
August 25, 2019 -
I want to check at least 50.000/100.000k sites daily to see when they expire.
Is there a free way to do it? If not, which is the cheapest service for this?
ICANN
lookup.icann.org
ICANN Lookup
The ICANN registration data lookup tool gives you the ability to look up the current registration data for domain names and Internet number resources.
WhoisXML API
whois.whoisxmlapi.com โบ bulk-api
Bulk WHOIS API | Easy Access to Bulk WHOIS Data | WhoisXML API
Website Categorization Lookup Domain Reputation Lookup Brand Alert Lookup Registrant Alert Lookup Email Verification Lookup Bulk Email Verification Lookup Threat Intelligence Lookup ยท MAC Address Lookup Screenshot Lookup SSL Certificates Lookup ยท Get access to a web-based enterprise-grade solution to search and monitor domain registrations and ownership details for branded terms, fuzzy matches, registrants of interest, and more. Reverse WHOIS Search WHOIS History Search WHOIS Search Reverse DNS Search Domain Availability Check Domains & Subdomains Discovery
Online DNS Tools
onlinednslookup.com โบ bulk-domain-whois
Bulk Domain Whois
This tool performs bulk whois lookups for up to 10000 domain names at a time. It allows users to export the gathered data, including details like name servers, creation dates, expiration dates, owner information, and registrar details, into CSV or JSON format
WHOXY
whoxy.com
WHOIS API | WHOIS Lookup API | Domain WHOIS API
With support for 1595 TLDs, our cloud-based API lets you quickly access any domain's WHOIS data through Bulk Whois Lookup, Newly Registered Domains, Dropped Deleted Domains, Expiring Domains and Whois Database Download.
Whoisfreaks
whoisfreaks.com โบ tools โบ whois โบ bulk โบ lookup
Bulk Domain Whois Lookup - WhoisFreaks
Explore the power of our Bulk Whois Checker tool by effortlessly examining up to 100 domain names at once. Alternatively, streamline your process by uploading a file containing 3 million domains for comprehensive bulk domain whois analysis.
WhoisFreaks
whoisfreaks.com โบ tools โบ whois โบ lookup
Domain WHOIS Lookup Tool - Fast & Accurate | WhoisFreaks
February 12, 2025 - Yes, WhoisFreaks supports bulk lookups for users who need to analyze multiple domains at once.
ARIN
arin.net โบ reference โบ research โบ bulkwhois
Bulk Whois Data - American Registry for Internet Numbers
ARIN provides access to a bulk copy of all objects in the public ARIN Whois directory service to organizations that will use the data for Internet operational or technical research purposes.
GitHub
github.com โบ lbirchler โบ whois
GitHub - lbirchler/whois: Fast bulk WHOIS lookup
$ csvtool head 1 whois.csv | tr -s ',' '\n' query domainName registryDomainId registrarWhoisServer updatedDate creationDate registryExpiryDate registrar registrarIANAId domainStatus registrantOrganization registrantStateProvince registrantCountry registrantEmail adminEmail techEmail nameServer dnsSec billingEmail registrarAbuseContactEmail registrarAbuseContactPhone
Starred by 6 users
Forked by 2 users
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IPinfo
ipinfo.io โบ blog โบ bulk-ip-lookups
Bulk IP Lookups With IPinfo API | IPinfo.io
January 13, 2017 - You can use our batch API to lookup detailed for up to 100 IPs in a single request. If you want to lookup thousands of IPs rather than hundreds of thousands it's probably simpler to just call our normal API for each of the IPs using some common ...
Jsonwhois
jsonwhois.com โบ bulk-whois
Bulk WHOIS - Check WHOIS records in bulk with JsonWHOIS
Bulk WHOIS allows users to obtain the WHOIS records of several domains at once through a bulk domain lookup.