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Subdomain API: Find the subdomains of any domain — 18 websites ranked by shared content topics, category and on-page relevance.

Each result shows its full tech stack, contacts and AI-policy — not just a name · Browse all sites in Databases →

Domain	Match	Title	Country/Lang	Category	AI files	Contact	AI-protection
dataguide.tech ↗	65 match 1 shared topics	Data Guide - Find the best way to manage your data.	en	databases WordPress WooCommerce	robotsllmsaihumans	emailphone	none
onewhois.com ↗	65 match 1 shared topics	OneWhois™ - Comprehensive Domain Name WHOIS Lookup Tool	en	databases	robotsllmsaihumans	emailphone	none
dataproviderbot.com ↗	64 match 1 shared topics	Structured web data on 400M+ domains \| Dataprovider.com	en	databases Prismic	robots llmsaihumans	emailphone	none
dataprovider.com ↗	64 match 1 shared topics	Structured web data on 400M+ domains \| Dataprovider.com	en	databases Prismic	robots llmsaihumans	emailphone	none
bdgraph.com ↗	64 match 1 shared topics	BDgraph.com — The Premium Domain For Graph Data, BI & Analytics	en	databases	robotsllmsaihumans	emailphone	none
datariq.io ↗	64 match 1 shared topics	DataRiq - The Database for the Age of AI Agents	en	databases	robotsllmsaihumans	emailphone	none
culturalbi.org ↗	63 match 1 shared topics	CulturalBI — Cross-Domain Data Intelligence	en	databases	robotsllmsaihumans	emailphone	none
sqlpadre.com ↗	63 match 1 shared topics	Padre's SQL Resort \| Inside the mind of a MS SQL DBA (it's scary in there)	en	databases WordPress	robotsllmsaihumans	emailphone	none
sqlcodesnippets.com ↗	63 match 1 shared topics	SQL Code Snippets \| A place to store and find useful snippets of SQL code.	en	databases WordPress	robotsllmsaihumans	emailphone	none
dbdb.io ↗	63 match 1 shared topics	Database of Databases · The Encyclopedia of Database Systems	en	databases	robotsllmsaihumans	emailphone	none
fortheloveofdata.co.uk ↗	63 match 1 shared topics	For the Love of Data	United Kingdom en	databases WordPress	robotsllmsaihumans	emailphone	none
stacklocal.io ↗	63 match 1 shared topics	main - StackLocal	en	databases WordPress WooCommerce	robotsllmsaihumans	emailphone	none
dataacorns.com ↗	63 match 1 shared topics	Data Acorns \| The Shell Game	en	databases	robotsllmsaihumans	emailphone	none
graphql.com ↗	62 match 1 shared topics	GraphQL: APIs for humans	en	databases	robotsllmsaihumans	emailphone	none
detectivesql.com ↗	62 match 1 shared topics	detectiveSQL — The SQL Detective Agency	en	databases	robotsllmsaihumans	emailphone	none
brokerbin.com ↗	62 match 1 shared topics	BrokerBin.com \| The World's largest B2B Database	en	databases	robotsllmsaihumans	email phone	none
bvdinfo.com ↗	62 match 1 shared topics	Orbis Database: Global Private Company Data \| Moody's	en	databases	robotsllmsaihumans	emailphone	none
datasnipe.app ↗	62 match 1 shared topics	DataSnipe — Extract structured data from any document	en	databases	robotsllmsaihumans	emailphone	none

How the match score works

Each match is a 0–100 similarity score — the higher it is, the more two sites resemble one another. It’s computed automatically from our own crawl data (never from what a site says about itself) by combining several independent signals, so a high score means several of them point the same way:

shared topics how many of the same fine‑grained content topics (IAB sub‑categories) both sites cover — the main signal.
same category whether they sit in the same business / industry category.
content & title how closely their titles and page descriptions line up in wording and meaning.

No single signal decides the result — they’re blended together. Treat the score as a way to rank candidates rather than an absolute percentage; the chips on each result show which signals contributed.