DNSFilter Domains API
The Domains API from DNSFilter — 3 operation(s) for domains.
Work with this as data
Every API here is available over the APIs.io API and to AI agents over MCP.
MCP server
One button, every client — Claude, Cursor, VS Code and the rest.
https://apis.io/mcp
Tools for apis
7 MCP tools reach this
find_apisBrowse and filter every API in the catalog.get_api_artifactsOne API's artifacts, grouped by type.get_openapiThe primary OpenAPI for this API.find_similar_apisAPIs that look like this one.apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.resolveTurn a domain, URL or GitHub org into the provider it belongs to.find_cohortsEvery scored population of providers in the catalog.
Call it yourself
curl for this page
This API
curl "https://apis.io/api/v1/apis/dnsfilter-domains-api"
All apis
curl "https://apis.io/api/v1/apis?limit=25"Discovery needs no key. Ratings and market analysis are Pro.
Get an API key
Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.
A second provider on the same verified email joins the account you already have.
OpenAPI Specification
openapi: 3.2.0
info:
title: DNSFilter Domains API
description: '**Note:** If you are a distributor integrating with DNSFilter, please check
out our Distributors Development Guide.'
version: '2026-07-13'
servers:
- url: https://api.dnsfilter.com
description: Production
tags:
- name: Domains
description: ''
paths:
/v1/domains/user_lookup:
get:
tags:
- Domains
operationId: V1_Domains-user_lookup
parameters:
- name: fqdn
description: FQDN to lookup
required: false
in: query
schema:
type: string
responses:
'400':
description: Bad Request
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
'401':
description: Unauthorized
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
'200':
description: Domains basic information
content:
application/json:
schema:
type: object
properties:
data:
$ref: '#/components/schemas/DomainSpec'
description: Gets all the domains associated for a particular FQDN.
summary: Lookup
security:
- header_authorization: []
x-controller: v1/domains
x-action: user_lookup
/v1/domains/bulk_lookup:
get:
tags:
- Domains
operationId: V1_Domains-bulk_lookup
parameters:
- name: fqdns
description: Comma separated list of FQDNs to lookup
required: false
in: query
schema:
type: string
responses:
'401':
description: Unauthorized
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
'200':
description: Domains basic information
content:
application/json:
schema:
type: object
properties:
data:
type: array
items:
$ref: '#/components/schemas/DomainSpec'
description: Gets the domains and categories associated for each FQDN of the specified list.
summary: Bulk lookup
security:
- header_authorization: []
x-controller: v1/domains
x-action: bulk_lookup
/v1/domains/suggest_threat:
post:
tags:
- Domains
operationId: V1_Domains-suggest_threat
parameters:
- name: categories
description: Suggested security categories, comma separated IDs
required: false
in: query
schema:
type: string
- name: fqdn
description: FQDN to verify
required: true
in: query
schema:
type: string
- name: notes
description: User notes about the threat suggestion/verification
required: true
in: query
schema:
type: string
responses:
'400':
description: Bad Request
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
'401':
description: Unauthorized
content:
application/json:
schema:
$ref: '#/components/schemas/Error'
'200':
description: Operation response
content:
application/json:
schema:
$ref: '#/components/schemas/Success'
description: 'Mark a FQDN to verify its threat categorization.
Request example: `/v1/domains/suggest_threat?fqdn=XXXX¬es&test-report&categories=1,222,989`'
summary: Suggest threat
security:
- header_authorization: []
x-controller: v1/domains
x-action: suggest_threat
components:
schemas:
IdType:
type: object
properties:
id:
type: string
description: Resource Id (integer or uuid)
type:
type: string
description: Resource type name
uuid:
type: string
description: Resource UUID (if applicable)
description: JSON API resource ID and type attributes
DomainSpec:
allOf:
- $ref: '#/components/schemas/IdType'
- $ref: '#/components/schemas/ApplicationLookup'
- type: object
properties:
attributes:
$ref: '#/components/schemas/Domain'
relationships:
type: object
properties:
categories:
type: object
properties:
data:
type: array
items:
$ref: '#/components/schemas/IdType'
description: Domain current associated categories and applications
description: Domain specification
Domain:
type: object
properties:
host:
type: string
description: Host
name:
type: string
description: Name
description: Domain resource
Success:
type: object
properties:
success:
type: boolean
description: Successful operation yes/no
description: Success basic representation
Error:
type: object
properties:
error:
type: string
description: 'Error message (e.x.: Not Authorized)'
description: Error basic representation
ApplicationLookup:
type: object
properties:
id:
type: integer
description: Application Id
name:
type: string
description: Application name
category:
type: string
description: Application category name
description: ApplicationLookup resource
securitySchemes:
header_authorization:
type: apiKey
name: Authorization
in: header