DNSfish API · v1

The DNS API for ops, monitors, and CI.

Same engine as the UI, exposed as JSON, JSONP, and DNS-over-HTTPS. No API key required for the public tier.

Try bulk lookup API health Read the docs

No API key required for the public tier. Rate limits apply at the edge.

GET/v1/lookup/:domain200 OK

Returns every record type for a domain, queried against your selected resolver. Pass ?types=A,MX,TXT to limit.

Parameters

Name	Type	Default	Description
domain	string	—	Required. The hostname to look up.
types	string[]	all	Comma-separated list. e.g. A,AAAA,MX
resolver	string	cloudflare	One of cloudflare, google, quad9, opendns, auth

Example request

cURL

$ curl "https://dnsfish.com/v1/lookup/github.com" \
    -H "Accept: application/json"

Response

application/json200 OK

{
  "domain": "github.com",
  "resolver": "cloudflare",
  "queried_at": "2026-05-24T18:42:11Z",
  "latency_ms": 42,
  "dnssec": { "signed": false, "ad": false },
  "answers": {
    "A": [{ "value": "140.82.114.4", "ttl": 60 }],
    "MX": [{ "priority": 1, "value": "aspmx.l.google.com." }, /* 4 more */]
  }
}

SDK snippets

JavaScript (fetch)

const r = await fetch(
  "https://dnsfish.com/v1/lookup/github.com"
)
const data = await r.json()
console.log(data.answers.A)

Python (requests)

import requests
r = requests.get(
  "https://dnsfish.com/v1/lookup/github.com"
)
print(r.json()["answers"]["A"])

Go (net/http)

resp, _ := http.Get(
  "https://dnsfish.com/v1/lookup/github.com")
defer resp.Body.Close()
body, _ := io.ReadAll(resp.Body)
fmt.Println(string(body))

Shell (curl + jq)

$ curl -s "https://dnsfish.com/v1/lookup/github.com" \
    | jq '.answers.A[].value'
"140.82.114.4"