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Gridlode
LiveDomains and SEO2 credits / request

Subdomain Finder API

Finds a domain's subdomains from public Certificate Transparency logs (crt.sh, with Cert Spotter as a fallback), with first and last seen dates and how many certificates named each host, newest first. CT logs list every name that ever had a public TLS certificate, not the current DNS, so some results may no longer resolve.

GEThttps://api.gridlode.com/v1/domain/subdomains
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Parameters

NameTypeDescription
domainrequiredstringRegistrable domain, e.g. example.com (URLs and subdomains are reduced to it).
limitintegerMaximum subdomains to return (most recently seen first).
Default: 500
max_ageintegerAccept a cached answer up to this many seconds old, billed at 50%. Default 0 (always fresh).

Response fields

    Code

    curl "https://api.gridlode.com/v1/domain/subdomains?domain=python.org&limit=100" \
  -H "Authorization: Bearer $GRIDLODE_KEY"
    2 credits per request
    One credit is $0.001 on the smallest pack, from $0.0003 on enterprise plans.
    Half price for cached data
    Cached for up to 24 h. Pass max_age to use it.
    Failed requests are free
    Blocks, timeouts and target errors never cost credits.

    Market reference: SecurityTrails / WhoisXML subdomain APIs ~$20-60 per 1k lookups; TabAPI does not offer this.

    Questions

    Part of these solutions
    How much does the Subdomain Finder API cost?

    2 credits per request. One credit costs $0.001 on the smallest pack and as little as $0.0003 on enterprise plans. Cached answers cost half and failed calls are free.

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