Every Whois snapshot for a domain, across years.

Pass a domain. Get back every Whois snapshot Deepinfo has observed, ordered by snapshot date. Useful for ownership-trail reconstruction and registrar-transfer analysis.

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WHAT THIS API RETURNS

Multi-snapshot Whois state, for one domain.

The Whois History API returns every Whois snapshot Deepinfo has on file for a given domain. Each snapshot is the parsed Whois record at one point in observation time, including registrar, registrant block, dates, name servers, and status codes.

Use this when one domain matters and the question is about how it changed: when did the registrant organization change, when did the name servers move, when was the most recent registrar transfer. The API returns an array of snapshots in chronological order; deltas are obvious from the field-by-field comparison.

For multi-domain or corpus-scale historical analysis, use the Historical Whois Records bulk feed instead.

REQUEST

One endpoint, one required parameter.

Endpoint:

GET https://api.deepinfo.com/v1/analyze/history/whois?domain={domain}

Parameters:

Name	In	Type	Required	Description
domain	query	string	Yes	A registered domain such as `acme.com`.

Authentication is by API token in the request header. See docs.deepinfo.com for the full request reference.

SAMPLE RESPONSE

See what the API returns.

Real response structure for the Every Whois snapshot for a domain, across years endpoint. Field coverage may vary based on query parameters and data availability.

JSON RESPONSE

[
  {
    "domain_name": "acme.com",
    "snapshot_date": "2018-03-12T08:14:00Z",
    "parsed": {
      "registrar": "GoDaddy.com, LLC",
      "registrant": {"organization": "Acme Holdings Inc.", "country": "US"},
      "name_servers": ["ns1.acme.com", "ns2.acme.com"],
      "create_date": "2002-08-14T00:00:00Z",
      "expiry_date": "2024-08-14T00:00:00Z"
    }
  },
  {
    "domain_name": "acme.com",
    "snapshot_date": "2021-04-08T16:22:00Z",
    "parsed": {
      "registrar": "MarkMonitor Inc.",
      "registrant": {"organization": "Acme Holdings Inc.", "country": "US"},
      "name_servers": ["ns1-cloud.acme.com", "ns2-cloud.acme.com"],
      "create_date": "2002-08-14T00:00:00Z",
      "expiry_date": "2026-08-14T00:00:00Z"
    }
  }
]

STRUCTURED VIEW

Results

Count

First domain name

acme.com

First snapshot date

2018-03-12T08:14:00Z

First parsed

{5 fields}

Sample response shown. Real responses depend on query parameters, data availability, and API version. Talk to us for full schema documentation.

USE CASES

“Ownership-chain reconstruction for fraud cases now runs against years of Whois snapshots in one query. Registrar-transfer analysis that used to require subpoenas to multiple registrars surfaces directly in the data.”

— Senior Threat Intel Lead, Major Financial Services Firm

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