Output format | Documentation | Subdomains Lookup API | WhoisXML API
Products APIs Data Feeds Web Tools Domain Research & Monitoring Enterprise Packages
WHOIS / WHOIS History
WHOIS / WHOIS History

Provide current and historical ownership information on domains / IPs. Identify all connections between domains, registrants, registrars, and DNS servers.

DNS / DNS History
DNS / DNS History

Look into all current and historical DNS / IP connections between domains and A, MX, NS, and other records. Monitor suspicious changes to DNS records.

IP Geolocation / IP Netblocks
IP Geolocation / IP Netblocks

Get detailed context on an IP address, including its user’s geolocation, time zone, connected domains, connection type, IP range, ASN, and other network ownership details.

Domain Research Suite (DRS)
Domain Research Suite (DRS)

Access our web-based solution to dig into and monitor all domain events of interest.

Domain Research Suite (DRS)
Domain Research Suite (DRS)

Get access to a web-based enterprise-grade solution to search and monitor domain registrations and ownership details for branded terms, fuzzy matches, registrants of interest, and more.

Research
Monitoring
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WhoisXML API Predictive Threat Intelligence
Predictive Threat Intelligence

Detect and block access to and from dangerous domain names before malicious actors can weaponize them. Contact us today for more information.

WhoisXML API Internet Infrastructure
Internet Infrastructure

Unlock integrated intelligence on Internet properties and their ownership, infrastructure, and other attributes.

Enterprise API Packages
Enterprise API Packages

Our complete set of domain, IP, and DNS intelligence available via API calls as an annual subscription with predictable pricing.

Security Intelligence (SI) Suite
Security Intelligence (SI) Suite

Offers complete access to WHOIS, IP, DNS, and subdomain data for product enrichment, threat hunting and more.

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Output format

{
    "search":"gmail.com",
    "result":{
        "count":8,
        "records":[
            {
                "domain":"alt1.smtp.gmail.com",
                "firstSeen":1571374592,
                "lastSeen":1592164815
            },
            {
                "domain":"alt118.gmail.com",
                "firstSeen":1553876927,
                "lastSeen":1592164709
            },
            {
                "domain":"imap.gmail.com",
                "firstSeen":1571394086,
                "lastSeen":1595857361
            },
            {
                "domain":"mta-sts.gmail.com",
                "firstSeen":1571402941,
                "lastSeen":1592203333
            },
            {
                "domain":"pop.gmail.com",
                "firstSeen":1571399508,
                "lastSeen":1595857437
            },
            {
                "domain":"smtp-relay.gmail.com",
                "firstSeen":1571375257,
                "lastSeen":1595857445
            },
            {
                "domain":"smtp.gmail.com",
                "firstSeen":1571375229,
                "lastSeen":1595526061
            },
            {
                "domain":"www.gmail.com",
                "firstSeen":1586736000,
                "lastSeen":1595857483
            }
        ]
    }
}

Output parameters

search
The target domain name.
result
The resulting object.
count
Number of records in result segment.
records
Contains info about the resulting data: a domain name and timestamps.
records[0].domain
Domain name
records[0].firstSeen
Timestamp of the first time that the record was seen.
records[0].lastSeen
Timestamp of the last update for this record.