IP WHOIS

Accurate, Well-Parsed WHOIS Data

IP WHOIS data that’s formatted consistently and offers unmatched accuracy and reliability

{
  total:1,
  page:0,
  records:[
    {
      range:"215.0.0.0/8",
      id:"DNIC-NET-215",
      name:"DoD Network Information Center",
      country:"US",
      org:{
        id:"DNIC",
        name:"DoD Network Information Center",
        address:null,
        country:"US",
        admin:"MIL-HSTMST-ARIN",
        abuse:"REGIS10-ARIN",
        tech:"MIL-HSTMST-ARIN\NREGIS10-ARIN",
        maintainer:"",
        created:"1970-01-01",
        updated:"2025-03-13",
        source:"arin",
        raw:"OrgID:          DNIC\nOrgName:        DoD Network Information Center\nCanAllocate:    \nStreet:         3990 E. Broad Street\nCity:           Columbus\nState/Prov:     OH\nCountry:        US\nPostalCode:     43218\nRegDate:        1970-01-01\nUpdated:        2025-03-13\nOrgAdminHandle: MIL-HSTMST-ARIN\nOrgTechHandle:  MIL-HSTMST-ARIN\nOrgTechHandle:  REGIS10-ARIN\nOrgAbuseHandle: REGIS10-ARIN\nSource:         ARIN\n\n\nPOCHandle:      REGIS10-ARIN\nIsRole:         Y\nLastName:       Registration\nFirstName:      \nStreet:         DISA-Columbus\nStreet:         300 North James Road\nCity:           Whitehall\nState/Prov:     OH\nCountry:        US\nPostalCode:     43213\nRegDate:        2009-06-24\nUpdated:        2025-02-13\nOfficePhone:    +1-844-347-2457\nMailbox:        disa.columbus.ns.mbx.arin-registrations@mail.mil\nSource:         ARIN\n\n\nPOCHandle:      MIL-HSTMST-ARIN\nIsRole:         Y\nLastName:       Network DoD\nFirstName:      \nStreet:         DISA-Columbus\nStreet:         300 North James Road\nCity:           Whitehall\nState/Prov:     OH\nCountry:        US\nPostalCode:     43213\nRegDate:        1993-05-26\nUpdated:        2025-02-12\nOfficePhone:    +1-844-347-2457\nMailbox:        disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil\nSource:         ARIN\n"
      },
      status:"REALLOCATION",
      tech:{
        id:"MIL-HSTMST-ARIN",
        name:"Network DoD",
        email:"disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil",
        address:"US, OH, Whitehall, DISA-Columbus\n300 North James Road, 43213",
        country:"US",
        phone:"",
        fax:"",
        created:"1993-05-26",
        updated:"2025-02-12",
        source:"arin",
        raw:"POCHandle:      MIL-HSTMST-ARIN\nIsRole:         Y\nLastName:       Network DoD\nFirstName:      \nStreet:         DISA-Columbus\nStreet:         300 North James Road\nCity:           Whitehall\nState/Prov:     OH\nCountry:        US\nPostalCode:     43213\nRegDate:        1993-05-26\nUpdated:        2025-02-12\nOfficePhone:    +1-844-347-2457\nMailbox:        disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil\nSource:         ARIN\n"
      },
      maintainer:null,
      admin:{
        id:"MIL-HSTMST-ARIN",
        name:"Network DoD",
        email:"disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil",
        address:"US, OH, Whitehall, DISA-Columbus\n300 North James Road, 43213",
        country:"US",
        phone:"",
        fax:"",
        created:"1993-05-26",
        updated:"2025-02-12",
        source:"arin",
        raw:"POCHandle:      MIL-HSTMST-ARIN\nIsRole:         Y\nLastName:       Network DoD\nFirstName:      \nStreet:         DISA-Columbus\nStreet:         300 North James Road\nCity:           Whitehall\nState/Prov:     OH\nCountry:        US\nPostalCode:     43213\nRegDate:        1993-05-26\nUpdated:        2025-02-12\nOfficePhone:    +1-844-347-2457\nMailbox:        disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil\nSource:         ARIN\n"
      },
      abuse:{
        id:"REGIS10-ARIN",
        name:"Registration",
        email:"disa.columbus.ns.mbx.arin-registrations@mail.mil",
        address:"US, OH, Whitehall, DISA-Columbus\n300 North James Road, 43213",
        country:"US",
        phone:"",
        fax:"",
        created:"2009-06-24",
        updated:"2025-02-13",
        source:"arin",
        raw:"POCHandle:      REGIS10-ARIN\nIsRole:         Y\nLastName:       Registration\nFirstName:      \nStreet:         DISA-Columbus\nStreet:         300 North James Road\nCity:           Whitehall\nState/Prov:     OH\nCountry:        US\nPostalCode:     43213\nRegDate:        2009-06-24\nUpdated:        2025-02-13\nOfficePhone:    +1-844-347-2457\nMailbox:        disa.columbus.ns.mbx.arin-registrations@mail.mil\nSource:         ARIN\n"
      },
      created:"2025-09-05",
      updated:"2025-09-05",
      source:"arin",
      raw:"NetHandle:      NET-215-0-0-0-2
OrgID:          DNIC
Parent:         NET-215-0-0-0-1
NetName:        DNIC-NET-215
NetRange:       215.0.0.0 - 215.255.255.255
NetType:        reallocation
RegDate:        2025-09-05
Updated:        2025-09-05
Source:         ARIN


OrgID:          DNIC
OrgName:        DoD Network Information Center
CanAllocate:    
Street:         3990 E. Broad Street
City:           Columbus
State/Prov:     OH
Country:        US
PostalCode:     43218
RegDate:        1970-01-01
Updated:        2025-03-13
OrgAdminHandle: MIL-HSTMST-ARIN
OrgTechHandle:  MIL-HSTMST-ARIN
OrgTechHandle:  REGIS10-ARIN
OrgAbuseHandle: REGIS10-ARIN
Source:         ARIN


POCHandle:      MIL-HSTMST-ARIN
IsRole:         Y
LastName:       Network DoD
FirstName:      
Street:         DISA-Columbus
Street:         300 North James Road
City:           Whitehall
State/Prov:     OH
Country:        US
PostalCode:     43213
RegDate:        1993-05-26
Updated:        2025-02-12
OfficePhone:    +1-844-347-2457
Mailbox:        disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil
Source:         ARIN


POCHandle:      REGIS10-ARIN
IsRole:         Y
LastName:       Registration
FirstName:      
Street:         DISA-Columbus
Street:         300 North James Road
City:           Whitehall
State/Prov:     OH
Country:        US
PostalCode:     43213
RegDate:        2009-06-24
Updated:        2025-02-13
OfficePhone:    +1-844-347-2457
Mailbox:        disa.columbus.ns.mbx.arin-registrations@mail.mil
Source:         ARIN
",
      domain:"mail.mil"
    }
  ],
  net:"215.204.222.212"
}

Comprehensive, Detailed Data

Access consistent, user-friendly WHOIS data with IPinfo’s IP WHOIS. Sourced daily from Regional Internet Registries (RIRs) around the globe, our WHOIS data is processed for consistent formatting and structure, ensuring accuracy and ease of use. Whether you’re enhancing network management, conducting cybersecurity investigations, or driving data-driven decisions, our WHOIS data provides the information you need.

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Official libraries, clean docs, and powerful APIs designed for real-world deployment.

Two ways to use it · one team behind you

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$ curl https://ipinfo.io/whois/net/24.62.0.0/15?token=$TOKEN

{
  net:"24.62.0.0/15",
  total:100,
  page:0,
  records:[
    {
      range:"24.62.0.0/15",
      id:"NEW-ENGLAND-5",
      name:"Comcast Cable Communications Holdings, Inc",
      country:"US",
      org:"C02610695",
      updated:"2010-10-18",
      status:"REASSIGNMENT",
      source:"arin",
      raw:"<raw data>"
    }
  ]
}

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csv12M entries · updated Aug 10, 2026345.5 MBjson12M entries · updated Aug 10, 2026404.94 MBmmdb12M entries · updated Aug 10, 20261.36 GBparquet12M entries · updated Aug 10, 2026330.79 MB

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Customizable fields
Data updates every 24 hours

How to get our IP WHOIS data

Compare features across IPinfo's products. Choose what best fits your use case — WHOIS data is available exclusively with custom plans for users who need detailed WHOIS information.

Key feature	IPinfo Lite	IPinfo Core	IPinfo Max
IP Range IP Address range/netblock
Netblock ID Raw netblock identifier from WHOIS
Netblock Name Name of netblock
Country Code ISO 3166 country code
Assignment Status Range assignment type
Technical Contact ID for technical contact of WHOIS record
Maintainer ID for contact authorized to update WHOIS record for netblock
Admin Contact ID for administrative contact of netblock
RIR Source RIR associated with record (RIPE, ARIN, etc.)
WHOIS Domain Domain name (from WHOIS entry)
Last Updated Last updated date (taken from WHOIS entry)
Organization ID or name of organization responsible for netblock
Reverse DNS Domain Domain associated with IP range (only available if a majority of IPs within range share a common reverse DNS domain)
Domain Domain associated with netblock (based on our data sets)
Geolocation Latitude/longitude coordinates indicating where users of network are located
Organization Address Address of the associated organization
ASN Autonomous system number for organization that routes traffic for IP (based on BGP routing data)
AS Name Name of AS (based on our data sets and data processing)
AS Domain Domain of AS (based on our data sets and data processing)
AS Type ISP, business, or hosting (based on around 20 different features and our custom training set)
	Learn more	Learn more	Learn more

How People Use WHOIS Data

WHOIS data powers everything from network investigations to compliance checks. With detailed ownership, registration, and contact information for IP addresses, teams can make smarter, faster decisions about security, attribution, and trust. Here’s how top companies put IPinfo’s WHOIS data to work:

Domain Ownership Information

Link malicious infrastructure from IP addresses to their registrants, accelerating incident response and forensic analysis.

Fraud Prevention

Collect evidence of suspicious activities and flag behavior patterns, like reuse of registrant information across fraudulent domains, to identify fraud in real time.

Brand & IP Protection

Monitor domain registration data for unauthorized or suspicious registrations that may infringe on trademarks, helping protect digital assets and prevent abuse.

Made for Developers, Trusted by Enterprises

Our expert in-house team diligently maintains and supports our IP WHOIS, ensuring you always have accurate, up-to-date IP data at your fingertips. With libraries for more than a dozen popular programming languages—from Ruby to Rust and PHP to Perl—integrating our API is quick and seamless. Explore our developer docs to see just how easy it is to get started.

I can infer that IPinfo is doing much more than just taking at face value what public registries are providing. For example, they’re looking at domain name ownership within those IP ranges to infer asset ownership. This is the same way I’d approach this problem.
Jeremy TurnerHead of Cyber and Risk at Cogility

We needed to further contextualize Internet scanners, crawlers, and bots. Origin networks, data centers, ASNs, and countries are a huge component of that. We were looking for a faster, more developer-friendly alternative to existing geo-IP providers. A close friend of mine hit the IPinfo API with cURL, and I saw all the information we needed.
Andrew MorrisFounder & Chief Architect at Greynoise

We love to integrate with the IPinfo API because it provides us with a highly reliable and accurate stream of data.
Richard WellsDirector at CFC

I can infer that IPinfo is doing much more than just taking at face value what public registries are providing. For example, they’re looking at domain name ownership within those IP ranges to infer asset ownership. This is the same way I’d approach this problem.
Jeremy TurnerHead of Cyber and Risk at Cogility

We needed to further contextualize Internet scanners, crawlers, and bots. Origin networks, data centers, ASNs, and countries are a huge component of that. We were looking for a faster, more developer-friendly alternative to existing geo-IP providers. A close friend of mine hit the IPinfo API with cURL, and I saw all the information we needed.
Andrew MorrisFounder & Chief Architect at Greynoise