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  • IP : 66.28.0.30




    NetRange: 66.28.0.0 - 66.28.255.255
    CIDR: 66.28.0.0/16
    NetName: COGENT-NB-0000
    NetHandle: NET-66-28-0-0-1
    Parent: NET66 (NET-66-0-0-0-0)
    NetType: Direct Allocation
    OriginAS:
    Organization: Cogent Communications, LLC (COGC)
    RegDate: 2000-10-12
    Updated: 2025-09-10
    Comment: ADDRESSES WITHIN THIS BLOCK ARE NON-PORTABLE
    Comment: Geofeed https://geofeed.cogentco.com/geofeed.csv
    Comment: Reassignment information for this block can be found at rwhois.cogentco.com 4321
    Ref: https://rdap.arin.net/registry/ip/66.28.0.0



    OrgName: Cogent Communications, LLC
    OrgId: COGC
    Address: 2450 N Street NW
    City: Washington
    StateProv: DC
    PostalCode: 20037
    Country: US
    RegDate: 2000-05-30
    Updated: 2025-09-23
    Comment: Geofeed https://geofeed.cogentco.com/geofeed.csv
    Ref: https://rdap.arin.net/registry/entity/COGC

    ReferralServer: rwhois://rwhois.cogentco.com:4321

    OrgAbuseHandle: COGEN-ARIN
    OrgAbuseName: Cogent Abuse
    OrgAbusePhone: +1-877-875-4311
    OrgAbuseEmail: abuse@cogentco.com
    OrgAbuseRef: https://rdap.arin.net/registry/entity/COGEN-ARIN

    OrgNOCHandle: ZC108-ARIN
    OrgNOCName: Cogent Communications
    OrgNOCPhone: +1-877-875-4311
    OrgNOCEmail: noc@cogentco.com
    OrgNOCRef: https://rdap.arin.net/registry/entity/ZC108-ARIN

    OrgTechHandle: IPALL-ARIN
    OrgTechName: IP Allocation
    OrgTechPhone: +1-877-875-4311
    OrgTechEmail: ipalloc@cogentco.com
    OrgTechRef: https://rdap.arin.net/registry/entity/IPALL-ARIN

    RTechHandle: ZC108-ARIN
    RTechName: Cogent Communications
    RTechPhone: +1-877-875-4311
    RTechEmail: noc@cogentco.com
    RTechRef: https://rdap.arin.net/registry/entity/ZC108-ARIN



About IP WHOIS - Check Who Owns an IP Address

IP WHOIS Lookup Tool offers a free IP Lookup Service to check who owns an IP address. Just enter an IP and perform the IP Lookup to find which organization or individual owns that specific IP address.

IP WHOIS Lookup Tool

Go for Lookup IP WHOIS information using the IP WHOIS Lookup tool for any allocated IP address.

Every IP address that floats on the global public internet is administrated by one of the five RIRs, each working within a specific region of the globe. The RIRs and their regulatory areas are as follows.

African Network Information Centre (AfriNIC) Manages IP addresses for the Africa continent. https://www.afrinic.net/

American Registry for Internet Numbers (ARIN) Manages IP addresses for the United States, Canada, and many Caribbean and North Atlantic islands. https://www.arin.net/

Asia-Pacific Network Information Centre (APNIC) Manages IP addresses for Asia, Australia, and surrounding Countries. https://www.apnic.net/

Latin America and Caribbean Network Information Centre (LACNIC) Manages IP addresses for Latin America and the Caribbean. https://www.lacnic.net/

Réseaux IP Européens Network Coordination Centre (RIPE NCC) Manages IP addresses for Europe, the Middle East, and the former USSR. https://www.ripe.net/

IP WHOIS Lookup

Lookup IP WHOIS information using the IP WHOIS Lookup tool for any allocated IP address. This tool will provide you with the IP Address owners contact information. The results will also show the Regional Internet Registry (RIR) who assigns the IP, the assigned owner, location, contact information, and abuse reporting details. Other important information includes how many IP Addresses are in the block or blocks assigned to the owner of the IP you're researching.

IP WHOIS Results

You will get the information you should contact to reach out to the IP address owner from the IP WHOIS results. You will most likely get the Internet Service Provider (ISP) information to whom the IP address is assigned. If someone tries to spam or hack you, etc., it's best to dig out the abuse information included in the results. Otherwise, using the non-abuse contact information will be your best option when attempting to reach the controlling party.