Whois Lookup

Query registration info, expiration date, registrar and more for domain, IP or ASN

Example： google.com · baidu.com · github.com · 8.8.8.8 · 211.234.110.0/24 · AS13335
Registration Info
2001:550:3d05::/48
IP Range
2001:550:3D05:: - 2001:550:3D05:FFFF:FFFF:FFFF:FFFF:FFFF
CIDR
2001:550:3D05::/48
Network Name
CHARLESRIVER-V6-CGNT-NET-1
Organization
Charles River Operation (JC-328)
Country/Region
US
Abuse Contact
[email protected]
Registration Date
2020-09-10
Update Date
2020-09-10
Registrant
Charles River Operation (JC-328)
Domain Status
Reassigned
Raw Whois Data
#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#



# start

NetRange:       2001:550:: - 2001:550:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF
CIDR:           2001:550::/32
NetName:        COGC-6NET-0001
NetHandle:      NET6-2001-550-1
Parent:         ARIN-001 (NET6-2001-400-0)
NetType:        Direct Allocation
OriginAS:       
Organization:   Cogent Communications, LLC (COGC)
RegDate:        2002-12-17
Updated:        2012-03-02
Ref:            https://rdap.arin.net/registry/ip/2001:550::



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

OrgTechHandle: IPALL-ARIN
OrgTechName:   IP Allocation
OrgTechPhone:  +1-877-875-4311 
OrgTechEmail:  [email protected]
OrgTechRef:    https://rdap.arin.net/registry/entity/IPALL-ARIN

OrgAbuseHandle: COGEN-ARIN
OrgAbuseName:   Cogent Abuse
OrgAbusePhone:  +1-877-875-4311 
OrgAbuseEmail:  [email protected]
OrgAbuseRef:    https://rdap.arin.net/registry/entity/COGEN-ARIN

OrgNOCHandle: ZC108-ARIN
OrgNOCName:   Cogent Communications
OrgNOCPhone:  +1-877-875-4311 
OrgNOCEmail:  [email protected]
OrgNOCRef:    https://rdap.arin.net/registry/entity/ZC108-ARIN

RTechHandle: ZC108-ARIN
RTechName:   Cogent Communications
RTechPhone:  +1-877-875-4311 
RTechEmail:  [email protected]
RTechRef:    https://rdap.arin.net/registry/entity/ZC108-ARIN

# end


# start

NetRange:       2001:550:3D05:: - 2001:550:3D05:FFFF:FFFF:FFFF:FFFF:FFFF
CIDR:           2001:550:3D05::/48
NetName:        CHARLESRIVER-V6-CGNT-NET-1
NetHandle:      NET6-2001-550-3D05-1
Parent:         COGC-6NET-0001 (NET6-2001-550-1)
NetType:        Reassigned
OriginAS:       
Organization:   Charles River Operation (JC-328)
RegDate:        2020-09-10
Updated:        2020-09-10
Ref:            https://rdap.arin.net/registry/ip/2001:550:3D05::


OrgName:        Charles River Operation
OrgId:          JC-328
Address:        6 Liberty Sq., Ste. 170
City:           Boston
StateProv:      MA
PostalCode:     02109
Country:        US
RegDate:        2016-04-04
Updated:        2018-05-01
Comment:        http://www.endoffice.com
Ref:            https://rdap.arin.net/registry/entity/JC-328


OrgAbuseHandle: COPSO-ARIN
OrgAbuseName:   Copson, Jay 
OrgAbusePhone:  +1-978-344-2656 
OrgAbuseEmail:  [email protected]
OrgAbuseRef:    https://rdap.arin.net/registry/entity/COPSO-ARIN

OrgNOCHandle: COPSO-ARIN
OrgNOCName:   Copson, Jay 
OrgNOCPhone:  +1-978-344-2656 
OrgNOCEmail:  [email protected]
OrgNOCRef:    https://rdap.arin.net/registry/entity/COPSO-ARIN

OrgTechHandle: COPSO-ARIN
OrgTechName:   Copson, Jay 
OrgTechPhone:  +1-978-344-2656 
OrgTechEmail:  [email protected]
OrgTechRef:    https://rdap.arin.net/registry/entity/COPSO-ARIN

# end



#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#