WHOIS

Lookup an IP or domain. Uses IANA referral first, then registry WHOIS.
Query
64.121.65.187
IANA
whois.iana.org
Referred
whois.arin.net
WHOIS servers can rate limit. Results are cached for performance.
### IANA response (whois.iana.org)

% IANA WHOIS server
% for more information on IANA, visit http://www.iana.org
% This query returned 1 object

refer:        whois.arin.net

inetnum:      64.0.0.0 - 64.255.255.255
organisation: ARIN
status:       ALLOCATED

whois:        whois.arin.net

changed:      1999-07
source:       IANA

### Registry response (whois.arin.net)

#
# 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.
#


#
# Query terms are ambiguous.  The query is assumed to be:
#     "n 64.121.65.187"
#
# Use "?" to get help.
#

NetRange:       64.121.0.0 - 64.121.255.255
CIDR:           64.121.0.0/16
NetName:        RCN-BLK-19
NetHandle:      NET-64-121-0-0-1
Parent:         NET64 (NET-64-0-0-0-0)
NetType:        Direct Allocation
OriginAS:       
Organization:   RCN (RTSL-6)
RegDate:        2000-07-03
Updated:        2013-10-02
Ref:            https://rdap.arin.net/registry/ip/64.121.0.0


OrgName:        RCN
OrgId:          RTSL-6
Address:        650 College Road East
City:           Princeton
StateProv:      NJ
PostalCode:     08540
Country:        US
RegDate:        2013-07-09
Updated:        2022-08-30
Comment:        For all abuse issues, please contact abuse@rcn.com
Ref:            https://rdap.arin.net/registry/entity/RTSL-6

ReferralServer:  rwhois://rwhois.rcn.net:4321

OrgTechHandle: ZR40-ARIN
OrgTechName:   RCN Corporation
OrgTechPhone:  +1-888-972-6622 
OrgTechEmail:  noc@rcn.com
OrgTechRef:    https://rdap.arin.net/registry/entity/ZR40-ARIN

OrgNOCHandle: ABN3-ARIN
OrgNOCName:   Astound Broadband NOC
OrgNOCPhone:  +1-888-972-6622 
OrgNOCEmail:  noc@astound.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/ABN3-ARIN

OrgAbuseHandle: RAD75-ARIN
OrgAbuseName:   RCN Abuse Department
OrgAbusePhone:  +1-888-972-6622 
OrgAbuseEmail:  abuse@rcn.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/RAD75-ARIN


#
# 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.
#