WHOIS

Lookup an IP or domain. Uses IANA referral first, then registry WHOIS.
Query
198.251.66.121
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:      198.0.0.0 - 198.255.255.255
organisation: Administered by ARIN
status:       LEGACY

remarks:      198.18.0.0/15 reserved for Network Interconnect Device
remarks:      Benchmark Testing [RFC2544]. Complete registration
remarks:      details for 198.18.0.0/15 are found
remarks:      iniana-ipv4-special-registry.198.51.100.0/24 reserved
remarks:      for TEST-NET-2 [RFC5737]. Complete registration details
remarks:      for 198.51.100.0/24 are found
remarks:      iniana-ipv4-special-registry.

whois:        whois.arin.net

changed:      1993-05
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 198.251.66.121"
#
# Use "?" to get help.
#

NetRange:       198.251.64.0 - 198.251.79.255
CIDR:           198.251.64.0/20
NetName:        1AND1-HOSTING
NetHandle:      NET-198-251-64-0-1
Parent:         NET198 (NET-198-0-0-0-0)
NetType:        Direct Allocation
OriginAS:       
Organization:   IONOS Inc. (11INT)
RegDate:        2013-02-13
Updated:        2013-02-13
Comment:        For abuse issues, please use only abuse@1and1.com
Ref:            https://rdap.arin.net/registry/ip/198.251.64.0


OrgName:        IONOS Inc.
OrgId:          11INT
Address:        2 Logan Square
Address:        100 North 18th St
Address:        Suite 400
City:           Philadelphia
StateProv:      PA
PostalCode:     19103
Country:        US
RegDate:        2006-09-05
Updated:        2024-09-13
Comment:        https://www.ionos.com
Comment:        For abuse issues, please use only abuse@ionos.com
Ref:            https://rdap.arin.net/registry/entity/11INT


OrgNOCHandle: 1NOC-ARIN
OrgNOCName:   1and1 Network Operations Center
OrgNOCPhone:  +1-484-254-5555 
OrgNOCEmail:  noc@net.ionos.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/1NOC-ARIN

OrgAbuseHandle: IADAR5-ARIN
OrgAbuseName:   IAD-ARIN
OrgAbusePhone:  +1-877-206-4253 
OrgAbuseEmail:  abuse@ionos.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/IADAR5-ARIN

OrgTechHandle: 1NO-ARIN
OrgTechName:   1and1 ARIN Role
OrgTechPhone:  +1-913-433-7549 
OrgTechEmail:  arin-role@net.ionos.com
OrgTechRef:    https://rdap.arin.net/registry/entity/1NO-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.
#