WHOIS

Lookup an IP or domain. Uses IANA referral first, then registry WHOIS.
Query
166.252.77.87
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:      166.0.0.0 - 166.255.255.255
organisation: Administered by ARIN
status:       LEGACY

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 166.252.77.87"
#
# Use "?" to get help.
#

NetRange:       166.239.0.0 - 166.255.255.255
CIDR:           166.240.0.0/12, 166.239.0.0/16
NetName:        MCICS
NetHandle:      NET-166-239-0-0-1
Parent:         NET166 (NET-166-0-0-0-0)
NetType:        Direct Allocation
OriginAS:       
Organization:   Verizon Business (MCICS)
RegDate:        2025-03-25
Updated:        2025-03-25
Ref:            https://rdap.arin.net/registry/ip/166.239.0.0



OrgName:        Verizon Business
OrgId:          MCICS
Address:        22001 Loudoun County Pkwy
City:           Ashburn
StateProv:      VA
PostalCode:     20147
Country:        US
RegDate:        2006-05-30
Updated:        2025-10-28
Ref:            https://rdap.arin.net/registry/entity/MCICS


OrgDNSHandle: VZDNS1-ARIN
OrgDNSName:   VZ-DNSADMIN
OrgDNSPhone:  +1-800-900-0241 
OrgDNSEmail:  dnsadmin@verizon.com
OrgDNSRef:    https://rdap.arin.net/registry/entity/VZDNS1-ARIN

OrgTechHandle: SWIPP9-ARIN
OrgTechName:   SWIPPER
OrgTechPhone:  +1-800-900-0241 
OrgTechEmail:  IPMGMT@verizon.com
OrgTechRef:    https://rdap.arin.net/registry/entity/SWIPP9-ARIN

OrgTechHandle: VIS1-ARIN
OrgTechName:   Verizon Internet Services
OrgTechPhone:  +1-800-243-6994 
OrgTechEmail:  IPMGMT@verizon.com
OrgTechRef:    https://rdap.arin.net/registry/entity/VIS1-ARIN

OrgAbuseHandle: ABUSE3-ARIN
OrgAbuseName:   abuse
OrgAbusePhone:  +1-800-900-0241 
OrgAbuseEmail:  abuse@verizon.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/ABUSE3-ARIN

OrgAbuseHandle: ABUSE5603-ARIN
OrgAbuseName:   Abuse
OrgAbusePhone:  +1-800-900-0241 
OrgAbuseEmail:  abuse@verizon.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/ABUSE5603-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.
#