WHOIS

Lookup an IP or domain. Uses IANA referral first, then registry WHOIS.
Query
204.77.153.8
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:      204.0.0.0 - 204.255.255.255
organisation: ARIN
status:       ALLOCATED

whois:        whois.arin.net

changed:      1994-03
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 204.77.153.8"
#
# Use "?" to get help.
#

NetRange:       204.77.153.0 - 204.77.153.255
CIDR:           204.77.153.0/24
NetName:        PHILLYHQ
NetHandle:      NET-204-77-153-0-1
Parent:         NET204 (NET-204-0-0-0-0)
NetType:        Direct Allocation
OriginAS:       
Organization:   Customized Energy Solutions, Ltd. (CESL-3)
RegDate:        2011-09-26
Updated:        2021-12-14
Comment:        http://www.ces-ltd.com
Ref:            https://rdap.arin.net/registry/ip/204.77.153.0


OrgName:        Customized Energy Solutions, Ltd.
OrgId:          CESL-3
Address:        1528 Walnut St.
Address:        22nd Floor
City:           Philadelphia
StateProv:      PA
PostalCode:     19102
Country:        US
RegDate:        2011-08-18
Updated:        2011-08-18
Comment:        24-hour Staffed Operations Center
Ref:            https://rdap.arin.net/registry/entity/CESL-3


OrgTechHandle: CAA15-ARIN
OrgTechName:   CES ARIN Administrator
OrgTechPhone:  +1-215-875-9440 
OrgTechEmail:  administrator@ces-ltd.com
OrgTechRef:    https://rdap.arin.net/registry/entity/CAA15-ARIN

OrgAbuseHandle: CAA15-ARIN
OrgAbuseName:   CES ARIN Administrator
OrgAbusePhone:  +1-215-875-9440 
OrgAbuseEmail:  administrator@ces-ltd.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/CAA15-ARIN

OrgNOCHandle: CAA15-ARIN
OrgNOCName:   CES ARIN Administrator
OrgNOCPhone:  +1-215-875-9440 
OrgNOCEmail:  administrator@ces-ltd.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/CAA15-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.
#