WHOIS

Lookup an IP or domain. Uses IANA referral first, then registry WHOIS.
Query
128.238.2.38
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:      128.0.0.0 - 128.255.255.255
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 128.238.2.38"
#
# Use "?" to get help.
#

NetRange:       128.238.0.0 - 128.238.255.255
CIDR:           128.238.0.0/16
NetName:        POLY-U-NET
NetHandle:      NET-128-238-0-0-1
Parent:         NET128 (NET-128-0-0-0-0)
NetType:        Direct Allocation
OriginAS:       
Organization:   Polytechnic University (POLYTE-1)
RegDate:        1987-05-06
Updated:        2021-12-14
Ref:            https://rdap.arin.net/registry/ip/128.238.0.0


OrgName:        Polytechnic University
OrgId:          POLYTE-1
Address:        6 Metotech Center
City:           Brooklyn
StateProv:      NY
PostalCode:     11201
Country:        US
RegDate:        
Updated:        2011-09-24
Ref:            https://rdap.arin.net/registry/entity/POLYTE-1


OrgAbuseHandle: NA23-ORG-ARIN
OrgAbuseName:   Network Administrator
OrgAbusePhone:  +1-212-998-3333 
OrgAbuseEmail:  noc-na23-poly-arin@nyu.edu
OrgAbuseRef:    https://rdap.arin.net/registry/entity/NA23-ORG-ARIN

OrgTechHandle: NA23-ORG-ARIN
OrgTechName:   Network Administrator
OrgTechPhone:  +1-212-998-3333 
OrgTechEmail:  noc-na23-poly-arin@nyu.edu
OrgTechRef:    https://rdap.arin.net/registry/entity/NA23-ORG-ARIN

RTechHandle: NA23-ORG-ARIN
RTechName:   Network Administrator
RTechPhone:  +1-212-998-3333 
RTechEmail:  noc-na23-poly-arin@nyu.edu
RTechRef:    https://rdap.arin.net/registry/entity/NA23-ORG-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.
#