% APNIC found the following authoritative answer from: 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 1997-2024, American Registry for Internet Numbers, Ltd.
#

NetRange:       128.211.0.0 - 128.211.255.255
CIDR:           128.211.0.0/16
NetName:        PURDUE-CS-CYP
NetHandle:      NET-128-211-0-0-1
Parent:         NET128 (NET-128-0-0-0-0)
NetType:        Direct Allocation
OriginAS:       
Organization:   Purdue University (PURDUE-Z)
RegDate:        1987-03-12
Updated:        2022-10-20
Comment:        All SPAM and Abuse complaints should be sent to abuse@purdue.edu
Ref:            https://rdap.arin.net/registry/ip/128.211.0.0

OrgName:        Purdue University
OrgId:          PURDUE-Z
Address:        Information Technology
Address:        155 S. Grant Street
City:           West Lafayette
StateProv:      IN
PostalCode:     47907-2114
Country:        US
RegDate:        2022-10-09
Updated:        2023-09-22
Ref:            https://rdap.arin.net/registry/entity/PURDUE-Z

OrgNOCHandle: PNOC-ARIN
OrgNOCName:   Purdue Network Operations Center
OrgNOCPhone:  +1-765-496-4444 
OrgNOCEmail:  noc@purdue.edu
OrgNOCRef:    https://rdap.arin.net/registry/entity/PNOC-ARIN

OrgDNSHandle: PURDU-ARIN
OrgDNSName:   Purdue Hostmaster
OrgDNSPhone:  +1-765-496-7272 
OrgDNSEmail:  hostmaster@purdue.edu
OrgDNSRef:    https://rdap.arin.net/registry/entity/PURDU-ARIN

OrgTechHandle: PURDU-ARIN
OrgTechName:   Purdue Hostmaster
OrgTechPhone:  +1-765-496-7272 
OrgTechEmail:  hostmaster@purdue.edu
OrgTechRef:    https://rdap.arin.net/registry/entity/PURDU-ARIN

OrgRoutingHandle: PNOC-ARIN
OrgRoutingName:   Purdue Network Operations Center
OrgRoutingPhone:  +1-765-496-4444 
OrgRoutingEmail:  noc@purdue.edu
OrgRoutingRef:    https://rdap.arin.net/registry/entity/PNOC-ARIN

OrgTechHandle: JUSTI129-ARIN
OrgTechName:   McIntyre, Justin A
OrgTechPhone:  +1-765-496-7272 
OrgTechEmail:  mcintyrj@purdue.edu
OrgTechRef:    https://rdap.arin.net/registry/entity/JUSTI129-ARIN

OrgAbuseHandle: PUISP-ARIN
OrgAbuseName:   Purdue University STEAM-CIRT
OrgAbusePhone:  +1-765-496-1666 
OrgAbuseEmail:  abuse@purdue.edu
OrgAbuseRef:    https://rdap.arin.net/registry/entity/PUISP-ARIN

RTechHandle: DT50-ARIN
RTechName:   Trinkle, Daniel 
RTechPhone:  +1-765-494-7844 
RTechEmail:  trinkle@purdue.edu
RTechRef:    https://rdap.arin.net/registry/entity/DT50-ARIN

RAbuseHandle: PUISP-ARIN
RAbuseName:   Purdue University STEAM-CIRT
RAbusePhone:  +1-765-496-1666 
RAbuseEmail:  abuse@purdue.edu
RAbuseRef:    https://rdap.arin.net/registry/entity/PUISP-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 1997-2024, American Registry for Internet Numbers, Ltd.
#

Search for
IP address lookups			Miscellaneous queries
-l	1st level less specific		-i	Inverse attributes	None admin-c admin-c,tech-c,zone-c author cross-mnt cross-nfy local-as mbrs-by-ref member-of mnt-by mnt-lower mnt-nfy mnt-routes notify nserver origin person referral-by rev-srv sub-dom tech-c upd-to zone-c
-L	All less specific		-T	Object types	All as-block as-set aut-num domain filter-set inet-rtr inet6num inetnum irt key-cert mntner peering-set person role route route-set rtr-set
-m	1st level more specific
-M	All more specific		Query hints Include "AS" in front of an AS number. Example: AS4808 Include "-t" (template only) or "-v" (template and description) in front of an object name to view the template Example: -t inetnum
-x	Exact match only
-d	Associated reverse domain