160.20.33.0/24

NetRange:       160.20.32.0 - 160.20.35.255
CIDR:           160.20.32.0/22
NetName:        LACNIC
NetHandle:      NET-160-20-32-0-1
Parent:         NET160 (NET-160-0-0-0-0)
NetType:        Transferred to LACNIC
OriginAS:       
Organization:   Latin American and Caribbean IP address Regional Registry (LACNIC)
RegDate:        2017-03-02
Updated:        2017-03-02
Ref:            https://rdap.arin.net/registry/ip/160.20.32.0

OrgName:        Latin American and Caribbean IP address Regional Registry
OrgId:          LACNIC
Address:        Rambla Republica de Mexico 6125
City:           Montevideo
StateProv:      
PostalCode:     11400
Country:        UY
RegDate:        2002-07-27
Updated:        2018-03-15
Ref:            https://rdap.arin.net/registry/entity/LACNIC

ReferralServer:  whois://whois.lacnic.net
ResourceLink:  http://lacnic.net/cgi-bin/lacnic/whois

OrgTechHandle: LACNIC-ARIN
OrgTechName:   LACNIC Whois Info
OrgTechPhone:  +598-2604-2222 
OrgTechEmail:  whois-contact@lacnic.net
OrgTechRef:    https://rdap.arin.net/registry/entity/LACNIC-ARIN

OrgAbuseHandle: LWI100-ARIN
OrgAbuseName:   LACNIC Whois Info
OrgAbusePhone:  +598-2604-2222 
OrgAbuseEmail:  abuse@lacnic.net
OrgAbuseRef:    https://rdap.arin.net/registry/entity/LWI100-ARIN

Found a referral to whois.lacnic.net.