% 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:       152.216.0.0 - 152.225.255.255
CIDR:           152.224.0.0/15, 152.216.0.0/13
NetName:        IRSNET
NetHandle:      NET-152-216-0-0-1
Parent:         NET152 (NET-152-0-0-0-0)
NetType:        Direct Allocation
OriginAS:       
Organization:   Internal Revenue Service (IRS-Z)
RegDate:        1991-09-23
Updated:        2021-12-14
Ref:            https://rdap.arin.net/registry/ip/152.216.0.0

OrgName:        Internal Revenue Service
OrgId:          IRS-Z
Address:        1111 Constitution Ave. NW
City:           Washington
StateProv:      DC
PostalCode:     20224
Country:        US
RegDate:        2010-10-13
Updated:        2022-10-13
Ref:            https://rdap.arin.net/registry/entity/IRS-Z

OrgAbuseHandle: CSIRC1-ARIN
OrgAbuseName:   CSIRC
OrgAbusePhone:  +1-240-613-3606 
OrgAbuseEmail:  abuse@irs.gov
OrgAbuseRef:    https://rdap.arin.net/registry/entity/CSIRC1-ARIN

OrgTechHandle: RTB6-ARIN
OrgTechName:   Butts, Robert Todd
OrgTechPhone:  +1-681-260-3304 
OrgTechEmail:  robert.t.butts@irs.gov
OrgTechRef:    https://rdap.arin.net/registry/entity/RTB6-ARIN

OrgTechHandle: JALBE5-ARIN
OrgTechName:   Jalbert, Patrick 
OrgTechPhone:  +1-240-613-3369 
OrgTechEmail:  patrick.a.jalbert@irs.gov
OrgTechRef:    https://rdap.arin.net/registry/entity/JALBE5-ARIN

OrgNOCHandle: NMC6-ARIN
OrgNOCName:   NMC
OrgNOCPhone:  +1-202-283-4590 
OrgNOCEmail:  csirc@csirc.irs.gov
OrgNOCRef:    https://rdap.arin.net/registry/entity/NMC6-ARIN

OrgTechHandle: BBW8-ARIN
OrgTechName:   Wibbing, Bradley B
OrgTechPhone:  +1-304-264-7531 
OrgTechEmail:  Bradley.B.Wibbing@irs.gov
OrgTechRef:    https://rdap.arin.net/registry/entity/BBW8-ARIN

OrgTechHandle: MORIZ-ARIN
OrgTechName:   Morizot, Scott 
OrgTechPhone:  +1-512-460-2605 
OrgTechEmail:  timothy.s.morizot@irs.gov
OrgTechRef:    https://rdap.arin.net/registry/entity/MORIZ-ARIN

RTechHandle: MORIZ-ARIN
RTechName:   Morizot, Scott 
RTechPhone:  +1-512-460-2605 
RTechEmail:  timothy.s.morizot@irs.gov
RTechRef:    https://rdap.arin.net/registry/entity/MORIZ-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.
#

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