[ IP ]
166.73.4.197

#357,414Top IPs · 1M scope1 domain
Overview

Top IPs list rank
1M: #357,414(1 domains)
Hosted domains (90 days): 1
Hosted domains (all time): 1
First seen
Last seen: Wed Jul 15 2026 19:26:32 GM
PDNS hits (90 days): 3
Country: US
Snapshot: 1970-01-01
Network operated by Fiserv Solutions, LLC (FSL-293) (FISERV).
List rank history

2 daily snapshots in the Top IPs list (1M scope). Lower rank numbers indicate more hosted domains in scope.
Whois — 166.73.4.197

Netname: FISERV
Organization: Fiserv Solutions, LLC (FSL-293)
Country: US
ASN: —
Full whois record


#
# 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.
#



# start

NetRange:       166.73.0.0 - 166.73.255.255
CIDR:           166.73.0.0/16
NetName:        FISERV
NetHandle:      NET-166-73-0-0-1
Parent:         NET166 (NET-166-0-0-0-0)
NetType:        Direct Allocation
OriginAS:       
Organization:   Fiserv Solutions, LLC (FSL-293)
RegDate:        1993-11-01
Updated:        2025-03-03
Ref:            https://rdap.arin.net/registry/ip/166.73.0.0


OrgName:        Fiserv Solutions, LLC
OrgId:          FSL-293
Address:        255 Fiserv Drive
City:           Brookfield
StateProv:      WI
PostalCode:     53045
Country:        US
RegDate:        2020-06-30
Updated:        2026-07-01
Ref:            https://rdap.arin.net/registry/entity/FSL-293


OrgRoutingHandle: REGIS119-ARIN
OrgRoutingName:   Registrant Admin
OrgRoutingPhone:  +1-888-377-8726 
OrgRoutingEmail:  [email protected]
OrgRoutingRef:    https://rdap.arin.net/registry/entity/REGIS119-ARIN

OrgTechHandle: MADEL6-ARIN
OrgTechName:   Madel, Steve 
OrgTechPhone:  +1-402-770-5406 
OrgTechEmail:  [email protected]
OrgTechRef:    https://rdap.arin.net/registry/entity/MADEL6-ARIN

OrgDNSHandle: REGIS119-ARIN
OrgDNSName:   Registrant Admin
OrgDNSPhone:  +1-888-377-8726 
OrgDNSEmail:  [email protected]
OrgDNSRef:    https://rdap.arin.net/registry/entity/REGIS119-ARIN

OrgRoutingHandle: NOC32256-ARIN
OrgRoutingName:   NOC
OrgRoutingPhone:  +1-678-375-4000 
OrgRoutingEmail:  [email protected]
OrgRoutingRef:    https://rdap.arin.net/registry/entity/NOC32256-ARIN

OrgTechHandle: RIEDE-ARIN
OrgTechName:   Riedener, Peter 
OrgTechPhone:  +1-862-339-5541 
OrgTechEmail:  [email protected]
OrgTechRef:    https://rdap.arin.net/registry/entity/RIEDE-ARIN

OrgDNSHandle: NOC32256-ARIN
OrgDNSName:   NOC
OrgDNSPhone:  +1-678-375-4000 
OrgDNSEmail:  [email protected]
OrgDNSRef:    https://rdap.arin.net/registry/entity/NOC32256-ARIN

OrgTechHandle: PATTE249-ARIN
OrgTechName:   Patterson, Mike 
OrgTechPhone:  +1-678-375-3484 
OrgTechEmail:  [email protected]
OrgTechRef:    https://rdap.arin.net/registry/entity/PATTE249-ARIN

OrgAbuseHandle: REGIS118-ARIN
OrgAbuseName:   Registrant Abuse
OrgAbusePhone:  +1-888-377-8726 
OrgAbuseEmail:  [email protected]
OrgAbuseRef:    https://rdap.arin.net/registry/entity/REGIS118-ARIN

OrgTechHandle: DOE2-ARIN
OrgTechName:   Oehlerking, David 
OrgTechPhone:  +1-402-689-1246 
OrgTechEmail:  [email protected]
OrgTechRef:    https://rdap.arin.net/registry/entity/DOE2-ARIN

OrgNOCHandle: NOC32256-ARIN
OrgNOCName:   NOC
OrgNOCPhone:  +1-678-375-4000 
OrgNOCEmail:  [email protected]
OrgNOCRef:    https://rdap.arin.net/registry/entity/NOC32256-ARIN

OrgTechHandle: NOC32256-ARIN
OrgTechName:   NOC
OrgTechPhone:  +1-678-375-4000 
OrgTechEmail:  [email protected]
OrgTechRef:    https://rdap.arin.net/registry/entity/NOC32256-ARIN

OrgTechHandle: GGT3-ARIN
OrgTechName:   Tempesta, George George
OrgTechPhone:  +1-302-416-9225 
OrgTechEmail:  [email protected]
OrgTechRef:    https://rdap.arin.net/registry/entity/GGT3-ARIN

OrgTechHandle: FUNKZ-ARIN
OrgTechName:   Funk, Zahn 
OrgTechPhone:  +1-614-561-4843 
OrgTechEmail:  [email protected]
OrgTechRef:    https://rdap.arin.net/registry/entity/FUNKZ-ARIN

OrgTechHandle: JM2443-ARIN
OrgTechName:   MORAN, JAY 
OrgTechPhone:  +1-470-669-6999 
OrgTechEmail:  [email protected]
OrgTechRef:    https://rdap.arin.net/registry/entity/JM2443-ARIN

OrgNOCHandle: REGIS119-ARIN
OrgNOCName:   Registrant Admin
OrgNOCPhone:  +1-888-377-8726 
OrgNOCEmail:  [email protected]
OrgNOCRef:    https://rdap.arin.net/registry/entity/REGIS119-ARIN

OrgTechHandle: CAMAC107-ARIN
OrgTechName:   Camacho, Kevin 
OrgTechPhone:  +1-531-910-3915 
OrgTechEmail:  [email protected]
OrgTechRef:    https://rdap.arin.net/registry/entity/CAMAC107-ARIN

OrgTechHandle: DOSTE5-ARIN
OrgTechName:   Doster, Tarvaris 
OrgTechPhone:  +1-404-312-7612 
OrgTechEmail:  [email protected]
OrgTechRef:    https://rdap.arin.net/registry/entity/DOSTE5-ARIN

OrgAbuseHandle: NOC32256-ARIN
OrgAbuseName:   NOC
OrgAbusePhone:  +1-678-375-4000 
OrgAbuseEmail:  [email protected]
OrgAbuseRef:    https://rdap.arin.net/registry/entity/NOC32256-ARIN

OrgTechHandle: BRUHN7-ARIN
OrgTechName:   Bruhns, Kyle 
OrgTechPhone:  +1-901-495-5400 
OrgTechEmail:  [email protected]
OrgTechRef:    https://rdap.arin.net/registry/entity/BRUHN7-ARIN

OrgTechHandle: REGIS119-ARIN
OrgTechName:   Registrant Admin
OrgTechPhone:  +1-888-377-8726 
OrgTechEmail:  [email protected]
OrgTechRef:    https://rdap.arin.net/registry/entity/REGIS119-ARIN

# end


# start

NetRange:       166.73.4.0 - 166.73.5.255
CIDR:           166.73.4.0/23
NetName:        NET-166-73-4-0-23
NetHandle:      NET-166-73-4-0-1
Parent:         FISERV (NET-166-73-0-0-1)
NetType:        Reassigned
OriginAS:       
Customer:       Fiserv Solutions, LLC (C11119240)
RegDate:        2025-03-03
Updated:        2025-03-03
Comment:        163.73.4.0/23 is announced by Google BGP BYOIP service.
Ref:            https://rdap.arin.net/registry/ip/166.73.4.0


CustName:       Fiserv Solutions, LLC
Address:        255 Fiserv Drive
City:           Brookfield
StateProv:      WI
PostalCode:     53045
Country:        US
RegDate:        2025-03-03
Updated:        2025-03-03
Ref:            https://rdap.arin.net/registry/entity/C11119240

OrgRoutingHandle: REGIS119-ARIN
OrgRoutingName:   Registrant Admin
OrgRoutingPhone:  +1-888-377-8726 
OrgRoutingEmail:  [email protected]
OrgRoutingRef:    https://rdap.arin.net/registry/entity/REGIS119-ARIN

OrgTechHandle: MADEL6-ARIN
OrgTechName:   Madel, Steve 
OrgTechPhone:  +1-402-770-5406 
OrgTechEmail:  [email protected]
OrgTechRef:    https://rdap.arin.net/registry/entity/MADEL6-ARIN

OrgDNSHandle: REGIS119-ARIN
OrgDNSName:   Registrant Admin
OrgDNSPhone:  +1-888-377-8726 
OrgDNSEmail:  [email protected]
OrgDNSRef:    https://rdap.arin.net/registry/entity/REGIS119-ARIN

OrgRoutingHandle: NOC32256-ARIN
OrgRoutingName:   NOC
OrgRoutingPhone:  +1-678-375-4000 
OrgRoutingEmail:  [email protected]
OrgRoutingRef:    https://rdap.arin.net/registry/entity/NOC32256-ARIN

OrgTechHandle: RIEDE-ARIN
OrgTechName:   Riedener, Peter 
OrgTechPhone:  +1-862-339-5541 
OrgTechEmail:  [email protected]
OrgTechRef:    https://rdap.arin.net/registry/entity/RIEDE-ARIN

OrgDNSHandle: NOC32256-ARIN
OrgDNSName:   NOC
OrgDNSPhone:  +1-678-375-4000 
OrgDNSEmail:  [email protected]
OrgDNSRef:    https://rdap.arin.net/registry/entity/NOC32256-ARIN

OrgTechHandle: PATTE249-ARIN
OrgTechName:   Patterson, Mike 
OrgTechPhone:  +1-678-375-3484 
OrgTechEmail:  [email protected]
OrgTechRef:    https://rdap.arin.net/registry/entity/PATTE249-ARIN

OrgAbuseHandle: REGIS118-ARIN
OrgAbuseName:   Registrant Abuse
OrgAbusePhone:  +1-888-377-8726 
OrgAbuseEmail:  [email protected]
OrgAbuseRef:    https://rdap.arin.net/registry/entity/REGIS118-ARIN

OrgTechHandle: DOE2-ARIN
OrgTechName:   Oehlerking, David 
OrgTechPhone:  +1-402-689-1246 
OrgTechEmail:  [email protected]
OrgTechRef:    https://rdap.arin.net/registry/entity/DOE2-ARIN

OrgNOCHandle: NOC32256-ARIN
OrgNOCName:   NOC
OrgNOCPhone:  +1-678-375-4000 
OrgNOCEmail:  [email protected]
OrgNOCRef:    https://rdap.arin.net/registry/entity/NOC32256-ARIN

OrgTechHandle: NOC32256-ARIN
OrgTechName:   NOC
OrgTechPhone:  +1-678-375-4000 
OrgTechEmail:  [email protected]
OrgTechRef:    https://rdap.arin.net/registry/entity/NOC32256-ARIN

OrgTechHandle: GGT3-ARIN
OrgTechName:   Tempesta, George George
OrgTechPhone:  +1-302-416-9225 
OrgTechEmail:  [email protected]
OrgTechRef:    https://rdap.arin.net/registry/entity/GGT3-ARIN

OrgTechHandle: FUNKZ-ARIN
OrgTechName:   Funk, Zahn 
OrgTechPhone:  +1-614-561-4843 
OrgTechEmail:  [email protected]
OrgTechRef:    https://rdap.arin.net/registry/entity/FUNKZ-ARIN

OrgTechHandle: JM2443-ARIN
OrgTechName:   MORAN, JAY 
OrgTechPhone:  +1-470-669-6999 
OrgTechEmail:  [email protected]
OrgTechRef:    https://rdap.arin.net/registry/entity/JM2443-ARIN

OrgNOCHandle: REGIS119-ARIN
OrgNOCName:   Registrant Admin
OrgNOCPhone:  +1-888-377-8726 
OrgNOCEmail:  [email protected]
OrgNOCRef:    https://rdap.arin.net/registry/entity/REGIS119-ARIN

OrgTechHandle: CAMAC107-ARIN
OrgTechName:   Camacho, Kevin 
OrgTechPhone:  +1-531-910-3915 
OrgTechEmail:  [email protected]
OrgTechRef:    https://rdap.arin.net/registry/entity/CAMAC107-ARIN

OrgTechHandle: DOSTE5-ARIN
OrgTechName:   Doster, Tarvaris 
OrgTechPhone:  +1-404-312-7612 
OrgTechEmail:  [email protected]
OrgTechRef:    https://rdap.arin.net/registry/entity/DOSTE5-ARIN

OrgAbuseHandle: NOC32256-ARIN
OrgAbuseName:   NOC
OrgAbusePhone:  +1-678-375-4000 
OrgAbuseEmail:  [email protected]
OrgAbuseRef:    https://rdap.arin.net/registry/entity/NOC32256-ARIN

OrgTechHandle: BRUHN7-ARIN
OrgTechName:   Bruhns, Kyle 
OrgTechPhone:  +1-901-495-5400 
OrgTechEmail:  [email protected]
OrgTechRef:    https://rdap.arin.net/registry/entity/BRUHN7-ARIN

OrgTechHandle: REGIS119-ARIN
OrgTechName:   Registrant Admin
OrgTechPhone:  +1-888-377-8726 
OrgTechEmail:  [email protected]
OrgTechRef:    https://rdap.arin.net/registry/entity/REGIS119-ARIN

# end



#
# 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.
#
Open ports — 166.73.4.197

Port scan not run for 166.73.4.197 yet. Probes are queued from passive DNS IPs in the worker pipeline.
Hosted domains — PDNS pivot

Domain	Rank	First seen	Last seen	Hits
	#141,208	2026-07-14	2026-07-15	3