[ IP ]

128.104.26.71

#434,496Top IPs · 1M scope0 domains

Overview

Top IPs list rank

1M: #434,496(10 observation hits)

Hosted domains (90 days): 0
Hosted domains (all time): 0
First seen
Last seen: Fri Aug 28 2026 18:22:38 GM
PDNS hits (90 days): 10
Country: US
Snapshot: 1970-01-01

Network operated by University of Wisconsin Madison (UWM-3-Z) (WISC-HERD).

List rank history

30 daily snapshots in the Top IPs list (1M scope). Lower rank numbers indicate more accumulated passive-DNS observation evidence.

Whois — 128.104.26.71

Netname: WISC-HERD
Organization: University of Wisconsin Madison (UWM-3-Z)
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.
#


NetRange:       128.104.0.0 - 128.104.255.255
CIDR:           128.104.0.0/16
NetName:        WISC-HERD
NetHandle:      NET-128-104-0-0-1
Parent:         NET128 (NET-128-0-0-0-0)
NetType:        Direct Allocation
OriginAS:       
Organization:   University of Wisconsin Madison (UWM-3-Z)
RegDate:        1986-01-29
Updated:        2024-01-19
Ref:            https://rdap.arin.net/registry/ip/128.104.0.0


OrgName:        University of Wisconsin Madison
OrgId:          UWM-3-Z
Address:        1210 W Dayton
Address:        B332
City:           Madison
StateProv:      WI
PostalCode:     53706
Country:        US
RegDate:        2023-09-28
Updated:        2026-06-12
Ref:            https://rdap.arin.net/registry/entity/UWM-3-Z


OrgTechHandle: NOC212-ARIN
OrgTechName:   Network Operations Center
OrgTechPhone:  +1-608-263-4188 
OrgTechEmail:  [email protected]
OrgTechRef:    https://rdap.arin.net/registry/entity/NOC212-ARIN

OrgAbuseHandle: UWMAP-ARIN
OrgAbuseName:   University of Wisconsin Madison Abuse POC
OrgAbusePhone:  +1-608-264-4357 
OrgAbuseEmail:  [email protected]
OrgAbuseRef:    https://rdap.arin.net/registry/entity/UWMAP-ARIN

OrgNOCHandle: NOC212-ARIN
OrgNOCName:   Network Operations Center
OrgNOCPhone:  +1-608-263-4188 
OrgNOCEmail:  [email protected]
OrgNOCRef:    https://rdap.arin.net/registry/entity/NOC212-ARIN

OrgDNSHandle: UWMHP-ARIN
OrgDNSName:   University of Wisconsin Madison Hostmaster POC
OrgDNSPhone:  +1-608-263-4188 
OrgDNSEmail:  [email protected]
OrgDNSRef:    https://rdap.arin.net/registry/entity/UWMHP-ARIN

OrgRoutingHandle: NOC212-ARIN
OrgRoutingName:   Network Operations Center
OrgRoutingPhone:  +1-608-263-4188 
OrgRoutingEmail:  [email protected]
OrgRoutingRef:    https://rdap.arin.net/registry/entity/NOC212-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.
#

Hosted domains — PDNS pivot

Domain	Rank	First seen	Last seen	Hits
wisc.edu	#6,214	2026-07-14	2026-08-28	10