[ IP ]

128.187.40.23

#518,273Top IPs · 1M scope0 domains

Overview

Top IPs list rank

1M: #518,273(8 observation hits)

Hosted domains (90 days): 0
Hosted domains (all time): 0
First seen: Wed Jul 15 2026 18:09:35 GM
Last seen: Sun Aug 30 2026 18:20:35 GM
PDNS hits (90 days): 9
Country: US
Snapshot: 1970-01-01

Network operated by Brigham Young University (BYU-Z) (BYU-NET).

List rank history

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

Whois — 128.187.40.23

Netname: BYU-NET
Organization: Brigham Young University (BYU-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:       128.187.0.0 - 128.187.255.255
CIDR:           128.187.0.0/16
NetName:        BYU-NET
NetHandle:      NET-128-187-0-0-1
Parent:         NET128 (NET-128-0-0-0-0)
NetType:        Direct Allocation
OriginAS:       
Organization:   Brigham Young University (BYU-Z)
RegDate:        1987-01-07
Updated:        2025-03-05
Ref:            https://rdap.arin.net/registry/ip/128.187.0.0


OrgName:        Brigham Young University
OrgId:          BYU-Z
Address:        University Hill
City:           Provo
StateProv:      UT
PostalCode:     84602
Country:        US
RegDate:        2023-06-20
Updated:        2026-06-02
Ref:            https://rdap.arin.net/registry/entity/BYU-Z


OrgTechHandle: SESSI-ARIN
OrgTechName:   Sessions, Shaun 
OrgTechPhone:  +1-208-496-7099 
OrgTechEmail:  [email protected]
OrgTechRef:    https://rdap.arin.net/registry/entity/SESSI-ARIN

OrgAbuseHandle: CSOC2-ARIN
OrgAbuseName:   CES Security Operations Center
OrgAbusePhone:  +1-801-422-7788 
OrgAbuseEmail:  [email protected]
OrgAbuseRef:    https://rdap.arin.net/registry/entity/CSOC2-ARIN

OrgTechHandle: MALQU-ARIN
OrgTechName:   Malquist, Craig 
OrgTechPhone:  +1-801-422-9200 
OrgTechEmail:  [email protected]
OrgTechRef:    https://rdap.arin.net/registry/entity/MALQU-ARIN

OrgTechHandle: MEL71-ARIN
OrgTechName:   Longhurst, Mark Evan
OrgTechPhone:  +1-801-422-0488 
OrgTechEmail:  [email protected]
OrgTechRef:    https://rdap.arin.net/registry/entity/MEL71-ARIN

RTechHandle: MALQU-ARIN
RTechName:   Malquist, Craig 
RTechPhone:  +1-801-422-9200 
RTechEmail:  [email protected]
RTechRef:    https://rdap.arin.net/registry/entity/MALQU-ARIN

RTechHandle: SESSI-ARIN
RTechName:   Sessions, Shaun 
RTechPhone:  +1-208-496-7099 
RTechEmail:  [email protected]
RTechRef:    https://rdap.arin.net/registry/entity/SESSI-ARIN

RTechHandle: MEL71-ARIN
RTechName:   Longhurst, Mark Evan
RTechPhone:  +1-801-422-0488 
RTechEmail:  [email protected]
RTechRef:    https://rdap.arin.net/registry/entity/MEL71-ARIN

RAbuseHandle: CSOC2-ARIN
RAbuseName:   CES Security Operations Center
RAbusePhone:  +1-801-422-7788 
RAbuseEmail:  [email protected]
RAbuseRef:    https://rdap.arin.net/registry/entity/CSOC2-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
weusemath.org	#1,735,282	2026-07-15	2026-08-30	9