[ IP ]

134.4.25.27

#387,557Top IPs · 1M scope0 domains

Overview

Top IPs list rank

1M: #387,557(10 observation hits)

Hosted domains (90 days): 0
Hosted domains (all time): 0
First seen
Last seen: Sun Aug 30 2026 17:02:26 GM
PDNS hits (90 days): 10
Country: US
Snapshot: 1970-01-01

Network operated by California Institute of Technology (CIT-4-Z) (CALTECH-IPAC).

List rank history

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

Whois — 134.4.25.27

Netname: CALTECH-IPAC
Organization: California Institute of Technology (CIT-4-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:       134.4.0.0 - 134.4.255.255
CIDR:           134.4.0.0/16
NetName:        CALTECH-IPAC
NetHandle:      NET-134-4-0-0-1
Parent:         NET134 (NET-134-0-0-0-0)
NetType:        Direct Allocation
OriginAS:       
Organization:   California Institute of Technology (CIT-4-Z)
RegDate:        1989-04-07
Updated:        2023-08-29
Ref:            https://rdap.arin.net/registry/ip/134.4.0.0


OrgName:        California Institute of Technology
OrgId:          CIT-4-Z
Address:        1200 East California Boulevard
Address:        MS 1-10
City:           Pasadena
StateProv:      CA
PostalCode:     91125
Country:        US
RegDate:        2023-08-22
Updated:        2023-08-22
Ref:            https://rdap.arin.net/registry/entity/CIT-4-Z


OrgAbuseHandle: CI2-ORG-ARIN
OrgAbuseName:   Caltech Network Operations Center
OrgAbusePhone:  +1-626-395-3500 
OrgAbuseEmail:  [email protected]
OrgAbuseRef:    https://rdap.arin.net/registry/entity/CI2-ORG-ARIN

OrgTechHandle: CI2-ORG-ARIN
OrgTechName:   Caltech Network Operations Center
OrgTechPhone:  +1-626-395-3500 
OrgTechEmail:  [email protected]
OrgTechRef:    https://rdap.arin.net/registry/entity/CI2-ORG-ARIN

RTechHandle: CI2-ORG-ARIN
RTechName:   Caltech Network Operations Center
RTechPhone:  +1-626-395-3500 
RTechEmail:  [email protected]
RTechRef:    https://rdap.arin.net/registry/entity/CI2-ORG-ARIN

RAbuseHandle: NETWO4337-ARIN
RAbuseName:   Network Operations
RAbusePhone:  +1-626-395-5980 
RAbuseEmail:  [email protected]
RAbuseRef:    https://rdap.arin.net/registry/entity/NETWO4337-ARIN

RAbuseHandle: CI2-ORG-ARIN
RAbuseName:   Caltech Network Operations Center
RAbusePhone:  +1-626-395-3500 
RAbuseEmail:  [email protected]
RAbuseRef:    https://rdap.arin.net/registry/entity/CI2-ORG-ARIN

RNOCHandle: NETWO4337-ARIN
RNOCName:   Network Operations
RNOCPhone:  +1-626-395-5980 
RNOCEmail:  [email protected]
RNOCRef:    https://rdap.arin.net/registry/entity/NETWO4337-ARIN

RNOCHandle: CI2-ORG-ARIN
RNOCName:   Caltech Network Operations Center
RNOCPhone:  +1-626-395-3500 
RNOCEmail:  [email protected]
RNOCRef:    https://rdap.arin.net/registry/entity/CI2-ORG-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
caltech.edu	#18,201	2026-07-14	2026-08-30	10