134.4.0.37
Education
Data retrieved at
Network
ASN
IP Range
Company
California Institute of Technology
Network
CALTECH-IPAC
Using networksdb.io for network lookups.
Hostname
Not available.
AS Domain
caltech.edu
Using host.io for pre-visualize domains.
Type
Education
Handle
NET-134-4-0-0-1
Registered
1989-04-07
Last Changed
2023-08-29
View raw RDAP
{
"arin_originas0_originautnums": [],
"cidr0_cidrs": [
{
"v4prefix": "134.4.0.0",
"length": 16
}
],
"endAddress": "134.4.255.255",
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-07-22T03:03:14-04:00"
},
{
"eventAction": "registration",
"eventDate": "1998-07-29T10:52:10-04:00"
}
],
"handle": "CI2-ORG-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/CI2-ORG-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/134.4.0.37"
},
{
"href": "https://whois.arin.net/rest/poc/CI2-ORG-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/134.4.0.37"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"technical",
"administrative",
"abuse"
],
"status": [
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],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "1200 East California Boulevard\r\nMS 1-10\nPasadena\nCA\n91125\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"Caltech Network Operations Center"
],
[
"org",
{},
"text",
"California Institute of Technology"
],
[
"kind",
{},
"text",
"group"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
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]
},
"text",
"+1-626-395-3500"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2023-08-22T16:47:45-04:00"
},
{
"eventAction": "registration",
"eventDate": "2023-08-22T16:47:45-04:00"
}
],
"handle": "CIT-4-Z",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/CIT-4-Z",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/134.4.0.37"
},
{
"href": "https://whois.arin.net/rest/org/CIT-4-Z",
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"roles": [
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],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"California Institute of Technology"
],
[
"adr",
{
"label": "1200 East California Boulevard\nMS 1-10\nPasadena\nCA\n91125\nUnited States"
},
"text",
[
"",
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"",
""
]
],
[
"kind",
{},
"text",
"org"
]
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]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-07-22T03:03:14-04:00"
},
{
"eventAction": "registration",
"eventDate": "1998-07-29T10:52:10-04:00"
}
],
"handle": "CI2-ORG-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/CI2-ORG-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/134.4.0.37"
},
{
"href": "https://whois.arin.net/rest/poc/CI2-ORG-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/134.4.0.37"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"abuse",
"noc",
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "1200 East California Boulevard\r\nMS 1-10\nPasadena\nCA\n91125\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"Caltech Network Operations Center"
],
[
"org",
{},
"text",
"California Institute of Technology"
],
[
"kind",
{},
"text",
"group"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-626-395-3500"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2011-05-10T15:27:40-04:00"
},
{
"eventAction": "registration",
"eventDate": "2011-05-10T15:27:40-04:00"
}
],
"handle": "NETWO4337-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/NETWO4337-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/134.4.0.37"
},
{
"href": "https://whois.arin.net/rest/poc/NETWO4337-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/134.4.0.37"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"ARIN has attempted to validate the data for this POC, but has received no response from the POC since 2012-05-09"
],
"title": "Unvalidated POC"
}
],
"roles": [
"abuse",
"noc"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "770 S. Wilson Avenue\nPasadena\nCA\n91125\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"Network Operations"
],
[
"org",
{},
"text",
"IPAC - Caltech"
],
[
"kind",
{},
"text",
"group"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-626-395-5980"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2023-08-29T12:50:04-04:00"
},
{
"eventAction": "registration",
"eventDate": "1989-04-07T00:00:00-04:00"
}
],
"handle": "NET-134-4-0-0-1",
"ipVersion": "v4",
"links": [
{
"href": "https://rdap.arin.net/registry/ip/134.4.0.0",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/134.4.0.37"
},
{
"href": "https://whois.arin.net/rest/net/NET-134-4-0-0-1",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/134.4.0.37"
}
],
"name": "CALTECH-IPAC",
"notices": [
{
"description": [
"By using the ARIN RDAP/Whois service, you are agreeing to the RDAP/Whois Terms of Use"
],
"links": [
{
"href": "https://www.arin.net/resources/registry/whois/tou/",
"rel": "terms-of-service",
"type": "text/html",
"value": "https://rdap.arin.net/registry/ip/134.4.0.37"
}
],
"title": "Terms of Service"
},
{
"description": [
"If you see inaccuracies in the results, please visit: "
],
"links": [
{
"href": "https://www.arin.net/resources/registry/whois/inaccuracy_reporting/",
"rel": "inaccuracy-report",
"type": "text/html",
"value": "https://rdap.arin.net/registry/ip/134.4.0.37"
}
],
"title": "Whois Inaccuracy Reporting"
},
{
"description": [
"Copyright 1997-2026, American Registry for Internet Numbers, Ltd."
],
"title": "Copyright Notice"
}
],
"objectClassName": "ip network",
"parentHandle": "NET-134-0-0-0-0",
"port43": "whois.arin.net",
"rdapConformance": [
"nro_rdap_profile_0",
"rdap_level_0",
"cidr0",
"arin_originas0"
],
"startAddress": "134.4.0.0",
"status": [
"active"
],
"type": "DIRECT ALLOCATION"
}
Security
No security threats detected for this IP.
VPN
Proxy
Tor
Hosting
Residential Proxy
Bogon
Abuser
Crawler
RPKI
RPKI Origin Validation
RPKI verifies that an IP prefix is legitimately announced by the authorized Autonomous System (ASN) using Route Origin Authorizations (ROAs).
Unknown.
No valid ROA was found for this prefix.
UNKNOWN
Validated Prefix
134.4.0.0/16
Authorized ASN
Not available.
Abuse Contacts
IP Geolocation
Country
United States
City
Pasadena (📍 91105)
California
Time Zone
America/Los_Angeles
Coordinates
34.1361, -118.1672
Continent
North America
European Union
No.
Phone prefix
+1
Currency
US Dollar (USD $)