Organization
Zscaler, Inc.
ZSCALER-CHI1
Location
Chicago (Near South Side)
Illinois, United States (US)
Hostname
—
Geolocation
United States (US) United States
- Country
- United States (US)
- Region
- Illinois
- City
- Chicago (Near South Side)
- Continent
- North America
- Coordinates
- 41.8531, -87.6183 View on map ↗
Network Information
IP Range 137.83.166.0 – 137.83.166.255 CIDR 137.83.166.0/24 Network Name ZSCALER-CHI1 Handle NET-137-83-166-0-1 Type ASSIGNMENT Parent Network NET-137-83-128-0-1 Organization Zscaler, Inc. Organization ID C07777984 Address 350 E. Cermak Rd., Chicago, IL, 60616, United States Country United States (US) Registry ARIN Registered On Feb 24, 2021 Last Updated Feb 24, 2021 Status
active
ASN & Routing
Origin AS AS22616 AS Name ZSCALER-SJC1 - ZSCALER, INC., US Announced Prefix 137.83.166.0/24 AS Registry ARIN Prefix Country United States (US) Allocated 2019-01-30 RPKI Origin Valid (covered by a matching ROA)
Reverse DNS
No PTR record is published for this address.
Abuse Contact
Raw RDAP Response
{
"arin_originas0_originautnums": [],
"cidr0_cidrs": [
{
"v4prefix": "137.83.166.0",
"length": 24
}
],
"endAddress": "137.83.166.255",
"entities": [
{
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-08-18T14:34:50-04:00"
},
{
"eventAction": "registration",
"eventDate": "2023-06-02T12:49:30-04:00"
}
],
"handle": "MMT31-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/MMT31-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/137.83.166.0"
},
{
"href": "https://whois.arin.net/rest/poc/MMT31-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/137.83.166.0"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"REDACTED"
],
[
"kind",
{},
"text",
"individual"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-08-21T18:47:55-04:00"
},
{
"eventAction": "registration",
"eventDate": "2025-08-22T06:12:17-04:00"
}
],
"handle": "CHANG452-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/CHANG452-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/137.83.166.0"
},
{
"href": "https://whois.arin.net/rest/poc/CHANG452-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/137.83.166.0"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"administrative"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"REDACTED"
],
[
"kind",
{},
"text",
"individual"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2024-10-16T19:31:00-04:00"
},
{
"eventAction": "registration",
"eventDate": "2014-09-29T18:43:43-04:00"
}
],
"handle": "POCAB2-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/POCAB2-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/137.83.166.0"
},
{
"href": "https://whois.arin.net/rest/poc/POCAB2-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/137.83.166.0"
}
],
"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 2025-10-16"
],
"title": "Unvalidated POC"
}
],
"roles": [
"abuse"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "120 Holger Way Fl 7\nSan Jose\nCA\n95134\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"poc-abuse"
],
[
"org",
{},
"text",
"Zscaler Inc."
],
[
"kind",
{},
"text",
"group"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-408-701-0534"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2024-10-16T19:31:09-04:00"
},
{
"eventAction": "registration",
"eventDate": "2014-09-29T19:51:51-04:00"
}
],
"handle": "POCNO1-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/POCNO1-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/137.83.166.0"
},
{
"href": "https://whois.arin.net/rest/poc/POCNO1-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/137.83.166.0"
}
],
"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 2025-10-16"
],
"title": "Unvalidated POC"
}
],
"roles": [
"noc"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "120 Holger Way Fl 7\nSan Jose\nCA\n95134\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"poc-noc"
],
[
"org",
{},
"text",
"Zscaler Inc."
],
[
"kind",
{},
"text",
"group"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-408-701-0534"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2024-10-16T19:31:15-04:00"
},
{
"eventAction": "registration",
"eventDate": "2014-09-29T19:53:52-04:00"
}
],
"handle": "POCTE3-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/POCTE3-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/137.83.166.0"
},
{
"href": "https://whois.arin.net/rest/poc/POCTE3-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/137.83.166.0"
}
],
"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 2025-10-16"
],
"title": "Unvalidated POC"
}
],
"roles": [
"technical"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "120 Holger Way Fl 7\nSan Jose\nCA\n95134\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"poc-tech"
],
[
"org",
{},
"text",
"Zscaler Inc."
],
[
"kind",
{},
"text",
"group"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-408-701-0534"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-11-06T13:57:46-05:00"
},
{
"eventAction": "registration",
"eventDate": "2011-03-18T12:23:24-04:00"
}
],
"handle": "ZSCAL",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/ZSCAL",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/137.83.166.0"
},
{
"href": "https://whois.arin.net/rest/org/ZSCAL",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/137.83.166.0"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"Zscaler customer traffic originates from colocation facilities around the world. You should *NOT* use the address or contact information here for the purposes of geolocation. Additionally, because traffic egressing our network may belong to any one of our customers, you should not assume that this traffic belongs to us.\r",
"\r",
"For network or security incidents, please reach out to our abuse POC, which is actually monitored and actioned."
],
"title": "Registration Comments"
}
],
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"ZSCALER, INC."
],
[
"adr",
{
"label": "120 Holger Way\nSan Jose\nCA\n95134\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
{},
"text",
"org"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2021-02-24T14:11:51-05:00"
},
{
"eventAction": "registration",
"eventDate": "2021-02-24T14:11:51-05:00"
}
],
"handle": "C07777984",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/C07777984",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/137.83.166.0"
},
{
"href": "https://whois.arin.net/rest/customer/C07777984",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/137.83.166.0"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"Zscaler, Inc."
],
[
"adr",
{
"label": "350 E. Cermak Rd.\nChicago\nIL\n60616\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
{},
"text",
"org"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2021-02-24T14:11:52-05:00"
},
{
"eventAction": "registration",
"eventDate": "2021-02-24T14:11:52-05:00"
}
],
"handle": "NET-137-83-166-0-1",
"ipVersion": "v4",
"links": [
{
"href": "https://rdap.arin.net/registry/ip/137.83.166.0",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/137.83.166.0"
},
{
"href": "https://whois.arin.net/rest/net/NET-137-83-166-0-1",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/137.83.166.0"
},
{
"href": "https://rdap.arin.net/registry/ip/137.83.128.0/18",
"rel": "up",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/137.83.166.0"
}
],
"name": "ZSCALER-CHI1",
"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/137.83.166.0"
}
],
"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/137.83.166.0"
}
],
"title": "Whois Inaccuracy Reporting"
},
{
"description": [
"Copyright 1997-2026, American Registry for Internet Numbers, Ltd."
],
"title": "Copyright Notice"
}
],
"objectClassName": "ip network",
"parentHandle": "NET-137-83-128-0-1",
"port43": "whois.arin.net",
"rdapConformance": [
"nro_rdap_profile_0",
"rdap_level_0",
"cidr0",
"arin_originas0"
],
"startAddress": "137.83.166.0",
"status": [
"active"
],
"type": "ASSIGNMENT"
} Contact details of private individuals are redacted.