Organization
University of Illinois Chicago
UIC-AS
Registered
—
IPv4 Prefixes
7
131,328 addresses
IPv6 Prefixes
1
1 × /48
BGP Neighbours
4
4 upstream/peer · 0 downstream
Registration
AS Number AS6200 AS Name UIC-AS Organization University of Illinois Chicago Organization ID UIAC-Z Address ACCC MC 135, 1940 West Taylor Avenue, Chicago, IL, 60612-7352, United States Country United States (US) Registry ARIN Last Updated Apr 12, 2024 Status
active
WHOIS Server whois.arin.net AS Description UIC-AS - University of Illinois Chicago, US Abuse Email [email protected] Abuse Phone +1-312-996-9221 IPv4 Prefixes
7 prefixes · 131,328 addresses · 3 top-level Routing data as of 2026-10-09 00:00 UTC
| Prefix | Range | Addresses |
|---|---|---|
| 128.248.0.0/16 | 128.248.0.0 – 128.248.255.255 | 65,536 |
| 128.248.5.0/24 | 128.248.5.0 – 128.248.5.255 | 256 |
| 128.248.30.0/24 | 128.248.30.0 – 128.248.30.255 | 256 |
| 131.193.0.0/16 | 131.193.0.0 – 131.193.255.255 | 65,536 |
| 131.193.34.0/24 | 131.193.34.0 – 131.193.34.255 | 256 |
| 131.193.182.0/23 | 131.193.182.0 – 131.193.183.255 | 512 |
| 192.43.252.0/24 | 192.43.252.0 – 192.43.252.255 | 256 |
IPv6 Prefixes
1 prefix · 1 × /48 Routing data as of 2026-10-09 00:00 UTC
| Prefix | Addresses |
|---|---|
| 2620:12f:90ff:: | 280 |
BGP Neighbours
4 unique neighbours · 4 upstream/peer · 0 downstream. A neighbour can be seen on more than one side. Rows are ordered by AS paths: the number of BGP paths seen by RIPE RIS that contain the adjacency. Sightings count each IPv4/IPv6 route with the adjacency once per RIS peer that sees it (routes × peers), so they show how widely it is seen, not how many distinct routes it carries. Networks seen to the left of this AS in BGP paths, toward the route collectors — typically its transit providers (upstreams) and peers. Upstream & peer side (4)
Raw RDAP Response
{
"endAutnum": 6200,
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-11-18T12:40:15-05:00"
},
{
"eventAction": "registration",
"eventDate": "2017-01-25T12:36:46-05:00"
}
],
"handle": "CREHA2-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/CREHA2-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/6200"
},
{
"href": "https://whois.arin.net/rest/poc/CREHA2-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/6200"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"administrative",
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"REDACTED"
],
[
"kind",
{},
"text",
"individual"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-08-30T09:24:03-04:00"
},
{
"eventAction": "registration",
"eventDate": "2022-08-30T10:59:42-04:00"
}
],
"handle": "PEREZ906-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/PEREZ906-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/6200"
},
{
"href": "https://whois.arin.net/rest/poc/PEREZ906-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/6200"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"technical",
"abuse"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "728 West Roosevelt Rd\nChicago\nIL\n60607\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"Esteban Perez"
],
[
"n",
{},
"text",
[
"Perez",
"Esteban",
"",
"",
""
]
],
[
"kind",
{},
"text",
"individual"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-312-996-9221"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2024-06-05T10:05:47-04:00"
},
{
"eventAction": "registration",
"eventDate": "2024-06-05T10:05:47-04:00"
}
],
"handle": "NEUMA73-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/NEUMA73-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/6200"
},
{
"href": "https://whois.arin.net/rest/poc/NEUMA73-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/6200"
}
],
"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 2025-06-05"
],
"title": "Unvalidated POC"
}
],
"roles": [
"technical"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"REDACTED"
],
[
"kind",
{},
"text",
"individual"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2024-06-05T13:43:01-04:00"
},
{
"eventAction": "registration",
"eventDate": "2024-06-05T13:43:01-04:00"
}
],
"handle": "NUTAL1-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/NUTAL1-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/6200"
},
{
"href": "https://whois.arin.net/rest/poc/NUTAL1-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/6200"
}
],
"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 2025-06-05"
],
"title": "Unvalidated POC"
}
],
"roles": [
"technical"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"REDACTED"
],
[
"kind",
{},
"text",
"individual"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-05-01T10:57:24-04:00"
},
{
"eventAction": "registration",
"eventDate": "2023-02-01T19:37:03-05:00"
}
],
"handle": "UIAC-Z",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/UIAC-Z",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/6200"
},
{
"href": "https://whois.arin.net/rest/org/UIAC-Z",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/6200"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"University of Illinois Chicago"
],
[
"adr",
{
"label": "ACCC MC 135\n1940 West Taylor Avenue\nChicago\nIL\n60612-7352\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
{},
"text",
"org"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-11-18T12:40:15-05:00"
},
{
"eventAction": "registration",
"eventDate": "2017-01-25T12:36:46-05:00"
}
],
"handle": "CREHA2-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/CREHA2-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/6200"
},
{
"href": "https://whois.arin.net/rest/poc/CREHA2-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/6200"
}
],
"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": "2026-08-30T09:24:03-04:00"
},
{
"eventAction": "registration",
"eventDate": "2022-08-30T10:59:42-04:00"
}
],
"handle": "PEREZ906-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/PEREZ906-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/6200"
},
{
"href": "https://whois.arin.net/rest/poc/PEREZ906-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/6200"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"abuse",
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "728 West Roosevelt Rd\nChicago\nIL\n60607\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"Esteban Perez"
],
[
"n",
{},
"text",
[
"Perez",
"Esteban",
"",
"",
""
]
],
[
"kind",
{},
"text",
"individual"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-312-996-9221"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2024-03-06T10:48:20-05:00"
},
{
"eventAction": "registration",
"eventDate": "2012-06-01T15:16:28-04:00"
}
],
"handle": "MARCY1-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/MARCY1-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/6200"
},
{
"href": "https://whois.arin.net/rest/poc/MARCY1-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/6200"
}
],
"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 2025-03-06"
],
"title": "Unvalidated POC"
}
],
"roles": [
"technical"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"REDACTED"
],
[
"kind",
{},
"text",
"individual"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2024-04-12T17:23:45-04:00"
}
],
"handle": "AS6200",
"links": [
{
"href": "https://rdap.arin.net/registry/autnum/6200",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/6200"
},
{
"href": "https://whois.arin.net/rest/asn/AS6200",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/6200"
}
],
"name": "UIC-AS",
"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/autnum/6200"
}
],
"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/autnum/6200"
}
],
"title": "Whois Inaccuracy Reporting"
},
{
"description": [
"Copyright 1997-2026, American Registry for Internet Numbers, Ltd."
],
"title": "Copyright Notice"
}
],
"objectClassName": "autnum",
"port43": "whois.arin.net",
"rdapConformance": [
"nro_rdap_profile_0",
"rdap_level_0",
"nro_rdap_profile_asn_flat_0"
],
"startAutnum": 6200,
"status": [
"active"
]
} Contact details of private individuals are redacted.