Organization
University of Colorado Denver
CUDENVER
Registered
May 05, 2000
26 years ago
IPv4 Prefixes
2
131,072 addresses
IPv6 Prefixes
1
256 × /48
BGP Neighbours
3
2 upstream/peer · 1 downstream
Registration
AS Number AS16519 AS Name CUDENVER Organization University of Colorado Denver Organization ID UCAD-1 Address 1945 N. Wheeling St, Aurora, CO, 80045, United States Country United States (US) Registry ARIN Allocated May 05, 2000 Record Created May 05, 2000 Last Updated Jan 07, 2026 Status
active
WHOIS Server whois.arin.net AS Description CUDENVER - University of Colorado Denver, US Abuse Email [email protected] Abuse Phone +1-303-724-0010 IPv4 Prefixes
2 prefixes · 131,072 addresses Routing data as of 2026-10-17 00:00 UTC
| Prefix | Range | Addresses |
|---|---|---|
| 132.194.0.0/16 | 132.194.0.0 – 132.194.255.255 | 65,536 |
| 140.226.0.0/16 | 140.226.0.0 – 140.226.255.255 | 65,536 |
IPv6 Prefixes
1 prefix · 256 × /48 Routing data as of 2026-10-17 00:00 UTC
| Prefix | Addresses |
|---|---|
| 2620:123:5000:: | 288 |
BGP Neighbours
3 unique neighbours · 2 upstream/peer · 1 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. Networks seen to the right of this AS in BGP paths — networks whose routes it carries, typically its customers (downstreams). Upstream & peer side (2)
Downstream side (1)
AS Name AS paths IPv4 sightings IPv6 sightings AS394209 ECBOCES-VNETS - East Central BOCES 14 36 0
Raw RDAP Response
{
"endAutnum": 16519,
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2023-08-18T10:38:57-04:00"
},
{
"eventAction": "registration",
"eventDate": "2015-08-05T13:17:28-04:00"
}
],
"handle": "ARTWI-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/ARTWI-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/16519"
},
{
"href": "https://whois.arin.net/rest/poc/ARTWI-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/16519"
}
],
"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 2024-08-17"
],
"title": "Unvalidated POC"
}
],
"roles": [
"abuse",
"noc",
"routing",
"technical"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "1945 N Wheeling St\nAurora\nCO\n80045\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"Piotr Artwich"
],
[
"n",
{},
"text",
[
"Artwich",
"Piotr",
"",
"",
""
]
],
[
"kind",
{},
"text",
"individual"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-303-724-7878"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-01-06T15:09:11-05:00"
},
{
"eventAction": "registration",
"eventDate": "2022-11-09T13:31:36-05:00"
}
],
"handle": "LINDG32-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/LINDG32-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/16519"
},
{
"href": "https://whois.arin.net/rest/poc/LINDG32-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/16519"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"abuse",
"routing",
"technical",
"administrative",
"noc"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "1945 N Wheeling St\nAurora\nCO\n80045\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"Mattias Lindgren"
],
[
"n",
{},
"text",
[
"Lindgren",
"Mattias",
"",
"",
""
]
],
[
"kind",
{},
"text",
"individual"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-303-724-0010"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2024-09-25T12:11:38-04:00"
},
{
"eventAction": "registration",
"eventDate": "2000-05-05T00:00:00-04:00"
}
],
"handle": "UCAD-1",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/UCAD-1",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/16519"
},
{
"href": "https://whois.arin.net/rest/org/UCAD-1",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/16519"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"University of Colorado Denver"
],
[
"adr",
{
"label": "1945 N. Wheeling St\nAurora\nCO\n80045\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
{},
"text",
"org"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-01-06T15:09:11-05:00"
},
{
"eventAction": "registration",
"eventDate": "2022-11-09T13:31:36-05:00"
}
],
"handle": "LINDG32-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/LINDG32-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/16519"
},
{
"href": "https://whois.arin.net/rest/poc/LINDG32-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/16519"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"technical",
"abuse",
"noc"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "1945 N Wheeling St\nAurora\nCO\n80045\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"Mattias Lindgren"
],
[
"n",
{},
"text",
[
"Lindgren",
"Mattias",
"",
"",
""
]
],
[
"kind",
{},
"text",
"individual"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-303-724-0010"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-01-07T11:05:46-05:00"
},
{
"eventAction": "registration",
"eventDate": "2000-05-05T00:00:00-04:00"
}
],
"handle": "AS16519",
"links": [
{
"href": "https://rdap.arin.net/registry/autnum/16519",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/16519"
},
{
"href": "https://whois.arin.net/rest/asn/AS16519",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/16519"
}
],
"name": "CUDENVER",
"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/16519"
}
],
"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/16519"
}
],
"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": 16519,
"status": [
"active"
]
} Contact details of private individuals are redacted.