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Look up an Autonomous System — holder, registry, contacts, announced IPv4/IPv6 prefixes, upstreams and downstreams.
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AS402584
MSUDENVER - Metropolitan Announcing routesAS nameMSUDENVER
OrganisationMetropolitan State University of Denver
Registry (RIR)ARIN
HandleAS402584
RangeAS402584
Registered01 Jun 2026
Last changed01 Jun 2026
Abuse contact[email protected]
3IPv4 prefixes
0IPv6 prefixes
1Upstreams
0Downstreams
Upstreams
| AS | Network name | Visibility |
|---|---|---|
| AS14041 | AS-FRGP - University Corporation for Atmospheric Research | 227 |
Downstreams
None seen.
IPv4 prefixes (3)
RPKI-validate all prefixes of AS402584
Contacts
| Role | Name | Handle | Email / phone | Address |
|---|---|---|---|---|
| registrant | Metropolitan State University of Denver | MSCD | Information Technology Services, Denver, CO, 80217-3362, United States | |
| technical | Mike Hart | HARTM150-ARIN | [email protected], +1-303-615-0541 | 1201 5th Street, Denver, CO, 80204, United States |
| technical | Network Operations Center | NOC1332-ARIN | [email protected], +1-303-352-7548 | Information Technology , Campus Box #96 P.O. Box 173362, Denver, CO, 80217-3362, United States |
| administrative | Amparo Garcia | GARCI1601-ARIN | [email protected], +1-303-615-0543 | 1201 5th Street, Campus Box 96, Denver, CO, 80204, United States |
| technical | Jesse Nguyen | NGUYE1473-ARIN | [email protected], +1-303-615-0934 | 1201 5th st, Denver, CO, 80204, United States |
| abuse | Abuse | ABUSE5139-ARIN | [email protected], +1-303-352-7548 | PO Box 173362, CB 96, Denver, CO, 80217-3362, United States |
Raw registry response
{
"endAutnum": 402584,
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-09-11T10:33:07-04:00"
},
{
"eventAction": "registration",
"eventDate": "2015-04-16T14:22:13-04:00"
}
],
"handle": "HARTM150-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/HARTM150-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/402584"
},
{
"href": "https://whois.arin.net/rest/poc/HARTM150-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/402584"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
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],
"status": [
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],
"vcardArray": [
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{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-09-11T09:37:47-04:00"
},
{
"eventAction": "registration",
"eventDate": "2003-08-06T09:53:19-04:00"
}
],
"handle": "NOC1332-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/NOC1332-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/402584"
},
{
"href": "https://whois.arin.net/rest/poc/NOC1332-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/402584"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
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],
"status": [
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],
"vcardArray": [
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[
[
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],
[
"adr",
{
"label": "Information Technology\r\nCampus Box #96 P.O. Box 173362\nDenver\nCO\n80217-3362\nUnited States"
},
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},
"text",
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]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-03-04T10:57:41-05:00"
},
{
"eventAction": "registration",
"eventDate": "2023-08-30T12:56:48-04:00"
}
],
"handle": "GARCI1601-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/GARCI1601-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/402584"
},
{
"href": "https://whois.arin.net/rest/poc/GARCI1601-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/402584"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"administrative"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "1201 5th Street\nCampus Box 96\nDenver\nCO\n80204\nUnited States"
},
"text",
[
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]
],
[
"fn",
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],
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]
],
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"kind",
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],
[
"email",
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],
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"tel",
{
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]
},
"text",
"+1-303-615-0543"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-10-21T13:58:21-04:00"
},
{
"eventAction": "registration",
"eventDate": "2026-10-21T13:58:21-04:00"
}
],
"handle": "NGUYE1473-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/NGUYE1473-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/402584"
},
{
"href": "https://whois.arin.net/rest/poc/NGUYE1473-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/402584"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
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],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
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"text",
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],
[
"adr",
{
"label": "1201 5th st\nDenver\nCO\n80204\nUnited States"
},
"text",
[
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]
],
[
"fn",
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"text",
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],
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[
"email",
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"text",
"[email protected]"
],
[
"tel",
{
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]
},
"text",
"+1-303-615-0934"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-09-11T09:38:12-04:00"
},
{
"eventAction": "registration",
"eventDate": "2015-06-12T16:35:47-04:00"
}
],
"handle": "ABUSE5139-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/ABUSE5139-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/402584"
},
{
"href": "https://whois.arin.net/rest/poc/ABUSE5139-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/402584"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"abuse"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "PO Box 173362, CB 96\nDenver\nCO\n80217-3362\nUnited States"
},
"text",
[
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""
]
],
[
"fn",
[],
"text",
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],
[
"org",
[],
"text",
"MSU Denver"
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
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]
},
"text",
"+1-303-352-7548"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-10-21T13:59:25-04:00"
},
{
"eventAction": "registration",
"eventDate": "1991-04-16T00:00:00-04:00"
}
],
"handle": "MSCD",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/MSCD",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/402584"
},
{
"href": "https://whois.arin.net/rest/org/MSCD",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/402584"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"fn",
[],
"text",
"Metropolitan State University of Denver"
],
[
"adr",
{
"label": "Information Technology Services\nDenver\nCO\n80217-3362\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
[],
"text",
"org"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-06-01T08:44:40-04:00"
},
{
"eventAction": "registration",
"eventDate": "2026-06-01T08:44:40-04:00"
}
],
"handle": "AS402584",
"links": [
{
"href": "https://rdap.arin.net/registry/autnum/402584",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/402584"
},
{
"href": "https://whois.arin.net/rest/asn/AS402584",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/402584"
}
],
"name": "MSUDENVER",
"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/402584"
}
],
"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/402584"
}
],
"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": 402584,
"status": [
"active"
]
}Results come from public internet registries and live global routing data. Results are cached for up to an hour. Lookups are logged with your IP address to prevent abuse — see our Privacy Policy.