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Look up an Autonomous System — holder, registry, contacts, announced IPv4/IPv6 prefixes, upstreams and downstreams.
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AS17207
COLOR-COLL - Colorado College Announcing routesAS nameCOLOR-COLL
OrganisationColorado College
Registry (RIR)ARIN
HandleAS17207
RangeAS17207
Registered04 Aug 2000
Last changed02 Mar 2012
Abuse contact[email protected]
11IPv4 prefixes
0IPv6 prefixes
1Upstreams
0Downstreams
Upstreams
| AS | Network name | Visibility |
|---|---|---|
| AS14041 | AS-FRGP - University Corporation for Atmospheric Research | 228 |
Downstreams
None seen.
IPv4 prefixes (11)
RPKI-validate all prefixes of AS17207
Contacts
| Role | Name | Handle | Email / phone | Address |
|---|---|---|---|---|
| registrant | Colorado College | COLORA | 14 East Cache La Poudre, Colorado Springs, CO, 80903, United States | |
| abuse, noc, administrative, technical | David Ziemba | ZIEMB-ARIN | [email protected], +1-719-389-6063 | ITS, Colorado College , 14 E Cache La Poudre, Colorado Springs, CO, 80903, United States |
| technical, noc, abuse | David Ziemba | ZIEMB-ARIN | [email protected], +1-719-389-6063 | ITS, Colorado College , 14 E Cache La Poudre, Colorado Springs, CO, 80903, United States |
Raw registry response
{
"endAutnum": 17207,
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-07-18T10:35:34-04:00"
},
{
"eventAction": "registration",
"eventDate": "2011-12-08T18:06:51-05:00"
}
],
"handle": "ZIEMB-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/ZIEMB-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/17207"
},
{
"href": "https://whois.arin.net/rest/poc/ZIEMB-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/17207"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"abuse",
"noc",
"administrative",
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "ITS, Colorado College\r\n14 E Cache La Poudre\nColorado Springs\nCO\n80903\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"David Ziemba"
],
[
"n",
[],
"text",
[
"Ziemba",
"David",
"",
"",
""
]
],
[
"kind",
[],
"text",
"individual"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-719-389-6063"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2011-12-13T16:38:19-05:00"
},
{
"eventAction": "registration",
"eventDate": "1990-04-19T00:00:00-04:00"
}
],
"handle": "COLORA",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/COLORA",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/17207"
},
{
"href": "https://whois.arin.net/rest/org/COLORA",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/17207"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"fn",
[],
"text",
"Colorado College"
],
[
"adr",
{
"label": "14 East Cache La Poudre\nColorado Springs\nCO\n80903\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
[],
"text",
"org"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-07-18T10:35:34-04:00"
},
{
"eventAction": "registration",
"eventDate": "2011-12-08T18:06:51-05:00"
}
],
"handle": "ZIEMB-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/ZIEMB-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/17207"
},
{
"href": "https://whois.arin.net/rest/poc/ZIEMB-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/17207"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"technical",
"noc",
"abuse"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "ITS, Colorado College\r\n14 E Cache La Poudre\nColorado Springs\nCO\n80903\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"David Ziemba"
],
[
"n",
[],
"text",
[
"Ziemba",
"David",
"",
"",
""
]
],
[
"kind",
[],
"text",
"individual"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-719-389-6063"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2012-03-02T08:03:18-05:00"
},
{
"eventAction": "registration",
"eventDate": "2000-08-04T00:00:00-04:00"
}
],
"handle": "AS17207",
"links": [
{
"href": "https://rdap.arin.net/registry/autnum/17207",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/17207"
},
{
"href": "https://whois.arin.net/rest/asn/AS17207",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/17207"
}
],
"name": "COLOR-COLL",
"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/17207"
}
],
"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/17207"
}
],
"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": 17207,
"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.