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	Prefix	Description
	129.19.0.0/16	Colorado State University
	130.253.0.0/16	University of Denver
	147.153.0.0/16	Metropolitan State University of Denver
	161.98.0.0/16	City of Boulder
	192.43.217.0/24	National Center for Atmospheric Research
	198.59.2.0/24	Auraria Higher Education Center
	2001:468:500::/48	National Center for Atmospheric Research

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS1299	Arelion (fka. Telia Carrier)	✔	✔
	AS3356	Lumen (Level 3)	✔	✔
	AS393552	Longmont Power & Communications	✔	✘

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Peers

	ASN	Description	IPv4	IPv6
	AS1299	Arelion (fka. Telia Carrier)	✔	✔
	AS11956	National Oceanic and Atmospheric Administration	✔	✔
	AS6939	Hurricane Electric LLC	✔	✔
	AS104	University of Colorado at Boulder	✔	✔
	AS17207	Colorado College	✔	✘
	AS3356	Lumen (Level 3)	✔	✔
	AS11164	Internet2 I2PX	✔	✔
	AS194	University Corporation for Atmospheric Research	✔	✔
	AS12145	Colorado State University	✔	✘
	AS36081	State of Colorado General Government Computer	✔	✘
	AS2902	University of Wyoming	✔	✘
	AS16519	University of Colorado Denver	✔	✔
	AS26661	Jeffco Public Schools	✔	✘
	AS62671	ECS-Infrastructure	✔	✘
	AS36704	Colorado School of Mines	✔	✘
	AS36691	Colorado State University	✔	✘
	AS65	Air Force Systems Networking	✔	✘
	AS14977	State of Wyoming Department A&I	✔	✔
	AS11537	Internet2	✔	✔
	AS39990	Boulder County Government	✔	✘
	AS396425	University of Colorado, Colorado Springs	✔	✘
	AS393552	Longmont Power & Communications	✔	✘
	AS397315	Region 10 League for Economic Assistance and Planning, Inc.	✔	✘
	AS401317	Boulder Public Library District	✔	✘
	AS11232	Midcontinent Communications	✔	✔
	AS399193	Navajotech	✔	✘
	AS15295	University of Northern Colorado	✔	✘
	AS30136	Adams 12	✔	✘
	AS393869	COLORADO MOUNTAIN COLLEGE	✔	✔
	AS1828	Unitas Global	✔	✔
	AS11686	Education Networks of America	✔	✔
	AS62642	Bigleaf Networks, Inc.	✔	✘
	AS11071	InfoWest	✔	✘
	AS293	ESnet	✔	✔
	AS53597	Hoyos Consulting LLC	✔	✔
	AS10242	US Internet Corp	✔	✔
	AS32621	Twin City VoIP, Inc.	✔	✔
	AS62887	WhiteSky Communications, LLC.	✔	✘
	AS15169	Google LLC	✔	✔
	AS36236	NetActuate, Inc	✔	✘
	AS2153	CENIC	✔	✘
	AS2734	CoreSite	✔	✔
	AS19281	Quad9	✔	✔
	AS396212	Aims Community College	✔	✘
	AS2152	CENIC - CalREN	✔	✘

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Downstreams

	ASN	Description	IPv4	IPv6
	AS11956	National Oceanic and Atmospheric Administration	✔	✔
	AS104	University of Colorado at Boulder	✔	✔
	AS17207	Colorado College	✔	✘
	AS194	University Corporation for Atmospheric Research	✔	✔
	AS12145	Colorado State University	✔	✘
	AS36081	State of Colorado General Government Computer	✔	✘
	AS2902	University of Wyoming	✔	✘
	AS26661	Jeffco Public Schools	✔	✘
	AS62671	ECS-Infrastructure	✔	✘
	AS16519	University of Colorado Denver	✔	✔
	AS36691	Colorado State University	✔	✘
	AS65	Air Force Systems Networking	✔	✘
	AS36704	Colorado School of Mines	✔	✘
	AS14977	State of Wyoming Department A&I	✔	✔
	AS397315	Region 10 League for Economic Assistance and Planning, Inc.	✔	✘
	AS396425	University of Colorado, Colorado Springs	✔	✘
	AS401317	Boulder Public Library District	✔	✘
	AS399193	Navajotech	✔	✘
	AS30136	Adams 12	✔	✘
	AS393869	COLORADO MOUNTAIN COLLEGE	✔	✔
	AS15295	University of Northern Colorado	✔	✘
	AS39990	Boulder County Government	✔	✘
	AS11686	Education Networks of America	✔	✔
	AS19281	Quad9	✔	✘

ASHandle:       AS14041
OrgID:          UCAR-1
ASName:         AS14041
ASNumber:       14041
RegDate:        1999-10-07
Updated:        2012-03-02
Source:         ARIN



OrgID:          UCAR-1
OrgName:        University Corporation for Atmospheric Research
CanAllocate:    
Street:         1850 Table Mesa Drive
City:           Boulder
State/Prov:     CO
Country:        US
PostalCode:     80305
RegDate:        1988-05-26
Updated:        2024-01-12
OrgAdminHandle: MEEHL5-ARIN
OrgTechHandle:  ADLER49-ARIN
OrgTechHandle:  HERNA1265-ARIN
OrgTechHandle:  HSIAA-ARIN
OrgAbuseHandle: ABUSE18-ARIN
OrgNOCHandle:   ZN10-ARIN
Source:         ARIN





OrgAdminHandle:       MEEHL5-ARIN
OrgAdminName:         Marla Meehl
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        ADLER49-ARIN
OrgTechName:          Matt Adler
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        HERNA1265-ARIN
OrgTechName:          John Hernandez
# Email removed, Log into bgp.tools to see whois emails


OrgTechHandle:        HSIAA-ARIN
OrgTechName:          Alex Hsia
# Email removed, Log into bgp.tools to see whois emails


OrgAbuseHandle:       ABUSE18-ARIN
OrgAbuseName:          Abuse
# Email removed, Log into bgp.tools to see whois emails


OrgNOCHandle:         ZN10-ARIN
OrgNOCName:            National Center for Atmospheric Research
# Email removed, Log into bgp.tools to see whois emails

Last Update: 2025-04-16T03:30:59Z UTC

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Member of the following AS-SETs

-	Member	ASN Count
LEVEL3	as-as209-cust	1818
LEVEL3	as-level3-customers-na	0
RADB	as-calren2	275
RADB	as-calrendc	305
RADB	as-frgp	56
RADB	as-comcast-edia	2783
LEVEL3	as-level3-origins-na	0