ASN AS16519 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS16519?

AS16519 is listed under University of Colorado Denver.

What do peers, upstreams, and downstreams mean in ASN data?

Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.

What are routes and IP ranges for an ASN?

Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.

Why is WHOIS data shown for an ASN?

WHOIS data provides registration and contact context for ASN ownership, administration, and operational reference.

How can I access the full ASN tables?

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AS16519 University of Colorado Denver

ASN Lookup Tool

University of Colorado Denver cuanschutz.edu

US 3 Routes

AS Data

AS16519

AS16519 – University of Colorado Denver

AS Number	16519
AS Name	CUDENVER
Organization	University of Colorado Denver (ucad-1)
Country	US
Website	cuanschutz.edu
Number of IPv4 Routes	2
Number of IPv6 Routes	1
ASN type	EDUCATION
Registry	ARIN
Date Allocated	2000-05-05

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Use ASN data for AS16519 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
140.226.0.0/16	AS16519	University of Colorado Denver	University of Colorado Denver	65536
132.194.0.0/16	AS16519	University of Colorado Denver	University of Colorado Denver	65536
2620:123:5000::/40	AS16519	University of Colorado Denver	University of Colorado Denver	~309×10²⁴

Raw Whois Response

#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#


ASNumber:       16519
ASName:         CUDENVER
ASHandle:       AS16519
RegDate:        2000-05-05
Updated:        2026-01-07
Ref:            https://rdap.arin.net/registry/autnum/16519


OrgName:        University of Colorado Denver
OrgId:          UCAD-1
Address:        1945 N. Wheeling St
City:           Aurora
StateProv:      CO
PostalCode:     80045
Country:        US
RegDate:        2000-05-05
Updated:        2024-09-25
Ref:            https://rdap.arin.net/registry/entity/UCAD-1


OrgAbuseHandle: ARTWI-ARIN
OrgAbuseName:   Artwich, Piotr 
OrgAbusePhone:  +1-303-724-7878 
OrgAbuseEmail:  piotr.artwich@cuanschutz.edu
OrgAbuseRef:    https://rdap.arin.net/registry/entity/ARTWI-ARIN

OrgTechHandle: ARTWI-ARIN
OrgTechName:   Artwich, Piotr 
OrgTechPhone:  +1-303-724-7878 
OrgTechEmail:  piotr.artwich@cuanschutz.edu
OrgTechRef:    https://rdap.arin.net/registry/entity/ARTWI-ARIN

OrgNOCHandle: ARTWI-ARIN
OrgNOCName:   Artwich, Piotr 
OrgNOCPhone:  +1-303-724-7878 
OrgNOCEmail:  piotr.artwich@cuanschutz.edu
OrgNOCRef:    https://rdap.arin.net/registry/entity/ARTWI-ARIN

OrgNOCHandle: LINDG32-ARIN
OrgNOCName:   Lindgren, Mattias 
OrgNOCPhone:  +1-303-724-0010 
OrgNOCEmail:  mattias.lindgren@cuanschutz.edu
OrgNOCRef:    https://rdap.arin.net/registry/entity/LINDG32-ARIN

OrgRoutingHandle: LINDG32-ARIN
OrgRoutingName:   Lindgren, Mattias 
OrgRoutingPhone:  +1-303-724-0010 
OrgRoutingEmail:  mattias.lindgren@cuanschutz.edu
OrgRoutingRef:    https://rdap.arin.net/registry/entity/LINDG32-ARIN

OrgTechHandle: LINDG32-ARIN
OrgTechName:   Lindgren, Mattias 
OrgTechPhone:  +1-303-724-0010 
OrgTechEmail:  mattias.lindgren@cuanschutz.edu
OrgTechRef:    https://rdap.arin.net/registry/entity/LINDG32-ARIN

OrgRoutingHandle: ARTWI-ARIN
OrgRoutingName:   Artwich, Piotr 
OrgRoutingPhone:  +1-303-724-7878 
OrgRoutingEmail:  piotr.artwich@cuanschutz.edu
OrgRoutingRef:    https://rdap.arin.net/registry/entity/ARTWI-ARIN

OrgAbuseHandle: LINDG32-ARIN
OrgAbuseName:   Lindgren, Mattias 
OrgAbusePhone:  +1-303-724-0010 
OrgAbuseEmail:  mattias.lindgren@cuanschutz.edu
OrgAbuseRef:    https://rdap.arin.net/registry/entity/LINDG32-ARIN

RNOCHandle: LINDG32-ARIN
RNOCName:   Lindgren, Mattias 
RNOCPhone:  +1-303-724-0010 
RNOCEmail:  mattias.lindgren@cuanschutz.edu
RNOCRef:    https://rdap.arin.net/registry/entity/LINDG32-ARIN

RAbuseHandle: LINDG32-ARIN
RAbuseName:   Lindgren, Mattias 
RAbusePhone:  +1-303-724-0010 
RAbuseEmail:  mattias.lindgren@cuanschutz.edu
RAbuseRef:    https://rdap.arin.net/registry/entity/LINDG32-ARIN

RTechHandle: LINDG32-ARIN
RTechName:   Lindgren, Mattias 
RTechPhone:  +1-303-724-0010 
RTechEmail:  mattias.lindgren@cuanschutz.edu
RTechRef:    https://rdap.arin.net/registry/entity/LINDG32-ARIN


#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#

Parsed Whois Response

{
  "status" : true,
  "whois_server" : "whois.arin.net",
  "aut_nums" : [ {
    "aut_num" : "16519",
    "as_handle" : "AS16519",
    "as_name" : "CUDENVER",
    "tech_contacts" : [ "ARTWI-ARIN", "LINDG32-ARIN", "LINDG32-ARIN", "ARTWI-ARIN", "LINDG32-ARIN" ],
    "abuse_contacts" : [ "ARTWI-ARIN", "LINDG32-ARIN", "LINDG32-ARIN" ],
    "date_created" : "2000-05-05",
    "date_updated" : "2026-01-07",
    "source" : "https://rdap.arin.net/registry/autnum/16519"
  } ],
  "organization" : {
    "handle" : "UCAD-1",
    "name" : "University of Colorado Denver",
    "address" : [ "1945 N. Wheeling St", "Aurora", "CO", "80045", "US" ],
    "street" : "N. Wheeling St",
    "city" : "Aurora",
    "state" : "CO",
    "zip_code" : "80045",
    "country" : [ "US" ],
    "date_created" : "2000-05-05",
    "date_updated" : "2024-09-25",
    "source" : "https://rdap.arin.net/registry/entity/UCAD-1",
    "addressCountry" : "US"
  },
  "technical_contacts" : [ {
    "handle" : "ARTWI-ARIN",
    "name" : "Artwich, Piotr",
    "email" : [ "piotr.artwich@cuanschutz.edu" ],
    "phone" : [ "+1-303-724-7878" ],
    "source" : "https://rdap.arin.net/registry/entity/ARTWI-ARIN"
  }, {
    "handle" : "LINDG32-ARIN",
    "name" : "Lindgren, Mattias",
    "email" : [ "mattias.lindgren@cuanschutz.edu" ],
    "phone" : [ "+1-303-724-0010" ],
    "source" : "https://rdap.arin.net/registry/entity/LINDG32-ARIN"
  } ],
  "abuse_contacts" : [ {
    "handle" : "ARTWI-ARIN",
    "name" : "Artwich, Piotr",
    "email" : [ "piotr.artwich@cuanschutz.edu" ],
    "phone" : [ "+1-303-724-7878" ],
    "source" : "https://rdap.arin.net/registry/entity/ARTWI-ARIN"
  }, {
    "handle" : "LINDG32-ARIN",
    "name" : "Lindgren, Mattias",
    "email" : [ "mattias.lindgren@cuanschutz.edu" ],
    "phone" : [ "+1-303-724-0010" ],
    "source" : "https://rdap.arin.net/registry/entity/LINDG32-ARIN"
  } ]
}

Peers

AS Number	Description	Country
AS14041	University Corporation for Atmospheric Research	US
AS3356	Level 3 Parent, LLC	US

Upstreams

AS Number	Description	Country
AS14041	University Corporation for Atmospheric Research	US
AS3356	Level 3 Parent, LLC	US