ASN AS31835 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS31835?

AS31835 is listed under Contour Networks.

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?

The page shows a preview of large ASN datasets. Use the page controls to load more rows, and upgrade to a paid plan for complete access.

AS31835 Contour Networks | IPGeolocation.io

ASN Lookup Tool

Contour Networks contournetworks.com

US 9 Routes

AS Data

AS31835

AS31835 – Contour Networks

AS Number	31835
AS Name	CONTOUR-NETWORKS
Organization	Contour Networks(csct-1)
Country	US
Website	contournetworks.com
Number of IPv4 Routes	9
Number of IPv6 Routes	0
ASN type	ISP
Registry	ARIN
Date Allocated	2009-06-04

ASN Intelligence API for production workflows

Use ASN data for AS31835 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
74.115.152.0/21	AS31835	Contour Networks	Contour Networks	2048
66.239.111.0/24	AS31835	Contour Networks	Contour Networks	256
74.115.155.0/24	AS31835	Contour Networks	Contour Networks	256
74.115.156.0/24	AS31835	Contour Networks	Contour Networks	256
74.115.158.0/24	AS31835	Contour Networks	Contour Networks	256
209.49.92.0/22	AS31835	Contour Networks	Contour Networks	1024
74.115.152.0/22	AS31835	Contour Networks	Contour Networks	1024
74.115.157.0/24	AS31835	Contour Networks	Contour Networks	256
74.115.159.0/24	AS31835	Contour Networks	Contour Networks	256

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:       31835
ASName:         CONTOUR-NETWORKS
ASHandle:       AS31835
RegDate:        2009-06-04
Updated:        2012-03-02
Comment:        NETWO2480-ARIN    
Ref:            https://rdap.arin.net/registry/autnum/31835


OrgName:        Contour Networks
OrgId:          CSCT-1
Address:        61 Inverness Drive East
Address:        Suite 100
City:           Englewood
StateProv:      CO
PostalCode:     80112
Country:        US
RegDate:        2008-06-05
Updated:        2024-11-25
Ref:            https://rdap.arin.net/registry/entity/CSCT-1


OrgAbuseHandle: OBREY-ARIN
OrgAbuseName:   Obrey, Justice 
OrgAbusePhone:  +1-303-928-1594 
OrgAbuseEmail:  jobrey@contournetworks.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/OBREY-ARIN

OrgTechHandle: GDE55-ARIN
OrgTechName:   Deickman, Greg 
OrgTechPhone:  +1-303-708-9233 
OrgTechEmail:  gdeickman@contournetworks.com
OrgTechRef:    https://rdap.arin.net/registry/entity/GDE55-ARIN

OrgAbuseHandle: JPR103-ARIN
OrgAbuseName:   Prouty, Jason 
OrgAbusePhone:  +1-303-928-1588 
OrgAbuseEmail:  jprouty@contournetworks.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/JPR103-ARIN

OrgTechHandle: JPR103-ARIN
OrgTechName:   Prouty, Jason 
OrgTechPhone:  +1-303-928-1588 
OrgTechEmail:  jprouty@contournetworks.com
OrgTechRef:    https://rdap.arin.net/registry/entity/JPR103-ARIN

OrgAbuseHandle: GDE55-ARIN
OrgAbuseName:   Deickman, Greg 
OrgAbusePhone:  +1-303-708-9233 
OrgAbuseEmail:  gdeickman@contournetworks.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/GDE55-ARIN

OrgTechHandle: OBREY-ARIN
OrgTechName:   Obrey, Justice 
OrgTechPhone:  +1-303-928-1594 
OrgTechEmail:  jobrey@contournetworks.com
OrgTechRef:    https://rdap.arin.net/registry/entity/OBREY-ARIN

OrgNOCHandle: JPR103-ARIN
OrgNOCName:   Prouty, Jason 
OrgNOCPhone:  +1-303-928-1588 
OrgNOCEmail:  jprouty@contournetworks.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/JPR103-ARIN

OrgNOCHandle: OBREY-ARIN
OrgNOCName:   Obrey, Justice 
OrgNOCPhone:  +1-303-928-1594 
OrgNOCEmail:  jobrey@contournetworks.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/OBREY-ARIN

OrgDNSHandle: JPR103-ARIN
OrgDNSName:   Prouty, Jason 
OrgDNSPhone:  +1-303-928-1588 
OrgDNSEmail:  jprouty@contournetworks.com
OrgDNSRef:    https://rdap.arin.net/registry/entity/JPR103-ARIN

RAbuseHandle: NETWO2480-ARIN
RAbuseName:   Network Administrator
RAbusePhone:  +1-404-347-8370 
RAbuseEmail:  sysadmin@contournetworks.com
RAbuseRef:    https://rdap.arin.net/registry/entity/NETWO2480-ARIN

RTechHandle: NETWO2480-ARIN
RTechName:   Network Administrator
RTechPhone:  +1-404-347-8370 
RTechEmail:  sysadmin@contournetworks.com
RTechRef:    https://rdap.arin.net/registry/entity/NETWO2480-ARIN

RNOCHandle: NETWO2480-ARIN
RNOCName:   Network Administrator
RNOCPhone:  +1-404-347-8370 
RNOCEmail:  sysadmin@contournetworks.com
RNOCRef:    https://rdap.arin.net/registry/entity/NETWO2480-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

Peers

AS Number	Description	Country
AS1239	Cogent Communications, LLC	US
AS701	Verizon Business/UUnet	US
AS174	Cogent Communications, LLC	US
AS701	Verizon Business	US

Upstreams

AS Number	Description	Country
AS174	Cogent Communications, LLC	US
AS701	Verizon Business	US