ASN AS26661 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS26661?

AS26661 is listed under Jeffco Public Schools.

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.

AS26661 Jeffco Public Schools

ASN Lookup Tool

Jeffco Public Schools jeffco.k12.co.us

US 3 Routes

AS Data

AS26661

AS26661 – Jeffco Public Schools

AS Number	26661
AS Name	JCPS-ASN
Organization	Jeffco Public Schools(jcps-1)
Country	US
Website	jeffco.k12.co.us
Number of IPv4 Routes	3
Number of IPv6 Routes	0
ASN type	GOVERNMENT
Registry	ARIN
Date Allocated	2011-02-14

ASN Intelligence API for production workflows

Use ASN data for AS26661 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
199.96.184.0/22	AS26661	Jeffco Public Schools	Jeffco Public Schools	1024
199.96.184.0/21	AS26661	Jeffco Public Schools	Jeffco Public Schools	2048
199.96.188.0/22	AS26661	Jeffco Public Schools	Jeffco Public Schools	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:       26661
ASName:         JCPS-ASN
ASHandle:       AS26661
RegDate:        2011-02-14
Updated:        2012-02-24    
Ref:            https://rdap.arin.net/registry/autnum/26661


OrgName:        Jeffco Public Schools
OrgId:          JCPS-1
Address:        1829 Denver West Drive
Address:        Building 27
City:           Golden
StateProv:      CO
PostalCode:     80401
Country:        US
RegDate:        1998-11-20
Updated:        2011-02-10
Ref:            https://rdap.arin.net/registry/entity/JCPS-1


OrgAbuseHandle: JCPSA1-ARIN
OrgAbuseName:   JCPS Abuse
OrgAbusePhone:  +1-303-982-6500 
OrgAbuseEmail:  abuse@jeffco.k12.co.us
OrgAbuseRef:    https://rdap.arin.net/registry/entity/JCPSA1-ARIN

OrgTechHandle: JCPST-ARIN
OrgTechName:   JCPS Tech
OrgTechPhone:  +1-303-982-6500 
OrgTechEmail:  tech@jeffco.k12.co.us
OrgTechRef:    https://rdap.arin.net/registry/entity/JCPST-ARIN

RTechHandle: JCPST-ARIN
RTechName:   JCPS Tech
RTechPhone:  +1-303-982-6500 
RTechEmail:  tech@jeffco.k12.co.us
RTechRef:    https://rdap.arin.net/registry/entity/JCPST-ARIN

RAbuseHandle: JCPST-ARIN
RAbuseName:   JCPS Tech
RAbusePhone:  +1-303-982-6500 
RAbuseEmail:  tech@jeffco.k12.co.us
RAbuseRef:    https://rdap.arin.net/registry/entity/JCPST-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
AS14041	University Corporation for Atmospheric Research	US

Upstreams

AS Number	Description	Country
AS14041	University Corporation for Atmospheric Research	US

Contacts

Email Contacts

tech@jeffco.k12.co.us

Abuse Contacts

abuse@jeffco.k12.co.us