ASN Lookup Tool

Customized Energy Solutions, Ltd. ces-ltd.com US US 1 Routes

AS Data

AS21672

AS21672 – Customized Energy Solutions, Ltd.

AS Number 21672
AS Name CES-HQPA-01
Organization Customized Energy Solutions, Ltd.(cesl-3)
Country US
Website ces-ltd.com
Number of IPv4 Routes 1
Number of IPv6 Routes 0
ASN type BUSINESS
Registry ARIN
Date Allocated 2011-09-12

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Use ASN data for AS21672 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route # IPs
204.77.153.0/24 256

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:       21672
ASName:         CES-HQPA-01
ASHandle:       AS21672
RegDate:        2011-09-12
Updated:        2012-03-02
Comment:        24-hour Staffed Operations Center    
Ref:            https://rdap.arin.net/registry/autnum/21672


OrgName:        Customized Energy Solutions, Ltd.
OrgId:          CESL-3
Address:        1528 Walnut St.
Address:        22nd Floor
City:           Philadelphia
StateProv:      PA
PostalCode:     19102
Country:        US
RegDate:        2011-08-18
Updated:        2011-08-18
Comment:        24-hour Staffed Operations Center
Ref:            https://rdap.arin.net/registry/entity/CESL-3


OrgNOCHandle: CAA15-ARIN
OrgNOCName:   CES ARIN Administrator
OrgNOCPhone:  +1-267-331-4352 
OrgNOCEmail:  is.tech@ces-ltd.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/CAA15-ARIN

OrgTechHandle: CAA15-ARIN
OrgTechName:   CES ARIN Administrator
OrgTechPhone:  +1-267-331-4352 
OrgTechEmail:  is.tech@ces-ltd.com
OrgTechRef:    https://rdap.arin.net/registry/entity/CAA15-ARIN

OrgAbuseHandle: CAA15-ARIN
OrgAbuseName:   CES ARIN Administrator
OrgAbusePhone:  +1-267-331-4352 
OrgAbuseEmail:  is.tech@ces-ltd.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/CAA15-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
AS7018 AT&T Enterprises, LLC US
AS33287 Comcast Cable Communications, LLC US
AS33659 Comcast Cable Communications, LLC US

Upstreams

AS Number Description Country
AS7018 AT&T Enterprises, LLC US
AS33287 Comcast Cable Communications, LLC US
AS33659 Comcast Cable Communications, LLC US

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Frequently Asked Questions

ASN AS21672 is an Autonomous System Number used to identify a network for BGP internet routing.
AS21672 is listed under Customized Energy Solutions, Ltd..
Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.
Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.
WHOIS provides registration and contact context for ASN ownership, administration, and operational reference.
This page previews large ASN datasets. Use See more to load additional rows, and upgrade your plan to view complete peer, route, upstream, and downstream data.