ASN AS16657 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS16657?

AS16657 is listed under Crown Castle Fiber LLC.

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.

AS16657 Crown Castle Fiber LLC

ASN Lookup Tool

Crown Castle Fiber LLC crowncastle.com

US 4 Routes

AS Data

AS16657

AS16657 – Crown Castle Fiber LLC

AS Number	16657
AS Name	CROWNCASTLE-AS16657
Organization	Crown Castle Fiber LLC(ccfl-10)
Country	US
Website	crowncastle.com
Number of IPv4 Routes	4
Number of IPv6 Routes	0
ASN type	ISP
Registry	ARIN
Date Allocated	2005-06-29

ASN Intelligence API for production workflows

Use ASN data for AS16657 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

Access complete peers, upstreams, downstreams, routes, WHOIS, and contact intelligence via our API. Learn more

Get ASN API Key ASN API Docs

IP Ranges

Route	Origin	Origin Name	ISP	# IPs
151.181.68.0/22	AS46887	Crown Castle Fiber LLC	Sasco Capital	1024
151.181.36.0/24	AS16657	Crown Castle Fiber LLC	Fibertech Networks Speedtest Server	256
208.69.87.0/24	AS16657	Crown Castle Fiber LLC	Fibertech Networks	256
151.181.32.0/24	AS16657	Crown Castle Fiber LLC	Hot Site Data Center	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:       16657
ASName:         CROWNCASTLE-AS16657
ASHandle:       AS16657
RegDate:        2005-06-29
Updated:        2024-02-29    
Ref:            https://rdap.arin.net/registry/autnum/16657


OrgName:        Crown Castle Fiber LLC
OrgId:          CCFL-10
Address:        8020 Katy Freeway
City:           Houston
StateProv:      TX
PostalCode:     77024
Country:        US
RegDate:        2023-07-12
Updated:        2026-02-19
Comment:        https://www.crowncastle.com/
Ref:            https://rdap.arin.net/registry/entity/CCFL-10


OrgTechHandle: CCIA3-ARIN
OrgTechName:   Crown Castle IP Admin
OrgTechPhone:  +1-855-933-4237 
OrgTechEmail:  ipadmin@crowncastle.com
OrgTechRef:    https://rdap.arin.net/registry/entity/CCIA3-ARIN

OrgNOCHandle: CCNOC3-ARIN
OrgNOCName:   Crown Castle Network Operations Center
OrgNOCPhone:  +1-855-933-4237 
OrgNOCEmail:  fibersupport@crowncastle.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/CCNOC3-ARIN

OrgAbuseHandle: CCAR-ARIN
OrgAbuseName:   Crown Castle Abuse Reports
OrgAbusePhone:  +1-855-933-4237 
OrgAbuseEmail:  abuse@crowncastle.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/CCAR-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
AS46887	Crown Castle Fiber LLC	US

Upstreams

AS Number	Description	Country
AS46887	Crown Castle Fiber LLC	US

Contacts

Email Contacts

ipadmin@crowncastle.com

Abuse Contacts

abuse@crowncastle.com