ASN AS11657 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS11657?

AS11657 is listed under Legg Mason & Co., 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?

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AS11657 Legg Mason & Co., LLC

ASN Lookup Tool

Legg Mason & Co., LLC frk.com

US 2 Routes

AS Data

AS11657

AS11657 – Legg Mason & Co., LLC

AS Number	11657
AS Name	LEGG-MASON-CORP-NET
Organization	Legg Mason & Co., LLC(lml14)
Country	US
Website	frk.com
Number of IPv4 Routes	2
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	1998-11-05

ASN Intelligence API for production workflows

Use ASN data for AS11657 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
216.251.210.0/24	AS11657	Legg Mason & Co., LLC	Legg Mason & Co., LLC	256
216.251.208.0/24	AS11657	Legg Mason & Co., LLC	Legg Mason & Co., LLC	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:       11657
ASName:         LEGG-MASON-CORP-NET
ASHandle:       AS11657
RegDate:        1998-11-05
Updated:        2023-02-10    
Ref:            https://rdap.arin.net/registry/autnum/11657


OrgName:        Legg Mason & Co., LLC
OrgId:          LML14
Address:        100 International Drive
City:           Baltimore
StateProv:      MD
PostalCode:     21202
Country:        US
RegDate:        2010-07-16
Updated:        2024-09-23
Ref:            https://rdap.arin.net/registry/entity/LML14


OrgTechHandle: GALVA74-ARIN
OrgTechName:   Galvan, Richard 
OrgTechPhone:  +1-916-463-6057 
OrgTechEmail:  rgalvan@frk.com
OrgTechRef:    https://rdap.arin.net/registry/entity/GALVA74-ARIN

OrgNOCHandle: FTTIP-ARIN
OrgNOCName:   FTT-IPAdmin
OrgNOCPhone:  +91-40-66971111  
OrgNOCEmail:  ipadmin@franklintempleton.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/FTTIP-ARIN

OrgDNSHandle: FTTIP-ARIN
OrgDNSName:   FTT-IPAdmin
OrgDNSPhone:  +91-40-66971111  
OrgDNSEmail:  ipadmin@franklintempleton.com
OrgDNSRef:    https://rdap.arin.net/registry/entity/FTTIP-ARIN

OrgTechHandle: FTTIP-ARIN
OrgTechName:   FTT-IPAdmin
OrgTechPhone:  +91-40-66971111  
OrgTechEmail:  ipadmin@franklintempleton.com
OrgTechRef:    https://rdap.arin.net/registry/entity/FTTIP-ARIN

OrgAbuseHandle: FTTIP-ARIN
OrgAbuseName:   FTT-IPAdmin
OrgAbusePhone:  +91-40-66971111  
OrgAbuseEmail:  ipadmin@franklintempleton.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/FTTIP-ARIN

OrgRoutingHandle: FTTIP-ARIN
OrgRoutingName:   FTT-IPAdmin
OrgRoutingPhone:  +91-40-66971111  
OrgRoutingEmail:  ipadmin@franklintempleton.com
OrgRoutingRef:    https://rdap.arin.net/registry/entity/FTTIP-ARIN

RNOCHandle: FTTIP-ARIN
RNOCName:   FTT-IPAdmin
RNOCPhone:  +91-40-66971111  
RNOCEmail:  ipadmin@franklintempleton.com
RNOCRef:    https://rdap.arin.net/registry/entity/FTTIP-ARIN

RTechHandle: FTTIP-ARIN
RTechName:   FTT-IPAdmin
RTechPhone:  +91-40-66971111  
RTechEmail:  ipadmin@franklintempleton.com
RTechRef:    https://rdap.arin.net/registry/entity/FTTIP-ARIN

RAbuseHandle: FTTIP-ARIN
RAbuseName:   FTT-IPAdmin
RAbusePhone:  +91-40-66971111  
RAbuseEmail:  ipadmin@franklintempleton.com
RAbuseRef:    https://rdap.arin.net/registry/entity/FTTIP-ARIN

RTechHandle: BARTK2-ARIN
RTechName:   Bartkowiak, Krzysztof 
RTechPhone:  +48 616679031 
RTechEmail:  kbartko@frk.com
RTechRef:    https://rdap.arin.net/registry/entity/BARTK2-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
AS13335	Cloudflare, Inc.	US

Upstreams

AS Number	Description	Country
AS13335	Cloudflare, Inc.	US