ASN AS13508 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS13508?

AS13508 is listed under Baker Bros. Advisors, 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.

AS13508 Baker Bros. Advisors, LLC

ASN Lookup Tool

Baker Bros. Advisors, LLC rfa.com

US 1 Routes

AS Data

AS13508

AS13508 – Baker Bros. Advisors, LLC

AS Number	13508
AS Name	BAKER-BROTHERS
Organization	Baker Bros. Advisors, LLC(bbal)
Country	US
Website	rfa.com
Number of IPv4 Routes	1
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2006-11-01

ASN Intelligence API for production workflows

Use ASN data for AS13508 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
63.116.181.0/24	AS13508	Baker Bros. Advisors, LLC	BAKERS BROTHER INVESTMENTS	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:       13508
ASName:         BAKER-BROTHERS
ASHandle:       AS13508
RegDate:        2006-11-01
Updated:        2012-02-24    
Ref:            https://rdap.arin.net/registry/autnum/13508


OrgName:        Baker Bros. Advisors, LLC
OrgId:          BBAL
Address:        667 Madison Avenue
Address:        17th Floor
City:           New York
StateProv:      NY
PostalCode:     10021
Country:        US
RegDate:        2006-10-30
Updated:        2006-10-30
Ref:            https://rdap.arin.net/registry/entity/BBAL


OrgTechHandle: RNOC-ARIN
OrgTechName:   RFA Network Operations Center
OrgTechPhone:  +1-212-867-4600 
OrgTechEmail:  arin@rfa.com
OrgTechRef:    https://rdap.arin.net/registry/entity/RNOC-ARIN

OrgAbuseHandle: RNOC-ARIN
OrgAbuseName:   RFA Network Operations Center
OrgAbusePhone:  +1-212-867-4600 
OrgAbuseEmail:  arin@rfa.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/RNOC-ARIN

OrgNOCHandle: RNOC-ARIN
OrgNOCName:   RFA Network Operations Center
OrgNOCPhone:  +1-212-867-4600 
OrgNOCEmail:  arin@rfa.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/RNOC-ARIN

RNOCHandle: RNOC-ARIN
RNOCName:   RFA Network Operations Center
RNOCPhone:  +1-212-867-4600 
RNOCEmail:  arin@rfa.com
RNOCRef:    https://rdap.arin.net/registry/entity/RNOC-ARIN

RTechHandle: RNOC-ARIN
RTechName:   RFA Network Operations Center
RTechPhone:  +1-212-867-4600 
RTechEmail:  arin@rfa.com
RTechRef:    https://rdap.arin.net/registry/entity/RNOC-ARIN

RAbuseHandle: RNOC-ARIN
RAbuseName:   RFA Network Operations Center
RAbusePhone:  +1-212-867-4600 
RAbuseEmail:  arin@rfa.com
RAbuseRef:    https://rdap.arin.net/registry/entity/RNOC-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
AS701	Verizon Business/UUnet	US
AS701	Verizon Business	US

Upstreams

AS Number	Description	Country
AS701	Verizon Business	US