ASN AS29905 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS29905?

AS29905 is listed under Bain Capital, LP.

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.

AS29905 Bain Capital, LP | IPGeolocation.io

ASN Lookup Tool

Bain Capital, LP baincapital.com

US 2 Routes

AS Data

AS29905

AS29905 – Bain Capital, LP

AS Number	29905
AS Name	BAIN-CAPITAL
Organization	Bain Capital, LP(bcl-65)
Country	US
Website	baincapital.com
Number of IPv4 Routes	2
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2003-06-04

ASN Intelligence API for production workflows

Use ASN data for AS29905 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
144.121.141.0/24	AS29905	Bain Capital, LP	Bain Capital, LLC	256
64.72.83.0/24	AS29905	Bain Capital, LP	Bain Capital	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:       29905
ASName:         BAIN-CAPITAL
ASHandle:       AS29905
RegDate:        2003-06-04
Updated:        2017-04-27    
Ref:            https://rdap.arin.net/registry/autnum/29905


OrgName:        Bain Capital, LP
OrgId:          BCL-65
Address:        200 Clarendon Street
City:           Boston
StateProv:      MA
PostalCode:     02116
Country:        US
RegDate:        2003-05-29
Updated:        2021-06-15
Ref:            https://rdap.arin.net/registry/entity/BCL-65


OrgTechHandle: FISHE304-ARIN
OrgTechName:   Fisher, Evan 
OrgTechPhone:  +1-617-516-2000 
OrgTechEmail:  efisher@baincapital.com
OrgTechRef:    https://rdap.arin.net/registry/entity/FISHE304-ARIN

OrgTechHandle: VITAA1-ARIN
OrgTechName:   Vita, Anthony 
OrgTechPhone:  +1-617-516-2349 
OrgTechEmail:  avita@baincapital.com
OrgTechRef:    https://rdap.arin.net/registry/entity/VITAA1-ARIN

OrgNOCHandle: FISHE304-ARIN
OrgNOCName:   Fisher, Evan 
OrgNOCPhone:  +1-617-516-2000 
OrgNOCEmail:  efisher@baincapital.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/FISHE304-ARIN

OrgAbuseHandle: FISHE304-ARIN
OrgAbuseName:   Fisher, Evan 
OrgAbusePhone:  +1-617-516-2000 
OrgAbuseEmail:  efisher@baincapital.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/FISHE304-ARIN

OrgAbuseHandle: VITAA1-ARIN
OrgAbuseName:   Vita, Anthony 
OrgAbusePhone:  +1-617-516-2349 
OrgAbuseEmail:  avita@baincapital.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/VITAA1-ARIN

OrgNOCHandle: VITAA1-ARIN
OrgNOCName:   Vita, Anthony 
OrgNOCPhone:  +1-617-516-2349 
OrgNOCEmail:  avita@baincapital.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/VITAA1-ARIN

RTechHandle: FISHE304-ARIN
RTechName:   Fisher, Evan 
RTechPhone:  +1-617-516-2000 
RTechEmail:  efisher@baincapital.com
RTechRef:    https://rdap.arin.net/registry/entity/FISHE304-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
AS3356	Level 3 Parent, LLC	US

Upstreams

AS Number	Description	Country
AS46887	Crown Castle Fiber LLC	US