ASN AS21509 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS21509?

AS21509 is listed under Apollo Management, L.P..

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.

AS21509 Apollo Management, L.P.

ASN Lookup Tool

Apollo Management, L.P. apollolp.com

US 10 Routes

AS Data

AS21509

AS21509 – Apollo Management, L.P.

AS Number	21509
AS Name	APOLLONYC
Organization	Apollo Management, L.P.(amn-8)
Country	US
Website	apollolp.com
Number of IPv4 Routes	10
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2001-05-14

ASN Intelligence API for production workflows

Use ASN data for AS21509 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

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
65.119.216.0/24	AS21509	Apollo Management, L.P.	Apollo Management, L.P.	256
208.86.105.0/24	AS21509	Apollo Management, L.P.	Apollo Management, L.P.	256
63.234.240.0/24	AS21509	Apollo Management, L.P.	Apollo Management LP	256
67.132.92.0/24	AS21509	Apollo Management, L.P.	Apollo Management, L.P.	256
63.151.43.0/24	AS21509	Apollo Management, L.P.	APOLLO GLOBAL MANAGEMENT	256
89.167.135.0/24	AS21509	Apollo Management, L.P.	Apollo Management	256
63.151.42.0/24	AS21509	Apollo Management, L.P.	APOLLO GLOBAL MANAGEMENT	256
63.233.105.0/24	AS21509	Apollo Management, L.P.	CenturyLink Communications, LLC	256
49.143.235.0/24	AS21509	Apollo Management, L.P.	61 Robinson Road 11 1 Robinson Centre 65 6372	256
208.86.104.0/24	AS21509	Apollo Management, L.P.	Apollo Management, L.P.	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:       21509
ASName:         APOLLONYC
ASHandle:       AS21509
RegDate:        2001-05-14
Updated:        2012-03-02    
Ref:            https://rdap.arin.net/registry/autnum/21509


OrgName:        Apollo Management, L.P.
OrgId:          AMN-8
Address:        9 West 57th Street, 41st Floor
City:           New York
StateProv:      NY
PostalCode:     10019
Country:        US
RegDate:        2001-05-14
Updated:        2008-01-09
Ref:            https://rdap.arin.net/registry/entity/AMN-8


OrgNOCHandle: PMC307-ARIN
OrgNOCName:   McGuire, Patrick 
OrgNOCPhone:  +1-212-515-3200 
OrgNOCEmail:  internetops@apollolp.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/PMC307-ARIN

OrgAbuseHandle: PMC307-ARIN
OrgAbuseName:   McGuire, Patrick 
OrgAbusePhone:  +1-212-515-3200 
OrgAbuseEmail:  internetops@apollolp.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/PMC307-ARIN

OrgTechHandle: PMC307-ARIN
OrgTechName:   McGuire, Patrick 
OrgTechPhone:  +1-212-515-3200 
OrgTechEmail:  internetops@apollolp.com
OrgTechRef:    https://rdap.arin.net/registry/entity/PMC307-ARIN

RTechHandle: BB548-ARIN
RTechName:   Bach, Brad 
RTechPhone:  +1-310-712-0700 
RTechEmail:  bbach@titan-ca.com
RTechRef:    https://rdap.arin.net/registry/entity/BB548-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
AS3910	CenturyLink Communications, LLC	US
AS17762	Tata Teleservices Maharashtra Ltd	IN
AS9498	Bharti Airtel Ltd	IN
AS9498	Bharti Airtel Limited	IN
AS3549	Level 3 Communications, Inc. (GBLX)	US
AS5580	GTT Communications Netherlands B.V.	NL
AS286	GTT Communications Inc.	NL
AS286	GTT Communications Inc.	US
AS3257	GTT Communications Inc.	US
AS209	CenturyLink Communications, LLC	US

Upstreams

AS Number	Description	Country
AS3910	CenturyLink Communications, LLC	US
AS17762	Tata Teleservices Maharashtra Ltd	IN
AS9498	Bharti Airtel Limited	IN
AS5580	GTT Communications Netherlands B.V.	NL
AS286	GTT Communications Inc.	US
AS3257	GTT Communications Inc.	US
AS209	CenturyLink Communications, LLC	US
AS3356	Level 3 Parent, LLC	US