ASN AS20235 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS20235?

AS20235 is listed under Mylan Pharmaceuticals Inc..

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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AS20235 Mylan Pharmaceuticals Inc.

ASN Lookup Tool

Mylan Pharmaceuticals Inc. mylan.com

US 2 Routes

AS Data

AS20235

AS20235 – Mylan Pharmaceuticals Inc.

AS Number	20235
AS Name	MYLANP-AS
Organization	Mylan Pharmaceuticals Inc.(mylanp)
Country	US
Website	mylan.com
Number of IPv4 Routes	2
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2007-09-05

ASN Intelligence API for production workflows

Use ASN data for AS20235 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
204.128.2.0/24	AS20235	Mylan Pharmaceuticals Inc.	Mylan Pharmaceuticals Inc.	256
204.128.4.0/23	AS20235	Mylan Pharmaceuticals Inc.	Mylan Pharmaceuticals Inc.	512

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:       20235
ASName:         MYLANP-AS
ASHandle:       AS20235
RegDate:        2007-09-05
Updated:        2012-03-02    
Ref:            https://rdap.arin.net/registry/autnum/20235


OrgName:        Mylan Pharmaceuticals Inc.
OrgId:          MYLANP
Address:        P.O. Box 4310
City:           Morgantown
StateProv:      WV
PostalCode:     26504
Country:        US
RegDate:        1994-08-22
Updated:        2019-06-20
Ref:            https://rdap.arin.net/registry/entity/MYLANP


OrgAbuseHandle: LACEY21-ARIN
OrgAbuseName:   Lacey, Randy 
OrgAbusePhone:  +1-724-678-1053 
OrgAbuseEmail:  randy.lacey@mylanlabs.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/LACEY21-ARIN

OrgTechHandle: LACEY21-ARIN
OrgTechName:   Lacey, Randy 
OrgTechPhone:  +1-724-678-1053 
OrgTechEmail:  randy.lacey@mylanlabs.com
OrgTechRef:    https://rdap.arin.net/registry/entity/LACEY21-ARIN

OrgTechHandle: MALIK47-ARIN
OrgTechName:   Malik, Amit 
OrgTechPhone:  +916366859209 
OrgTechEmail:  AmitKumar.Malik@viatris.com
OrgTechRef:    https://rdap.arin.net/registry/entity/MALIK47-ARIN

OrgTechHandle: SG1102-ARIN
OrgTechName:   Gentry, Shawn 
OrgTechPhone:  +1-304-554-6107 
OrgTechEmail:  shawn.gentry@mylanlabs.com
OrgTechRef:    https://rdap.arin.net/registry/entity/SG1102-ARIN

RTechHandle: RAB1252-ARIN
RTechName:   Boyce, Richard Arlen
RTechPhone:  +1-412-378-7740 
RTechEmail:  richard.boyce@mylan.com
RTechRef:    https://rdap.arin.net/registry/entity/RAB1252-ARIN

RTechHandle: SG1102-ARIN
RTechName:   Gentry, Shawn 
RTechPhone:  +1-304-554-6107 
RTechEmail:  shawn.gentry@mylanlabs.com
RTechRef:    https://rdap.arin.net/registry/entity/SG1102-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
AS7018	AT&T Enterprises, LLC	US
AS6536	CityNet	US
AS3356	Level 3 Parent, LLC	US

Upstreams

AS Number	Description	Country
AS7018	AT&T Enterprises, LLC	US
AS6536	CityNet	US
AS3356	Level 3 Parent, LLC	US