ASN AS3999 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS3999?

AS3999 is listed under The Pennsylvania State University.

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.

AS3999 The Pennsylvania State University

ASN Lookup Tool

The Pennsylvania State University psu.edu

US 14 Routes

AS Data

AS3999

AS3999 – The Pennsylvania State University

AS Number	3999
AS Name	PENN-STATE
Organization	The Pennsylvania State University(psu-2)
Country	US
Website	psu.edu
Number of IPv4 Routes	13
Number of IPv6 Routes	1
ASN type	EDUCATION
Registry	ARIN
Date Allocated	1994-11-04

ASN Intelligence API for production workflows

Use ASN data for AS3999 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
2610:8::/32	AS3999	The Pennsylvania State University	The Pennsylvania State University	~79×10²⁷
128.118.0.0/16	AS3999	The Pennsylvania State University	The Pennsylvania State University	65536
150.231.0.0/16	AS3999	The Pennsylvania State University	The Milton S. Hershey Medical Center	65536
192.5.157.0/24	AS3999	The Pennsylvania State University	The Pennsylvania State University	256
192.5.161.0/24	AS3999	The Pennsylvania State University	The Pennsylvania State University	256
192.5.159.0/24	AS3999	The Pennsylvania State University	The Pennsylvania State University	256
192.112.253.0/24	AS3999	The Pennsylvania State University	The Pennsylvania State University	256
146.186.0.0/16	AS3999	The Pennsylvania State University	The Pennsylvania State University	65536
130.203.0.0/16	AS3999	The Pennsylvania State University	The Pennsylvania State University	65536
192.5.160.0/24	AS3999	The Pennsylvania State University	The Pennsylvania State University	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:       3999
ASName:         PENN-STATE
ASHandle:       AS3999
RegDate:        1994-11-04
Updated:        2012-02-24    
Ref:            https://rdap.arin.net/registry/autnum/3999


OrgName:        The Pennsylvania State University
OrgId:          PSU-2
Address:        105 USB 2
City:           University Park
StateProv:      PA
PostalCode:     16802
Country:        US
RegDate:        1986-03-31
Updated:        2024-11-25
Ref:            https://rdap.arin.net/registry/entity/PSU-2


OrgTechHandle: TTL2-ARIN
OrgTechName:   Long, Tom Tom
OrgTechPhone:  +1-814-867-2366 
OrgTechEmail:  tgl3@psu.edu
OrgTechRef:    https://rdap.arin.net/registry/entity/TTL2-ARIN

OrgDNSHandle: REESE192-ARIN
OrgDNSName:   Reese, Walter 
OrgDNSPhone:  +1-814-865-2404 
OrgDNSEmail:  wjr14@psu.edu
OrgDNSRef:    https://rdap.arin.net/registry/entity/REESE192-ARIN

OrgDNSHandle: MYERS631-ARIN
OrgDNSName:   Myers, William 
OrgDNSPhone:  +1-814-863-0550 
OrgDNSEmail:  wrm5@psu.edu
OrgDNSRef:    https://rdap.arin.net/registry/entity/MYERS631-ARIN

OrgDNSHandle: BILLE36-ARIN
OrgDNSName:   Biller, Brian 
OrgDNSPhone:  +1-814-865-2270 
OrgDNSEmail:  bjb256@psu.edu
OrgDNSRef:    https://rdap.arin.net/registry/entity/BILLE36-ARIN

OrgNOCHandle: NOC1840-ARIN
OrgNOCName:   Network Operations Center
OrgNOCPhone:  +1-814-865-4662 
OrgNOCEmail:  NOC@psu.edu
OrgNOCRef:    https://rdap.arin.net/registry/entity/NOC1840-ARIN

OrgTechHandle: ENFIE6-ARIN
OrgTechName:   Enfield, Chuck 
OrgTechPhone:  +1-814-863-8715 
OrgTechEmail:  cae104@psu.edu
OrgTechRef:    https://rdap.arin.net/registry/entity/ENFIE6-ARIN

OrgAbuseHandle: OIS6-ARIN
OrgAbuseName:   Office of Information Security
OrgAbusePhone:  +1-814-863-7804 
OrgAbuseEmail:  abuse@psu.edu
OrgAbuseRef:    https://rdap.arin.net/registry/entity/OIS6-ARIN

OrgNOCHandle: TTL2-ARIN
OrgNOCName:   Long, Tom Tom
OrgNOCPhone:  +1-814-880-1622 
OrgNOCEmail:  tgl3@psu.edu
OrgNOCRef:    https://rdap.arin.net/registry/entity/TTL2-ARIN

OrgTechHandle: ADMIN8570-ARIN
OrgTechName:   Admin POC
OrgTechPhone:  +1-717-683-6803 
OrgTechEmail:  aca111@psu.edu
OrgTechRef:    https://rdap.arin.net/registry/entity/ADMIN8570-ARIN

OrgTechHandle: APTP-ARIN
OrgTechName:   ARIN PSU Technical POC
OrgTechPhone:  +1-814-863-0859 
OrgTechEmail:  ip-tech@psu.edu
OrgTechRef:    https://rdap.arin.net/registry/entity/APTP-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
AS24482	SG.GS	SG
AS57695	Misaka Network, Inc.	US
AS7195	EDGEUNO S.A.S	CO
AS52320	GlobeNet Cabos Submarinos Colombia, S.A.S.	CO
AS3737	PenTeleData Inc.	US
AS6939	Hurricane Electric LLC	US
AS40934	Fortinet Inc.	US
AS6204	ZET.NET IP Transit	RO
AS4826	Vocus Connect International Backbone	AU
AS14537	Continent 8 LLC	US

Upstreams

AS Number	Description	Country
AS7195	EDGEUNO S.A.S	CO
AS6939	Hurricane Electric LLC	US
AS6204	ZET.NET IP Transit	RO
AS10886	University of Maryland	US
AS6057	Administracion Nacional de Telecomunicaciones	UY
AS7016	Comcast Cable Communications, LLC	US
AS37468	Angola Cables	AO
AS13786	Seabras 1 USA, LLC	US
AS60171	AFR IX TELECOM S.A.	ES
AS6461	Zayo Bandwidth	US