ASN AS4539 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS4539?

AS4539 is listed under Schweitzer Engineering Laboratories, 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?

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.

AS4539 Schweitzer Engineering Laboratories, Inc.

ASN Lookup Tool

Schweitzer Engineering Laboratories, Inc. selinc.com

US 2 Routes

AS Data

AS4539

AS4539 – Schweitzer Engineering Laboratories, Inc.

AS Number	4539
AS Name	SEL-AS
Organization	Schweitzer Engineering Laboratories, Inc.(schwe-5)
Country	US
Website	selinc.com
Number of IPv4 Routes	2
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2009-09-17

ASN Intelligence API for production workflows

Use ASN data for AS4539 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
74.117.213.0/24	AS4539	Schweitzer Engineering Laboratories, Inc.	Schweitzer Engineering Laboratories, Inc.	256
74.117.212.0/22	AS4539	Schweitzer Engineering Laboratories, Inc.	Schweitzer Engineering Laboratories, Inc.	1024

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:       4539
ASName:         SEL-AS
ASHandle:       AS4539
RegDate:        2009-09-17
Updated:        2012-03-02    
Ref:            https://rdap.arin.net/registry/autnum/4539


OrgName:        Schweitzer Engineering Laboratories, Inc.
OrgId:          SCHWE-5
Address:        2350 NE HOPKINS COURT
City:           Pullman
StateProv:      WA
PostalCode:     99163
Country:        US
RegDate:        2009-08-13
Updated:        2011-09-24
Ref:            https://rdap.arin.net/registry/entity/SCHWE-5


OrgAbuseHandle: MST325-ARIN
OrgAbuseName:   Stubbers, Mike 
OrgAbusePhone:  +1-509-332-1890 
OrgAbuseEmail:  mike_stubbers@selinc.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/MST325-ARIN

OrgTechHandle: MST325-ARIN
OrgTechName:   Stubbers, Mike 
OrgTechPhone:  +1-509-332-1890 
OrgTechEmail:  mike_stubbers@selinc.com
OrgTechRef:    https://rdap.arin.net/registry/entity/MST325-ARIN

OrgAbuseHandle: NIS8-ARIN
OrgAbuseName:   Network Infrastructure Support
OrgAbusePhone:  +1-509-332-1890 
OrgAbuseEmail:  postmaster@selinc.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/NIS8-ARIN

OrgTechHandle: NIS8-ARIN
OrgTechName:   Network Infrastructure Support
OrgTechPhone:  +1-509-332-1890 
OrgTechEmail:  postmaster@selinc.com
OrgTechRef:    https://rdap.arin.net/registry/entity/NIS8-ARIN

RTechHandle: NIS8-ARIN
RTechName:   Network Infrastructure Support
RTechPhone:  +1-509-332-1890 
RTechEmail:  postmaster@selinc.com
RTechRef:    https://rdap.arin.net/registry/entity/NIS8-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
AS23138	FIRST STEP INTERNET, LLC	US
AS20055	Wholesail networks LLC	US
AS209	CenturyLink Communications, LLC	US
AS3356	Level 3 Parent, LLC	US

Upstreams

AS Number	Description	Country
AS23138	FIRST STEP INTERNET, LLC	US
AS20055	Wholesail networks LLC	US
AS209	CenturyLink Communications, LLC	US
AS3356	Level 3 Parent, LLC	US