Report for 4539

Name

SEL-AS - Schweitzer Engineering Laboratories, Inc., US

AS Adjacency Report

In the context of this report "Upstream" indicates that there is an adjacent AS that lines between the BGP table collection point (in this case at AS2.0) and the specified AS. Similarly, "Downstream" refers to an adjacent AS that lies beyond the specified AS. This upstream / downstream categorisation is strictly a description relative topology, and should not be confused with provider / customer / peer inter-AS relationships.

4539 SEL-AS - Schweitzer Engineering Laboratories, Inc., US

  Adjacency:     3  Upstream:     3  Downstream:     0
  Upstream Adjacent AS list
    AS23138         FIRST-STEP - FIRST STEP INTERNET, LLC, US
    AS209           CENTURYLINK-US-LEGACY-QWEST - CenturyLink Communications, LLC, US
    AS3356          LEVEL3 - Level 3 Parent, LLC, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
32501 AS4539         ORIGIN  Originate:       1280 /21.68  Transit:          0 /0.00  SEL-AS - Schweitzer Engineering Laboratories, Inc., US

Aggregation Suggestions

        Filter: Aggregates, Specifics

This report does not take into account conditions local to each origin AS in terms of policy or traffic engineering requirements, so this is an approximate guideline as to aggregation possibilities.

 Rank AS            AS Name                                      Current  Wthdw  Aggte  Annce Redctn       %
31418 AS4539        SEL-AS - Schweitzer Engineering Laboratories,      2      0      0      2      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  74.117.212.0/22      4777 2497 3356 4539    
  74.117.213.0/24      4777 2497 3356 209 4539   

Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.

AS4539   1 More Specifics   2 Total Advertisements   SEL-AS - Schweitzer Engineering Laboratories, Inc., US
    74.117.213.0/24               74.117.212.0/22

Whois Entry

whois: 402332

IANA has recorded AS4539 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS4539\n             
             #
             # 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.
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             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:        2026-03-30
             Ref:            https://rdap.arin.net/registry/entity/SCHWE-5
             
             
             OrgTechHandle: NETTE17-ARIN
             OrgTechName:   Netteam
             OrgTechPhone:  +1-509-332-1890 
             OrgTechEmail:  postmaster@selinc.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/NETTE17-ARIN
             
             OrgTechHandle: LAPRA18-ARIN
             OrgTechName:   Laprade, Greg 
             OrgTechPhone:  +1-509-332-1890 
             OrgTechEmail:  greg_laprade@selinc.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/LAPRA18-ARIN
             
             OrgTechHandle: MST325-ARIN
             OrgTechName:   Stubbers, Mike 
             OrgTechPhone:  +1-509-332-1890 
             OrgTechEmail:  greg_laprade@selinc.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/MST325-ARIN
             
             OrgAbuseHandle: MST325-ARIN
             OrgAbuseName:   Stubbers, Mike 
             OrgAbusePhone:  +1-509-332-1890 
             OrgAbuseEmail:  greg_laprade@selinc.com
             OrgAbuseRef:    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
             
             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.
             #