Report for 21754

Name

MARKEL-CORPORATION - Markel Corporation, 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.

21754 MARKEL-CORPORATION - Markel Corporation, US

  Adjacency:     1  Upstream:     1  Downstream:     0
  Upstream Adjacent AS list
    AS3356          LEVEL3 - Level 3 Parent, LLC, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
59852 AS21754        ORIGIN  Originate:        256 /24.00  Transit:          0 /0.00  MARKEL-CORPORATION - Markel Corporation, 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       %
35926 AS21754       MARKEL-CORPORATION - Markel Corporation, US        1      0      0      1      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  8.22.166.0/24        4777 2516 3356 21754   

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

AS21754   1 More Specifics   1 Total Advertisements   MARKEL-CORPORATION - Markel Corporation, US
    8.22.166.0/24                 8.16.0.0/12

Whois Entry

whois: 402603

IANA has recorded AS21754 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS21754\n             
             #
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             # 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:       21754
             ASName:         MARKEL-CORPORATION
             ASHandle:       AS21754
             RegDate:        2001-06-15
             Updated:        2012-02-24
             Ref:            https://rdap.arin.net/registry/autnum/21754
             
             
             OrgName:        Markel Corporation
             OrgId:          MARKEL-1
             Address:        4501 Highwoods Parkway
             City:           Glen Allen
             StateProv:      VA
             PostalCode:     23060
             Country:        US
             RegDate:        2001-06-15
             Updated:        2017-04-11
             Ref:            https://rdap.arin.net/registry/entity/MARKEL-1
             
             
             OrgAbuseHandle: STB3-ARIN
             OrgAbuseName:   Blosser, Sean T
             OrgAbusePhone:  +1-804-965-1603 
             OrgAbuseEmail:  sean.blosser@markel.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/STB3-ARIN
             
             OrgAbuseHandle: HURDE-ARIN
             OrgAbuseName:   Hurdelbrink, Paul 
             OrgAbusePhone:  +1-804-565-1997 
             OrgAbuseEmail:  paul.hurdelbrink@markel.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/HURDE-ARIN
             
             OrgTechHandle: HURDE-ARIN
             OrgTechName:   Hurdelbrink, Paul 
             OrgTechPhone:  +1-804-565-1997 
             OrgTechEmail:  paul.hurdelbrink@markel.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/HURDE-ARIN
             
             OrgTechHandle: STB3-ARIN
             OrgTechName:   Blosser, Sean T
             OrgTechPhone:  +1-804-965-1603 
             OrgTechEmail:  sean.blosser@markel.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/STB3-ARIN
             
             RTechHandle: RB1536-ARIN
             RTechName:   Boyle, Rory 
             RTechPhone:  +1-804-965-1692 
             RTechEmail:  rboyle@markelcorp.com
             RTechRef:    https://rdap.arin.net/registry/entity/RB1536-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.
             #