Report for 36026

Name

AS-CHI-CORP - CommonSpirit Health, 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.

36026 AS-CHI-CORP - CommonSpirit Health, US

  Adjacency:     6  Upstream:     6  Downstream:     0
  Upstream Adjacent AS list
    AS7018          ATT-INTERNET4 - AT&T Enterprises, LLC, US
    AS3356          LEVEL3 - Level 3 Parent, LLC, US
    AS33650         COMCAST-33650 - Comcast Cable Communications, LLC, US
    AS33662         CMCS - Comcast Cable Communications, LLC, US
    AS26794         DCN-AS - Dakota Carrier Network, US
    AS64227         CTC-AS2 - CONSOLIDATED TELEPHONE COMPANY, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
9466  AS36026        ORIGIN  Originate:      11520 /18.51  Transit:          0 /0.00  AS-CHI-CORP - CommonSpirit Health, 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       %
12539 AS36026       AS-CHI-CORP - CommonSpirit Health, US             18      5      2     15      3  16.67%


  Prefix               AS Path                              Aggregation Suggestion
  160.76.1.0/24        4777 2497 7018 36026   
  160.76.2.0/24        4777 2497 3356 36026   
  160.76.3.0/24        4777 2497 7018 36026   
  160.76.4.0/23        4777 2497 7018 36026 + Announce - aggregate of 160.76.4.0/24 (4777 2497 7018 36026) and 160.76.5.0/24 (4777 2497 7018 36026)
  160.76.4.0/24        4777 2497 7018 36026 - Withdrawn - aggregated with 160.76.5.0/24 (4777 2497 7018 36026)
  160.76.5.0/24        4777 2497 7018 36026 - Withdrawn - aggregated with 160.76.4.0/24 (4777 2497 7018 36026)
  160.76.6.0/24        4608 6939 64227 64227 64227 36026   
  160.76.7.0/24        4777 2497 7018 36026   
  160.76.252.0/24      4777 2516 7922 33662 36026   
  160.76.253.0/24      4608 6939 26794 36026   
  160.76.254.0/24      4777 2497 7018 36026   
  162.135.176.0/23     4777 2497 7018 36026   
  162.135.180.0/23     4777 2516 3356 36026   
  168.112.8.0/21       4777 2516 3356 36026   
  199.34.0.0/22        4777 2516 3356 36026 + Announce - aggregate of 199.34.0.0/23 (4777 2516 3356 36026) and 199.34.2.0/23 (4777 2516 3356 36026)
  199.34.0.0/23        4777 2516 3356 36026 - Withdrawn - aggregated with 199.34.2.0/23 (4777 2516 3356 36026)
  199.34.2.0/23        4777 2516 3356 36026 - Withdrawn - aggregated with 199.34.0.0/23 (4777 2516 3356 36026)
  205.167.128.0/23     4777 2497 7018 36026   
  205.167.128.0/24     4777 2497 7018 36026 - Withdrawn - matching aggregate 205.167.128.0/23 4777 2497 7018 36026
  209.193.112.0/20     4777 2516 7922 33650 36026   

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

AS36026   16 More Specifics   18 Total Advertisements   AS-CHI-CORP - CommonSpirit Health, US
    160.76.1.0/24                 160.76.0.0/16
    160.76.2.0/24                 160.76.0.0/16
    160.76.3.0/24                 160.76.0.0/16
    160.76.4.0/24                 160.76.0.0/16
    160.76.5.0/24                 160.76.0.0/16
    160.76.6.0/24                 160.76.0.0/16
    160.76.7.0/24                 160.76.0.0/16
    160.76.252.0/24               160.76.0.0/16
    160.76.253.0/24               160.76.0.0/16
    160.76.254.0/24               160.76.0.0/16
    162.135.176.0/23              162.135.0.0/16
    162.135.180.0/23              162.135.0.0/16
    168.112.8.0/21                168.112.0.0/16
    199.34.0.0/23                 199.34.0.0/21
    199.34.2.0/23                 199.34.0.0/21
    205.167.128.0/24              205.167.128.0/23

Whois Entry

whois: 402591

IANA has recorded AS36026 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS36026\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.
             #
             
             
             ASNumber:       36026
             ASName:         AS-CHI-CORP
             ASHandle:       AS36026
             RegDate:        2005-07-28
             Updated:        2017-10-31
             Ref:            https://rdap.arin.net/registry/autnum/36026
             
             
             OrgName:        CommonSpirit Health 
             OrgId:          CHI-19
             Address:        11045 E. Lansing Circle
             City:           Englewood
             StateProv:      CO
             PostalCode:     80112
             Country:        US
             RegDate:        2001-06-21
             Updated:        2025-09-19
             Ref:            https://rdap.arin.net/registry/entity/CHI-19
             
             
             OrgTechHandle: EDDYM4-ARIN
             OrgTechName:   Eddy, Michael 
             OrgTechPhone:  +1-623-428-9250 
             OrgTechEmail:  mike.eddy@dignityhealth.org
             OrgTechRef:    https://rdap.arin.net/registry/entity/EDDYM4-ARIN
             
             OrgAbuseHandle: MURAT6-ARIN
             OrgAbuseName:   Murataj, Ardit 
             OrgAbusePhone:  +1-720-875-7784 
             OrgAbuseEmail:  ardit.murataj@commonspirit.org
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/MURAT6-ARIN
             
             OrgTechHandle: HERMA212-ARIN
             OrgTechName:   Herman, Jacob 
             OrgTechPhone:  +1-888-307-0222 
             OrgTechEmail:  jacob.herman@commonspirit.org
             OrgTechRef:    https://rdap.arin.net/registry/entity/HERMA212-ARIN
             
             OrgTechHandle: MURAT6-ARIN
             OrgTechName:   Murataj, Ardit 
             OrgTechPhone:  +1-720-875-7784 
             OrgTechEmail:  ardit.murataj@commonspirit.org
             OrgTechRef:    https://rdap.arin.net/registry/entity/MURAT6-ARIN
             
             OrgAbuseHandle: CNA91-ARIN
             OrgAbuseName:   CommonSpirit Network Abuse
             OrgAbusePhone:  +1-888-307-0222 
             OrgAbuseEmail:  network-abuse@commonspirit.org
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/CNA91-ARIN
             
             RTechHandle: MCCUR8-ARIN
             RTechName:   McCurdy, David 
             RTechPhone:  +1-720-875-7760 
             RTechEmail:  davidmccurdy@catholichealth.net
             RTechRef:    https://rdap.arin.net/registry/entity/MCCUR8-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.
             #