Report for 12156

Name

AURORA-COLORADO - City of Aurora Colorado, 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 AS6447) 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.

12156 AURORA-COLORADO, US

  Adjacency:     3  Upstream:     3  Downstream:     0
  Upstream Adjacent AS list
    AS13649         ASN-FLEXENTIAL, US
    AS209           CENTURYLINK-US-LEGACY-QWEST, US
    AS33652         CMCS, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
29158 AS12156        ORIGIN  Originate:       1792 /21.19  Transit:          0 /0.00  AURORA-COLORADO, 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       %
32960 AS12156       AURORA-COLORADO, US                                6      0      0      6      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  192.78.99.0/24       6939 7922 33652 12156   
  198.148.209.0/24     6939 7922 33652 12156   
  198.199.187.0/24     6939 7922 33652 12156   
  198.199.188.0/24     6939 7922 33652 12156   
  205.167.144.0/23     6939 7922 33652 12156   
  205.167.144.0/24     3257 13649 12156       

Whois Entry

whois: 402590

IANA has recorded AS12156 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS12156\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:       12156
             ASName:         AURORA-COLORADO
             ASHandle:       AS12156
             RegDate:        2018-01-24
             Updated:        2018-01-24
             Ref:            https://rdap.arin.net/registry/autnum/12156
             
             
             OrgName:        City of Aurora Colorado
             OrgId:          CAC-3
             Address:        15151 E. Alameda Parkway
             Address:        Information Technology
             City:           Aurora
             StateProv:      CO
             PostalCode:     80012
             Country:        US
             RegDate:        1994-03-14
             Updated:        2022-07-12
             Ref:            https://rdap.arin.net/registry/entity/CAC-3
             
             
             OrgNOCHandle: NEWMA272-ARIN
             OrgNOCName:   NEWMAN, SCOTT 
             OrgNOCPhone:  +1-303-739-7015 
             OrgNOCEmail:  smnewman@auroragov.org
             OrgNOCRef:    https://rdap.arin.net/registry/entity/NEWMA272-ARIN
             
             OrgTechHandle: NEWMA272-ARIN
             OrgTechName:   NEWMAN, SCOTT 
             OrgTechPhone:  +1-303-739-7015 
             OrgTechEmail:  smnewman@auroragov.org
             OrgTechRef:    https://rdap.arin.net/registry/entity/NEWMA272-ARIN
             
             OrgAbuseHandle: OTIEN-ARIN
             OrgAbuseName:   Otieno, Eric 
             OrgAbusePhone:  +1-303-739-7557 
             OrgAbuseEmail:  eotieno@auroragov.org
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/OTIEN-ARIN
             
             OrgAbuseHandle: SMITH6162-ARIN
             OrgAbuseName:   Smith, Josh 
             OrgAbusePhone:  +1-303-739-7760 
             OrgAbuseEmail:  jomsmith@auroragov.org
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/SMITH6162-ARIN
             
             OrgDNSHandle: OTIEN-ARIN
             OrgDNSName:   Otieno, Eric 
             OrgDNSPhone:  +1-303-739-7557 
             OrgDNSEmail:  eotieno@auroragov.org
             OrgDNSRef:    https://rdap.arin.net/registry/entity/OTIEN-ARIN
             
             OrgRoutingHandle: NEWMA272-ARIN
             OrgRoutingName:   NEWMAN, SCOTT 
             OrgRoutingPhone:  +1-303-739-7015 
             OrgRoutingEmail:  smnewman@auroragov.org
             OrgRoutingRef:    https://rdap.arin.net/registry/entity/NEWMA272-ARIN
             
             OrgDNSHandle: NEWMA272-ARIN
             OrgDNSName:   NEWMAN, SCOTT 
             OrgDNSPhone:  +1-303-739-7015 
             OrgDNSEmail:  smnewman@auroragov.org
             OrgDNSRef:    https://rdap.arin.net/registry/entity/NEWMA272-ARIN
             
             OrgRoutingHandle: OTIEN-ARIN
             OrgRoutingName:   Otieno, Eric 
             OrgRoutingPhone:  +1-303-739-7557 
             OrgRoutingEmail:  eotieno@auroragov.org
             OrgRoutingRef:    https://rdap.arin.net/registry/entity/OTIEN-ARIN
             
             OrgAbuseHandle: NEWMA272-ARIN
             OrgAbuseName:   NEWMAN, SCOTT 
             OrgAbusePhone:  +1-303-739-7015 
             OrgAbuseEmail:  smnewman@auroragov.org
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/NEWMA272-ARIN
             
             OrgDNSHandle: SMITH6162-ARIN
             OrgDNSName:   Smith, Josh 
             OrgDNSPhone:  +1-303-739-7760 
             OrgDNSEmail:  jomsmith@auroragov.org
             OrgDNSRef:    https://rdap.arin.net/registry/entity/SMITH6162-ARIN
             
             OrgTechHandle: COAAR-ARIN
             OrgTechName:   COA-ARIN
             OrgTechPhone:  +1-303-739-7545 
             OrgTechEmail:  COA-ARIN@auroragov.org
             OrgTechRef:    https://rdap.arin.net/registry/entity/COAAR-ARIN
             
             OrgRoutingHandle: SMITH6162-ARIN
             OrgRoutingName:   Smith, Josh 
             OrgRoutingPhone:  +1-303-739-7760 
             OrgRoutingEmail:  jomsmith@auroragov.org
             OrgRoutingRef:    https://rdap.arin.net/registry/entity/SMITH6162-ARIN
             
             OrgTechHandle: OTIEN-ARIN
             OrgTechName:   Otieno, Eric 
             OrgTechPhone:  +1-303-739-7557 
             OrgTechEmail:  eotieno@auroragov.org
             OrgTechRef:    https://rdap.arin.net/registry/entity/OTIEN-ARIN
             
             OrgNOCHandle: OTIEN-ARIN
             OrgNOCName:   Otieno, Eric 
             OrgNOCPhone:  +1-303-739-7557 
             OrgNOCEmail:  eotieno@auroragov.org
             OrgNOCRef:    https://rdap.arin.net/registry/entity/OTIEN-ARIN
             
             OrgNOCHandle: SMITH6162-ARIN
             OrgNOCName:   Smith, Josh 
             OrgNOCPhone:  +1-303-739-7760 
             OrgNOCEmail:  jomsmith@auroragov.org
             OrgNOCRef:    https://rdap.arin.net/registry/entity/SMITH6162-ARIN
             
             OrgTechHandle: SMITH6162-ARIN
             OrgTechName:   Smith, Josh 
             OrgTechPhone:  +1-303-739-7760 
             OrgTechEmail:  jomsmith@auroragov.org
             OrgTechRef:    https://rdap.arin.net/registry/entity/SMITH6162-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.
             #