Report for 27357

Name

RACKSPACE - Rackspace Hosting, 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.

27357 RACKSPACE - Rackspace Hosting, US

  Adjacency:     2  Upstream:     1  Downstream:     1
  Upstream Adjacent AS list
    AS12200         RACKSPACE - Rackspace Hosting, US
  Downstream Adjacent AS list
    AS396479        MAILGUN-US - Mailgun Technologies Inc., US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
1045  AS27357        ORG+TRN Originate:     263936 /13.99  Transit:       7168 /19.19 RACKSPACE - Rackspace Hosting, 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       %
16317 AS27357       RACKSPACE - Rackspace Hosting, US                 36      4      2     34      2   5.56%


  Prefix               AS Path                              Aggregation Suggestion
  23.253.128.0/19      4777 2516 1299 12200 27357   
  65.61.141.0/24       4777 2516 1299 12200 27357   
  65.61.142.0/23       4777 2516 1299 12200 27357   
  65.61.146.0/23       4777 2516 1299 12200 27357   
  65.61.152.0/24       4777 2516 1299 12200 27357   
  65.61.186.0/23       4777 2516 1299 12200 27357   
  69.20.0.0/17         4777 2516 1299 12200 27357   
  72.4.112.0/20        4777 2516 1299 12200 27357   
  74.205.0.0/19        4777 2516 1299 12200 27357   
  104.130.0.0/18       4777 2516 1299 12200 27357   
  104.130.120.0/22     4777 2516 1299 12200 27357   
  104.130.160.0/19     4777 2516 1299 12200 27357   
  104.130.224.0/20     4777 2516 1299 12200 27357   
  104.239.160.0/19     4777 2516 1299 12200 27357   
  104.239.224.0/20     4777 2516 1299 12200 27357   
  104.239.248.0/21     4777 2516 1299 12200 27357   
  142.0.184.0/22       4777 2516 1299 12200 27357   
  146.20.0.0/16        4777 2516 1299 12200 27357   
  156.43.59.0/24       4777 2516 1299 12200 27357   
  159.135.64.0/20      4777 2516 1299 12200 27357   
  159.135.254.0/24     4777 2516 1299 12200 27357   
  162.209.96.0/19      4777 2516 1299 12200 27357   
  162.242.192.0/18     4777 2516 1299 12200 27357 + Announce - aggregate of 162.242.192.0/19 (4777 2516 1299 12200 27357) and 162.242.224.0/19 (4777 2516 1299 12200 27357)
  162.242.192.0/19     4777 2516 1299 12200 27357 - Withdrawn - aggregated with 162.242.224.0/19 (4777 2516 1299 12200 27357)
  162.242.224.0/19     4777 2516 1299 12200 27357 - Withdrawn - aggregated with 162.242.192.0/19 (4777 2516 1299 12200 27357)
  172.99.64.0/19       4777 2516 1299 12200 27357   
  173.203.128.0/18     4777 2516 1299 12200 27357   
  173.204.89.0/24      4777 2516 1299 12200 27357   
  192.68.40.0/24       4777 2516 1299 12200 27357   
  198.210.16.0/21      4777 2516 1299 12200 27357 + Announce - aggregate of 198.210.16.0/22 (4777 2516 1299 12200 27357) and 198.210.20.0/22 (4777 2516 1299 12200 27357)
  198.210.16.0/22      4777 2516 1299 12200 27357 - Withdrawn - aggregated with 198.210.20.0/22 (4777 2516 1299 12200 27357)
  198.210.20.0/22      4777 2516 1299 12200 27357 - Withdrawn - aggregated with 198.210.16.0/22 (4777 2516 1299 12200 27357)
  204.51.224.0/24      4777 2516 1299 12200 27357   
  204.51.235.0/24      4777 2516 1299 12200 27357   
  204.232.128.0/18     4777 2516 1299 12200 27357   
  204.232.224.0/19     4777 2516 1299 12200 27357   
  207.97.192.0/18      4777 2516 1299 12200 27357   
  209.0.201.0/24       4608 7575 1299 12200 27357   

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

AS27357   32 More Specifics   36 Total Advertisements   RACKSPACE - Rackspace Hosting, US
    23.253.128.0/19               23.253.0.0/16
    65.61.141.0/24                65.61.128.0/18
    65.61.142.0/23                65.61.128.0/18
    65.61.146.0/23                65.61.128.0/18
    65.61.152.0/24                65.61.128.0/18
    65.61.186.0/23                65.61.128.0/18
    74.205.0.0/19                 74.205.0.0/17
    104.130.0.0/18                104.130.0.0/16
    104.130.120.0/22              104.130.0.0/16
    104.130.160.0/19              104.130.0.0/16
    104.130.224.0/20              104.130.0.0/16
    104.239.160.0/19              104.239.128.0/17
    104.239.224.0/20              104.239.128.0/17
    104.239.248.0/21              104.239.128.0/17
    142.0.184.0/22                142.0.176.0/20
    156.43.59.0/24                156.43.0.0/16
    159.135.64.0/20               159.135.64.0/18
    159.135.254.0/24              159.135.240.0/20
    162.209.96.0/19               162.209.0.0/17
    162.242.192.0/19              162.242.128.0/17
    162.242.224.0/19              162.242.128.0/17
    172.99.64.0/19                172.99.64.0/18
    173.203.128.0/18              173.203.0.0/16
    173.204.89.0/24               173.204.0.0/16
    192.68.40.0/24                192.68.40.0/21
    198.210.16.0/22               198.210.16.0/20
    198.210.20.0/22               198.210.16.0/20
    204.51.224.0/24               204.51.128.0/17
    204.51.235.0/24               204.51.128.0/17
    204.232.128.0/18              204.232.128.0/17
    204.232.224.0/19              204.232.128.0/17
    209.0.201.0/24                209.0.0.0/16

Whois Entry

whois: 402603

IANA has recorded AS27357 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS27357\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:       27357
             ASName:         RACKSPACE
             ASHandle:       AS27357
             RegDate:        2003-02-20
             Updated:        2012-02-24
             Ref:            https://rdap.arin.net/registry/autnum/27357
             
             
             Rackspace Hosting (RACKS-8)
             
             
             OrgTechHandle: ZR9-ARIN
             OrgTechName:   Rackspace, com 
             OrgTechPhone:  +1-210-312-4000 
             OrgTechEmail:  hostmaster@rackspace.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/ZR9-ARIN
             
             OrgAbuseHandle: ABUSE45-ARIN
             OrgAbuseName:   Abuse Desk
             OrgAbusePhone:  +1-210-312-4000 
             OrgAbuseEmail:  abuse@rackspace.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/ABUSE45-ARIN
             
             OrgTechHandle: HANSE157-ARIN
             OrgTechName:   Hansell, Chris 
             OrgTechPhone:  +1-210-312-4000 
             OrgTechEmail:  chris.hansell@rackspace.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/HANSE157-ARIN
             
             OrgNOCHandle: HANSE157-ARIN
             OrgNOCName:   Hansell, Chris 
             OrgNOCPhone:  +1-210-312-4000 
             OrgNOCEmail:  chris.hansell@rackspace.com
             OrgNOCRef:    https://rdap.arin.net/registry/entity/HANSE157-ARIN
             
             OrgTechHandle: IPADM17-ARIN
             OrgTechName:   IPADMIN
             OrgTechPhone:  +1-210-312-4000 
             OrgTechEmail:  hostmaster@rackspace.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/IPADM17-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.
             #