Report for 2734

Name

CORESITE - CoreSite, 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.

2734 CORESITE - CoreSite, US

  Adjacency:    21  Upstream:     3  Downstream:    18
  Upstream Adjacent AS list
    AS7575          AARNET-AS-AP Australian Academic and Research Network AARNet, AU
    AS3257          GTT-BACKBONE GTT, US
    AS6939          HURRICANE - Hurricane Electric LLC, US
  Downstream Adjacent AS list
    AS398079        EMINENT - Eminent, Inc, US
    AS62966         AS-BRIGHTEDGE-COM - BrightEdge Technologies, US
    AS401174        CA-CDT-MMBI-01 - State of California, Department of Technology, US
    AS22330         CATALINAMKT - Catalina Marketing Corporation, US
    AS30149         GS-FFN - The Goldman Sachs Group, Inc., US
    AS10255         SINISTER - Sinister and Solitary, US
    AS11333         CYBERTRAILS - CyberTrails, US
    AS26551         SARGENT-AND-LUNDY - Sargent & Lundy Engineers, US
    AS22437         CORESITE-SPARE - CoreSite, US
    AS29906         WESTAT-AS1 - Westat, Inc., US
    AS393827        BJWC - BJS WHOLESALE CLUB, US
    AS20304         LEPTON-GLOABL-SOLUTIONS-2012 - Lepton Global Solutions, LLC., US
    AS397822        CRC-ASN - California Resources Corporation, US
    AS54525         AGT01 - APPLIED GLOBAL TECHNOLOGIES, LLC, US
    AS4898          OPENTABLE-AS - Opentable, Inc., US
    AS46275         ACU - AcuCall, US
    AS5651          GMLL-AS - GMLL CAPITAL MANAGEMENT LLC, US
    AS396300        CORESITE-RETIRED - CoreSite, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
4332  AS2734         ORG+TRN Originate:      50176 /16.39  Transit:      13824 /18.25 CORESITE - CoreSite, 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       %
 1735 AS2734        CORESITE - CoreSite, US                           62     41      9     30     32  51.61%


  Prefix               AS Path                              Aggregation Suggestion
  66.35.64.0/20        4777 6939 2734       + Announce - aggregate of 66.35.64.0/21 (4777 6939 2734) and 66.35.72.0/21 (4777 6939 2734)
  66.35.64.0/23        4777 6939 2734       - Withdrawn - aggregated with 66.35.66.0/23 (4777 6939 2734)
  66.35.66.0/24        4777 6939 2734       - Withdrawn - aggregated with 66.35.67.0/24 (4777 6939 2734)
  66.35.67.0/24        4777 6939 2734       - Withdrawn - aggregated with 66.35.66.0/24 (4777 6939 2734)
  66.35.68.0/22        4777 6939 2734       - Withdrawn - aggregated with 66.35.64.0/22 (4777 6939 2734)
  66.35.72.0/21        4777 6939 2734       - Withdrawn - aggregated with 66.35.64.0/21 (4777 6939 2734)
  66.35.80.0/24        4777 6939 2734         
  66.35.83.0/24        4777 6939 2734         
  66.35.84.0/22        4777 6939 2734       + Announce - aggregate of 66.35.84.0/23 (4777 6939 2734) and 66.35.86.0/23 (4777 6939 2734)
  66.35.84.0/23        4777 6939 2734       - Withdrawn - aggregated with 66.35.86.0/23 (4777 6939 2734)
  66.35.86.0/24        4777 6939 2734       - Withdrawn - aggregated with 66.35.87.0/24 (4777 6939 2734)
  66.35.87.0/24        4777 6939 2734       - Withdrawn - aggregated with 66.35.86.0/24 (4777 6939 2734)
  66.35.88.0/21        4777 6939 2734         
  66.128.144.0/20      4777 6939 2734       + Announce - aggregate of 66.128.144.0/21 (4777 6939 2734) and 66.128.152.0/21 (4777 6939 2734)
  66.128.144.0/23      4777 6939 2734       - Withdrawn - aggregated with 66.128.146.0/23 (4777 6939 2734)
  66.128.146.0/24      4777 6939 2734       - Withdrawn - aggregated with 66.128.147.0/24 (4777 6939 2734)
  66.128.147.0/24      4777 6939 2734       - Withdrawn - aggregated with 66.128.146.0/24 (4777 6939 2734)
  66.128.148.0/22      4777 6939 2734       - Withdrawn - aggregated with 66.128.144.0/22 (4777 6939 2734)
  66.128.152.0/23      4777 6939 2734       - Withdrawn - aggregated with 66.128.154.0/23 (4777 6939 2734)
  66.128.154.0/24      4777 6939 2734       - Withdrawn - aggregated with 66.128.155.0/24 (4777 6939 2734)
  66.128.155.0/24      4777 6939 2734       - Withdrawn - aggregated with 66.128.154.0/24 (4777 6939 2734)
  66.128.156.0/22      4777 6939 2734       - Withdrawn - aggregated with 66.128.152.0/22 (4777 6939 2734)
  67.212.144.0/20      4777 6939 2734       + Announce - aggregate of 67.212.144.0/21 (4777 6939 2734) and 67.212.152.0/21 (4777 6939 2734)
  67.212.144.0/23      4777 6939 2734       - Withdrawn - aggregated with 67.212.146.0/23 (4777 6939 2734)
  67.212.146.0/23      4777 6939 2734       - Withdrawn - aggregated with 67.212.144.0/23 (4777 6939 2734)
  67.212.148.0/23      4777 6939 2734       - Withdrawn - aggregated with 67.212.150.0/23 (4777 6939 2734)
  67.212.150.0/24      4777 6939 2734       - Withdrawn - aggregated with 67.212.151.0/24 (4777 6939 2734)
  67.212.151.0/24      4777 6939 2734       - Withdrawn - aggregated with 67.212.150.0/24 (4777 6939 2734)
  67.212.152.0/24      4777 6939 2734       - Withdrawn - aggregated with 67.212.153.0/24 (4777 6939 2734)
  67.212.153.0/24      4777 6939 2734       - Withdrawn - aggregated with 67.212.152.0/24 (4777 6939 2734)
  67.212.154.0/24      4777 6939 2734       - Withdrawn - aggregated with 67.212.155.0/24 (4777 6939 2734)
  67.212.155.0/24      4777 6939 2734       - Withdrawn - aggregated with 67.212.154.0/24 (4777 6939 2734)
  67.212.156.0/23      4777 6939 2734       - Withdrawn - aggregated with 67.212.158.0/23 (4777 6939 2734)
  67.212.158.0/23      4777 6939 2734       - Withdrawn - aggregated with 67.212.156.0/23 (4777 6939 2734)
  98.158.144.0/22      4777 6939 2734         
  98.158.144.0/23      4777 6939 2734       - Withdrawn - matching aggregate 98.158.144.0/22 4777 6939 2734
  98.158.148.0/24      4777 6939 2734         
  98.158.150.0/23      4777 6939 2734         
  98.158.152.0/21      4777 6939 2734       + Announce - aggregate of 98.158.152.0/22 (4777 6939 2734) and 98.158.156.0/22 (4777 6939 2734)
  98.158.152.0/22      4777 6939 2734       - Withdrawn - aggregated with 98.158.156.0/22 (4777 6939 2734)
  98.158.156.0/24      4777 6939 2734       - Withdrawn - aggregated with 98.158.157.0/24 (4777 6939 2734)
  98.158.157.0/24      4777 6939 2734       - Withdrawn - aggregated with 98.158.156.0/24 (4777 6939 2734)
  98.158.158.0/23      4777 6939 2734       - Withdrawn - aggregated with 98.158.156.0/23 (4777 6939 2734)
  142.255.192.0/18     4777 6939 2734         
  162.216.127.0/24     4777 6939 2734         
  173.45.170.0/24      4777 6939 2734         
  173.45.174.0/23      4777 6939 2734       + Announce - aggregate of 173.45.174.0/24 (4777 6939 2734) and 173.45.175.0/24 (4777 6939 2734)
  173.45.174.0/24      4777 6939 2734       - Withdrawn - aggregated with 173.45.175.0/24 (4777 6939 2734)
  173.45.175.0/24      4777 6939 2734       - Withdrawn - aggregated with 173.45.174.0/24 (4777 6939 2734)
  192.34.20.0/22       4777 6939 2734       + Announce - aggregate of 192.34.20.0/23 (4777 6939 2734) and 192.34.22.0/23 (4777 6939 2734)
  192.34.20.0/23       4777 6939 2734       - Withdrawn - aggregated with 192.34.22.0/23 (4777 6939 2734)
  192.34.22.0/23       4777 6939 2734       - Withdrawn - aggregated with 192.34.20.0/23 (4777 6939 2734)
  192.150.41.0/24      4777 6939 2734         
  199.119.180.0/22     4777 6939 2734         
  199.197.10.0/23      4777 6939 2734         
  204.9.200.0/22       4777 6939 2734         
  204.9.204.0/24       4777 6939 2734         
  204.9.207.0/24       4777 6939 2734         
  206.223.143.0/24     4777 6939 2734         
  208.64.248.0/24      4777 6939 2734         
  208.64.251.0/24      4777 6939 2734         
  208.64.252.0/22      4777 6939 2734       + Announce - aggregate of 208.64.252.0/23 (4777 6939 2734) and 208.64.254.0/23 (4777 6939 2734)
  208.64.252.0/23      4777 6939 2734       - Withdrawn - aggregated with 208.64.254.0/23 (4777 6939 2734)
  208.64.254.0/23      4777 6939 2734       - Withdrawn - aggregated with 208.64.252.0/23 (4777 6939 2734)
  208.74.72.0/21       4777 6939 2734       + Announce - aggregate of 208.74.72.0/22 (4777 6939 2734) and 208.74.76.0/22 (4777 6939 2734)
  208.74.72.0/22       4777 6939 2734       - Withdrawn - aggregated with 208.74.76.0/22 (4777 6939 2734)
  208.74.76.0/23       4777 6939 2734       - Withdrawn - aggregated with 208.74.78.0/23 (4777 6939 2734)
  208.74.78.0/23       4777 6939 2734       - Withdrawn - aggregated with 208.74.76.0/23 (4777 6939 2734)
  208.77.96.0/21       4777 6939 2734         
  208.78.157.0/24      4777 6939 2734         
  208.84.144.0/21      4777 6939 2734         

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

AS2734   53 More Specifics   62 Total Advertisements   CORESITE - CoreSite, US
    66.35.64.0/23                 66.35.64.0/19
    66.35.66.0/24                 66.35.64.0/19
    66.35.67.0/24                 66.35.64.0/19
    66.35.68.0/22                 66.35.64.0/19
    66.35.72.0/21                 66.35.64.0/19
    66.35.80.0/24                 66.35.64.0/19
    66.35.83.0/24                 66.35.64.0/19
    66.35.84.0/23                 66.35.64.0/19
    66.35.86.0/24                 66.35.64.0/19
    66.35.87.0/24                 66.35.64.0/19
    66.35.88.0/21                 66.35.64.0/19
    66.128.144.0/23               66.128.144.0/20
    66.128.146.0/24               66.128.144.0/20
    66.128.147.0/24               66.128.144.0/20
    66.128.148.0/22               66.128.144.0/20
    66.128.152.0/23               66.128.144.0/20
    66.128.154.0/24               66.128.144.0/20
    66.128.155.0/24               66.128.144.0/20
    66.128.156.0/22               66.128.144.0/20
    67.212.144.0/23               67.212.144.0/20
    67.212.146.0/23               67.212.144.0/20
    67.212.148.0/23               67.212.144.0/20
    67.212.150.0/24               67.212.144.0/20
    67.212.151.0/24               67.212.144.0/20
    67.212.152.0/24               67.212.144.0/20
    67.212.153.0/24               67.212.144.0/20
    67.212.154.0/24               67.212.144.0/20
    67.212.155.0/24               67.212.144.0/20
    67.212.156.0/23               67.212.144.0/20
    67.212.158.0/23               67.212.144.0/20
    98.158.144.0/22               98.158.144.0/20
    98.158.144.0/23               98.158.144.0/20
    98.158.148.0/24               98.158.144.0/20
    98.158.150.0/23               98.158.144.0/20
    98.158.152.0/22               98.158.144.0/20
    98.158.156.0/24               98.158.144.0/20
    98.158.157.0/24               98.158.144.0/20
    98.158.158.0/23               98.158.144.0/20
    162.216.127.0/24              162.216.126.0/23
    173.45.174.0/24               173.45.174.0/23
    173.45.175.0/24               173.45.174.0/23
    192.34.20.0/23                192.34.20.0/22
    192.34.22.0/23                192.34.20.0/22
    204.9.200.0/22                204.9.200.0/21
    204.9.204.0/24                204.9.200.0/21
    204.9.207.0/24                204.9.200.0/21
    208.64.248.0/24               208.64.248.0/21
    208.64.251.0/24               208.64.248.0/21
    208.64.252.0/23               208.64.248.0/21
    208.64.254.0/23               208.64.248.0/21
    208.74.72.0/22                208.74.72.0/21
    208.74.76.0/23                208.74.72.0/21
    208.74.78.0/23                208.74.72.0/21

Prefixes added and withdrawn by this origin AS in the past 7 days.

    + 98.158.156.0/24             Announced

Whois Entry

whois: 402332

IANA has recorded AS2734 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS2734\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:       2734
             ASName:         CORESITE
             ASHandle:       AS2734
             RegDate:        2009-09-01
             Updated:        2012-03-02
             Ref:            https://rdap.arin.net/registry/autnum/2734
             
             
             OrgName:        CoreSite
             OrgId:          COWIL
             Address:        1001 17th St
             Address:        Suite 500
             City:           Denver
             StateProv:      CO
             PostalCode:     80202
             Country:        US
             RegDate:        2005-01-14
             Updated:        2025-04-09
             Ref:            https://rdap.arin.net/registry/entity/COWIL
             
             
             OrgTechHandle: STANL503-ARIN
             OrgTechName:   Stanley, Michael 
             OrgTechPhone:  +1-202-827-7002 
             OrgTechEmail:  michael.stanley@coresite.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/STANL503-ARIN
             
             OrgNOCHandle: CORES4-ARIN
             OrgNOCName:   Coresite OSC
             OrgNOCPhone:  +1-866-777-2673 
             OrgNOCEmail:  osc@coresite.com
             OrgNOCRef:    https://rdap.arin.net/registry/entity/CORES4-ARIN
             
             OrgTechHandle: CMM8-ARIN
             OrgTechName:   Malayter, Christopher Michael
             OrgTechPhone:  +1-608-301-5180 
             OrgTechEmail:  chris.malayter@coresite.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/CMM8-ARIN
             
             OrgTechHandle: JENSE37-ARIN
             OrgTechName:   Jensen, John 
             OrgTechPhone:  +1-571-612-7142 
             OrgTechEmail:  john.jensen@coresite.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/JENSE37-ARIN
             
             OrgTechHandle: JFA116-ARIN
             OrgTechName:   Favis, Jerome 
             OrgTechPhone:  +1-213-216-1155 
             OrgTechEmail:  jerome.favis@coresite.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/JFA116-ARIN
             
             OrgAbuseHandle: CORES5-ARIN
             OrgAbuseName:   CoreSite Abuse
             OrgAbusePhone:  +1-866-777-2673 
             OrgAbuseEmail:  abuse@coresite.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/CORES5-ARIN
             
             OrgTechHandle: REEDC55-ARIN
             OrgTechName:   Reed, Christopher 
             OrgTechPhone:  +1-213-327-1203 
             OrgTechEmail:  chris.reed@coresite.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/REEDC55-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.
             #