Report for 6496

Name

COGENT-6496 - Cogent Communications, LLC, 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 AS4637) 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.

6496 ANET - ANET Internet Solutions, Inc

  Adjacency:     5  Upstream:     2  Downstream:     3
  Upstream Adjacent AS list
    AS3356    LEVEL3 Level 3 Communications
    AS2914    NTT-COMMUNICATIONS-2914 - NTT America, Inc.
  Downstream Adjacent AS list
    AS5773    SPEEDSITE - SpeedSite Online
    AS7748    SHUREAS - Shure Incorporated
    AS22457   --No Registry Entry--

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
1608  AS6496   ORG+TRN Originate:      98304 /15.42  Transit:      25344 /17.37 ANET - ANET Internet Solutions, Inc

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       %
 2888 AS6496  ANET - ANET Internet Solutions, Inc          53      5      2     50      3   5.66%


  Prefix               AS Path                              Aggregation Suggestion
  63.208.136.0/23      4637 3356 6496         
  64.4.192.0/19        4637 3356 6496         
  64.254.192.0/19      4637 3356 6496         
  66.71.224.0/20       4637 3356 6496         
  66.102.96.0/19       4637 3356 6496         
  66.213.165.0/24      4637 3356 6496         
  66.213.166.0/24      4637 3356 6496         
  166.90.214.0/23      4637 3356 6496         
  192.53.16.0/24       4637 3356 6496         
  192.216.144.0/21     4637 3491 2914 6496    
  198.76.26.0/23       4637 3356 6496         
  198.76.28.0/24       4637 3356 6496         
  198.77.86.0/23       4637 3356 6496         
  198.92.156.0/22      4637 3356 6496       + Announce - aggregate of 198.92.156.0/23 (4637 3356 6496) and 198.92.158.0/23 (4637 3356 6496)
  198.92.156.0/23      4637 3356 6496       - Withdrawn - aggregated with 198.92.158.0/23 (4637 3356 6496)
  198.92.158.0/23      4637 3356 6496       - Withdrawn - aggregated with 198.92.156.0/23 (4637 3356 6496)
  198.92.208.0/22      4637 3356 6496         
  204.126.30.0/23      4637 3356 6496         
  206.54.244.0/23      4637 3356 6496         
  206.54.248.0/23      4637 3356 6496         
  206.242.12.0/22      4637 3491 2914 6496    
  207.7.4.0/22         4637 3356 6496         
  207.7.16.0/23        4637 3356 6496         
  207.7.56.0/21        4637 3356 6496         
  207.112.140.0/22     4637 3356 6496         
  207.112.144.0/22     4637 3356 6496         
  207.112.192.0/20     4637 3356 6496       + Announce - aggregate of 207.112.192.0/21 (4637 3356 6496) and 207.112.200.0/21 (4637 3356 6496)
  207.112.192.0/21     4637 3356 6496       - Withdrawn - aggregated with 207.112.200.0/21 (4637 3356 6496)
  207.112.200.0/22     4637 3356 6496       - Withdrawn - aggregated with 207.112.204.0/22 (4637 3356 6496)
  207.112.204.0/22     4637 3356 6496       - Withdrawn - aggregated with 207.112.200.0/22 (4637 3356 6496)
  207.112.208.0/22     4637 3356 6496         
  207.227.72.0/21      4637 3356 6496         
  207.227.96.0/21      4637 3356 6496         
  207.227.148.0/22     4637 3356 6496         
  207.227.192.0/21     4637 3356 6496         
  207.227.224.0/23     4637 3356 6496         
  207.230.0.0/19       4637 3356 6496         
  209.100.80.0/21      4637 3356 6496         
  209.100.96.0/24      4637 3356 6496         
  209.100.104.0/21     4637 3356 6496         
  209.100.120.0/21     4637 3356 6496         
  209.100.156.0/22     4637 3356 6496         
  209.100.212.0/22     4637 3356 6496         
  209.100.220.0/24     4637 3356 6496         
  209.100.222.0/23     4637 3356 6496         
  209.100.232.0/23     4637 3356 6496         
  209.224.30.0/23      4637 3356 6496         
  209.224.60.0/22      4637 3356 6496         
  209.224.64.0/22      4637 3356 6496         
  209.224.192.0/21     4637 3356 6496         
  209.224.208.0/21     4637 3356 6496         
  209.224.238.0/23     4637 3356 6496         
  216.55.80.0/20       4637 3356 6496         
  216.177.96.0/19      4637 3356 6496         
  216.229.128.0/20     4637 3356 6496         

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

AS6496   48 More Specifics   57 Total Advertisements   ANET - ANET Internet Solutions, Inc
    63.208.136.0/23               63.208.0.0/13
    66.213.165.0/24               66.213.160.0/20
    66.213.166.0/24               66.213.160.0/20
    166.90.214.0/23               166.90.0.0/16
    192.53.16.0/24                192.53.0.0/19
    192.216.144.0/21              192.216.0.0/16
    198.76.26.0/23                198.76.0.0/14
    198.76.28.0/24                198.76.0.0/14
    198.77.86.0/23                198.76.0.0/14
    198.92.156.0/23               198.92.0.0/14
    198.92.158.0/23               198.92.0.0/14
    198.92.208.0/22               198.92.0.0/14
    206.54.244.0/23               206.54.224.0/19
    206.54.248.0/23               206.54.224.0/19
    206.242.12.0/22               206.242.0.0/16
    207.7.4.0/22                  207.7.0.0/18
    207.7.16.0/23                 207.7.0.0/18
    207.7.56.0/21                 207.7.0.0/18
    207.112.140.0/22              207.112.128.0/17
    207.112.144.0/22              207.112.128.0/17
    207.112.192.0/21              207.112.128.0/17
    207.112.200.0/22              207.112.128.0/17
    207.112.204.0/22              207.112.128.0/17
    207.112.208.0/22              207.112.128.0/17
    207.227.72.0/21               207.227.0.0/16
    207.227.96.0/21               207.227.0.0/16
    207.227.148.0/22              207.227.0.0/16
    207.227.192.0/21              207.227.0.0/16
    207.227.224.0/23              207.227.0.0/16
    208.77.224.0/24               208.77.224.0/21
    208.77.225.0/24               208.77.224.0/21
    208.77.226.0/24               208.77.224.0/21
    208.77.227.0/24               208.77.224.0/21
    209.100.80.0/21               209.100.0.0/16
    209.100.96.0/24               209.100.0.0/16
    209.100.104.0/21              209.100.0.0/16
    209.100.120.0/21              209.100.0.0/16
    209.100.156.0/22              209.100.0.0/16
    209.100.212.0/22              209.100.0.0/16
    209.100.220.0/24              209.100.0.0/16
    209.100.222.0/23              209.100.0.0/16
    209.100.232.0/23              209.100.0.0/16
    209.224.30.0/23               209.224.0.0/16
    209.224.60.0/22               209.224.0.0/16
    209.224.64.0/22               209.224.0.0/16
    209.224.192.0/21              209.224.0.0/16
    209.224.208.0/21              209.224.0.0/16
    209.224.238.0/23              209.224.0.0/16

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

    + 208.77.224.0/24             Announced
    + 208.77.225.0/24             Announced
    + 208.77.226.0/24             Announced
    + 208.77.227.0/24             Announced

Whois Entry

whois: 402617

IANA has recorded AS6496 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS6496\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:       6496
             ASName:         COGENT-6496
             ASHandle:       AS6496
             RegDate:        1996-05-07
             Updated:        2012-03-02
             Ref:            https://rdap.arin.net/registry/autnum/6496
             
             
             
             OrgName:        Cogent Communications, LLC
             OrgId:          COGC
             Address:        2450 N Street NW
             City:           Washington
             StateProv:      DC
             PostalCode:     20037
             Country:        US
             RegDate:        2000-05-30
             Updated:        2025-09-23
             Comment:        Geofeed https://geofeed.cogentco.com/geofeed.csv
             Ref:            https://rdap.arin.net/registry/entity/COGC
             
             ReferralServer:  rwhois://rwhois.cogentco.com:4321
             
             OrgAbuseHandle: COGEN-ARIN
             OrgAbuseName:   Cogent Abuse
             OrgAbusePhone:  +1-877-875-4311 
             OrgAbuseEmail:  abuse@cogentco.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/COGEN-ARIN
             
             OrgNOCHandle: ZC108-ARIN
             OrgNOCName:   Cogent Communications
             OrgNOCPhone:  +1-877-875-4311 
             OrgNOCEmail:  noc@cogentco.com
             OrgNOCRef:    https://rdap.arin.net/registry/entity/ZC108-ARIN
             
             OrgTechHandle: IPALL-ARIN
             OrgTechName:   IP Allocation
             OrgTechPhone:  +1-877-875-4311 
             OrgTechEmail:  ipalloc@cogentco.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/IPALL-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.
             #
             
             
             
             Found a referral to rwhois.cogentco.com:4321.
             
             %rwhois V-1.5:0010b0:00 rwhois.cogentco.com (CGNT rwhoisd 1.2.2)
             %error 230 No objects found