Report for 40021

Name

CONTABO-40021 - Contabo Inc., 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.

40021 CONTABO-40021 - Contabo Inc., US

  Adjacency:     2  Upstream:     2  Downstream:     0
  Upstream Adjacent AS list
    AS174           COGENT-174 - Cogent Communications, LLC, US
    AS3356          LEVEL3 - Level 3 Parent, LLC, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
1726  AS40021        ORIGIN  Originate:     139264 /14.91  Transit:          0 /0.00  CONTABO-40021 - Contabo Inc., 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       %
 4343 AS40021       CONTABO-40021 - Contabo Inc., US                  90     22     10     78     12  13.33%


  Prefix               AS Path                              Aggregation Suggestion
  5.180.151.0/24       4777 2516 174 40021    
  5.252.52.0/22        4777 2516 174 40021  + Announce - aggregate of 5.252.52.0/23 (4777 2516 174 40021) and 5.252.54.0/23 (4777 2516 174 40021)
  5.252.52.0/23        4777 2516 174 40021  - Withdrawn - aggregated with 5.252.54.0/23 (4777 2516 174 40021)
  5.252.54.0/23        4777 2516 174 40021  - Withdrawn - aggregated with 5.252.52.0/23 (4777 2516 174 40021)
  31.220.96.0/21       4777 2497 3356 40021   
  38.105.209.0/24      4777 2516 3356 40021   
  38.105.232.0/24      4777 2516 3356 40021   
  45.137.192.0/24      4777 2516 174 40021    
  45.137.194.0/24      4777 2497 3356 40021   
  62.146.168.0/21      4777 2497 3356 40021   
  62.146.176.0/21      4777 2516 174 40021    
  62.146.224.0/21      4777 2497 3356 40021   
  66.94.96.0/20        4777 2516 3356 40021 + Announce - aggregate of 66.94.96.0/21 (4777 2516 3356 40021) and 66.94.104.0/21 (4777 2516 3356 40021)
  66.94.96.0/21        4777 2516 3356 40021 - Withdrawn - aggregated with 66.94.104.0/21 (4777 2516 3356 40021)
  66.94.104.0/21       4777 2516 3356 40021 - Withdrawn - aggregated with 66.94.96.0/21 (4777 2516 3356 40021)
  66.94.112.0/22       4777 2497 3356 40021   
  66.94.116.0/23       4777 2516 3356 40021   
  66.94.118.0/24       4777 2516 3356 40021   
  66.94.119.0/24       4777 2516 174 40021    
  66.94.120.0/21       4777 2497 3356 40021   
  81.22.38.0/24        4777 2497 3356 40021   
  82.197.64.0/22       4777 2497 3356 40021   
  85.239.230.0/23      4777 2516 3356 40021   
  85.239.232.0/21      4777 2497 3356 40021   
  85.239.240.0/21      4777 2516 174 40021    
  85.239.248.0/23      4777 2516 3356 40021   
  85.239.250.0/24      4777 2516 3356 40021   
  86.48.16.0/20        4777 2516 3356 40021 + Announce - aggregate of 86.48.16.0/21 (4777 2516 3356 40021) and 86.48.24.0/21 (4777 2516 3356 40021)
  86.48.16.0/22        4777 2516 3356 40021 - Withdrawn - aggregated with 86.48.20.0/22 (4777 2516 3356 40021)
  86.48.20.0/22        4777 2516 3356 40021 - Withdrawn - aggregated with 86.48.16.0/22 (4777 2516 3356 40021)
  86.48.24.0/22        4777 2516 3356 40021 - Withdrawn - aggregated with 86.48.28.0/22 (4777 2516 3356 40021)
  86.48.28.0/22        4777 2516 3356 40021 - Withdrawn - aggregated with 86.48.24.0/22 (4777 2516 3356 40021)
  89.117.16.0/21       4777 2497 3356 40021   
  89.117.72.0/21       4777 2497 3356 40021   
  89.117.144.0/21      4777 2516 174 40021    
  92.118.56.0/22       4777 2516 174 40021  + Announce - aggregate of 92.118.56.0/23 (4777 2516 174 40021) and 92.118.58.0/23 (4777 2516 174 40021)
  92.118.56.0/23       4777 2516 174 40021  - Withdrawn - aggregated with 92.118.58.0/23 (4777 2516 174 40021)
  92.118.58.0/23       4777 2516 174 40021  - Withdrawn - aggregated with 92.118.56.0/23 (4777 2516 174 40021)
  94.72.112.0/21       4777 2516 174 40021    
  94.72.120.0/21       4777 2497 3356 40021   
  94.101.113.0/24      4777 2516 174 40021    
  109.236.60.0/24      4777 2516 3356 40021   
  144.126.128.0/20     4777 2516 174 40021    
  144.126.144.0/22     4777 2497 3356 40021   
  144.126.148.0/22     4777 2516 3356 40021   
  144.126.152.0/21     4777 2516 174 40021    
  147.93.0.0/21        4777 2497 3356 40021   
  147.93.128.0/20      4777 2516 174 40021    
  147.93.144.0/22      4777 2497 3356 40021   
  147.93.150.0/24      4777 2516 174 40021    
  147.93.176.0/20      4777 2497 3356 40021   
  154.12.224.0/21      4777 2516 174 40021    
  154.12.232.0/21      4777 2516 3356 40021   
  154.12.240.0/21      4777 2497 3356 40021   
  154.12.248.0/22      4777 2516 3356 40021   
  154.12.252.0/22      4777 2516 174 40021    
  154.38.160.0/20      4777 2516 174 40021  + Announce - aggregate of 154.38.160.0/21 (4777 2516 174 40021) and 154.38.168.0/21 (4777 2516 174 40021)
  154.38.160.0/21      4777 2516 174 40021  - Withdrawn - aggregated with 154.38.168.0/21 (4777 2516 174 40021)
  154.38.168.0/21      4777 2516 174 40021  - Withdrawn - aggregated with 154.38.160.0/21 (4777 2516 174 40021)
  154.38.176.0/20      4777 2497 3356 40021 + Announce - aggregate of 154.38.176.0/21 (4777 2497 3356 40021) and 154.38.184.0/21 (4777 2497 3356 40021)
  154.38.176.0/21      4777 2497 3356 40021 - Withdrawn - aggregated with 154.38.184.0/21 (4777 2497 3356 40021)
  154.38.184.0/21      4777 2497 3356 40021 - Withdrawn - aggregated with 154.38.176.0/21 (4777 2497 3356 40021)
  154.53.32.0/21       4777 2516 3356 40021   
  154.53.40.0/21       4777 2516 174 40021    
  154.53.48.0/21       4777 2516 3356 40021   
  154.53.56.0/21       4777 2497 3356 40021   
  157.173.192.0/20     4777 2516 174 40021    
  164.5.254.0/23       4777 2497 3356 40021   
  176.57.165.0/24      4777 2497 3356 40021   
  185.111.156.0/24     4777 2497 3356 40021   
  185.187.235.0/24     4777 2516 174 40021    
  194.113.67.0/24      4777 2516 174 40021    
  194.140.196.0/22     4777 2497 3356 40021   
  194.238.24.0/21      4777 2516 174 40021    
  195.26.240.0/20      4777 2516 174 40021  + Announce - aggregate of 195.26.240.0/21 (4777 2516 174 40021) and 195.26.248.0/21 (4777 2516 174 40021)
  195.26.240.0/21      4777 2516 174 40021  - Withdrawn - aggregated with 195.26.248.0/21 (4777 2516 174 40021)
  195.26.248.0/21      4777 2516 174 40021  - Withdrawn - aggregated with 195.26.240.0/21 (4777 2516 174 40021)
  207.244.224.0/19     4777 2516 174 40021  + Announce - aggregate of 207.244.224.0/20 (4777 2516 174 40021) and 207.244.240.0/20 (4777 2516 174 40021)
  207.244.224.0/20     4777 2516 174 40021  - Withdrawn - aggregated with 207.244.240.0/20 (4777 2516 174 40021)
  207.244.240.0/20     4777 2516 174 40021  - Withdrawn - aggregated with 207.244.224.0/20 (4777 2516 174 40021)
  209.126.0.0/20       4777 2516 174 40021    
  209.126.70.0/24      4777 2497 3356 40021   
  209.126.77.0/24      4777 2516 3356 40021   
  209.126.79.0/24      4777 2516 3356 40021   
  209.126.80.0/21      4777 2516 174 40021    
  209.145.48.0/20      4777 2516 174 40021    
  212.28.176.0/20      4777 2516 174 40021  + Announce - aggregate of 212.28.176.0/21 (4777 2516 174 40021) and 212.28.184.0/21 (4777 2516 174 40021)
  212.28.176.0/21      4777 2516 174 40021  - Withdrawn - aggregated with 212.28.184.0/21 (4777 2516 174 40021)
  212.28.184.0/21      4777 2516 174 40021  - Withdrawn - aggregated with 212.28.176.0/21 (4777 2516 174 40021)
  212.56.32.0/22       4777 2497 3356 40021   
  212.56.36.0/22       4777 2516 174 40021    
  212.56.40.0/21       4777 2516 174 40021    
  217.77.0.0/20        4777 2516 174 40021  + Announce - aggregate of 217.77.0.0/21 (4777 2516 174 40021) and 217.77.8.0/21 (4777 2516 174 40021)
  217.77.0.0/21        4777 2516 174 40021  - Withdrawn - aggregated with 217.77.8.0/21 (4777 2516 174 40021)
  217.77.8.0/21        4777 2516 174 40021  - Withdrawn - aggregated with 217.77.0.0/21 (4777 2516 174 40021)
  217.216.40.0/21      4777 2516 3356 40021   
  217.216.48.0/21      4777 2497 3356 40021   
  217.216.62.0/24      4777 2497 3356 40021   
  217.216.64.0/22      4777 2497 3356 40021   
  217.216.80.0/20      4777 2497 3356 40021   

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

AS40021   72 More Specifics   90 Total Advertisements   CONTABO-40021 - Contabo Inc., US
    5.180.151.0/24                5.180.148.0/22
    5.252.52.0/23                 5.252.52.0/22
    5.252.54.0/23                 5.252.52.0/22
    38.105.209.0/24               38.0.0.0/8
    38.105.232.0/24               38.0.0.0/8
    45.137.192.0/24               45.137.192.0/22
    45.137.194.0/24               45.137.192.0/22
    62.146.224.0/21               62.146.224.0/20
    66.94.96.0/21                 66.94.96.0/19
    66.94.104.0/21                66.94.96.0/19
    66.94.112.0/22                66.94.96.0/19
    66.94.116.0/23                66.94.96.0/19
    66.94.118.0/24                66.94.96.0/19
    66.94.119.0/24                66.94.96.0/19
    66.94.120.0/21                66.94.96.0/19
    81.22.38.0/24                 81.22.36.0/22
    82.197.64.0/22                82.197.64.0/21
    86.48.16.0/22                 86.48.0.0/19
    86.48.20.0/22                 86.48.0.0/19
    86.48.24.0/22                 86.48.0.0/19
    86.48.28.0/22                 86.48.0.0/19
    92.118.56.0/23                92.118.56.0/22
    92.118.58.0/23                92.118.56.0/22
    94.72.112.0/21                94.72.96.0/19
    94.72.120.0/21                94.72.96.0/19
    94.101.113.0/24               94.101.112.0/22
    109.236.60.0/24               109.236.60.0/22
    144.126.128.0/20              144.126.128.0/19
    144.126.144.0/22              144.126.128.0/19
    144.126.148.0/22              144.126.128.0/19
    144.126.152.0/21              144.126.128.0/19
    147.93.0.0/21                 147.93.0.0/17
    147.93.128.0/20               147.93.128.0/18
    147.93.144.0/22               147.93.128.0/18
    147.93.150.0/24               147.93.128.0/18
    147.93.176.0/20               147.93.128.0/18
    154.12.224.0/21               154.12.0.0/16
    154.12.232.0/21               154.12.0.0/16
    154.12.240.0/21               154.12.0.0/16
    154.12.248.0/22               154.12.0.0/16
    154.12.252.0/22               154.12.0.0/16
    154.38.160.0/21               154.38.0.0/16
    154.38.168.0/21               154.38.0.0/16
    154.38.176.0/21               154.38.0.0/16
    154.38.184.0/21               154.38.0.0/16
    154.53.32.0/21                154.53.0.0/16
    154.53.40.0/21                154.53.0.0/16
    154.53.48.0/21                154.53.0.0/16
    154.53.56.0/21                154.53.0.0/16
    157.173.192.0/20              157.173.192.0/19
    164.5.254.0/23                164.5.240.0/20
    176.57.165.0/24               176.57.128.0/18
    185.111.156.0/24              185.111.156.0/22
    185.187.235.0/24              185.187.232.0/22
    194.113.67.0/24               194.113.64.0/22
    194.238.24.0/21               194.238.16.0/20
    195.26.240.0/21               195.26.240.0/20
    195.26.248.0/21               195.26.240.0/20
    207.244.224.0/20              207.244.224.0/19
    207.244.240.0/20              207.244.224.0/19
    212.28.176.0/21               212.28.176.0/20
    212.28.184.0/21               212.28.176.0/20
    212.56.32.0/22                212.56.32.0/20
    212.56.36.0/22                212.56.32.0/20
    212.56.40.0/21                212.56.32.0/20
    217.77.0.0/21                 217.77.0.0/20
    217.77.8.0/21                 217.77.0.0/20
    217.216.40.0/21               217.216.0.0/15
    217.216.48.0/21               217.216.0.0/15
    217.216.62.0/24               217.216.0.0/15
    217.216.64.0/22               217.216.0.0/15
    217.216.80.0/20               217.216.0.0/15

Whois Entry

whois: 402332

IANA has recorded AS40021 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS40021\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:       40021
             ASName:         CONTABO-40021
             ASHandle:       AS40021
             RegDate:        2023-05-16
             Updated:        2025-07-14
             Ref:            https://rdap.arin.net/registry/autnum/40021
             
             
             OrgName:        Contabo Inc.
             OrgId:          CONTA-48
             Address:        710 N Tucker Blvd. STE 400A
             City:           St. Louis
             StateProv:      MO
             PostalCode:     63101
             Country:        US
             RegDate:        2019-12-23
             Updated:        2024-11-25
             Ref:            https://rdap.arin.net/registry/entity/CONTA-48
             
             
             OrgNOCHandle: CONTA393-ARIN
             OrgNOCName:   Contabo NOC
             OrgNOCPhone:  +498921665862 
             OrgNOCEmail:  sascha.wintz@contabo.com
             OrgNOCRef:    https://rdap.arin.net/registry/entity/CONTA393-ARIN
             
             OrgAbuseHandle: CAD61-ARIN
             OrgAbuseName:   Contabo Abuse Department
             OrgAbusePhone:  +498921665862 
             OrgAbuseEmail:  abuse@contabo.de
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/CAD61-ARIN
             
             OrgTechHandle: CONTA392-ARIN
             OrgTechName:   Contabo Tech
             OrgTechPhone:  +498921268372 
             OrgTechEmail:  johannes.selg@contabo.de
             OrgTechRef:    https://rdap.arin.net/registry/entity/CONTA392-ARIN
             
             OrgRoutingHandle: CONTA393-ARIN
             OrgRoutingName:   Contabo NOC
             OrgRoutingPhone:  +498921665862 
             OrgRoutingEmail:  sascha.wintz@contabo.com
             OrgRoutingRef:    https://rdap.arin.net/registry/entity/CONTA393-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.
             #