Report for 54866

Name

TCS-EDUCATION-SYSTEM - TCS Education System, 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.

54866 TCS-EDUCATION-SYSTEM, US

  Adjacency:     2  Upstream:     2  Downstream:     0
  Upstream Adjacent AS list
    AS33491         COMCAST-33491, US
    AS174           COGENT-174, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
51127 AS54866        ORIGIN  Originate:        512 /23.00  Transit:          0 /0.00  TCS-EDUCATION-SYSTEM, 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       %
23806 AS54866       TCS-EDUCATION-SYSTEM, US                           2      2      1      1      1  50.00%


  Prefix               AS Path                              Aggregation Suggestion
  206.126.246.0/23     49788 174 54866      + Announce - aggregate of 206.126.246.0/24 (49788 174 54866) and 206.126.247.0/24 (49788 174 54866)
  206.126.246.0/24     49788 174 54866      - Withdrawn - aggregated with 206.126.247.0/24 (49788 174 54866)
  206.126.247.0/24     49788 174 54866      - Withdrawn - aggregated with 206.126.246.0/24 (49788 174 54866)

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

AS54866   2 More Specifics   2 Total Advertisements   TCS-EDUCATION-SYSTEM, US
    206.126.246.0/24              206.126.246.0/23
    206.126.247.0/24              206.126.246.0/23

Whois Entry

whois: 402590

IANA has recorded AS54866 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS54866\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:       54866
             ASName:         TCS-EDUCATION-SYSTEM
             ASHandle:       AS54866
             RegDate:        2012-09-13
             Updated:        2012-09-13
             Ref:            https://rdap.arin.net/registry/autnum/54866
             
             
             OrgName:        TCS Education System
             OrgId:          TES-41
             Address:        350 N. Orleans
             City:           Chicago
             StateProv:      IL
             PostalCode:     60654
             Country:        US
             RegDate:        2012-08-30
             Updated:        2017-03-28
             Ref:            https://rdap.arin.net/registry/entity/TES-41
             
             
             OrgAbuseHandle: NETOP299-ARIN
             OrgAbuseName:   Netops
             OrgAbusePhone:  +1-312-467-2550 
             OrgAbuseEmail:  netops@tcsedsystem.edu
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/NETOP299-ARIN
             
             OrgTechHandle: NETOP299-ARIN
             OrgTechName:   Netops
             OrgTechPhone:  +1-312-467-2550 
             OrgTechEmail:  netops@tcsedsystem.edu
             OrgTechRef:    https://rdap.arin.net/registry/entity/NETOP299-ARIN
             
             OrgNOCHandle: NETOP299-ARIN
             OrgNOCName:   Netops
             OrgNOCPhone:  +1-312-467-2550 
             OrgNOCEmail:  netops@tcsedsystem.edu
             OrgNOCRef:    https://rdap.arin.net/registry/entity/NETOP299-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.
             #