Report for 23400

Name

SDC - Software Design Corporation, 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.

23400 SDC - Software Design Corporation, US

  Adjacency:     1  Upstream:     1  Downstream:     0
  Upstream Adjacent AS list
    AS3356          LEVEL3 - Level 3 Parent, LLC, US

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
18156 AS23400        ORIGIN  Originate:       3840 /20.09  Transit:          0 /0.00  SDC - Software Design Corporation, 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       %
 4569 AS23400       SDC - Software Design Corporation, US             15     14      3      4     11  73.33%


  Prefix               AS Path                              Aggregation Suggestion
  63.247.96.0/21       4777 2516 3356 23400 + Announce - aggregate of 63.247.96.0/22 (4777 2516 3356 23400) and 63.247.100.0/22 (4777 2516 3356 23400)
  63.247.96.0/24       4777 2516 3356 23400 - Withdrawn - aggregated with 63.247.97.0/24 (4777 2516 3356 23400)
  63.247.97.0/24       4777 2516 3356 23400 - Withdrawn - aggregated with 63.247.96.0/24 (4777 2516 3356 23400)
  63.247.98.0/24       4777 2516 3356 23400 - Withdrawn - aggregated with 63.247.99.0/24 (4777 2516 3356 23400)
  63.247.99.0/24       4777 2516 3356 23400 - Withdrawn - aggregated with 63.247.98.0/24 (4777 2516 3356 23400)
  63.247.100.0/24      4777 2516 3356 23400 - Withdrawn - aggregated with 63.247.101.0/24 (4777 2516 3356 23400)
  63.247.101.0/24      4777 2516 3356 23400 - Withdrawn - aggregated with 63.247.100.0/24 (4777 2516 3356 23400)
  63.247.102.0/24      4777 2516 3356 23400 - Withdrawn - aggregated with 63.247.103.0/24 (4777 2516 3356 23400)
  63.247.103.0/24      4777 2516 3356 23400 - Withdrawn - aggregated with 63.247.102.0/24 (4777 2516 3356 23400)
  63.247.104.0/22      4777 2516 3356 23400 + Announce - aggregate of 63.247.104.0/23 (4777 2516 3356 23400) and 63.247.106.0/23 (4777 2516 3356 23400)
  63.247.104.0/24      4777 2516 3356 23400 - Withdrawn - aggregated with 63.247.105.0/24 (4777 2516 3356 23400)
  63.247.105.0/24      4777 2516 3356 23400 - Withdrawn - aggregated with 63.247.104.0/24 (4777 2516 3356 23400)
  63.247.106.0/24      4777 2516 3356 23400 - Withdrawn - aggregated with 63.247.107.0/24 (4777 2516 3356 23400)
  63.247.107.0/24      4777 2516 3356 23400 - Withdrawn - aggregated with 63.247.106.0/24 (4777 2516 3356 23400)
  63.247.108.0/23      4777 2516 3356 23400 + Announce - aggregate of 63.247.108.0/24 (4777 2516 3356 23400) and 63.247.109.0/24 (4777 2516 3356 23400)
  63.247.108.0/24      4777 2516 3356 23400 - Withdrawn - aggregated with 63.247.109.0/24 (4777 2516 3356 23400)
  63.247.109.0/24      4777 2516 3356 23400 - Withdrawn - aggregated with 63.247.108.0/24 (4777 2516 3356 23400)
  63.247.111.0/24      4777 2516 3356 23400   

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

AS23400   15 More Specifics   15 Total Advertisements   SDC - Software Design Corporation, US
    63.247.96.0/24                63.247.96.0/20
    63.247.97.0/24                63.247.96.0/20
    63.247.98.0/24                63.247.96.0/20
    63.247.99.0/24                63.247.96.0/20
    63.247.100.0/24               63.247.96.0/20
    63.247.101.0/24               63.247.96.0/20
    63.247.102.0/24               63.247.96.0/20
    63.247.103.0/24               63.247.96.0/20
    63.247.104.0/24               63.247.96.0/20
    63.247.105.0/24               63.247.96.0/20
    63.247.106.0/24               63.247.96.0/20
    63.247.107.0/24               63.247.96.0/20
    63.247.108.0/24               63.247.96.0/20
    63.247.109.0/24               63.247.96.0/20
    63.247.111.0/24               63.247.96.0/20

Whois Entry

whois: 402603

IANA has recorded AS23400 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS23400\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:       23400
             ASName:         SDC
             ASHandle:       AS23400
             RegDate:        2002-03-12
             Updated:        2026-03-16
             Ref:            https://rdap.arin.net/registry/autnum/23400
             
             
             OrgName:        Software Design Corporation
             OrgId:          SDC-227
             Address:        P.O. BOX 2438
             City:           SUGAR LAND
             StateProv:      TX
             PostalCode:     77487-2438
             Country:        US
             RegDate:        2026-02-25
             Updated:        2026-03-04
             Ref:            https://rdap.arin.net/registry/entity/SDC-227
             
             ReferralServer:  rwhois://rwhois.softdsgn.com:4321
             
             OrgTechHandle: SDCHO-ARIN
             OrgTechName:   SDC Hostmaster
             OrgTechPhone:  +1-281-494-7227 
             OrgTechEmail:  hostmaster@softdsgn.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/SDCHO-ARIN
             
             OrgAbuseHandle: SDCHO-ARIN
             OrgAbuseName:   SDC Hostmaster
             OrgAbusePhone:  +1-281-494-7227 
             OrgAbuseEmail:  hostmaster@softdsgn.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/SDCHO-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.softdsgn.com:4321.
             
             %rwhois V-1.5:003fff:00 rwhois.iapc.net (by Network Solutions, Inc. V-1.5.2)
             %error 230 No Objects Found