Report for 19577

Name

CASTRO-TELECOM - CASTRO TELECOM 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 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.

19577 CASTRO-TELECOM - CASTRO TELECOM LLC, US

  Adjacency:     1  Upstream:     1  Downstream:     0
  Upstream Adjacent AS list
    AS200454        Tomas Oliveira Valente Leite de Castro, PT

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
30415 AS19577        ORIGIN  Originate:       1536 /21.42  Transit:          0 /0.00  CASTRO-TELECOM - CASTRO TELECOM LLC, 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       %
35556 AS19577       CASTRO-TELECOM - CASTRO TELECOM LLC, US            2      0      0      2      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  208.85.8.0/22        4777 2497 174 12186 200454 19577   
  208.85.8.0/23        4608 4826 6939 200454 19577   

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

AS19577   1 More Specifics   2 Total Advertisements   CASTRO-TELECOM - CASTRO TELECOM LLC, US
    208.85.8.0/23                 208.85.8.0/22

Whois Entry

whois: 402332

IANA has recorded AS19577 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS19577\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:       19577
             ASName:         CASTRO-TELECOM
             ASHandle:       AS19577
             RegDate:        2024-06-14
             Updated:        2025-02-26
             Ref:            https://rdap.arin.net/registry/autnum/19577
             
             
             OrgName:        CASTRO TELECOM LLC
             OrgId:          CTL-383
             Address:        530-B HARKLE ROAD STE 100
             City:           Santa Fe
             StateProv:      NM
             PostalCode:     87505
             Country:        US
             RegDate:        2022-12-28
             Updated:        2025-08-26
             Ref:            https://rdap.arin.net/registry/entity/CTL-383
             
             
             OrgTechHandle: TOVLC-ARIN
             OrgTechName:   Castro, Tomas Oliveira Valente Leite de
             OrgTechPhone:  +1-202-555-0109 
             OrgTechEmail:  tomas.leite.castro@tecnico.ulisboa.pt
             OrgTechRef:    https://rdap.arin.net/registry/entity/TOVLC-ARIN
             
             OrgAbuseHandle: TOVLC-ARIN
             OrgAbuseName:   Castro, Tomas Oliveira Valente Leite de
             OrgAbusePhone:  +1-202-555-0109 
             OrgAbuseEmail:  tomas.leite.castro@tecnico.ulisboa.pt
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/TOVLC-ARIN
             
             OrgNOCHandle: TOVLC-ARIN
             OrgNOCName:   Castro, Tomas Oliveira Valente Leite de
             OrgNOCPhone:  +1-202-555-0109 
             OrgNOCEmail:  tomas.leite.castro@tecnico.ulisboa.pt
             OrgNOCRef:    https://rdap.arin.net/registry/entity/TOVLC-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.
             #